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The Color of Art: Pigment Red, PR
Artist's Paint and Pigments Reference, Color Index Names: Color index Number and Pigment Chemical Composition
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Where applicable, clicking on the artist paint or pigment company code next to the pigments name will take you off site where more information can be found on the artist color. See the Key at the bottom of this page for all the art supply or pigment company codes. The links lead to an art materials supplier, In most cases more specific art medium or paint binder info, pigment properties, pigment history and MSDS sheets. Along with more info, special discounts or sales are often available.
Medium/binder codes in italics mean the pigment under that name is in the economy grade, not the "artist's" premium paint. see the Key for art material code.
Red
Jump to CI Pigment Red Number:
NR 1. NR 2, NR 3, NR 4, NR 6, NR 8, NR 9, NR 10, NR 11, NR 12, NR 16, NR 20, NR 22, NR 23, NR 24, NR 25, NR 26, NR 28, NR 31,
PR 1, PR 2, PR 3, PR 4, PR 5, PR 6, PR 7, PR 8, PR 9, PR 12, ;PR 13, ;PR 14, PR 15, PR 17, PR 19, PR 21, PR 22, PR 23, PR 31, PR 32, PR 38, PR 39, PR 47, PR 48, tPR 48:1, PR 48:2, PR 48:3, PR 48:4, PR 49, PR 49:1, PR 49:2, PR 52:1, PR 52:2, PR 53, PR 53:1, PR 57, PR 57:1, PR 57:2, PR 58:4, PR 60, PR 60:1, PR 61, PR 62, PR 63, PR 63:1, PR 69, PR 81, PR 81:1, PR 81:2, PR 81:3, PR 81:4, PR 83, PR 83:1, PR 83:3, PR 85, PR 88, PR 89, PR 90, PR 90:1, PR 101, PR 101:1, PR 102, PR 103, PR 104, PR 105, PR 106, PR 107, PR 108, PR 108:1, PR 109, PR 112, PR 113, PR 113:1, PR 114, PR 119, PR 120, PR 121, PR 122, PR 123, PR 139, PR 144, PR 146, PR 147, PR 148, PR 149, PR 150, PR 160, PR166, PR 168, PR 169, PR 170, PR 170:1, PR 171, PR 172, PR 173, PR 174, PR 175, PR 176, PR 177, PR 178, PR 179, PR 180, PR 181, PR 183, PR 184, PR 185, PR 187, PR 188, PR 190, PR 192, PR 193, PR 194, PR 200, PR 202, PR 204, PR 206, PR 207, PR 208, PR 209, PR 210, PR 211, PR 212, PR 213, PR214, PR 216, PR221, PR 223, PR 224, PR 226, PR 230, PR 231, PR 232, PR 233, PR 235, PR 236, PR 238, PR 239, PR 242, PR 243, PR 245, PR 251, PR 252, PR 253, PR 254, PR 255, tPR 256, PR 257, PR 258, PR 259, PR 260, PR 262, PR 264, PR 265, PR 266, PR 268, PR 269, PR 270, PR 271, PR 272, PR 273, PR 274, PR 275, PR 276, PR 279, PR 282, PR 286, PR 287, PR 288, PR 571?,
Cinnabar; Cobalt Red; Egyptian Red Gold; Fuchsite; Garnet; Granite; Piemontite; Pipestone; Pozzuolana Red Earth; Quinacridone pyrrolidone PR; Realgar; Red Coral; Red Jasper; Red Powdered Glass; Red Porphyry; Rhodonite; Sedona
Historic Red Pigments without Color Index Names
Historic Red Pigments Without C.I. Names  |  CI Natural Red  |  CI Pigment Red  | KEY |  Top ^
Color Index Name Code
CI Pigment Name
Common, Historic and Marketing Names
C.I.
Number
#
Chemical Composition
Color Description
†Long Term Effects of Light
Opacity
Light
Fastness
Oil Ab.
Oil Absorption
 Toxic
Side Notes
N/A Cinnabar Chinese Cinnabar;
Chinese red;
Cinnabar [GEN | KP.p | NP.ad.p];
Cinnabar dark [KP.p];
Cinnabar SHINSYA [KP.p];
Cinnabarite;
Cinnibar;
Llimpi Merkurblende;
Mercurblende;
Minium;
Natural Cinnabar [KP.p];
Natural Cinnabar Monte Amiata [KP.p];
Nium;
Pigment Red 106;
Quecksilbersulfidrot;
Sulfur Red Mercury;
Vermeil Zinnober;
Vermillion;
Vermilion;
Warm Cinnabar [NP.p]		 N/A Natural Mercuric Sulfide may have some impurites;

Making pigments: Vermillion at webexhibits.org;
 Bright Scarlet to to red brown 1 I-II* L C
MSDS		 * light fastness seems to be affected by sulfides, hydrothermal silica, preparation and impurities. (Mineral Reference);
According to the Pigment Compendium, 2008 Cinnabar based pigments only darken when they contain traces of chlorine or exposed to halogens. Also "blackening and fading in vermilion are always due to adulteration ‘by mixture with lake, carmine or by red or orange lead’."
(Ref Pigment Compendium p.383);

(Picture at mindat.org);
Natural mineral said to be more stable than synthetic vermilion (Natural Pigments Ref).
N/A Cobalt Red Cobalt Pink;
Cobalt Red;
Kobaltrot;
Rose De Cobalt		 N/A Cobalt Magnesium Oxide;
Magnesium cobalt oxide;

"This little-used pigment should consist of the oxides of magnesium and cobalt. It is prepared at a high temperature and is quite permanent." (Ref The Chemistry Of Paints And Painting", Church, 1915);		 - - I - B ‘There are obtainable from cobalt by different processes rose and red colours of more or less beauty and intensity, but all vastly inferior to those of madder [q.v.], in whose absence alone they could gain a place on the palette. They are generally characterised by a fatal chalkiness, and poorness of hue. More expensive than the madder colours, and without their purity, depth, or transparency cobalt reds have often been offered as pigments, and as often declined.’ Salter (1869) (Ref Pigment Compendium, 2008, p.122);
N/A Egyptian Red Gold Egyptian Red Gold;
Gold-silver Sulfide;
Red Gold		 N/A Gold-silver Sulfide (AgAuS); Deep bluish red - - - - Reportly found on a number of Egyptian artifacts. (Ref Pigment Compendium, 2008, p.177);
Egyptian Red Gold may be a corrosion product article at The Metropolitan Museum of Art's website (Ref)
N/A Fuchsite (Red) Red Fuchsite Genuine* [DS.w];
Muscovite		 N/A Red Fuchsite Dull red 4 I - A * more info on the Dan Smith PrimaTek™ artist paints and other minerals used for art pigments at the watercolor Handprint.com site.
N/A Garnet Almandine;
American Ruby**;
Bohemian Ruby**;
Carbuncle;
Garnet Genuine*** [DS.w];
Garnet Powder Red [KP.p];
Garnet Sakura-Nezumi [KP.p];
Garnet Sand Red;
Pyrope;
Red Garnet;
Rocky Mountain Ruby**		 N/A Garnet mineral;
CAS 1302-62-1		 Light to deep blueish pink* 4 I - A Rhodonite (see below) is a variety of Garnet;

* Garnets exist in all colors except blue;

** Not a real ruby;

(Pyrope Ref);
(Almandine Ref);

*** more info on the Dan Smith PrimaTek™ artist paints and other minerals used for art pigments at the watercolor Handprint.com site.
N/A Granite Granite;
Granite, Brown [KP.p];
Red Granite;		 N/A Quartz and mixed oxides (Ref) light brown - I - A (Ref)
N/A Piemontite Piedmontite;
Piemonite;
Piemontite;
Piemontite Genuine* [DS.w]		 N/A Aluminosilicates of Manganese (Ref) Deep Scarlet 3 I - A * more info on the Dan Smith PrimaTek™ artist paints and other minerals used for art pigments at the watercolor Handprint.com site.
N/A Pipestone Argillite;
Catlinite;
Minnesota Pipestone [DS.o.w];
Natural Pipestone;
Pink Pipestone;
Pink Pipestone (Catlinite) [NP.p];
Pipestone;
Sacred Red Stone		 N/A Pink clay stone consisting of Iron Oxide and Clay Light Red or Pink 1-2 I M A Was used by Native Americans to make sacred pipes.(Ref)
N/A Pozzuolana Red Earth Pozzuolana Red Earth [KP.p];
Terra Pozzuolana		 N/A Highly hydraulic volcanic pumice from Umbria, Italy light bluish pink - I - A -
N/A Quinacridone pyrrolidone PR Quinacridone pyrrolidone PR;
Quinacridone Red-Orange [LQ.a];
Permanent Alizarin Crimson [HO | WN.wod];
Permanent Carmine [WN.o.w];
Madder (hue);
Madder Red Dark (hue) [SCH] 		N/A Quinacridone and pyrrolidone co-precipitated

Deep dark bluish red

†Dulls, Fades

 4 II - A -
N/A Realgar Arsenic Rouge;
Burnt Orpiment;
Eolite;
Oropimente Quemado;
Realgar [GEN | NP.p];
Realgarite;
Red Arsenic;
Red Orpiment;
Rahj al ghar;
Rejalgar;
Risagallo;
Risigallum;
Ruby Sulfur;
Ruby Sulphur;
Sandaracha		 N/A Natural mineral or synthetic
Arsenic Sulfide; (Ref Boston Fine Arts)

Making pigments: Realgar at webexhibits.org;

Bright Orange Red

†hue shift towards yellow

1 III* - D
MSDS
MSDS		 Said to be incompatible with lead or copper pigments (Ref);

*exposure to sunlight may convert some pigment into Pararealgar, a yellow pigment (Ref)
N/A Red Coral Corallium Japonicum;
Coral Pink [KP.p];
Dragon’s Blood**;
Japan coral;
Koikuchi-Sangomatu [KP.p];
Precious coral;
Red Coral [KP.p];
Sango Matsu;
Koikuti-Sango-Matsu		 N/A Mostly calcium carbonate. Composed of skeletons from colonies of soft-bodied marine animals of the class Cnidaria Anthozoa.;

"The warm pink tones associated with corals used for pigments are derived from the slow growing, red precious corals, Corallium japonicum and C. secundum" (Ref Pigment Compendium, 2008, p.137); 		Light pink 1-4*** - - A Red Coral (precious coral) is the most valuable; and makes a delicate pink pigment. Used mostly in Japan.

** (Ref) Raman spectroscopic analysis of dragon’s blood resins, Edwards, Oliveira, Prendergast, 2003

*** depends on binder, probably too transparent in oil to be useful.
N/A Red Jasper Brecciated Jasper;
Brown Egyptian Jasper;
Radiolarian Rock;
Red African Jasper;
Red Jasper [KP.p];		 N/A Amorphous quartz, colored red by iron (III) (Pigment Ref);
Impure Silica The Red coming mostly from Iron Oxides (Mineral Ref); (wikipedia Ref)		 Deep red 4 I - A
MSDS		 (Ref)
N/A Red Powdered Colored Glass Benishinsya Red [KP.p];
Iwa-enogu;
Iwaenogu;
IWA-Enogu® [KP.p];
Iwaaka Carnation Red [KP.p];
Iwabeni Scarlet [KP.p];
Iwahi Red [KP.p];
Iwamomo, pink [KP.p];
Iwashikou Crimson [KP.p];
Kibeni Orange [KP.p];
Shinsia, blackberry [KP.p]
 N/A Synthetic Iwa-enogu made of ground glass; Sodium aluminium silicate glass coloured with metal oxides Orange to deep red - I - A -
N/A Red Porphyry Augit Porphyry Crimson Red [KA.p];
Augit Porphyry Light Violet [KA.p];
Augite Porphyry;
Porfido Rosso;
Porfido Rosso Antico;
Red Porphyry		   "The English form of the Latin word porphyrites, used by the Romans to designate a certain rock having a dark-crimson ground through which are scattered small crystals of feldspar. In Pliny's time this rock, quarried in Egypt, was used extensively for architectural and ornamental purposes, and especially for the base or lower part of busts To the Italians it became known as porfido rosso anlico. Other rocks having a similar structure, commonly called porphyritic, were used in Italy, and designated, in accordance with the predominating color, as porfido nero, porfido verde, etc. (Reference from The Century Dictionary and Cyclopedia; Whitney, Smith, 191. pg.4628); Deep red to violet also in green - I - A porphyrization: The process of grinding a substance with a muller on a slab of porphyry or other hard stone. It is much used in the preparation of colors. (Reference from The Century Dictionary and Cyclopedia; Whitney, Smith, 191. pg.4628);
N/A Rhodonite Fowlerite;
Rhodonite;
Rhodonite Genuine* [DS.o.w]		 N/A Mineral Rhodonite; Crystalline manganese inosilicate Brilliant rose pink to brownish grey 4 I - A Semi precious stone sometimes used as a jewel;
(Ref and Pic);
(Lots of Pics)
Rhodonite is the official gem of Commonwealth of Massachusetts;
* more info on the Dan Smith PrimaTek™ artist paints and other minerals used for art piments at the watercolor Handprint.com site;
N/A Sedona Red Orche;
Sedona Genuine [DS.o.w]		 N/A Natural Red Ochre Violet red brown 1 I - A * more info on the Dan Smith PrimaTek™ artist paints and other minerals used for art piments at the watercolor Handprint.com site
CI Natural Red
Historic Red Pigments Without C.I. Names  |  CI Natural Red  |   CI Pigment Red  | KEY |  Top ^
Color Index Name Code
CI Pigment Name
Common, Historic and Marketing Names
C.I.
Number
#
Chemical Composition
Color Description
†Long Term Effects of Light
Opacity
Light
Fastness
Oil Ab.
Oil Absorption
 Toxic
Side Notes
NR1 Sophoretin C.I. Natural Red 1;
Meletin;
Natural Red 1;
Sophoretin		 - Laked extract of Toon or Indian mahogany tree berries;

