The Color of Art Pigment Database: Pigment Orange, PO

N/A

Antimony Orange

Antimony Orange;

Antimony Vermilion;

Golden Sulphur of Antimony;

Golden Yellow;

Goldschwefel;

Lymphoscan;

Pigment Red 107

77060

Antimony trisulphide;

Sulfide of Antimony

Bright Orange

1

I

-

D

Decomposed by alkalis

N/A

Chamotte

Chamotte [KP.p]

N/A

Ground ceramic refractory brick; mostly clay, color probably from iron oxides

light red orange

-

I

-

A

used as an additive for lime mortars to increase the stability and add colour

N/A

IRGAZIN Orange 2037

IRGAZIN Orange

N/A

Diketo-pyrrolo-
pyrrole/Isoindoline

Bright Orange

1

I

55

A

Intimate mixture

Pyrrole Orange ;

Experimental Orange 107;

Experimental Orange RL 107

IRGAZIN® DPP Cosmoray Orange;

Irgazin® Cosmoray® Orange L 2950;

Pigment Orange 107*;

Pigment Orange 767B;

PO108 (experimental)*

Organic;

high-performance orange
diketo-pyrrolo-pyrrole (DPP) pigment,

Substituted pyrrol

(Ref: Ciba® IRGAZIN® DPP Cosmoray™ Orange - PDF);

Irgazin is a range of high performance organic pigments from selected chemical classes with a broad range of colors, highly indicated for applications where resistance to extreme conditions and/or coloristical, tinctorial properties and high transparency are required.(Ref from BASF site)

(Ref: Australian NICNAS, National Industrial Chemicals Notification and Assessment Scheme - PDF report); (Ref: BASF press release);

BWS
8;8;8

A

MSDS

*Not an actual Color index number; a Colour Index Number/Name has not been allocated for this pigment.

Press Release PDF

Technical Data PDF

N/A

Kibeni Orange

IWA-Enogu® [KP.p];

Kibeni Orange;

Vanadium-Chromite Spinel

N/A

Vanadium-Chromite Spinel;

Cadmium glass powder

Mid Orange

-

I

-

-

-

N/A

Lead-tin Orange

Arancione di piombo-stagno;

Blei-Zinn Orange;

Lead-tin Orange [NP.o.p];

Lead-Tin Yellow;

Orange de plomb étain;

N/A

Lead-Tin Oxide;

Lead Stannate;

CAS 12036-31-6

Bright Yellowish Orange

1

I*

16

C

Siccative in oil paint.
*May darken by atmospheric hydrogen sulfide

N/A

MayaCrom® Orange OR2800

MayaCrom® Orange OR2800*;

Mayan Orange [DS.wd**]

N/A

Patented Organic-Inorganic hybred based on the chemistry of Mayan Blue with a unique nano crystal lattice. Tech data sheet for reference, also Reference the Patent application.

Article about Hybred Pigments and Mayan Blue in New Journal of Chemistry 2005, 29, p.57–58 (Article Reference PDF);

Bright yellow orange

3

I

65

A

MSDS

* Other pigments of this type have color index names granted (ie, PR287), this color may receive one at a later date, but not yet awarded a CI name. Currently recommended for plastics but has good potential value as artist pigment.

"evolved from work done at the University of Texas-El Paso to reconstruct the unique vibrant blue color developed by the Maya civilization more than 1000 years ago, using an inorganic and organic component to produce a highly stable hybrid pigment."

TOR Minerals International Press release, (Ref Mayan Pigments, Inc.);
** more info on the Dan Smith "Mayan" PrimaTek™ artist paints and other minerals used for art pigments at the watercolor Handprint.com site.

N/A

Mineral Orange

Mennige;

Mineral Orange;

Mineral Red;

Minium;

Orange lead;

Pigment Red 105

Red Lead;

Saturn Red;

Saturnrot

N/A

Lead tetraoxide;

CAS 1314-41-6

Red to Mid Orange

1

II*

8

C

*May be affected by hydrogen sulfide. Also It may react with pigments that contain free sulfur; More permanent in oil (Ref)

N/A

Realgar

Arsenic Orange;

Realgar [GEN | NP.p];

Red orpiment

N/A

Arsenic sulfide, Natural mineral Realgar (Ref);

CAS 1303-33-9

Orange; †Hue Shift yellowish

1

III*

-

D

Said to be incompatible with lead or copper pigments. (Ref Natural Pigments);

*light exposure may convert it to orpiment and arsenious oxide (Ref NP); See Pararealgar under Yellow.

NO2

Kamala

Kamala;

Natural Orange 2;

Resina Kamala [KP.p]

-

From the fruit of the plant Mallotus philippensis

Brilliant yellow to red orange

4

III

-

B*

*Used as a treatment for worms, Paralysis of the intestinal tract is a side effect.

NO4

Annatto

Annatto;

Annatto extract;

C.I. Natural

Orange 4;

Natural Orange 4;

75120

Extract of the seeds of the plant Bixa orellana; Norbiksiini annatto; Primary coloring due to bixin and norbixin; A bright orange lake is prepared by precipitating annatto on alumina trihydrate.