CAS 117-39-5		 - - - - A  
NR2 Monascus Red C.I. Natural Red 12;
Monascus Red;
Natural Red 2 		- Monascus (red fermented rice);
Monascus purpureus fungus		 Dark orange red to purple 4 III - A -
NR3 Kermes Alkermes;
C.I. Natural Red 3;
Crimson;
Grana;
Grain Lake;
Hysginum;
Kermen;
Kermen vermilio;
Kermes;
Kermes Lake;
Kermesic acid;
Natural Red 3;
Scarlet;
Venetian scarlet;
Vermiculum		 75460 Kermesic acid;
Laked extract from the bodies of the insect Kermes ilices (also known as Coccus ilicis). It is chemically very similar to carmine (NR3);

CAS 476-35-7		 Yellow red;

†Fades

 4 - - A Mentioned in the Bible book of Genesis (38:28) as scarlet or crimson (Ref)
NR4 Cochineal Burnt Carmine;
Carmine [WNd];
Carmine Extra-Fine Genuine [SE];
Carmine (genuine) [SE.w];
Carmine Lake;
Carmine Naccarat [KP.p];
C.I. Natural Red 4;
Cocciniglia;
Coccus Cacti Extract;
Cochinilla;
Cochenille [KP.p];
Cochineal [NP.p];
Cochineal Extract;
Cochineal Tincture;
Cochineal Lake;
Crimson Lake;
Florentine Lake;
Grana;
Grana Cochinilla;
Hamburgh Lake;
Indian Purple*;
Natural Red 4;
Parisian Lake;
Sanred 1;
Venetian Lake;
Viennese Lake;
Zacatillo		 75470 Laked extract from dried bodies of the female cochineal insect (Coccus cacti);
Color mostly from carminic acid, kermes acid and laccainic acid D.;

How Carmine is made at webexhibits.org

Cochineal: CAS 1343-78-8
Carmine: CAS 1390-65-4
Carminic Acid: CAS 1260-17-9		 Dark deep to mid red;

†Fades		 4 III - A May be effected by very basic or very acidic  conditions (Ref)

* Indian purple is carmine precipitated on a copper base (Ref);
NR6 Chayroot Alizarin;
Chayroot;
C.I. Natural Red 6;
Madder;
Natural Red 6		 - Root of Hedyotis Umbellata;

alizarin:
CAS 72-48-0;
Rubierythric Acid:
CAS 152-84-1		 Deep bluish red - III - A -
NR8 Alizarin Crimson Aal;
Alizarin Carmine;
Alizarin Crimson;
Alizarin Purple;
Alizarin Purpurin;
Alizarin Red;
Anthraquinone Purple;
C.I. Natural Red 8;
Krapplack;
Laque de Garance;
Natural Red 8;
Natural Rose Madder;
Madder Lake [KP.p];
Madder Lake, Brown [KP.p];
Madder Lake, Carmesine Red [KP.p];
Madder Lake, dark red [KP.p];
Madder Lake, Hazelnut [KP.p];
Madder Lake HOFF [KP.p];
Madder Lake, Orange [KP.p];
Madder Lake Perego, dark [KP.p];
Madder Lake Perego, pale [KP.p];
Madder Lake, Salmon [KP.p];
Madder Lake, violet [KP.p];
Madder Lake, violet-brown [KP.p];
Natural Red 8;
Turkey Madder;

Compare NR9 and PR83
 58205
75330
75410
75340		 Rubia tinctorium;
Garancine (Pigment Ref);
Anthraquinone Lake;

Making pigments: Madder Lake at webexhibits.org

alizarin:
CAS 72-48-0;
rubiadin:
CAS 117-02-2;
purpuroxanthin-carboxylic acid:
CAS 478-06-8;
xanthopurpurin:
CAS 518-83-2
purpurin:
CAS 81-54-9
pseudopurpurin:
CAS 476-41-5 		Deep violet to bluish red to cardinal red to reddish orange* 4 III - A * Color depends on method of manufacture and the metal salt the madder is fixed on. Tin salts giving more yellowish shades.
NR9 Madder Lake Alizarin;
Alizarin Crimson;
Alizarin Red;
Alizarine;
Adrianople Red;
Alsatian madder;
Avignon madder;
C.I. Natural Red 9;
Cory’s Brown Madder;
Cory’s Yellow Madder;
Dutch madder;
Dyer's Root;
Extra Purple Madder [WNd];
Field’s Purple;
Garancia;
Garancine;
Garanza;
Granzuolli;
Krapp;
Krapplack;
Lacca di Robbia;
Laca de Rubia;
Lake of Natural Madder;
Laque de Garance;
Levant Red;
Madder Carmine;
Madder Lake [KP.p];
Madder Lake, yellowish [KP.p];
Madder Orange;
Madder Purple;
Madder Root [NP.p];
Madder Yellow;
Natural Madder;
Natural Red 9;
Orange Lake;
Orange Madder;
Pink Madder;
Purpurin;
Purple Rubiate;
Rose Doré [WN.o];
Rose Madder [BR];
Rose Madder Deep [WNd];
Rose Madder Genuine [DS.w | WN.o.w];
Rubia Tinctorum;
Ruben’s Madder;
Steiner lake;
Turkey Red;
Turkey Red Madder;
Warantia,
Waranciam;
Warencia;
Waranz;

Compare NR8 and PR83
 75330; 75420
 Lake of the extract from Madder roots (Rubia tinctorium), usually precipitated on aluminium hydrate or Tin;
(Madder Ref at Boston Fine Arts);

Alizarin (1;2-dihydroxy anthraquinone);

Purpurin (1;2;4-trihydroxy anthraquinone):


Making pigments: Madder Lake at webexhibits.org

CAS 71538-26-6;
alizarin:
CAS 72-48-0;
pseudopurpurin:
CAS 476-41-5
 Deep blueish pink red to yellowish red*

†Fades, Dulls, Hue shift towards blueish or yellowish		 4 III 80 A *color depents on method of manufacture and the metal salt the madder is fixed on.
NR10 Alizarin Alizarin;
C.I. Natural Red 10;
Madder;
Natural Red 10		 75330 alizarin:
CAS 72-48-0;
Rubierythric Acid:
CAS 152-84-1		 Deep bluish red 4 III - A -
NR11 Alizarin Alizarin;
C.I. Natural Red 11;
Madder;
Natural Red 11		 75330 alizarin:
CAS 72-48-0;
Rubierythric Acid:
CAS 152-84-1
 Deep bluish red 4 III - A -
NR12 Alizarin Alizarin;
C.I. Natural Red 12;
Madder;
Natural Red 12		 75330 alizarin:
CAS 72-48-0;
Rubierythric Acid:
CAS 152-84-1		 Deep bluish red 4 III - A -
NR16 Alizarin Purple Alizarin Purple;
Alizarin Violet;
Anthraquinone Lake 75410;
Anthraquinone Purple;
C.I. Natural Red 16;
Natural Red 16;
Purpurin;
purpurine		 58205
75410
 Purpurin and Purpuroxanthin;
Rubia tinctorium;
(Ref at Boston Fine Arts);

xanthopurpurin:
CAS 518-83-2;
rubiadin:
CAS 117-02-2;
purpuroxanthin-carboxylic acid:
CAS 478-06-8;
purpurin:
CAS 81-54-9
Deep bluish/ violet red 4 IV - A -
NR20 Alkanet Alcanna Tinctoria;
Aldanet;
Alkanna alkannan;
Alkanet Root [GEN | KA | NP.p];
Alkannin;
Anchusin;
Bugloss;
C.I. Natural Red 20;
Dyer's Alkanet;
Dyer's Bugloss (Alcanna tinctoria);
Natural Red 20;
Red;
Orchanet Root;
Orkane;
Spanish Bugloss;
Violet Carmine (hue);		 75520;
75530		 A natural red dye obtained from the roots of two species of plants, the false alkanet plant, Anchusa officinalis (and A. tinctoria) and the true alkanet plant, Lawsonia alba. (Ref at Boston Fine Arts);

alkannan:
CAS 517-90-8
alkannin:
CAS 23444-65-7
CAS 85251-58-7 		Dark purple red-brown 4 IV - A (Ref Natural Pigments)
NR22 Santalin C.I. Natural Red 22;
Natural Red 22;
Red Saunders Dye;
Red Sanders Dye;
Sandalwood, powder [KP.p];
Sandalwood Red;
Sandal Wood Shavings [KA]		 75510 Isosantalin;
Santalin-A, santalin-B (Deoxysantalin); Extracted from the heartwood of Indian Red Sanders tree (Pterocarpus Santalinus)

deoxysantalin:
CAS 6771-96-6 		Reddish violet 4 IV - A
MSDS		 -
NR23 Rheumine C.I. Natural Red 23;
Natural Red 23;
Rhubarb root		 75510 1;8-Dihydroxy-3-
methylanthra
quinone;

deoxysantalin:
CAS 6771-96-6 		Dull dark purple red 4 IV - A -
NR24 Brazilin Brazil;
Brazilin;
Brazilwood;
Brazilwood Sawdust [NP.p];
Brazil Wood Shavings [KA.p];
C.I. Natural Red 24;
Lignum Fernambuci;
Natural Red 24;
Pernambuco;
Sappanwood		 75280 Brazilwood (Caesalpinia echinata) Red Dye Lake;
Brazilin (leuco form);
Brazilein (oxidized form);
(Ref)
Preparation of Lake Pigment here at Natural Pigments; 		Purplish to orange red 4 IV - A
MSDS		 -
NR25 Lac Lake Bengal Lac;
Cake Lac;
Caked Lac;
C.I. Natural Red 25;
Gomme Laque;
Grained Lac;
Gum Lac;
Gummilack;
Indian Lake;
Kadi lakh;
Lac Dye [KP.p | NP.p];
Lac;
Laca;
lacca;
Lac Lake;
Lakka;
Lic-Lac;
Natural Lacaic Acid;
Natural Red 25;
Seed-lac;
Rangbatti		 75450 Extracted from shellac resin excreted by the lac insect, Laccifer Llacca or Coccus lacca; Natural laccaic acid; Lac Dye precipitated with Aluminium Hydroxide;

CAS 476-41-5		 Dark dull red 4 III - A -
NR26 Carthamus Red Carthamus Red;
Carthame
Carthamic Acid
Carthamin;
C.I. Natural Red 26;
False Saffron;
Natural Red 26;
Safflower Red;		 - Carthamic Acid; Extract obtained from the flowers of safflower Carthamus tinctoria - 4 IV - A -
NR28 Archil Archil;
C.I. Natural Red 28;
Citrus Red 2;
Cudbear;
French Purple;
Lacmus;
Litmus;
Natural Red 28;
Orcein;
Orchil;
Red Indigo 		758600 Dye extracted from several species of lichen Rocella tinctoria also called orchella weeds; Now made from orcinol by hydrogen peroxide oxidation; (Ref);
CAS 1400-62-0		 Reddish brown to Purple 4 IV - A Acidic or basic environment changes color, used to make litmus paper.
NR31 Dragon's Blood C.I. Natural Red 31;
Dragon's Blood;
Dragon's Blood IYDAHA [KP.p];
Dragon's Blood, powder [KP.p];
Natural Red 31;
Palm Dragon’s Blood;
Sanguis Draconis;
Socotra Dragon’s Blood		 75200
75210		 Laked Resinous extraction the Rattan palm tree, Daemonorps
Draco;
Raman spectroscopy (Ref Spectrochimica Acta); (Ref) Raman spectroscopic analysis of dragon’s blood resins, Edwards, Oliveira, Prendergast, 2003

Dracaena Cinnabari;
Draccorubin (CI 75200) and Dracorhodin (CI 75210)		 Pink, deep red brown or orange red;

†Fades and dulls, hue shift towards brown

 4 IV - A
MSDS		 -

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CI Pigment Red
Historic Red Pigments Without C.I. Names  |  CI Natural Red  |  CI Pigment Red  | KEY |  Top ^
Color Index Name Code
CI Pigment Name
Common, Historic and Marketing Names
C.I.
Number
#
Chemical Composition
Color Description
†Long Term Effects of Light
Opacity
Light
Fastness
Oil Ab.
Oil Absorption
 Toxic
Side Notes
PR1 Pigment Red 1 C.I. Pigment Red 1;
Para Red Extra Light;
Pigment Red B;
Pigment Red 1;
Pigment Red 1 Dark;
Pigment Red 1 light		 12070 Monoazo;

CAS 6410-10-2		 Light & Dark warm red - III - A -
PR2 Naphthol Red G C.I. Pigment Red 2;
Fast Red F2R;
Flame Red [DR];
Heuco Red;
Naphthol Red;
Naphthol Red FRR;
Naphthol Red Light;
Pigment Red 2		 12310 Monoazo;
Azomethine

CAS 6041-94-7		 Yellowish red (tint pink); Blueish Red* - II 45-81 A
MSDS		 *Blue and Yellow shades
PR3 Toluidine Red Barn Red;
Blockx Red [BXd];
Bright Red [CL];
Cadmium Red Purple Substitute [SE];
Chinese Red Vermilion Hue;
Chinese Vermilion Substitute [SE];
C.I. Pigment Red 3;
Cinnabar Red [EP.p];
Cinnabar Red Deep (hue) [LK];
Eljon Red;
Eljon Scarlet;
Geranium Lake [MR.o];
Hansa Red;
Hansa Scarlet RNC;
Harrison Red;
Helio Red;
Helio Fast Red;
Helios Red [SE];
Imitation Vermilion;
Kenalake Scarlet;
Lithol Red;
Madder Lake (hue) [PF.w];
Monoazo Red;
Naphthol Red;
Permanent Intense Red [SE.t];
Pigment Red 3;
Poster Red [AS];
Scarlet;
Scarlet Lake [DRd];
Solintor Scarlet;
Spectrum Red;
Studio Red, Helio [KP.p];
Sunbrite Red;
Toluidine Red BS;
Vermilion Hue;
Winsor Red [WNd];		 12120 Monoazo;
Beta Naphthol Toluidine;

CAS 2425-85-6

Dark yellow to blue shade red*;

†Fades

 2 II-III** 40 A
MSDS		 may require wetting agent;

*Blue and Yellow shades

** not recommended for permanent art work.
PR4 Permanent Red R Aniline Red;
Brilliant Red [DR];
Blazing Red;
Cadmium Red Light Substitute [SE];
Chinese Red Vermilion Hue;
Chlorinated Para Red;
C.I. Pigment Red 4;
Cinnabar Red Light (hue) [LK];
D&C Red No 36 308260;
FAST RED R;
Fire Red [CL];
Flaming Red;
French Vermilion Red (hue) [SE.os];
French Vermilion (hue) [SE.os];
Hansa Red R;
Magenta;
Permanent Red R;
Pigment Red 4;
Red Orange;
Signal Red;
Tangerine [DR];
Vermilion (hue) [MR.o | SCH | SE.t];
Vermilion Red (hue);
 12085 Monoazo;
Beta naphthol;
Chlorinated para-nitroaniline;
Chlor-Ortho-Nitraniline;
Aniline Red; (Ref at Boston Fine Arts CAMEO);

CAS 2814-77-9		 Bright Yellowish Red, Reddish orange 1 II-III* 30 A
MSDS		 The classic lipstick Red;

* not recommended for permanent art work.
PR5 Naphthol Red DK Carmine (hue) [DR | HO.g];
Carmine Red (hue) [PF];
C.I. Pigment Red 5;
Crimson [DR];
Fast Carmine FB;
Magenta [PF.o];
Naphthol Carmine FB;
Naphthol Crimson [DR];
Naphthol ITR;
Naphthol Red DK;
Naphthol Red Medium [GO.a];
Permanent Carmine [PF.w];
Permanent Carmine FB;
Pigment Red 5		 12490 Monoazo;
Naphthol;

CAS 6410-41-9		 Bright Light Blueish Red 3 II 40 A -
PR6 Permanent Red Y C.I. Pigment Red 6;
Parachlor Red;
Permanent Red Y;
Pigment Red 6;
Sunglow Red		 12090 Monoazo;

CAS 6410-13-5		 Bright yellowish red - - - A -
PR7 Naphthol Crimson Red AS-TR Alizarine Red [GU];
Brilliant Alizarine (hue);
C.I. Pigment Red 7;
Naphthol Red AS-TR;
Permanent Carmine;
Permanent Crimson;
Pigment Red 7;
Purple Madder (hue) [RGH.o]		 12420 Monoazo;
Naphthol		 Bright Blue Red 3 II 40 A  
PR8 Permanent Red F4R C.I. Pigment Red 8;
FAST RED F4R;
Naphthol Red;
Pigment Red 8		 12335 Monoazo;
Naphthol;

CAS 6410-30-6		 Yellowish red, bluish pink undertone 2 III 50 A -
PR9 Naphthol AS Red Brilliant Red [MA.a];
Brilliant Red Light;
Cadmium Red (hue) [DR];
Cadmium Red Imitation;
C.I. Pigment Red 9;
Flame Red [HO.a.g];
Hostafine Red FRLL;
London Red [WNd];
Naphthol AS-OL;
Naphthol Red FRLL;
Naphthol Red Deep;
Naphthol Red Light [DB.a | CR.a.o | LQ.a];
Naphthol Scarlet [GB.o.o];
Permanent Red [LA.a | MA.p];
Permanent Red Deep [LKd];
Permanent Red FRLL [KP.p];
Permanent Scarlet;
Pigment Red 9;
Poppy Red [AS];
Red Vermilion (hue) [LB.av];
Scarlet [HO.ag];
Ton Rouge de Cadmium Clair [LB.o];
Vermillon (hue) [LK];
Vermilion Hue [DR | WN.a.a];
Vermillon Deep (hue) [LK];
Vermilion light (hue) [LK];
Vermilion Red Deep (hue)		 12460 Monoazo;
Naphthol;

LBNL Pigment Database Spectral radiative properties;
Naphthol Red Light

CAS 6410-38-4

Bright Yellowish Red, blue/pink undertone;

†Fades

 3 II-III 40 A
MSDS		 -
PR12 Permanent Bordeaux TRR Bordeaux [AS];
Bordeaux Red [KP.pd];
Cadmium Red Hue [WNd];
Carmin [LB.o];
C.I. Pigment Red 12;
Permanent Red TRR;
Rubine;
Pigment Red 12;
Studio Bordeaux [KP.p]		 12385 Monoazo;
Naphthol;

CAS 6410-32-8		 Bluish red - II 40 A -
PR13 Toluidine Maroon C.I. Pigment Red 13;
Pigment Red 13;
Toluidine Red RN;
Toluidine Maroon 		12395 Toluidine;

CAS 6535-47-3		 Dark red 3 II 40 A -
PR14 Permanent Bordeaux FGR Bordeaux Red;
C.I. Pigment Red 14;
Crimson;
Helio Fast Bordeaux BR;
Naphthol Red FGR;
Pigment Bordeaux FGR;
Pigment Red 14		 12380 Monoazo;

CAS 6471-50-7		 Bluish red - II - A -
PR15 Permanent Maroon Medium C.I. Pigment Red 15;
Permanent Maroon Medium;
Pigment Red 15		 12465 Monoazo;

CAS 6410-39-5		 Dull bluish red - II - A -
PR17 Pigment Red 17 Cadmium Red Deep Hue [LQ.ad];
C.I. Pigment Red 17;
Naphthol Red;
Pigment Red 17;
Poppy Red;
Scarlet		 12390 Monoazo;
Naphthol;

CAS 6655-84-1		 Bright red - III - A -
PR19 Arylide Maroon Arylide Maroon Dark;
C.I. Pigment Red 19;
Pigment Red 19		 - Azomethine Maroon - - - - obsolete
PR21 Pigment Red 21 Cadmium Red Light Hue [LQ.ad];
C.I. Pigment Red 21;
FAST RED 2R;
Permanent Red FR;
Pigment Red 21		 12300 Monoazo;

CAS 6410-26-0		 Bright yellowish red 1 II 40 A -
PR22 Naphthol Red Bright Art Red;
Briiliant Red-B;
C.I. Pigment Red 22;
Devil's Red;
FAST SCARLET N;
Naphtol Red Bright;
Naphthol Red Light;
Naphthol Red Light Shade;
Opaque Scarlet [HO];
Pigment Red 22;
Scarlet [HO];
Solfast scarlet		 12315 Monoazo;

CAS 6448-95-9		 bright blueish shade red 1 III 45 A
MSDS		 -
PR23 Naphthol Red Dark Carmine (hue) [RT.a];
Carmine Hue;
C.I. Pigment Red 23;
Crimson Lake [HO.w];
Fast Rose Red;
Jewel Red;
Madder Lake (hue) [RTd];
Naphthol Carmine;
Naphthol Red Dark;
Naphthol AS;
Permanent Red;
Pigment Red 23;
Solfast scarlet dark		 12355 Monoazo;

CAS 6471-49-4		 Dark dull deep red 3 III 45 A -
PR31 Naphthol Red Extra Dark C.I. Pigment Red 31;
Naphthol Red 31;
Naphthol Red Extra Dark;
Magenta [HO];
Opaque Magenta [HO];
Pigment Red 31;
Red Violet;
Vulcan Fast Bordeaux BF		 12360 Monoazo;

CAS 6448-96-0		 Bluish red 1 I-II-III?* 45 A Same as PR 212? (Ref);
* conflicting info
PR32 Pigment Red 32 C.I. Pigment Red 32;
Pigment Red 32;
Vulcan Fast Rubine RF		 12320 Monoazo;

CAS 6410-29-3		 Bluish red - II 40 A -
PR38 Pyrazolone Red C.I. Pigment Red 38;
Pyrazolone Red [WL.o];
Permanent Red Deep [WL.o];
Pyrazolone Red Scarlet [WL.o];
Pigment Red 38		 21120 Disazo;

CAS 6358-87-8		 Bluish to yellowish red 2 II 50 A -
PR39 Arsenic Sulphide Arsenic Rouge;
Arsenic Sulfide;
Arsenic Sulphide;
C.I. Pigment Red 39;
Eolite;
Pigment Red 39;
Realgar [GEN | NP.p];
Realgarite;
Red Arsenic;
Red Arsenic Sulphide;
Red Orpiment;
Rahj al ghar;
Rejalgar;
Risagallo;
Risigallum;
Ruby Arsenic;
Ruby Sulfur;
Ruby Sulphur;
Sandaracha		 - Natural mineral or synthetic
Arsenic Sulfide;

Making pigments: Realgar at webexhibits.org;

CAS 1303-32-8

Bright Orange Red

†hue shift towards yellow

1 III* - D
MSDS		 Said to be incompatible with lead or copper pigments (Ref Natural Pigments);

* exposure to sunlight may convert some pigment into Pararealgar, a yellow pigment (Ref Mineral)
PR47 Pigment Red 47 C.I. Pigment Red 47;
Fast Orange FR;
Pigment Red 47		 - Organic Bright yellowish red - - - - -
PR48 Permanent Red BB Beta oxynaphtholic acid scarlet;
Cadmium Red Hue [HO];
C.I. Pigment Red 48;
Pigment Red 48;
Scarlet Lake [HO.w];
Watching Red		 15865 Monoazo;
Beta OxyNaphtholic Acid;

CAS 3564-21-4;
CAS 16013-44-8

Light yellowish scarlet red

†Fades, hue shift: bluer

 3 III 45 A -
PR48:1 Permanent Red BB [FIAT] C.I. Pigment Red 48:1;
Citation Red Light Barium;
FAST SCARLET BBN;
Omnicryl Barium Red;
Permanent Red BB [FIAT];
Pigment Red 48:1
Red 2B Yellow Shade		 15865:1 Monoazo;
Barium Base;

CAS 7585-41-3		 Bright yellowish red 3 III 45 A
MSDS		 -
PR48:2 Permanent Red BB BRILLIANT RED BBC;
Cadmium Red Purple Hue;
C.I. Pigment Red 48:2;
IRGALITE(R) Red;
Lithol Scarlet;
MONO AZO BASALT;
Permanent Red 2BCL;
Permanent Red BB [FIAT];
Pigment Red 48:2;
Red 2B Blue Shade		 15865:2 Monoazo;
Calcium Base;

CAS 7023-61-2		 Yellower to bluer than PR 48:1 3 III 45-91 A
MSDS		 -
PR48:3 Irgalite Red 2BY 2B-acid-Sr;
C.I. Pigment Red 48:3;
Geranium;
Heuco Red;
Irgalite Red 2BY;
Permanent Red I [HO];
Pigment Red 48:3;
Rose Malmaison;
Scarlet Lake Deep [MH]		 15865:3 Monoazo;
Strontium Salt;

CAS 15782-05-5		 Bright Magenta shade 4 III 45 A -
PR48:4 Permanent Red 2B Bonithol Red;
Carmine (hue) [CH | MA];
C.I. Pigment Red 48:4;
Crimson [CR.a.o];
Mauve [MA]
Permanent Red 2B;
Pigment Red 48:4		 15865:4 Monoazo;
Manganese Base;

CAS 5208-66-0		 Mid-shade red 1 III 45-63 A -
PR49 Lithol Red LN C.I. Pigment Red 49;
Lithol Red;
Pigment Red 49		 15630 Monoazo;

CAS 1248-18-6		 Yellowish red - - - A -
PR49:1 Barium Lithol Red Barium Lithol Red;
C.I. Pigment Red 49:1
LITHOL RED R;
Pigment Red 49:1;
Rose [MA];
Suthol Red		 15630:1 Monoazo;

CAS 1103-38-4		 Red with blue undertone - III 40 A
MSDS		 -
PR49:2 Calcium Lithol Red Calcium Lithol Red;
C.I. Pigment Red 49:2;
LITHOL DARK RED;
Pigment Red 49:2		 15630:2 Monoazo;

CAS 1103-39-5		 Bright bluish red - IV 45 A
MSDS
 -
PR52:1 Pigment Red 52.1 BON Rubine;
BON Rubine, nonresinated;
BON Rubine Red;
C.I. Pigment Red 52:1;
Pigment Red 51:1		 15860:1 Monoazo;

CAS 17852-99-
 Bright red - III 50 A
MSDS		 -
PR52:2 Pigment Red 52.2 Bordeaux;
C.I. Pigment Red 52:2;
Lithol Scarlet Red 302;
Pigment Red 52:2;
Rose Maroon		 15860:2 Monoazo;

CAS 12238-31-2		 Bordeaux - III 40 A -
PR53 Lake Red C Bronze Red;
Bronze Scarlet;
C.I. Pigment Red 53;
D&C Red No 9;
Lake Red C;
Pigment Red 53;
Pigment Red Lack C		 15585 Monoazo;
Beta Naphthol;

CAS 2092-56-0		 Bright reddish orange- - III 42 A-B
ICSC		 -
PR53:1 Pigment Lake Red C 3110 Bronze Red
Barium Lake;
Bronze Scarlet;
C.I. Pigment Red 53:1
Lake Red;
Pigment Red 53:1;
Red Lake C;
Red Toner C 		15585:1 Monoazo;
Barium Base (Chembook Ref);

CAS 5160-2-1		 Brite yellowish red - IV 45 A-B*
MSDS
ICSC		 * See MSDS for slight hazard information.
PR 57 Sodium Lithol Rubine C.I. Pigment Red 57;
D&C Red No. 6;
Lithol Rubine;
Pigment Red 57		 15850 Monoazo;
Lithol on Sodium base;