Annatto- A natural orange dye obtained from the lipstick plant which is a small tree, Bixa orellana, native to Central and South America. (Ref at Boston Fine Arts CAMEO Database);

CAS 8015-67-6

Bright Orange brown to golden yellow

4

III

-

A

-

NO5

Carajurin

Carajurin;

Carucru;

Chica;

C.I. Natural Orange 5;

Natural Orange 5

75180

Xanthone Carajurin; Extract from the leaves of Bignonia Chica

Red, Orange Yellow

4

III

-

A

-

NO6

Henna

C.I. Natural Orange 6;

Henna;

Lawsone;

Natural Orange 6

75486

Lawsonia Inermis;

2- hydroxy-1, 4- naphthoquinone;

lawsone:

CAS 83-72-7;

Yellow brown

4

III

-

A

-

PO1

Hansa Orange

C.I. Pigment Orange 1;

Dinitroaniline orange;

Hansa Yellow 3R;

Pigment Orange 1;

Orthonitroaniline Orange

11725

Monoazo;

Dinitroaniline; orthonitroaniline;

mono-nitro compound, specifically ortho-substituted

CAS 6371-96-6

Bright yellowish orange

-

II-III (NR)

-

A

-

PO2

Pigment Orange 2

C.I. Pigment Orange 2;

Hansa Orange RN;

Federal Orange 1002;

Kromon Azo Orange;

Orthonitraniline Orange;

Orthotone Orange Toner RA 5630;

Ozark Orange X 1481;

Permanent Orange;

Pigment Orange 2

12060

Monoazo;

Orthonitraniline;

Naphthol;

Mono-nitro compound, specifically ortho-substituted;

Prepared by coupling o-nitroaniline with -naphthol (Ref Pigment Compendium, Copyright © 2008, p.38)

2-Naphthalenol,1-[(2-nitrophenyl)azo]- (9CI); 2-Naphthol, 1-(o-nitrophenylazo)- (6CI);

1-[(2-Nitrophenyl)azo]-2-naphthol;1-[(o-Nitrophenyl)azo]-2-naphtho

NSC 65821

CAS 6410-09-9

Bright reddish orange

-

III (NR)

-

A

-

PO3

Hansa Orange

C.I. Pigment Orange 3;

Pigment Orange 3;

Orthonitroaniline Orange

12105

Monoazo; Orthonitroaniline;

(Ref GuideChem.com);

(Ref from dyestuffintermediates.com)

CAS 6410-15-7

Brite reddish orange

-

II (NR)

-

A

Fluorescent Color often used as a brightener

PO5

Hansa Orange RN

Azo Orange;

C.I. Pigment Orange 5;

D & C Orange No. 17;

D.N.A. [GU];

Dinitraniline Orange [KA.p];

Dinitroaniline Orange;

Dinitroaniline Red;

Dinitronialine Orange [KA.ad];

DNA Orange [GU.ad];

DNA Orange RN-B;

Firewall Red [MA.o(HD)];

Hansa Orange;

Oasis Orange;

Permanent Orange [KA.o];

PERMANENT ORANGE 5;

Permanent Red GG;

Permanent Red Light [LKd];

Permanent Red Orange [WL.o];

Pigment Orange 5;

Seville Red [MA.o(Med)];

Studio Orange [KP.p];

Vermilion (hue) [CR.ao.o];

Vermilion Orange [CR]

12075

Synthetic Organic;

Monoazo; 2-Naphthalenol; 1-[(2;4-dinitrophenyl) azo;

Dinitroaniline;

Orthonitroaniline;

Magruder® Pigments for imagination "Oasis Orange" (PO5) technical bulletin

C₁₆H₁₀N₄O₅

CAS 3468-63-1

EC  222-429-4

Bright reddish orange;

Staining w/ med. tinting strength

† Fades

2-3

II (ASTM oil & acry.)

II-III* (NR in WC)

BWS
6;6-7;6 (Chroma)

BWS
6;5
(Lansco)

BWS
6;5;4
(Guerra)

BWS
6; 4
(Kremer)

40-53

A -B**

MSDS

MSDS

* Not rated by ASTM in watercolor, Light fastness questionable in watercolor paints, (Ref. handprint.com watercolor paints); Poor results above may be due to testing on a single watercolor formulation, performance in oil paints may be different.
Advisable to make your own tests before using for permanent artwork.

** Avoid dust & spray,

PO13

Benzidine Orange

Brilliant Orange [HO.g];

Cadmium Red Orange Hue [SE.o];

C.I. Pigment Orange 13;

Diarylide Orange;

Disazo Orange;

FAST ORANGE RG;

Vibfast Orange 4051;

Orange [AS | HO.ag];

Orange Lake [MH];

Orange Lake Light [WN.g];

Orange no.204;

Permanent Orange G;

Persian Orange Light [LB.o];

Pigment Orange 13;

Pyrazolone Orange;

Red Orange [SCH];

Spec Orange [AS];

Vibfast Orange 4051

21110

Synthetic Organic;

Dichlorobenzidine;

Pyrazolone;

Disazopyrazolone;

CAS 3520-72-7

Bright yellow orange;

Good tinting strength

3

III (NR)*

BWS
5-6;3*
(Lansco)

55

A

MSDS

Cannot be exposed to temperatures higher than 200°C due to possible decomposition

* Not rated by the ASTM. Blue wool scale from pigment manufacturers indicate "fair" lightfastness in masstone, but poor in tints.
Sennelier give their 'Cadmium Red Orange Hue' oil paint, 3 stars, their highest rating.

Might be a pigment to avoid except for designer gouache or other impermanent art that is just meant to be photographed, or books & journals were it would be protected from light.

PO16

Benzidine Orange

Benzidine Orange R;

C.I. Pigment Orange 13;

Dianisidine Orange;

Dianisidine Orange 2915;

Fast Orange RDN;

Orange (Turner);

Orange Lake Light;

Pigment Orange 16

21160

Synthetic Organic;

Disazopyrazolone;

(Ref: Lansco Pigment tech specs);

CAS 6505-28-8

Bright yellowish thru reddish orange

2

IV

BWS
4-5; 2-3
(Lansco)

45

A

MSDS

-

PO17

Persian Orange

C.I. Pigment Orange 17;

Dainichi Naphthol Orange;

Eljon Orange P;

Isol Orange GR;

Isol Orange GRT;
Lake Orange;

Lake Orange GR;

Ohio Orange;

Perca Orange GR;

Persian Orange;

Pigment Orange G;

Pigment Orange 17;

VulcafixOrange R;

Vulcafor Orange P;

Vulcol Orange GR

15510

Synthetic Organic;

Monoazo;

Barium lake of azomethine dye;

CAS 15782-04-4

Bright orange to reddish

-

II

39

A

-

PO17:1

Persian Orange

C.I. Pigment Orange 17:1;

Persian Orange;

Pigment Orange 17:1

15510:1

Synthetic Organic;

Monoazo;

Barium lake of an azo dye

Bright reddish orange

-

II

-

A

-

PO20

Cadmium Orange

C.I. Pigment Orange 20;

C.P. Cadmium Orange [GO.a.ag.ao | SQ.a | TA.a. | WL.o.p ];

Cadmium Orange [GEN | AS | BX.o.w | CAS.k | CR.a(jo).ao.o | DR.a.t | DSd | DV.k.o.w | GB.o | GR.o* | HO.o | JO.a | LK | LQ.a | MA.o.o(artis).p.w | MG.a.g.o.w | MH.o | MR.o | MT | RGH.o.p | RF.e | RT.a.o.wo | SCH.a.g.o.o(Mus).p | SE.a.os | SH.w | SQ.a | UT.a.o.w | WL.o.p | WN.a];

Cadmium Orange (CP) [GO.a.ao];

Cadmium Orange Dark [GU.pd];

Cadmium Orange Deep [GB.o | KA.o.p | SCH.w];

Cadmium Orange Light [BR | GU.pd | KA.o.p | LA.a | SCH.w];

Cadmium Orange Light CP [GU.p];

Cadmium Orange Medium [BR | LA.a];

Cadmium Orange Medium CP [GU.pd];

Cadmium Orange Medium CP (red shade);

Cadmium Orange Medium Xtra [GU];

Cadmuim Medium No. 1 [KP.p]

Cadmium Orange Pure [ UT.o.w];

Cadmium Orange Xtra Light C.P. [GU];

Cadmium Orange Yellow [HO.o | SE.p];

Cadmium Orange Yellow Shade [BR | HO.o];

Cadmium Red Light [GR.a?* | LK | SE.a | SCH.a.o.p];

Cadmium Red Orange [BA.o | | BX.o.w | SCH.w | SE.a.o.p | SQ.a];

Cadmium Red Orange Genuine [SCH];

Cadmium Red Scarlet;

Cadmium Scarlet;

Cadmium Selenium Sulfide;

Cadmium Sulfide;

Cadmium Yellow Extra Deep;

Cadmium Yellow Deep [AS | HO.o.wo | LK | SCH.a.g.o.p | UT.a.o.w];

Cadmium Yellow Deep Pure [UT.o.w];

Cadmium Yellow 3 Deep [ SCH.o(Mus)];

Cadmium Yellow Orange [BX.w | LB.o | SE];

Cadmium Yellow Orange Genuine [SE.t];

Chinese Orange;

Greenokite;

Orange Cadmium (Genuine) [CH];

Orange Cadmium Yellow [PF.w];

True Cadmium Orange [PF.o];

Pigment Orange 20

77202

Synthetic Inorganic;

Cadmium Selenosulphide;

LBNL Pigment Database Spectral radiative properties;

Cadmium Orange @ the Cool Color Database;

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

"Cadmium Orange is a color modification of cadmium sulphide (Cadmium Yellow). (Ref. Toch; The Chemistry and Technology of Paints, p.73) by making the solution slightly acid a yellow shade is produced, by altering acid ratios and adding ammonium sulphide deeper orange shades may be made." (Ref. Painting Materials: A Short Encyclopaedia; By Rutherford John Gettens, George Leslie Stout, 1966, p.100-101)

Some brands of cadmium paints may in fact be composed of Cadmium-Barium Pigments even if indicated on the label as pure PO 20* (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 12656-57-4

Bright yellowish thru to reddish orange, (depends on modifiers used during synthesis);

Very staining with very good tinting strength;

† Fades, whithens, may fade or whiten when exposed to very damp conditions and excessive direct sunlight, Indoor lights have little or no effect.