CAS 5858-81-1		 Bluish red 3 III 50-55 A -
PR57:1 Lithol Rubine C.I. Pigment Red 57:1;
D&C Red No 7 Calcium Lake;
Lithol Rubine;
Pigment Red 57:1;
Primary Red - Magenta [MA];
Process Magenta;
Pyroline Ruby Red [RGH.o.p];
RUBINE BK;		 15850:1 Monoazo;
Lithol on Calcium base;

CAS 5281-4-9		 Magenta; Mid-red violet undertone 3 III 45 A -
PR57:2 Pigment Red 57:2 C.I. Pigment Red 57:2;
D&C Red No.6 Lake;
Pigment Red 52:2;
Ruby		 15850:2 Monoazo;

CAS 17852-98-1		 Bluish red 3 III - A often used in lipstick
PR58:4 Pigment Red 58:4 Bordeaux;
C.I. Pigment Red 58:4;
Crimson;
Maroon;
Pigment Red 56:4;
Rubine Toner M		 15825:4 Monoazo;

CAS 52233-00-8		 Bluish red - - - A -
PR60 Permanent Rose Acid Scarlet;
Beacon Red;
Carmine 3B;
C.I. Pigment Red 60;
Geranium ( Primary ) [HO.g];
Lighthouse Chrome Red B;
Permanent Rose [HO.w];
Pigment Red 60;
Pigment Scarlet;
Superchrome Red B;		 16105 Mordant red 9 coprecipitated on Alum hydroxide base with barium chloride; Disazo lake on a barium base;

CAS 1836-22-2		 Bluish Red - III - A -
PR60:1 Pigment Scarlet C.I. Pigment Red 60:1;
Pigment Red 60:1;
Pigment Scarlet		 16105:1 Monoazo;

CAS 1325-16-2		 Bright Mid-shade to bluish red - II-III 82 A -
PR61 Lake Caramine L

C.I. Pigment Red 61;
Lake Caramine L;
Pigment Red 61

24830
24830:1

Xylidine coupled with naphthol on Alumina and Barium white or Zinc white on Barium white base;

CAS 1325-29-7
- - - - - -
PR62 Pigment Carmine 3B Azo Red Transparent [RGH.o.p];
C.I. Pigment Red 62;
Pigment Carmine 3B;
Pigment Red 62		 23295 Monoazo Barium Salt; Barium lake of m-tolidine coupled with 2-naphthol.

CAS 109823-18-9		 Dark bluish red 4 II - A -
PR63 Pigment Red 63 C.I. Pigment Red 63;
Lake Bordeaux BN;
Pigment Red 63		 15880 Monoazo;

CAS 21416-46-6;
CAS 1325-13-9		 Mid-shade red - - - A -
PR63:1 Lithol Bordeaux BON Maroon;
Calcium Lake;
C.I. Pigment Red 63:1;
D&C Red No 34
Deep Maroon;
Fanchon Maroon;
Lake Bordeaux BN;
Lithol Bordeaux;
Pigment Maroon Toner;
Pigment Red 63:1		 15880:1 Monoazo;

CAS 6417-83-0		 Bordeaux - III 45-102 A
MSDS		 -
PR69 Lithol Red GG C.I. Pigment Red 69;
Geranium (Primary) [HO];
Lithol Red GG [FIAT];
Pigment Red 69;
Pigment Red BC		 15595 Monoazo; Disazo Lake Bright yellowish red - - - A -
PR81 Rhodamine 6G Bengal Pink Lake;
C.I. Pigment Red 81;
D&C Red No 19;
Fast Pink Lake;
Fast Pink Toner RNT;
Pigment Red 81;
PTMA Pink;
Rhodamine 6G Lake;
Rhodamine Red;
Rhodamine Y;		 45160:1 Phosphotungsto-
molybdic acid;
Phosphorous, Tungsten, Molybdenum of Rhodamine;

CAS 12224-98-5		 Fluorescent bright bluish red 4 III 45 B -
PR81:1 Rhodamine 6G [FIAT] Brilliant Purple [SCH];
C.I. Pigment Red 81:1;
Pigment Brown 1:1?
Pigment Red 81:1;
Rhodamine 6G;
Rose Madder (hue) [CL];
Tyrian Pink [LB.av]		 45160:3 Silicotungsto-
molybdic acid salt of Rhodamine;

CAS 12224-98-8		 Bright bluish red 4 IV 55 B
MSDS		  
PR81:2 Rhodamine YS Brilliant Purple [SCH];
C.I. Pigment Red 81:2;
Pigment Red 81:2;
Rhodamine YS		 45161:1 Silicomolybdic acid salt of Rhodamine; Triarylcarbonium Bright bluish red 4 III

†Darkens		 91-111 B
MSDS		 -
PR81:3 Rhodamine YS C.I. Pigment Red 81:3;
Crimson Lake [SE.t];
Pigment Red 81:3;
Rhodamine YS		 45161:2 Phosphomolybdic acid salt of Rhodamine Bright bluish red 4 III - B -
PR81:4 Rhodamine YS PTMA C.I. Pigment Red 81:4;
Pigment Red 81:4;
Rhodamine YS;
Rhodamine YS PTMA		 45161:5 Phosphotungsto-
molybdic acid salt of Rhodamine		 Bright bluish red 4 III

† Hue Shift Yellower		 - B
MSDS		 -
PR83 Alizarin Crimson Alizarin Brown;
Alizarin Carmine [LB.o | MA.o];
Alizarin Crap Lake;
Alizarin Crimson [GEN | AS | BR | DB.o.w | DS.a.i.o.w | GB.o.o | GR.a.o.o.w.w.wo | HO.g.o.wo | KA.o.p | KP.p | MG.a.g.o.w | MH.o | RF.e | RGH.o.p | RT.w | SE.o.w | SV | UT.a.o.w | WL.o.p | WN.o.w];
Alizarin Crimson Dark [KP.p];
Alizarin Crimson Deep;
Alizarin Crimson Golden [GRd];
Alizarin Crimson Lake [SE];
Alizarin Farben;
Alizarin Golden [RGH.o];
Alizarin Lake;
Alizarine Madder Lake;
Alizarine Madder Lake Deep [SCH];
Alizarin Orange;
Alizarin Red;
Alizarine Red B;
Alizarin Red Lake [SE];
Alizarin Scarlet;
Alizarin Violet Lake [SE.w];
Antique Crimson [HO.w];
Brown Madder;
Carmine (hue) [HO.w];
Carmine (Alizarin Crimson) [HO];
Carmine Red (hue) [SE.os];
C.I. Pigment Red 83;
Crimson Madder;
Indian Lake Alizarin;
Lacca d'Alizarina Cremisina;
Laca de Garanza Cramois;
Laque d'Alizarine Carmiosie;
Madder;
Madder Brown;
Madder Carmine [WN];
Madder Lake;
Madder Lake Deep [RT.o.w];
Mordant Red 11;
Permanent Alizarin Crimson [UT.w?**];
Permanent Carmine (hue) [MA.o.p];
Permanent Crimson;
Permanent Rose Madder [SI.p];
Permanent Violet;
Pigment Red 83;
Red Scarlet;
Rose Doré (Alizarin);
Rose Madder [BX.o.w | HO.w | WNd];
Rose Madder Alizarin;
Rose Madder Deep [BX.o.w]
Rose Madder Hue [GR.w | UT.o];
Rose Madder Lake [SE.w];
Scarlet Crap Lake;
Synthetic Madder;
Violet Carp Lake;

Compare NR9 and NR8		 58000 Alizarin or 1,2-dihydroxyanthraquinone is an synthetic organic compound with formula C14H8O4 that is historically important as a prominent dye, originally derived from the roots of plants of the madder genus;
(Ref Alizarin Crimson at Boston Fine Arts);
Alizarin (wikipedia Ref);
Alizarin, synthetic
(Ref at Boston Fine Arts CAMEO);

Lake of Dihydroxy-anthraqutone or Anthraquinone Lake (Alizarin Crimson) is a synthetic form of NR9 (without Purpurin) precipitated with an inert binder, usually a metallic salt.; (lake pigments wikipedia Ref);
Color depends on metal the lake is fixed on: Aluminum - Red;
Calcium - Bluish Red;
Iron - Maroon;
Chromium - Reddish-brown;
Tin - yellowish red

Making madder lake at webexhibits.org

CAS 72-48-0;
CAS 104074-25-1

Deep Dark yellowish to Bordeaux violet red;*

†Fades, Darkens

 4 III 76 A
MSDS		 Unique Hue; PR 177, PR 179 or PR 264 are similar, and more permanent substitutes, but not identical.;

* Color depents on method of manufacture and the metal salt the Anthraquinone dye is fixed on. Tin salts giving more yellowish shades in artist pigments.