1-2

I (ASTM)

BWS
8;8;8
(Chroma)

BWS
8;8;8
(Guerra)

BWS
8; 8; 8
(Kremer)

17-20

B**

For information on PO-20 in name brand water color paints see PO20 @) handprint.com

* Grumbacher Cadmiums are "Cadmium-Barium" Pigments should be indicated with ':1' (colon 1) after the color index name. (ie. PO20 should be PO20:1). (Ref: Grumbacher Pre-Tested Pigment Info dating around 2010-12); See below for more info on cadmium barium pigments, and why it matters.

** all cadmium paints require a PROP 65 label.

According to the ECHA, no hazards have been classified for Cadmium Orange: (Ref. ECHA European Chemical Agency)

Note: Cadmium pigments are nearly insoluble in water, limiting their potential toxicity. They are carefully engineered to meet extremely low solubility limits.
"A risk assessment of these products conducted by the EU concluded that these products offer no significant hazard to either human health or to the environment."
(Ref. Cadmium.org)

Water soluble Cadmium compounds can be toxic if ingested or if the dust is inhaled in large amounts or exposure over long periods, they are a known reproductive and developmental toxicants.
Toxicity Information
@ - pesticideinfo.org

Avoid dust & spray

Do not ingest.

PO20:1

Cadmium-Barium Orange

Cadmium-Barium Maroon [GR.o.wo?*];

Cadmium-Barium Orange [GR.o.wo?*];

Cadmium-Barium Red Deep [GR.o.wo?*;

Cadmium-Barium Red Light [GR.o.wo?*];

Cadmium-Barium Red Medium [GR.o.wo?*];

Cadmium-Barium Red (Vermilion Hue) [GR.o.wo?*];

Cadmium-Barium Yellow Orange [GR.o.wo?*];

Cadmium litho Orange Dark [GU.pd];

Cadmium litho Orange Light [GU.pd];

Cadmium litho Orange Medium [GU.pd];

Cadmium Orange (hue) [BA.a | CL | SV];

Cadmium Orange #1, medium (hue) [SI.p];

Cadmium Orange dark LITHO (red shade);

Cadmium Orange Light LITHO (yellow shade);

Cadmium Orange medium LITHO (red shade);

Cadmium Orange No.0 Very Light (hue) [KP.p];

Cadmium Orange No. 0.5, light (hue) [KP.p];

Cadmium Orange No. 1, medium (hue) [KP.p];

Cadmium Orange No. 2 Deep (hue) [KP.p];

Cadmium Red Medium (hue) [GR.o?*];

Cadmium Red Pale (hue);

C.I. Pigment Orange 20:1;

Vermilion (hue);

Pigment Orange 20:1

77202:1

Synthetic Inorganic;

Cadmium Selenosulphide

co-precipitated with Barium Sulfide

Bright Yellowish thru to reddish orange;

Staining w/ good tinting strength

† Fades, whitens, may fade or whiten when exposed to very damp conditions and excessive light.

1

I (ASTM)

BWS
8;8;8
(guerra paint)

17-20

B**

Much cheaper, Slightly less saturated and slightly less tinting strength as PO20;

Some Cadmium-Barium pigments can be up to almost 60% barium sulphate. (Ref: Painting Materials, A Short Encyclopedia, By Rutherford John Gettens, George Leslie Stout)

** see above

PO21

Chrome Orange

American Vermillion (hue);

Australian Cinnabar (hue);

Austrian Red;

Austrian Cinnabar (hue);

Chinese Red;

Chrome Cinnabar (hue);

Chrome Red;

Chrome Scarlet;

Chrome Orange;

Chrome Yellow;

Chromorange;

C.I. Pigment Orange 21;

Crocoite*;

Derby Red;

Garnet Chrome;

Golden Orange Yellow;

Lead Oxide Chromate;

Laque Mineral;

Molybdate Chrome Orange;

Molybdate Orange;

Molybdate Red

Orange Chrome;

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;

Vauquelin;

Victoria Red;

Vienna Red

77601

Inorganic;

Basic lead (II) -chromate;

Method of making Chrome orange at webexhibits.org

CAS 1344-38-3

Bright intense yellowish thru reddish Orange

1

II-III? (NR)

Said to be lightfast but may darken by atmospheric sulfates

30

C**

* Crocoite is a natural mineral containing lead chromate (Ref)

** it is unadvisable to "eat lead"

Avoid dust and spray.

Keep away from children & pets.