?**Utrecht's Artist Watercolor "Permanent Alizarin Crimson" is PR83 according to the web site, but is PR177 according to the MSDS sheet. I believe it's probably PR177 because that would be more consistent with the name of "Permanent Alizarin Crimson", with an "excellent" lightfastness rating, and in their oil paints PR177 is under the same color name of "Permanent Alizarin Crimson". Also they they have normal "Alizarin Crimson" PR83 in acrylics, oil colors and watercolor.
PR83:1 Alizarin Lake Alizarin Crimson [CL | DR | SCH.w];
Alizarin Lake;
Alizarine Madder Lake [SCHM.o];
C.I. Pigment Red 83:1;
Crimson Alizarin [DB.o | DRd];
Krapplack Dunkel [SCH.g];
Madder (crimson) Lake Deep Extra*? [OH.w];
Madder (Geranium) Lake Deep Extra [OH.o];
Madder Lake Deep [SCH.g];
Pigment Red 83:1		 58000:1 Anthraquinone on Alumina Base Deep Dark yellowish to Bordeaux violet red 4 III 76 A  
PR83:3 Alizarin Lake Alizarin Crimson [LK];
C.I. Pigment Red 83:3
Pigment Red 83:3		 58000:3 - Bordeaux violet red 4 III - A -
PR85 Indo Red Algol Brilliant Red BB;
Algol Brilliant Red 2B;
Algol Pink BBK;
Algol Red BK;
C.I. Pigment Red 85;
Indo Red MV-6640;
Pigment Red 85;
Ponsol Red AFF		 63350 Anthraquinone Brilliant orange red - - - - -
PR88 Thioindigoid Violet Bayeaux Violet;
Bordeaux;
C.I. Pigment Red 88;
Deep Magenta [HO.ag];
Garnet Lake;
Permanent Red;
Permanent Violet [DS.w];
Pigment Red 88;
Purple Lake [WN.w];
Scheveningen Violet [OH];
Thioindigo Red [KP.p];
Thioindigo Violet [DV.o];
Thioindigoid Violet;
Thio Red Violet [GU]		 73312 Thioindigoid;
CAS 14295-43-3		 Deep red violet 3 I-II L A
MSDS		 reacts with hydrochloric acid.
PR90 Vermilionette C.I. Pigment Red 90;
Imperial red;
Royal Red;
Vermilionette		 45380:1 Eosin Y (CI 45380, CI Acid Red 87) precipitated on a base of lead oxide; Bluish red with a yellowish green fluorescence - IV - C This was one of the pigments that caused heavy fading in paintings by Vincent Van Gogh according to Rioux (1999). (Pigment Compendium, 2008, Ref)
PR90:1 Geranium lake C.I. Pigment Red 90:1;
Geranium lake		 45380:3 Eosin Y (CI 45380, CI Acid Red 87) precipitated on a base of aluminium hydroxide; Bluish red with a yellowish green fluorescence - IV - - -
PR89 Pigment Red 89 Anthraquinone Red;
C.I. Pigment Red 89;
Pigment Red 89		 60745 Dianthraquinone Blue red violet - II - A Discontinued; was used in artist colors
PR101 Synthetic Iron Oxide Red Agate Brown [SCH.o];
Antique Red Ochre [HO.w];
Antique Russet Bauxite [HO.wd?];
Asphaltum (hue) [DS.o];
Red [HO];
Antique Russet Brown [HO.w];
Baroque Red [RGH.o];
Bauxite Red;
Blood Stone Red;
Bright Red Ochre;
Brown [HO];
Brown Pink [RF.e | WL.o.p];
Brown Red;
Brun Rouge;
Burnt Roman Vitriol;
Burnt Seinna [AS | DB.o | DR | HO.ag | LA.a | LB.av.o | LK | MA | PF.w | RT.a.a.o.wo | SCH.a | UT.a.o | WN.a.a.k.w.w.wo];
Burnt Sienna Deep [DV,w];
Burnt Vitriol;
Cadmium Red Orange (hue) [MA];
Caput Mortem:
Caput Mortum [AS];
Caput Mortuum [BX.o.w | LK | MA.p | SCHM.o];
Caput Mortuum Dark;
Caput Mortuum Deep [SCH];
Caput Mortuum Hell [SCH];
Caput Mortum Light;
Caput Mortuum Pale [SCH];
Caput Mortuum Synthetic [KP.p];
Caput Mortuum Violet [WN.w];
Caput Mortuum Violet (mars) [OH.a.o.w];
Chinese Red;
C.I. Pigment Red 101;
Colcothar;
Crimson Oxide [GU];
Crocus Martis2;
English Brown Red;
English Light Red;
English Red [GEN | DB.o | LA.a | LK | MA.p | OH.o.w | SE.a.o | SCH.g.o, SCHM.o];
English Red Deep [LK];
English Red Earth [DS.w];
English Red Extra Deep [SI.p];
English Red Light [KP.p | LK];
English Red (Mars) [OH.a];
English Red Ochre [DS.w];
English Venetian Red [SCH.w];
Environox Falun Red*** [EP.p];
Environox Terra Cotta*** [EP.p];
Hematite;
Hematite Burnt Scarlet [DS.w];
Indian Red [GEN | AS | DB.o.w | DR | DS.a.i.o.p.w | DV.k.w | GB.o.p | GR.o.w.wo | HO.o.w | MA | MH.o | RT.o.o | SE.o | UT.w | WN.k.o.w.w.wo];
Indian Red Deep [RGH.o.p];
Indian Red ochre [CH];
Indian Red Oxide [CR.a.o | JO.ag];
Iron Brown Hematite;
Iron Oxide, Mars Brown [SE];
Iron Oxide Red [KP.p];
Iron Oxide Red 130 M [KP.p];
Iron Oxide Red 222, dark [KP.p];
Iron Oxide Red Medium, Mexican Terra Cotta Shade [SI.p];
Italian Venetian Red [DS.w];
Light Oxide Red [RT.a.o.o.w.wo];
Light Red [GEN | AS | DR | GR.o | HO.o.w | WN.k.w.o];
Light Red Ochre [CR.a.o];
Light Red Oxide [CR];
Lunar Red Rock [DS.w];
Maroon Red Oxide Transparent [RGH.o];
Mars Brown [MA.o.o(artis).p | WNd];
Mars Orange [MA.o(artis) | RF.e | SE } WL.p];
Mars Orange Red [OH.a];
Mars Red [GEN | BX.o | BR | DR | MA.a.o.o(artis).o.p | RF.e | RGH.o.p | SE.os| WL.o.p | WN];
Mars Red Extra Deep Turkish Red [SI.p];
Mars Red Light [WL.o.p];
Mars Scarlet [WNd];
Mars Violet [GEN | AS | BX.o | CR.a.o | DS.o.p | DR | DV | HO.a.o | KA.o.p | MA.o.o(artis).p | MT | RF.e | RGH.o | SE.a | RT.o | WL.o.p | WN];
Mars Violet Deep [WN.o];
Medium Brown [SCH.a];
Medium Red Oxide [KA.ad];
Miltos;
Mineral Purple;
Mineral Violet;
Morelle Salt;
Ochre Red;
Opaque Brown [HO];
Oxide Orange;
Oxide Red Deep [LA.a];
Oxide Red Light [LA.a];
Oxyde Red [CH];
Oxyde Rouge;
Persian Red [OH.o];
Persian Indian Red [OH.o.w];
Persian Red (Indian) [OH.o];
Pigment Red 101;
Pompeiian Red [SCHM.o];
Pouzzoles Red [CH];
Pozzuoli Earth [SCHM.o];
Purple Ochre;
Raw Seinna [PF.w];
Raw Umber [LK];
Red 140 [EP.p];
Red Brown;
Red Brown Oxide Medium [GU];
Red Earth [CR | JO.ag | SCH];
Red Gold [GU];
Red Iron Oxide [PF| SCH.a | WN.a.o.w];
Red Ochre [HO.a | KA.o | LB.av | MA.a.g | MR.o | PF.o.o.w** | WL.o];
Red Oxide [BD.a | GO.a | SQ.a | TA.a | LB.o | LQ.a | MT];
Red Oxide Deep [KA.p];
Red Oxide Light [GU | KA.p];
Red Oxide Medium [GU | KA.p];
Red Oxide of Iron;
Red Oxide Transparent [RGH.o.p];
Red Sartorius Earth [NP.p];
Rich Transparent Red Iron Oxide [DR];
Roman Ochre;
Roman Red;
Rouge Violet;
Salmon [KA.p];
Sartorius Red Earth [NP.p];
Scarlet [LQ.a];
Seinna;
Sepia Brown [LB.av];
Sepia Transparent [RGH.o];
Senois Brown [CH];
Senois Orange [CH];
Senois Red [CH];
Sinopia;
Spanish Oxide;
Spanish Red;
Spanish Earth [WL.o];
Synthetic Iron Oxide;
Synthetic Iron Oxide Blue Shade;
Synthetic Red Iron Oxide;
Terra d'Italia [KA.p];
Terra Di Sienna;
Terra Rosa [HO.o | MG.a.o.w | RGH.o.p | WN.o];
Terra Rosa Hue [GR.o | UT.o];
Terracotta Reddish [SCH.a];
Terre Rouge;
Translucent Brown Oxide [SCH.a, SCHM.o];
Translucent Orange Oxide;
Translucent Orange-Red [KP.p];
Translucent Red Brown [SCH.o];
Translucent Red Medium [KP.p];
Translucent Red Oxide [SCHM.o];
Transoxide Red [LA.a];
Transparent Brown [TA.a];
Transparent Brown Oxide [DS.o.w | WN.o];
Transparent Burnt Sienna [DV.af | LQ.a];
Transparent Earth Red [GB.o.p];
Transparent Iron Oxide Red [UT.o];
Transparent Mars Brown [BX.o.w | SQ.a | MA.o.w];
Transparent Mars Red [BX.o.w | SQ.a | MA.o.w];
Transparent Oxide Brown [RT.o.w];
Transparent Oxide Red [CAS.k | KA.o MH.o | OH.a | RT.o.w];
Transparent Oxide Red Lake [OH.o.w];
Transparent Red Iron Oxide [GO.a | GR.o];
Transparent Red Ochre [WN];
Transparent Red Oxide [BR | CR.a.o | DS.o.w | KA.ad.p | MG.a.o.w | MH | RT.wo | | TA.a];
Tuscan Red;
Venetian Orange [PF.o];
Venetian Red [GEN | CAS.k | CL | DB.o | DR | DS.i.o.w | DV.k.o.w | GB.o.o | GR.o.wo | GU.ad | MA.w | MR.o | MT | MH.o | MW.o | OH.o.w | PF.o | RGH.o.p | RT.o.w | SE.a.o | SI.p | UT.a.o.w | WN.o.w];
Venice Red;
Venician Red [PF];
Violet de Mars;
Violet Iron Oxide [DV.w | WN.a];
Violet Oxide;
XSL Translucent Red [KP.p];

There are many other names for ochres and red iron oxides, usually based on color hue (maroon, violet), production location (Turkey, Oxford), quarry, mining site or manufacturing method (burnt, fired, roasted) and to further complicate things they appear in amost all languages.
They can be followed or prefixed by other properties such as raw, bright, deep, dark, medium, fine or transparent etc.
There are also many different traditional spellings of the word Ochre, Ocher, Ocre, Oker, Oaker, etc. or Earth (Terra, Terre) and variances on the words oxide (Oxyde, oxid, etc.), Iron (di ferro, de fer, mars, Ferric, ferrous, etc.), red (rouge, rot, rosso, rojo, colorado, etc.) and brown (bruin, brun, marron, braun, moreno, etc.).
The same names are now seemingly even used interchangeably for synthetic or natural forms, including some crossover with the names of yellow hydrated iron oxides (PY42, PY43) and brown iron oxides and umbers (PBr6, PBr7).
The red iron oxide pigments have an ancient history and pigments often still use the traditional names not necessarily in the native tongue of the artists using them. Add to all that, the multitude of languages that have intermixed and the iron oxide pigment names have become an almost impossible list of varied phrases.		 77491 inorganic;
Synthetic Anhydrous red iron oxide, It may consist of the addtional modifiers Cr2 03, FeO, Mn203, or/and NiO in any combination.

LBNLPigment Database Spectral radiative properties;
Red Iron Oxide (i);
Red Iron Oxide (ii);
Red Iron Oxide (iii);
Red Oxide;

Making pigments: Red Ochre at webexhibits.org;

Iron Brown Hematite:
CPMA 3-06-7 (4th ed. CMPA Classification and Chemical Description of the Complex Inorganic Color Pigments)

CAS 1309-37-1
 various brownish yellow to orange to red shades with yellow to violet under tones**** 1-4* I 15-25 A
MSDS2		 *Transparency depends on particle size, amount of grinding, formulation, binder, method of manufacture, mineral content, impurities and additives.


** The color swatch for Fragonard Aquarelle extra fine watercolour Red Ochre at Dick Blicks site is wrong, it indicates a purplish color, the pigment name is correct though as PR101. Fragonard Aquarelle extra fine watercolour Red oche is a golden red oxide color see their PDF here.

*** Environox Terra Cotta and Environox Falun Red from Earth Pigments is Iron Oxide produced from reclaimed iron sludge

**** Oil paints, watercolors and other artist paints using PR101 and PR102 exist in almost any shade of yellow, orange, red and violet brown to green brown. Calcining or heating at a high temperature adds a whole other layer of deeper shades to the already wide degree of shades.
PR101:1 Red Hematite Burnt Sienna;
C.I. Pigment Red 101:1;
Pigment Red 101:1;
Red Haematite;
Red Hematite		 77015 Inorganic; Aluminium silicate and Ferric oxide Yellowish pink through brick red to brown** 1-4* I 15-25 A *Transparency depends on particle size, amount of grinding, formulation, binder, method of manufacture, mineral content, impurities and additives.
*** Oil paints and watercolors using PR101 and PR102 exist in almost any shade of yellow, orange, red, violet brown to green brown.
PR102 Natural Iron Oxide Almagro;
Antwerp Red;
Armenian Bole;
Arribida;
Augit Porphyry Crimson Red;
Bauxite Red;
Blood Stone;
Blue Ridge Hematite [NP.p];
Blue Ridge Violet Hematite [NP.p];
Bole;
Brown Red;
Brown Ochre Deep [OH.o.w];
Brun Rouge;
Burgundy Red Ochre [DS.o.w];
Burgundy Red Ochre Deep [KP.p];
Burgundy Red Ochre Medium [KP.p];
Burnt Sienna [CL | EP.p | SV];
Burnt Terra de Siena;
Burnt Ochre;
Burnt Yellow Ochre [DS.o];
Cadinal Purple;
Caput Mortuum violet brown [KP.p];
Caput Mortuum Dark, violet brown [KP.p];
Caput Mortuum Deep Violet [KP.p];
Caput Mortuum Reddish [KP.p];
Caput Mortuum, Reddish Dark [SI.p];
Colonial Burnt Sienna [EP.p];
Cote d'Azur;
Cote d'Azur Violet;
Cote d'Azur Violet (Natural Light Caput Mortuum) [DS.w];
C.I. Pigment Red 102;
Crimean Hematite [NP.p];
Crocus Martis2;
Deep Ochre [OH.o.w];
English Red;
Ercolano Red [NP.p];
Fired Gold Ochre [DS.w];
French Ochre SOFOROUGE [KP.p];
French Red Ochre [NP.p];
Genuine Indian Red, natural Hematite [SI.p];
Gulf Red;
Hematite [DS.o | KP.p | NP.p];
Hematite Burnt Scarlet Genuine[DS.o.w];
Hematite Crimean [NP.p];
Indian Red;
Indischrot;
Iron Brown Hematite;
Iron Oxide Red, natural [KP.p];
Italian Burnt Sienna [WL.o.];
Italian Pink [WL.o];
Italian Pompeii Red [WL.o.p];
Italian Pozzuoli Earth [WL.o,p];
Italian Rosso Veneto [WL.o.p];
Italian Terra Rosa (Sardinian) [WL.o.p];
Light Red [BX.o.w | WN.a.w];
Luberon Red Oxide (Indian Red) [NP.p];
Miltos;
Mineral Violet;
Minnesota Pipestone [DS.o.w];
Morelle Salt;
Mummy Deep Red Brick [KA.p];
Natural Hematite;
Natural Iron Oxide;
Natural Light Caput Mortuum [DS.w];
Natural Red [EP.p];
Natural Red Oxide;
Ocre Rouge;
Old Holland Light Red [OH.o.w];
Oxid Rot;
Oxyde Rouge;
Oxyde Rouge Naturelle;
Pabonazzo;
Persian Gulf Oxide;
Persian Red;
Pigment Red 102;
Pink Pipestone (Catlinite) [NP.p];
Poliment;
Pompeian Red;
Pompeii Red [WL.o];
Pompeiian Red;
Pozzuoli Earth [WL.o];
Pozzuoli Red [NP.p];
Prussian Brown;
Prussian Red;
Raw Sienna;
Raw Terra de Siena;
Red Bole [KP.p];
Red Earth;
Red Hematite;
Red Iron Ore;
Red Iron Stone;
Red Mine Ochre (England) [KP.p];
Red Ochre [BX.o.w | EP.p | LB.o | OH.o.w | SE.a.w | WL.o];
Red Oxide;
Red Umber [WL.o.p];
Redocker;
Roasted French Ochre [DS.w];
Rojo de Venecia;
Rojo indiano;
Rojo Óxido;
Rosso di Venezia;
Rosso indiano;
Rosso Ossido;
Rosso Sartorius [KP.p];
Rosso Veneto [WL.o];
Rouge de Venise;
Rouge Indien;
Rouge Venetien;
Siena-erde;
Seinna;
Sienne Calcinee;
Sinopean;
Sinoper;
Sinopia;
Sinopia Red Earth [SI};
Spanish Brown;
Spanish Earth (Purple Ochre) [WL.o];
Spanish Ochre;
Spanish Red [NP.p];
Spanish Red Ochre [KP.p];
Terra Cotta;
Terra Cotta (Light Red) [DV.w];
Terra di Siena;
Terra di Sienna;
Terra Pozzuoli;
Terra Rosa [WL.o];
Terre de Sienne;
Transparent Red Ochre [WN.o];
Turkey Red;
Tuscan red;
Venice Red;
Venetian Red [GEN | BX.o.w | EP.p | KP.p | NP.p | SQ.a];
Venetian Red Earth [MA.o];
Venezischrot;
Violet Hematite [NP.p];
Yellow Ochre Burnt [OH]

There are many other names for ochres and red iron oxides, usually based on color hue (maroon, violet), production location (Turkey, Oxford), quarry, mining site or manufacturing method (burnt, unburnt, fired, raw) and to further complicate things they appear in amost all languages.
They can be followed or prefixed by other properties such as bright, deep, dark, medium, fine or transparent etc.
There are also many different traditional spellings of the word Ochre, Ocher, Ocre, Oker, Oaker, etc. or Earth (Terra, Terre) and variances on the words oxide (Oxyde, oxid, etc.), Iron (di ferro, de fer, mars, Ferric, ferrous, etc.), red (rouge, rot, rosso, rojo, colorado, etc.) and brown (bruin, brun, marron, braun, moreno, etc.).
The same names are now seemingly even used interchangeably for synthetic or natural forms, including some crossover with the names of yellow hydrated iron oxides (PY42, PY43) and brown iron oxides and umbers (PBr6, PBr7).
The red iron oxide pigments have an ancient history and pigments often still use the traditional names, add the multitude of languages that have intermixed making the natural iron oxide pigment names an almost impossible list of varied phrases.		 77491 inorganic;
Anhydrous iron(III)-oxide:
Ferric Oxide;
Natural red iron oxide along with clay and other varied natural minerals depending on source.
May be calcined natural yellow oxide (yellow orchre or hydrous iron oxide)

Making pigments: Red Ochre at webexhibits.org;

CAS 1309-37-1		 Various brownish yellow and orange to red shades with yellow to violet under tones** 1-4* I 15-25 A
MSDS2		 *Natural pigments can vary widely depending on particle size, impurities, mineral composition, amount of grinding and refinement.