PO21:1

Chrome Orange

Chrome Orange;

C.I. Pigment Orange 21:1;

Pigment Orange 21:1;

Inorganic;

lead (II) -chromate precipitated onto a silica base (Pigment Compendium, Ref)

Bright intense yellowish thru reddish Orange

1

II-III:? (NR)

Said to be lightfast but may darken by atmospheric sulfates

-

C

See above

C.I. Pigment Orange 22;

C.I.Pigment Orange 22 (8CI);

Microsol Orange GR

Pigment Orange 22;

12470

CAS 6358-48-1

Synthetic Organic;

Single azo

C25 H19 Cl2 N3 O3

2,5-Dichlorobenzenamine diazotization, and N-(2-ethoxyphenyl)-3-hydroxy-2-naphthamide coupling.

Doesn't appear to be currently manufactured as a pigment, there is little info on this pigment [Ref. DyeStuff]

*? Appears to be on a Toxic Substance list, however Azo Pigments are generally thought to be safe

PO23

Cadmium Vermilion Orange

Cadmium Cinnabar;

Cadmium Mercury Orange;

Cadmium Mercury Sulfide;

Cadmium Vermilion Orange;

Cadmium Yellow Orange;

C.I. Pigment Orange 23;

Mercadium Orange;

Mercadium Orange Dark [GUd];

Mercury Cadmium Sulfide;

Pigment Orange 23

77201

Inorganic;

Concentrated Cadmium Sulfide plus 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)

Barium Sulfate content not to exceed 15%.

CAS 1345-09-1

Bright yellow to red orange;

Staining w/ good tinting strength, slow drying in oil.

† Whitens / darkens, May whiten when exposed to excessive sun over a long time, may darken by atmospheric Sulfides, if not properly covered in binder, or of poor manufacture.

Sensitive to acids, both oil binders & gum arabic are slightly acidic.

1

I (ASTM oil, acryl., NR in WC)

17-20

D*

I don't believe this pigment is still being manufactured, possibly still made in China for use in kids toys (jk). I could not find any source of this pigment, Guerra Paint & Pigment not longer has it.

* Any paint containing Cadmium or Mercury would require a PROP 65 label in CA.;

Can cause allergic skin reaction;

Can form hydrogen sulfide in combination with stomach acid, DO NOT ingest.
Do not heat.
Aviod dust & spray.

Free base cadmium & mercury are both toxic and effects are accumulative, however there should be very little, if any, free cadmium or mercury in a pigment preparation.

PO23:1

Cadmium-Barium Vermillion Orange

Cadmium-Barium Vermillion Orange;

Cadmium Mercury

Lithopone Orange;

C.I. Pigment Orange 23:1;

Mercadium Litho Orange Medium [GU];

Mercadium Lithopone Orange;

Pigment Orange 23:1

77201:1

Inorganic;

Concentrated Cadmium Sulfide plus Mercuric Sulfide co-precipitated with Barium Sulfate;

Can be up to 60% Barium Sulfate.

Bright red orange; slightly weaker and less saturated than PO23

Less Staining & tinting strength, than PO23 do to it's larger Barium content, slow drying in oil.

1-2

I (ASTM oil, acryl., NR in WC)

17-20

D*

Cadmium-Barium pigments can be up to almost 60% barium sulphate. (Ref: Painting Materials, A Short Encyclopedia, By Rutherford John Gettens, George Leslie Stout)

* See PO-23 Cadmium Vermilion Orange above, all hazards would be the similar. Maybe slightly less so as the cadmium & mercury content would be diluted, because of the higher amount of barium sulfate filler.

Chromo Orange 4R

C.I. Pigment Orange 31;

Chromo Orange 4R [GU.pd.p];

Pigment Orange 31

Disazo Condensation;

Chemical structure and composition can be found at Pigment Orange 31 on PubChem Chemical Database

C46-H28-Cl4-N6-O4;

CAS 5280-74-0
12286-58-7

EC 226-105-3
602-899-0

Bright red orange;

Strong tinting strength

(NR)*

BWS
7; 6; 5
(Guerra)

* Not rated by the ASTM. Pigment supplier BWS indicates good lightfastness. Seems to have poor weather fastness though.

** no hazard information, typically Disazo Condensation pigments are pretty harmless

PO34

Pyrazolone Orange

Azo Red Light [RT.o];

Cadmium Orange (hue);

Cadmium Red Light Hue [LK];

C.I. Pigment Orange 34;

Cinnebar Red (hue) [LKd];

FastOrangeRL;

Marigold Opaque Orange [SI.p];

Permanent Orange RL;

Permanent Orange RLO;

Pigment Orange 34;

Pyrazolone Orange;

Pyrazalone Orange RL-70;

Pyrazalone Orange RLO;

Scheveningen Red Scarlet [OH.o.w];

Vermilion (hue) [LK | RT];

Vermilion Light (hue) [LK];

Vermilion Red (hue);

Vermilion Red Light (hue)

21115

Synthetic Organic;

"A diarylide pigment manufactured by coupling tetrazo 3,3'- dichloro-benzidine onto 3-methyl-l-(4'methylphenyl)-pyrazol-5-one. This orange is a bright, reddish shade offering moderate
lightfastness. (Ref Paint and Coating Testing Manual: 14th ed.; Ed. by J.
Koleske; ASTM; 1995; p.201.

Disazopyrazolone;

Pyrazolone (Diarylide)

Chemical data @ PubChem

CAS 15793-73-4

EC 239-898-6

Bright orange to orange red;

Staining w/ average tinting strength.

† Fades, darkens

1-3*

II-IV (NR)?*

BWS (Trans.)
5-6; 4-5
(Lansco)

BWS
6-7; 5-6 (opaque)
(Lansco)

40-79

A

* Not rated by the ASTM. There are conflcting reports on the light fastness of paints made with PO34.

Old Holland claims their transparent watercolor 'Scheveningen Red Scarlet ' (PO34) is a "Lightfast pigment according to ASTM category 1 and 2" - direct quote.

Talens Van Gogh Oil Paint 'Azo Red Light' (PO34) claims "Good to excellent lightfastness for colour retention over time" - direct quote

However, the lightfastness was rated poorly in watercolors with extremely bad results when tested by Bruce MacEvoy @ handprint.com. (See Handprint.com PO 34.)

The very poor results seen by Handprint may be due to testing on a single formulation of watercolor paint. (Lukas, 'Cinnebar Red hue' which is now discontinued). Performance may be better in other brands or in oil and acrylic paints. Blue Wool Scales from pigment manufacturers indicate 'fair' to 'good' light fastness, especially in the opaque version.

Of course, we must take paint brand ratings with a grain of salt, as they are likely to exaggerate their paints properties, and real world tests like that performed at Handprint are more reliable especially on the exact paint(s) tested.

This pigment is available in different shades and opaqueness. Light fastness is said to be better in the redder, more opaque grades. (Ref at Paint & Coatings Industry Magazine, article "Evaluation of Various Organic Color Pigments" January 1, 2010 note: registration required to read the whole article)

I would advise to make your own tests before using this pigment in permanent artwork, and probably would avoid it altogether in water color.

PO36

Benzimidazolone Orange HSL

Benzimida Orange Deep [DV.o.w];

Benzimidazolone Orange [WN];

Benzimidazolone Orange HL [GRd];

Brilliant Orange [MA.a.];

Cadmium Orange Hue [MR.o];

Cadmium Red Pale Hue;

C.I. Pigment Orange 36;

Fast Orange GWT;

Imidazolone Orange [HO.wo];

Orange Red [HO.a];

Permanent Orange [MA.w];

Permanent Orange HSL [GU];

Persian Yellow [MR.o];

Pigment Orange 36;

Pyranthrone Orange [KP.P]

Red Orange [SCH.p];

Scarlet Orange [CAS.k];

Vermilion Permanent (hue) [AS]

11780

Synthetic Organic;

Monoazo; Benzimidazolone;

CAS 12236-62-3

EC 235-462-4

Red shade scarlet orange;

Staining w/ average tinting strength.

2-3

I (ASTM in oil & acryl., NR in WC)*

BWS**
8; 7-8 (Alkyd)
6-7; 6-7 (Ink)
(Lansco)

BWS
8;8;8
(Guerra)

BWS
8; 8; 8
(Kremer)

55-72

A

(Avoid dust & spray)

* Not rated by the ASTM in water colors.

Found to have excellent light fastness in the watercolor brand tested by Bruce MacEvoy @ handprint.com

Most brands rate their paints including PO-36 with their highest rating for light fastness.

** 1st set of BWS from Alkyd paint, 2nd set from offset ink, at Lansco pigment Data. It appears this pigment may be more light fast in oils, Alkyd or Acrylic paints.

BWSs from
Guerra paint & Kremer puts it as excellent LF.

PO38

Naphthol Orange

Azo Burnt Orange [BR];

Azo Burnt Orange Transparent [RGH.o.p];

C.I. Pigment Orange 38;

Pigment Orange 38;

Naphthol Orange

12367

Synthetic Organic;

Naphthol AS;

CAS 12236-64-5

Bright reddish to yellowish orange

4

II

87

A

-

PO40

Pigment Orange 40

C.I. Pigment Orange 40;

Pigment Orange 40;

Vat Orange 9

59700

Synthetic Organic;

Unsubstituted pyranthrone;

Pyranthrene-8, 16-dione

CAS 128-70-1

-

II

-

-

production discontinued

PO41

Pigment Orange 41

C.I. Pigment Orange 41;

Pigment Orange 41;

Vat Orange 9

59700

Synthetic Organic;

Pyranthrone;

Pyranthrene-8, 16-dione

CAS 128-70-1

-

-

-

-

-

Apparently the same pigment as PO40?