** Oil paints, watercolors and other artist paints using PR101 and PR102 exist in almost any shade of yellow, orange, red and violet brown to green brown. Calcining or heating at a high temperature adds a whole other layer of deeper shades to the already wide degree of natural shades.
PR103 Red Lead Chromate American Vemillion (hue);
Australian Cinnabar (hue);
Austrian Red;
Austrian Cinnabar (hue);
Chinese Red;
Chrome Red;
Chrome Scarlet;
Chrome Orange [MA];
Chrome Yellow;
Chrome Vermilion;
Chromrot;
C.I. Pigment Red 103;
Lead Chromate;
Midnight Sun;
Pigment Orange 21;
Pigment Orange 45;
Pigment Red 103;
Pigment Red 104;
Red Lead Chromate;
Rouge de Chrome;
Rouge de Perse;		 77601 Lead Chromate;

CAS 7758-97-6		 Bright red to orange red* - - - C
MSDS		 * When finely ground, the color becomes lighter and more of a yellowish red (Ref Dictionary of Artists' Oil Pigments: by R. Bruce Handlong, 1969)
PR104 Molybdate Orange American Vemillion (hue);
Australian Cinnabar (hue);
Austrian Red;
Austrian Cinnabar (hue);
Chinese Red;
Chromate Red;
Chrome Cinnabar (hue);
Chrome Red;
Chrome Scarlet;
Chrome Orange;
Chrome Yellow;
Chinese Red;
Chrome Cinnabar (hue);
Chrome Red;
Chrome Scarlet;
Chrome Orange [MA.p];
Chrome Yellow;
Chrome Vermilion;
C.I. Pigment Red 104;
Crocoite*;
Derby Red;
Garnet Chrome;
Golden Orange Yellow;
Lead Molybdate Chromate;
Laque Mineral;
FAST MOLYBDATE RED;
Lead Chromate Molybdate Sulfate Red;
Mineral Orange;
Mineral Red Thiosol;
Molibdated Lead Chrome;
Molybdate of Lead;
Molybdate Chrome;
Molybdate Chrome Red;
Molybdate Orange Y;
Molybdate Red 107;
Molybden Red;
Molybdenum Orange;
Orange Paste;
Persian Red;
Pigment Orange 21;
Pigment Orange 45;
Pigment Red 103;
Pigment Red 104;
Red Lead;
Rouge de Perse;
Rosetto Chrome;
Ruby Red Chrome;
Scarlet Chrome;
Vauquelin;
Victoria Red;
Vienna Red
 77605 Molybdated Lead Chromate;
mixed crystals of lead chromate, lead molybdate, and lead sulfate;

CAS 12656-85-8;
CAS 12213-61-5		 Bright reddish orange to mid-shade red* 1 II 14-22 C May be affected by hydrogen sulfide

* The products vary according to proportions of constituents and conditions of precipitation from orange to red Literature (Ref Inorganic Colouring Matters, Color Index 3rd Ed.)
PR105 Red Lead Azarcon;
Bleimennige;
C.I. Pigment Red 105;
Lead Orthoplumbate;
Lead Oxide;
Lead Oxide Red
Lead Tetroxide;
Mennige;
Mine Rouge;
Mineral Orange;
Mineral Red;
Miniatus;
Minium;
Minio;
Minio di Piombo;
Minium de Plomb;
Orange Mineral;
Palladian Red;
Palladian Scarlet;
Paris Red;
Pigment Orange 21;
Pigment Orange 45;
Pigment Red 103;
Pigment Red 104;
Pigment Red 105;
Red Lead [GEN | KP.p | NP.p];
Red Lead, Minium [KP.p];
Red Lead Oxide;
Red Oxide of Lead;
Rosso di Saturno;
Rosso Saturno;
Sandix;
Saturnine;
Saturn Red;
Triplumbic Tetroxide		 77578 Lead Tetroxide or ;
Minium is the natural mineral (Ref);

"Red Lead is produced by heating Litharge (lead monoxide) in the presence of air. The finest variety of Orange Mineral is obtain d by carefully heating pure white Lead , which is converted into Litharge and then into Red Lead." (Ref Dictionary of Artists' Oil Pigments p.64)

Making pigments: Red Lead at webexhibits.org;

CAS 1314-41-6 		Bright to dull Scarlet Red 1 II* 8 C
ICSC		 * May be affected by hydrogen sulfide. Also It may react with pigments that contain free sulfur;
Dry Pigment may be blackened by light, once ground in oil or resin this does not occur. (Ref Dictionary of Artists' Oil Pigments p.64)

More permanent in oil (Ref)
PR106 Vermillion (genuine) American Quicksilver Vermilion;
Carmine Vermilion;
Cenobrium;
Chinese Red;
Chinese Vermilion [HO.o];
Chu Sha;
C.I. Pigment Red 106;
Cinnabar (Natural)*;
Deep Vermilion;
English Vermilion
European Vermilion;
Extract of Vermilion;
French Vermillion [HO.o];
Genuine Chinese Vermilion [MH.o];
Genuine Vermilion [WL.o];
Orange Vermilion;
Natural Cinnabar [KP.p];
Pale Vermilion;
Pigment Red 106;
Trieste Vermilion;
Scarlet Vermillion;
Vermilion [BR | HO | KA.p | KP.p | MH.o | NP.p | RGH.o.p];
Vermillion [HO.o];
Vermilion (genuine) [BXd];
Zinnober		 77766 Synthetic Mercuric Sulfide;

Natural Cinnabar may have impurities but they do not seem to be the free sulphides that can cause darkening*;

Making pigments: Vermillion at webexhibits.org;

CAS 1344-48-5		 Bright mid through yellow red

†Darkens*		 1 I* 7-12 C
MSDS		 Unique hue;

May be affected by atmospheric sulfides;

Rumored to be more permanent with resin mediums or when glazed with PR 83.(WetCanvas.com Thread Ref);
(Boston MFA Ref)

*Any darking may be due to impurites (Ref p.673) (Ref), (Ref), (Natural Pigments Ref);
"Darking of Cinnibar based pigments occurs only in pigments containing traces of chlorine or exposed to the halogens. "
Also from Fields "blackening and fading in vermilion are always due to adulteration ‘by mixture with lake or carmine … by red or orange lead’."
(Ref Pigment Compendium p.383);
PR107 Antimony Red Antimonium;
Antimonous sulfide;
Antimony [KP.p];
Antimony Glance;
Antimony Orange;
Antimony Red [KP.p];
Antimony Vermilion;
Black Antimony;
Bournonite;
C.I. Pigment Red 107;
Crimson Antimony;
Golden Antimony Sulphide;
Golden Sulfur;
Golden Sulfur of Antimony;
Golden Yellow;
Goldschwefel;
Iron Black;
Lymphoscan;
Mineral Kermes;
Pigment Red 107;
Stibium*		 77050
77060
77061		 Antimony; Antimony (III) sulfide; Antimony oxide sulfide;
Antimony Trisulfide, (Ref at Boston Fine Arts CAMEO);

CAS 1315-04-4		 Light yellow orange to deep carmine to black; *Stibium is the metallic blackish grey form (Ref) 1 I - D
MSDS		 May blacken in presence of lead pigments; Can react explosively with some organic materials; (Ref);
PR108 Cadmium Red Alizarin Crimson Lake Extra (hue) [OH.w];
Cadmium Brown [KA.p | KP.p];
Cadmium Light Red;
Cadmium Maroon [AS | GRd | HO.o |KA.p];
Cadmium Maroon C.P. [GU];
Cadmium Orange [DB.w | GR.w?* | HO.wo | MW.o | OH.a.o.w];
Cadmium Orange #2, dp-vermillion [SI.p];
Cadmium Orange Deep [LA.a | MT];
Cadmium Orange Red [HO.o];
Cadmium Orange Red Shade [HO];
Cadmium Orange Hue[GR.w?*];
Cadmium Purple [BXo.w];
Cadmium Red [GEN | AS | BX.o.w | DR | HO.g.o.wo | SE.a | SQ.a | MG.a.g.o.w | MH.o | UT | WN.g.o.w.w];
Cadmuim red #4, bluish-purple [SI.p];
Cadmium Red Bordeaux [LA.a];
Cadmium Red Dark [RGH.o.p | WN.wo];
Cadmium Red Dark CP [GO.a];
Cadmium Red Dark Xtra CP [GU];
Cadmium Red Dark Xtra CP (blue shade) [GU];
Cadmium Red Deep [GEN | AS | DB.o | DSd | DR | DV.k.o.w | GB.o | GR.w?* | HO.g.o.w.wo | KA.o.p | LA.a | LB.o | LK | MA.a.o.o(artis).o.p.w | MR.o | MG.a.o.w | MH.o | MW.o | OH.a.o.w | RF.e | RT.a.o.w.wo | SCH.a.g.o.w | SE.o | SI.p | UT.o.w | WL.o.p | WN.a.k.o.w];
Cadmium Red Deep Genuine [SE.t];
Cadmium Red Deep Hue [GR.w?*];
Cadmium Red Deep Pure [UT.o.w ];
Cadmium Red Extra Deep [UT.a];
Cadmium Red Light [GEN | CAS.k | DB.o.w | DV.k.o.w | GB | GR.w?* | HO.o.w | KA.o.p | MR.o | LA.a | LB.o | LQ.a | MA.a.o.o(artis).o.p.w | MG.a.g.o.w | MH.o | MR.o | MW.o | NP.p | OH.a.o.w | RF.e | RGH.o.p | RT.a.o.wo | SCH.g.w | SE.o.os.w | SI.p | UT.a.o.w | WL.o.p | WN.a.a.k.w.wo];
Cadmium Red Light CP (orange shade) [GU];
Cadmium Red Light CP [GO.a];
Cadmium Red Light F [KP.p];
Cadmium Red Light Xtra [GU];
Cadmium Red Light Xtra CP [GU];
Cadmium Red Light Pure [UT.o.w];
Cadmium Red Light (Scarlet) [CR.a.o];
Cadmium Red Maroon [KA | RGH.o.p];
Cadmium Red Medium [GEN | CAS.k | CR.a.o | DB.o.w | DV.k.o.w | GB.o.p | GR.w?* | KA.o.p | LA.a | LB.o | LQ.a | MA.a.o.o(artis).o.p | MT | MW.o | OH.w | RF.e | RGH.o.p | RT.a.o.o.w.wo | SCH.a | SE.o | UT.a.o.w | WL.o.p | WN.a.a.k.wo ];
Cadmium Red Medium CP [GO.a];
Cadmium Red Medium Light C.P. [GU];
Cadmium Red Medium Pure [ UT.o.w];
Cadmium Red Medium (vermilioned) [OH.o];
Cadmium Red Middle [HO.a | SCH.g.w];
Cadmium Red Orange [HO.w | MA.a.o | SE.w];
Cadmium Red Pale [DR | WN];
Cadmium Red Purple [HO.a.g.o.w | KA.o.p |MA.o(artis).p | OH.o.w | RT.o | RGH.o.p | SE.a.os.w | WL.o];
Cadmium Red Scarlet [DSd | SV | OH.o.w | WN.w];
Cadmium Red Vermilion [WL.o];
Cadmium Scarlet [CR | DR | DV.w | JO.ag | LK | WN.g.o];
Cadmium Scarlet (Genuine) [CH];
Cadmium Vermilion Red;
Cadmium Yellow Deep [MW.o];
Cadmium Yellow Extra Deep [OH.o.w];
Cadmium Yellow Orange [HO.w | OH.a.g.o.w];
C.I. Pigment Red 108;
C.P. Cadmium Red Dark [GO.a];
C.P. Cadmium Red Deep [SQ.a | TA.a];
C.P. Cadmium Red Light [GO.a | SQ.a | TA.a];
C.P. Cadmium Red Medium [GO.a | SQ.a | TA.a];
Deep Cadmium Red (Genuine) [CH];
Deep True Cadmium Red [PF];
Light True Cadmium Red [PF];
Medium Cadmium Red (Genuine) [CH];
Old Holland Bright Red [OH.w];
Pigment Red 108;
Red Cadmium [PF.w];
Red Deep [SE];
Red Light [SE];
Selenium Red;
True Cadmium Red Deep [PF.o];
True Cadmium Red Light [PF.o];
Vermilion (hue) [HO.w];
Vermilion (cadmium scarlet) [HO];
Vermilion Hue [WNd]		 77202
77196		 Inorganic;
Cadmium Selenosuphite;

How Cadmium yellow/red is made at webexhibits.org;

Some brands of cadmium paints may in fact be composed of Cadmium-Barium Pigments even if indicated on the label as pure PR 108 (Reference: A Critical Analysis of Commercial Pigments, by M. Pérez, K. Castro, M.D. Rodríguez2, MA. Olazabal and J.M. Madariaga, University of the Basque Country, Dept. Analytical Chemistry and Dept. Painting).