PO43

Perinone Orange

Brilliant Orange [MA.a];

Cadmium Orange Hue [WN.wo];

Cadmium Red Light Azo (hue);

C.I. Pigment Orange 43;

Indanthrene Orange [MA.o(artis)];

Indo Orange Red [BA.a | LQ.a | UT.a];

Orange [RT];

Orange Lake [MA.o.w];

Perinone [GU];

Perinone Orange [CAS.k | DS.a.o.w | DR.a| MW.o | WN | UT.w];

Permanent Red Light [MA];

Permanent Orange [MA.p];

Permanent Red Orange [MA.o];

Pigment Orange 43;

Vat Orange [ GO.a.af.ag ];

Vat Orange 7;

Vermilion (hue) [RT.wo]

71105

Organic synthetic Anthraquinone;

Lake of Vat Orange 7 dye;

Isoindoline-Methine

Perinone;

CAS 4424-06-0

Mid to red shade orange;

†Fades, darkens slightly

2-4

I (ASTM oil & acryl. NR in WC)*

BWS
5-6;6-7

BWS
6-7; 7; 8
(Guerra)

48-83

A

* Rated very good (II) light fastness in tests of three popular water color brands by Bruce MacEvoy @ handprint.com

**BWS data from Alkyd paint, appears to be most lightfast in tints (Ref: Lansco Pigment Data)

***BWS
from (guerra paint) seems to confirm this pigment is much more light fast in tints

PO45

Chrome Orange

American Vermillion (hue);

Chrome Orange;

Chrome Yellow;

Chromorange;

C.I. Pigment Orange 45;

Crocoite*;

Derby Red;

Molybdate Chrome Orange;

Orange Chrome;

Persian Red;

Pigment Orange 21;

Pigment Orange 45;

Rosetto Chrome;

Vauquelin;

Victoria Red

77601

Inorganic;

lead chromate;

CAS 1344-38-3

Bright intense yellowish thru reddish Orange

1

III

30

C**

* Crocoite is a natural mineral containing lead chromate (Ref)

** all paints with lead content require a PROP 65 label in CA.

Everyone knows the dangers of lead poisoning, it is accumulative and builds up in your body. However if used sensibly in the studio, it should pose no real problems.

Keep away from children or pets, lead has a sweet taste which may encourage ingestion by people who don't know any better (Lead was used as an artificial sweetener in ancient Rome).

Do Not eat, drink or smoke when working with the pigment.

Avoid getting on skin, clothing or other areas in your studio.

Avoid dust & spray, use a dust mask when working with the dry pigment or spraying.

PO46

Pigment Orange 46

C.I. Pigment Orange 46;

Clar-All Red;

Clarion Red;

Lake Orange B;

Sunset Yellow;

Sunbright Yellow;

Pigment Orange 46

15602

Synthetic Organic;

Monoazo;

Beta Naphthol;

Monoazo Beta-Naphthol Lake of Barium (Ferro)

CAS 63467-26-5

Bright reddish orange

3

IV (NR)

A

MSDS

Used mostly in inks

PO47

Quinacridone Orange

C.I. Pigment Orange 47;

Pigment Orange 47;

Quinacridone Orange [GU.pd];

Quinacridone Orange (red shade)

-

Synthetic Organic;

Quinacridone

Deep reddish orange;

Moderately staining w/ good tinting strength

3-4

I (NR)*

BWS
8; 8; 8
(Guerra)

-

A

* not rated by the ASTM. Blue wool scales suggest excellent light fastness, other pigments of this type generally have very good / excellent lightfastness. However choice of binder my have an affect on permanence.

I would make your own tests in the binder / medium of choice to be sure if lightfastness in adequate for your application.

PO48

Quinacridone Burnt Orange

ACRA Gold;

C.I. Pigment Orange 48;

Cinquasia® Gold YT-923-D;

Cinquasia® Gold, red-gold [KP.p];

Cinquasia® Red Gold [KP.p];

Golden Orange [TA.a.af];

Monastral Gold;

Pigment Orange 48;

Quinacridone Burnt Orange [CAS.k | DS.a.o.w | DV.w];

Quinacridone Gold, Deep;

Quinacridone Orange [GR.o.wo];

Quinacridone Red Gold [GU];

Quinacridone Red Orange [OH.a];

Quinacridone Rust [MG.w];

Quindo Gold

73900+ 73920

Synthetic Organic;

Not a simple mixture of pigments;

Oxidation of dihydroquinacridone under conditions that produce a mixed crystal phase of Quinacridone & Quinacridonequinone. The product produces a unique x-ray diffraction pattern that is different from either of the quinacridones on their own or in a mix.;

C.I.Pigment Violet 19 (C.I. 73900) and C.I.Pigment Red 206 (C.I. 73920) co-precipitated. The exact derivative has not been disclosed;

C20-H12-N2-O2 / C20-H10-N2-O4

CAS 1047-16-1;

CAS 1503-48-6;

CAS 71819-74-4

Deep golden reddish orange;

Moderately staining w/ Moderate tinting strength

3-4

I (ASTM oil, acryl.)