CAS 58339-34-7		 Orange red to deep violet red

† Lightens, some paints might have hue shift towards yellower		 1 I 17-21 B
MSDS		 ?* on the Grumbacher website and on Dick Blicks site, Grumbacher Cadmiums are indicated to be the cadmium colors that do not contain barium. However the Grumbacher web site also states they are "coprecipated with barium sulfate", that would make them "Cadmium-Barium" versions of those cadmium colors and should have a :1 after the color index name. (ie. PO20 should be PO20:1). Older Grumbacher literature do indicate these are Cadmium-Barium colors.
PR108:1 Cadmium-Barium Red Cad-Barium Vermilion;
Cadmium Litho Maroon [GU];
Cadmium Litho Red Dark [GU];
Cadmium Litho Red Dark Xtra [GU];
Cadmium Litho Red Light [GU];
Cadmium Litho Red Lt (red shade) [GU];
Cadmium Litho Red Medium [GU];
Cadmium Litho Red Medium Light [GU];
Cadmium Litho Red Medium Light Xtra [GU];
Cadmium Litho Scarlet Xtra (yellow shade) [GU];
Cadmium Maroon LITHO [GU];
Cadmium Maroon LITHO (violet shade) [GU];
Cadmium Orange (hue*);
Cadmium Red (hue*) [DSd];
Cadmium Red Dark (hue*) [CL];
Cadmium Red Dark LITHO (blue shade) [GU];
Cadmium Red Dark Xtra LITHO (blue shade) [GU];
Cadmium Red Deep (hue*) [BR | SV];
Cadmium Red Extra Scarlet (hue*);
Cadmium Red Light (hue*) [BR | DB.a];
Cadmium Red Lithopone;
Cadmium red light LITHO (orange shade) [GU];
Cadmium red light LITHO (yellow shade) [GU];
Cadmium Red Medium (hue*) [BR | CL | DB.a | DSd];
Cadmium Red Medium Light Xtra LITHO (blue shade) [GU];
Cadmium Red No. 1, light (hue*) [KP.p];
Cadmium Red No. 2, medium (hue*) [KP.p];
Cadmium Red No. 3, dark (hue*) [KP.p];
Cadmium Red No. 4, bluish purple (hue*) [KP.p];
Cadmium Red Extra Scarlet (hue*);
Cadmium Red Light (hue*) [BR | CL];
Cadmium Red Scarlet (hue*) [DSd];
C.I. Pigment Red 108:1;
Pigment Red 108:1		 77202:1 Cadmium Barium Selenosuphite; Cadmium Barium Sulfoselenide; Cadmium sulphoselenide coprecipitated with barium sulphate Orange to deep red 1 I 17-21 B * Cheaper, Slightly less saturated and slightly less tinting strength as pure PR108.
Cadmium Barium compounds can be as much as 58.5% barium sulphate. (Ref: Painting Materials, A Short Encyclopedia, By Rutherford John Gettens, George Leslie Stout)

?* on the Grumbacher website and on Dick Blicks site, Grumbacher Cadmiums are indicated to be the cadmium colors that do not contain barium. However the Grumbacher web site also states they are "coprecipated with barium sulfate", that would make them "Cadmium-Barium" versions of those cadmium colors and should have a :1 after the color index name. (ie. PO20 should be PO20:1). Older Grumbacher literature do indicate these are Cadmium-Barium colors.
PR109 Purple of Cassius Cassius;
Cassius's Purple;
C.I. Pigment Red 109;
Famille Rose;
Pigment Red 109;
Pink Gold;
Purple Gold;
Purple of Cassius 		77482

Inorganic;

Hydrated double stanate of Gold;

Aurous stannate;

Gold Nanoparticles (Ref);

CAS 1345-24-0

 Violet red - 1 - A used in painting, staining porcelain and glass and is used to make "Ruby Glass";

Powerful and staining with a high tinting strength.;

the color is made by precipitating small quantities of gold in a tin chloride solution. (see PR109 Ref); also see (Ref from The Creation of Color in Eighteenth-Century Europe by Sarah Lowengard);

Andreas Cassius as inventor disproved (Ref);

Interestingly it is spontaneously Showing up on electronic circuit boards, probably because of gold plating and tinning used. (Ref) also possibly on cheap jewelry (Ref)
PR112 Naphthol Red AS-D Alizarine Crimson light1 (hue) [KP.p];
Antique Deep Red [HO.w];
Azo Red Medium [RT];
BON Arylamide Red;
Bright Red [LA.a];
Brilliant Red [MA];
Cadmium Red Deep Hue [LK];
Cadmium Red Hue [DR | MR.o | LK | WN.a.a];
Cadmium Red (Hue);
C.I. Pigment Red 112;
Fanchon Red [WL.o.p];
FAST Red FGR;
Geranium Lake [LK];
Grumbacher Red [GR.o.o];
Grumbacher Red (Naphthol) [GR.o.wo];
Grumbacher Red (Naphthol Red) [GR.o];
Naphthal;
Naphthol Bordeaux;
Naphthol Carbamide;
Naphthol Carmine;
Naphthol Red [GEN | CAS.k | DV.k | GB.o.o | KA | MG.a.g.o.w];
Naphthol Red Light [GO.a | OH.a | SQ.a | TA.a | UT.a | WN.a.o.w];
Naphthol Red Medium [RGH.o.p | RT.a];
Naphthol Scarlet [DS.o];
Napthol Vermillion [GU | MR.o];
Napthol Red [KA.ad];
Naphtole;
Oriental Red [LB.av];
Permanent Carmine;
Permanent Red [GU |HO.w];
Permanent Red FGR;
Pigment Red 112;
Proprietary Red (Naphthol AS-D) [GRd];
Red Permanent [MW.wo];
Scarlet [MA.g];
Scarlet Red [SCH];
Scheveningen Red Light [OH.o.w];
Scheveningen Red Medium [OH.o.w];
Spectrum Red [AS];
Studio Light Red [KP.p];
Vermillion (hue) [MR.o | LK];
Vermilion deep (hue) [LK];
Vermilion Hue [MA.a];
Vermilion Red (hue) [SCH.o];
XSL Poppy Red [KP.p]		 12370 Monoazo; Naphthol;
CAS 6535-46-2

†Fades, Darkens, Dulls

 Intense bright yellowish red 3 I* 30 A
MSDS1		 *ASTM rated I, other sources rate light fastness as II (Handprint.com)
PR113 Mercadium Red Langdomer Red Cadmium;
Cadmium Mercury Red;
Cadmium Vermilion Red;
C.I. Pigment Red 113;
Mercadium maroon CP [GU];
Mercadium Red;
Mercadmium Red;
Mercadium Red Light C.P. [GU];
Mercadium red light CP (orange shade);
Mercadium Red Maroon [RGHd];
Pigment Red 113		 77201 Cadmium sulfide-mercuric sulfide;
Calcined coprecipitate of Cadmium sulfide and Mercuric sulfide. The greater the mercuric sulfide content the deeper and redder the hue. (Ref Color index 3rd Ed., V.4, Inorganic colorants CI 77201)

CAS 1345-09-1		 Mid to yellowish red to Bordeaux 1 I L D -
PR113:1 Mercadium Lithopone Red Cadmium Mercury Lithopone Red;
C.I. Pigment Red 113:1;
Mercadium Lithopone Red;
Pigment Red 113:1		 77201:1 Cadmium sulfide-mercuric sulfide co- precipitated on Barium Sulfate Yellowish red to Bordeaux 1 I L D Similar but cheaper and slightly less saturated than PR113;
Cadmium-Barium pigments can be up to almost 60% barium sulphate. (Ref: Painting Materials, A Short Encyclopedia, By Rutherford John Gettens, George Leslie Stout)
PR114 Pigment Red 114 C.I. Pigment Red 114;
Fast Carmine BS;
Pigment Red 114;
Pollux Pink		 12351 Monoazo;

CAS 6358-47-0		 Bluish red 4 - - A -
PR119 Naphthol Red FG C.I. Pigment Red 119;
Naphthol Red FG;
Pigment Red 119		 - Monoazo;
Naphthol		 Bright yellowish red - I - A -
PR120 Naphthol Red MEG-DR C.I. Pigment Red 120;
Pigment Red 120;
Tangerine		 - Monoazo;
Naphthol		 Light orange pink 4 - - A -
PR121 Tin Violet Chromate of stannic oxide;
Chromlum Stannate;
Chromium Tin Oxide;
C.I. Pigment Red 121;
Mineral Lake;
Pigment Red 121;
Stannic chromate;
Tin Chromate;
Tin Violet		 77302;
77870?		 Chromlum stannate;
Tin Chromate prepared by the fusion of Tin(IV) Oxide and Chromium Oxide		 Dull reddish purple or bordeaux I I - B -
PR122 Quinacridone Red
 ACRA Magenta [LQ.a];
Acra Red;
ACRA Violet [LQ.a];
Antique Deep Red [HO];
Brilliant Magenta;
Brilliant Red Violet;
C.I. Pigment Red 122;
Crimson Lake;
Fragonard Pink [PF.o];
Gamma Quinacridone;
Gamma Quinacridone Magenta;
Intense Pink [UT.w];
Madder Lake Pink (hue) [SE.os];
Magenta [MR.o | MT | MH.o | MW.wo | SCH | WN.wo];
Magenta (Primary) [LK];
Magenta Red (Primary) [LK];
Magenta Light [TA.a];
Magenta Moyen [LB.o];
Magenta Quinacridone [DV.k | MA.p];
Old Holland Magenta [OH.o.w];
Opera Pink [DS];
Opera Rose [WN.w];
Opus (Vivid Pink) [DV.w];
Permanent Alizarin Crimson [HO.w];
Permanent Magenta [DR | LA.a];
Permanent Purple [SCH];
Permanent Rose [DR | LK];
Permanent Violet [LB.av.o];
Pigment Red 122;
Pigment Red E;
Pink;
Primary Magenta [HO.g];
Primary Red - Magenta [MA.a.g.o];
Process Magenta [DR];
Purple Magenta [SCH.g.w];
Raspberry;
Rose de Quinecridone [LB.o];
Rose Madder(hue) [HO];
Rose Violet [HO.a.ag.w.wo];
Rose Violet Transparent [HO.o];
Ruby Madder (hue) [PF.w];
Quindo Magenta;
Quindo® Red [KP.p];
Quinacridone Deep Purple [DR];
Quinacridone Fuschia [CH | OH.a | SE.a];
Quinacridone Magenta [GEN | BX.w | CAS.k | CR.a.o | DB.o | DR | DS.a.o | DV.af | GB.o.o | GO.a | KA.ad.o.p | LQ.a | SQ.a | TA.a | SCH.a | SE.o | SI.p | UT.w | WL.o | WN.g.o.w];
Quinacridone Pink Magenta [GU];
Quinacridone Pink [PF];
Quinacridone Purple [SE.w];
Quinecridone Red [GEN | SE];
Quinacridone Rose Deep [LA.a];
Quinacridone Violet [DB.a | MA.a.o(artis) | WN.a.o.w];
Rose Madder (hue);
Rose Madder (Quinacridone) [DR];
Rose Red [SV];
Rose Violet [HO.w];
Rose Violet Transparent [HO];
Ruby Red [SCH];
Studio Pink [KP.p];
Thalo Red Rose;
Thio Violet [GR.a.o.o.wo];
Thio™ Violet [GR.a.o.o.wo];
Translucent Magenta [SCHM.o];
Trans Magenta [CR | JO.ag];
Transparent Magenta [CR | JO.ag];
Transparent Rose [HO.o];
Verzino Violet [MA.o.w];
Vivid Pink [PF.o];		 73915 Quinacridone;

CAS 980-26-7;
CAS 16043-40-6		 Clean Bright blue shade light red

†Dulls slightly, Hue shift towards light mid red		 2-4* I 40-97 B
MSDS		 * There are transparent types of Quinacridone Red, mostly used for automotive finishes, and opaque forms of PR122 widely used in exterior paints as a blue shade red (Ref at Paint & Coatings Industry Magazine, article "Evaluation of Various Organic Color Pigments"January 1, 2010 ). From my experience the transparent types are more often used in artist's paints, but some paint makers may use the opaque versions.
PR123 Perylene Scarlet C.I. Pigment Red 123;
Kayaset Red E-B;
Perylene Scarlet [GU];
Perylene Vermilion;
Pigment Red 123;
Vermillion (hue)		 711450 Perylene;

CAS 24108-89-2		 Deep red; yellow under shade 2 I 45-50 A -
PR139 Chromophal BR Chromophal GR [GU];
Chromophal Red;
C.I. Pigment Red 139;
Pigment Red 139		 - Disazo;

CAS 12262-44-21		 Bright red yellow undertone - - - A -
PR144 Azo Condensation Red Azo Condensation Red;
Azo Red [KA.p];
Chromophal BR [GU];
C.I. Pigment Red 144;
CPT - Red [KP.p];
Gafast Pigment Red 144;
Pigment Red 144;
Red Chromophal R BRN;
Rose [HO];
Rose Dore[HO.wo];
Transparent Vermilion [HO.o]		 20735
200595?		 Disazo Condensation;
Gafast Pigment Red 144 (Tech Sheet Reference);

CAS 5280-78-4		 Mid-shade red 4 I-II 65 A
MSDS		 -
PR146 Naphthol Red AS Cadmium Red Hue [MA.g];
Carmine (hue) [LK];
Carmine Deep (hue) [SE.o];
Chapel Rose [HO.a];
C.I. Pigment Red 146;
Naphthol Red;
Naphthol Red AS [CL];
Permanent Carmine [CL];
Permanent Pink;
Permanent Red FBB;
Pigment Red 146
Primary Red - Magenta [MA]		 12485 Monoazo; Naphthol;

CAS 226-103-2		 Bluish shade red 4 II-III 50 A
MSDS		 -
PR147 Toluidine Red Carmine (hue);
C.I. Pigment Red 147;
Pigment Red 147		   Toluidine;

CAS 68227-78-1		            
PR148 Permanent Carmine C.I. Pigment Red 148;
Permanent Carmine [RGH.o.p];
Permanent Red 2 G;
Pigment Red 148;
Naphthol carmine		 - Monoazo - 2 I - A withdrawn
PR149 Perylene Red BX Bright Red [LB.o];
C.I. Pigment Red 149;
Crimson Lake [MH.o];
Paliogen® Red K 3580;
Perylene Red [GB.o | DV.k | HO.o | MW.o | WN.a.w];
Perylene Red BL;
Perylene Red BX [GU];
Perylene Scarlet;
Pigment Red 149;
Rose Madder Pale (hue) [BX.o];
Scarlet [RT.o];
Winsor Red Deep [WN.o]		 71137 Perylene;

CAS 4948-15-6		 Bluish red

†Darkens		 3 I 40-50 A
MSDS		 -
PR150 Pigment Red 150 C.I. Pigment Red 150;
Pigment Red 150;
PV-Carmine HR		 12290 Monoazo;

CAS 56396-10-2		 Bluish pink - - - A -
PR160 Naphthol Carbamide C.I. Pigment Red 160;
Naphthol Carbamide;
Naphthol Red F5RK;
Pigment Red 160		 12475 Organic; Naphthol Carbamide Blue red 3 I-II* 65 A *Said to be more lightfast in acrylics
PR166 Azo Condensation Red Azo Condensation Red;
Chromopthal Scarlet [GU];
Chromophtal Scarlet;
Chromophtal Scarlet BR;
C.I. Pigment Red 166;
CPT - Scarlet Red [KP.p];
Cromophtal Scarlet;
Cromophtal Scarlet R;
Heuco Red;
Microlith Scarlet;
Pigment Red 166;
Scarlet Red [CAS.k]		 20730 Disazo condensation;

CAS 3905-19-9		 Bright red yellow undertone 3 1-II* 65 A
MSDS		 *Said to be more lightfast in watercolor
PR168 Anthradquinone Scarlet Anthra Red [GU];
Anthradquinone Red;
Anthradquinone Scarlet;
Anthranthrone Red;
Antra Red;
Brilliant Red Light [MA.a];
C.I. Pigment Red 168;
Helio Brilliant Orange;
Indanthren Brilliant Orange RK;
Indanthrene Brilliant Orange;
Old Holland Bright Red [OH.o];
Permanent Red Deep [MA];
Permanent Red Light [MA.w.w];
Pigment Red 168;
Scarlet Lake Extra [OH.w];
Scarlet Red [KP.p];
Vat Orange		 59300 Brominated Anthranthron; Dibromanthrone;

CAS 4378-61-4

Bright yellow red

†Darkens

 3 I-II* 74 A
MSDS		 * May be more lightfast with protective coating or medium (Dick Blick Ref)
PR169 Rhodamine C.I. Pigment Red 169;
Copper Ferrocyanide Pink;
Fanal Pink BKF;
Rubine;
Pigment Red 169;
Pink		 45160:2 Copper ferrocyanide salt of Rhodamine;

CAS 12237-63-7		 Bright bluish pink 4 IV 55 B -
PR170 Naphthol Red AS Alizarin carmine (hue) [LB.o];
Antique Purple Red [HO.w];
B.O.N Arylamide;
Brilliant Red [AS];
Cadmium Red Deep Hue [HO.wo];
Cadmium Red Hue;
Cadmium Red Medium Hue [MW.wo | SE.o];
Cadmium Red Purple Hue [HO.wo];
Carbamide F5RK;
Carmine (hue) [DR | HO.ag | LK | SCH];
Carmine Red (hue) [SCH];
C.I. Pigment Red 170;
Crimson [WN.a.a];
Crimson (Primary Red) [DR];
Dark Red [SCH.w];
Dark Red (crimson) [SCH.w];
Deep Red [HO];
Deep Vermilion [CH];
Lefranc Red [LB.o];
Naphthal;
Naphthol AS;
Naphthol AS FAST RED F5RK;
Naphthol Carbamide;
Naphthol Carbamide AS;
Naphthol Carmine;
Naphthol Crimson [CR.a.o | JO.ag | LQ.a | UT.a | MT];
Naphthol Red [HO.wo | SE.a];
Naphthol Red Medium [DV.af | OH.a | SQ.a | TA.a | KA.p | WN.a];
Naphthol Rred, Medium Blue Shade1;
Naphthol Red (Mid-Tone) [DV.w];
Naphtol Red [KA.o];
Naphtol Red B.S. [KA.ad];
Napthol Red Brilliant [GU];
Napthol Red Brilliant Primary Red [SE];
Napthol Red Light [GU];
Naphtol Red Medium [KA.p];
Permanent Carmine [LA.a];
Permanent Maroon HFM;
Permanent Red [DS.a.i.o.p.w | KP.p];
Permanent Red B [KP.p];
Permanent Red Deep [DS.o | LA.a];
Permanent Red F3RK;
Permanent Red F5RK;
Permanent Vermilion;
Pigment Red 170;
Pure Red [HO.ag];
Ruby Red [CH];
Scarlet Lake [MH.o];
Shiva Red Medium [SV];
Spectrum Red Deep [AS]		 12475 Organic; Monoazo; B.O.N. Arylomide;

CAS 2786-76-7

Deep yellowish to bluish red*;

† Fades

 2-4 II* 40-70 A
MSDS1		 *PR 170 is a family of red azo compounds, some may not be quite as lightfast as others (Ref)
PR170:1 Naphthol Red C.I. Pigment Red 170:1;
Naphthol Red;
Pigment Red 170:1		 12475:1 CAS 2786-76-7 Deep Red 2 I-II 40 A -
PR171 Benzimidazolone Bordeaux Azoic Plum Violet [GU];
Benzimidazolone Bordeaux;
Benzimidazolone Red;
Benzimidazolone Maroon [WNd];
C.I. Pigment Red 171;
Fast Carmine HFM;
Naphthamide Maroon [DS.o.w];
Permanent Maroon HFMl;
Pigment Red 171;
Purple Madder (hue) [CR]		 12512 Benzimidazolone Maroon;

CAS 6985-95-1		 Deep dark violet red 4 I 45-70 A -
PR172 D&C Red No. 3 Aluminium Lake Antique Extra;
C.I. Pigment Red 172;
Erythrosine;
FD&C Red No. 3;
Geranium Lake;
Madder Lake (hue);
Pigment Red 172;
Rose Dore; 		45430:1 Phthalein Aluminium salt;
Erythrosine (CI 45430, Acid Red 51) fixed on a Aluminium base.

CAS 12227-78-0		 Mid-shade Red 4 III - A -
PR173 Rhodamine Red Bengal Rose [WN.g];
C.I. Pigment Red 173;
D&C Red No 19 Al Lake*;
Imperial Purple [SE];
Oleander;
Pigment Red 173;
Pigment Violet 1;
Rhodamine 610;
Rhodamine B [KP.p];
Rhodamine B Alumina Lake;
Rhodamine Lake;
Rhodamine Red;
Rose Malmaison;
Rose Tyrien [WN.g];
Solferino Lake [SE]		 45170:3 Rhodamine B Aluminum Lake;

CAS 12227-77-9		 Fluorescent Blue red 4 II-III** 55 B* * "The fluorescent dye Rhodamine B is toxic, and its use is banned in food, textiles, and cosmetics." "With proper preparation, the pigment Rhodamine B Lake is considered harmless, even if ingested." -Dick Blick Site (Ref).;
**Fluorescent paints are not recommended for permanent art work unless it will be completely protected from light.
PR174 Pigment Red 174 C.I. Pigment Red 174;
D&C Red No. 27 Aluminium Lake;
Phloxine B;
Pigment Red 174		 45410:2 Phthalein Aluminium Salt;

CAS 15876-58-1		 Mid-Shade Red - - - A Lipstick
PR175 Benzimidazolone Red HFT Benzimidazolone Maroon;
Benzimidazolone Scarlet;
Brilliant pink;
Brown Madder (hue) [CR | JO.ag];
C.I. Pigment Red 175;
Deep Rose Madder (hue) [MT];
Deep Scarlet [DS.w];
Gafast Pigment Red 175;
Permanent Brown Madder [CR.a.o];
Permanent Purple Madder [CR];
Permanent Red HFT;
Pigment Red 175;
Purple Red [KP.p];
Red Hot HFT [GU];
Scheveningen Purper Bruin [OH.o.w];
Scheveningen Purple Brown [OH.o.w];
Transparent Maroon;
Transparent Red [HO]		 12513 Monoazo; Benzimidazolone;
Gafast Pigment Red 175 (Tech Sheet Reference);

CAS 6985-92-8		 Brownish deep red 4 I 45 A
MSDS		 -
PR176 Benzimidazolone Carmine Alizarin Crimson (hue) [LK];
Benzimidazolone Carmine;
Benzimidazolone HF3C;
Carmine (hue) [DS.w | RT.o.wo];
Carmine Lake (hue) [CH];
C.I. Pigment Red 176;
Fast Carmine;
Mayan Carmine (hue) [GU];
Permanent Alizarin Crimson [WN.g];
Permanent Carmine HF3C;
Pigment Red 176;
Pigment Red HF 3C;
Purple-Red;
Rose Madder (hue) [AS];		 12515 Monoazo; Benzimidazolone;

CAS 12225-06-8		 Bluish red;

† Fades, Hue shift towards blueish		 4 II 45 A -
PR177 Anthraquinone Red Anthraquinoid Red [DS.a.o.w | GU | MG.a.o];
Anthradquinone Red [OH.wo];
Anthraquinone Red [KA.o.p];
Burgundy Wine Red [OH.o.w];
Carmine (hue) [RT];
Carmine Lake Hue [LB.o];
C.I. Pigment Red 177;
Crimson Lake [HO.o];
Cromophtal Red A3B;
Irgazin Red A2BN;
Permanent Alizarin Crimson [ UT.o.w?* | WN.k.o];
Permanent Crimson [WL.o.p;
Permanent Red A [KP.p];
Permanent Red Deep [MA.w.w];
Pigment Red 177;
Pyrazolone Red Scarlet [WL.o];
Rose Madder;
Ruby Madder;
Vat Red V;
Transparent Red [HO.o]		 65300 Anthradquinone;

CAS 4051-63-2		 Blue shade deep red 4 I-II 55 A
MSDS		 Good substitute for Alizarin Crimson but not the exact shade or chroma

?**Utrecht's Artist Watercolor "Permanent Alizarin Crimson" is PR83 according to the web site, but is PR177 according to the MSDS sheet. I believe it's probably PR177 because that would be more consistent with the name of "Permanent Alizarin Crimson", with an "excellent" lightfastness rating, and in their oil paints PR177 is under the same color name of "Permanent Alizarin Crimson". Also they they have normal "Alizarin Crimson" PR83 in acrylics, oil colors and watercolor.
PR178 Perylene Red Anthraquinone Red [GR];
C.I. Pigment Red 178;
Paliogen Red GG;
Paliogen® Red L 3880 HD;
Perylene Crimson [GU];
Perylene Red [DS.w];
Pigment Red 178;
Ruby Lake;
Scheveningen Red Medium [OH]		 71155 Perylene;

CAS 3049-71-6

Deep red

†Fades Slightly

 2 I - A
MSDS		 -
PR179 Perylene Maroon Alizarin Crimson (hue) [CH];
Anthraquinone;
Carmine (hue);
C.I. Pigment Red 179;
Deep Red [SCH.w];
Florentine Red [SCHM.o];
Indanthren Red 2G;
Indanthrene Red;
Madder Deep (hue) [SCH.a.o];
Madder Lake (hue) [SCH];
Madder Lake Deep (hue) [SCH];
Mader Red Deep (hue) [SCH];
Maroon Perylene [MG.w];
Paliogen® Maroon [KP.p];
Paliogen® Red K 4180;
Permanent Alizarin Crimson;
Perrindo Maroon [GU];
Perylene Carmine [GU];
Perylene Crimson [WL.o];
Perylene Maroon [GEN | CAS.k | DS.a.o.w | DR | DV.w | GR.o.w.wo | LA.a | MW.o | WN.a.g.w];
Perylene Maroon (Anthraquinone) [GR.wo];
Perylene Red [CAS.k | DR];
Pigment Red 179;
Scheveningen Red Medium [OH];		 71130 Synthetic organic;
Perylene;

CAS 5521-31-3

Deep violet red

†Fades, Dulls Slightly

 4 I L A
MSDS		 Good substitute for Alizarin Crimson but not the exact shade or chroma
PR180 Indo Red C.I. Pigment Red 180;
Indo red light (orange shade);
Pigment Red 180		 - Benzimidazolone Deep crimson red - - - A -
PR181 Daltolite Pink FF C.I. Pigment Red 181;
Cosmetic Pink RC;
D&C Red No 30 Lake;
Daltolite Pink FF;
Pigment Red 181;
Thioindigoid Magenta		 73360 Thioindigoid;

CAS 2379-74-0		 Bright yellowish red - III - A -
PR183 PV Fast Bordeaux HFR Azo Alizarin Transparent [RGH.o];
C.I. Pigment Red 183;
Fast Bordeaux HFR;
Pigment Red 183		 - Organic;
Monoazo barium salt;

CAS 51920-11-7 		Yellow to blueish red 2 I - A -
PR184 Permanent Rubine F6G Carmine Red [LA.a];
C.I. Pigment Red 184;
Hampton Red;
Magenta;
Naphthol Rubine;
Permanent Magenta;
Permanent Red Rubine [RGH.o];
Pigment Red 184;
Pigment Rubine F6B;
Rubine Red;
Wine Red [