II (ASTM WC)*

BWS
8; 8; 8
(Kremer)

40-50

A*

MSDS

*Avoid dust

Unique hue & mixing properties, similar to some burnt siennas or red ochers, but is more saturated and transparent;

Quinacridone Burnt Orange (PO48) more Information with watercolor swatches, brand comparisons & mixing info @ In Liquid Color, Youtube Channel

* AMST rated II (very good) in watercolors; Most brands rate their PO-48 paints with their highest rating.
It was also rated "excellent" by Bruce MacEvoy in a real world watercolor test on the Daniel Smith watercolor paint. See PO 48 at Handprint.com

PO49

Quinacridone Gold

C.I. Pigment Orange 49;

CIinquasia® Gold [KP.pd];

Golden Lake [MA.od.wd];

Monastral Deep Gold;

Pigment Orange 49;

Quinacridone Deep Gold;

Quinacridone Gold [DS.ad.od.wd | GU.pd.p | MA.a* | WN.a];

Quinacridone Gold (GS/Green Shade) [DS.a.o.w];

Quinacridone Sienna;

Quindo Gold Deep;

Quindo Red Gold;

Rowney Transparent Brown [DR.o]

73900+ 73920

Synthetic organic;

Oxidation of dihydroquinacridone under conditions that produce a mixed crystal phase of Quinacridone & Quinacridonequinone. The product produces a unique x-ray diffraction pattern that is different from either of the quinacridones on their own or in a mix.;

C.I.Pigment Violet 19 (C.I. 73900) and C.I.Pigment Red 206 (C.I. 73920) co-precipitated. The exact derivative has not been disclosed;

CAS 71819-75-5

Deep slightly dull golden yellowish orange;

Moderately staining w/ Moderate tinting strength

4

I (ASTM oil, acryl., NR in WC)

II (ASTM WC)*

BWS
8; 8; 8
(Guerra)

H

A

*Avoid dust

Unique hue & mixing properties, similar to some yellow ochers but is more 'golden', saturated and transparent;

Quinacridone Gold (PO49) comparisons of the original to the new mixes and other similar colors, with watercolor swatches @ In Liquid Color, Youtube Channel;
Saying goodbye to Quinacridone Gold, sad video by Denise Soden on the In Liquid Color, Youtube Channel;

This pigment is no longer being manufactured, and has mostly been replaced by mixtures. Some color producers may still have stocks of the pigment but it is getting harder to find, which is a shame as this is a beautiful golden orange brown.

The Daniel Smith oil paint seems to be discontinued in the regular size tubes, but may be still available in the large tubes? at the time of this writing (2017), no longer available (2018)

MaimeriBlu's 'Golden Lake' is PO49 discontinued, (NOTE: there are some mis-labeled tubes out there indicating the Pigment is PV49 but it is PO49)

You might still be able to find old stock at 'out of the way' art stores that don't have a big turnaround, or are going out of business,
You might be also be able to find old stock on eBay (search for Quinacridone Gold on eBay, affill. link); Make sure you are getting old stock with PO-49 as the pigment, be aware of newer mixtures, or other paints labeled Quinacridone Gold.

Guerra Paint & Pigment still has some as a pigment in water dispersions & dry powdered pigment. (as of 8/8/18)

* AMST rated II (very good) in watercolors; Most brands rated their PO-49 paints with their highest rating.
It was also rated "very good" to "excellent" in all brands tested by Bruce MacEvoy in real world tests. See PO 49 at Handprint.com

PO51

Pyranthrone Orange

C.I. Pigment Orange 51;

Paliogen® Orange [KP.p];

Paliogenorange;

Pigment Orange 51;

Pyranthrone Orange [GU]

-

Synthetic Organic;

2, 10 dichloropyranthrone derivative

Mid shade to reddish orange

3

I

BWS
8;8;8
(guerra paint)

-

-

-

PO52

Pyranthrone Orange, red shade

C.I. Pigment Orange 52;

Pigment Orange 52;

Pyranthrone Orange Red Shade

-

Synthetic Organic;

CAS 61512-62-7

Reddish orange

-

I

-

-

-

PO53

Pyranthrone Orange

C.I. Pigment Orange 53;

Pyranthrone Orange;

Pigment Orange 53

-

Synthetic Organic;

Pyranthrone

-

-

-

-

-

Chemical structure has not been disclosed

PO59

Pigment Orange 59

C.I. Pigment Orange 59;

Dinitraniline Orange;

Organic Nickel Orange [GU.pd];

Paliotol® Orange [KP.p];

Permanent Orange;

Pigment Orange 59

12075

Organic synthetic monoazo nickle complex;

Metal Complex / Azo Methine;

Light value yellowish to red orange;

fair tinting strength

3

I (NR)*

BWS
8;8;8
(Guerra);

BWS
8; 8; 8
(Kremer)

-

B**

Requires wetting agent; Withdrawn from market? Stlill avalible at Guerra & Kremer

* Not rated by the ASTM, My rating of "excellent" is based on pigment supplier blue wool scales, and anecdotal evidence. I would recommend making your own lightfastness tests.

** nickel requires a PROP 65 label in CA.

Nickel has caused respiratory problems in miners and other workers who inhale it in large amounts over years. It is very unlikely for an artist to inhale similar amounts.

Nickel can cause skin reactions and allergies in some people.

Avoid Dust & Spray;

Avoid excessive skin contact;

Do not ingest.

PO60

Benzimidazolone Orange HGL

Azo Orange;

Benzimidazolone Orange;

Cadmium Orange Tone (hue);

C.I. Pigment Orange 60;

Midazo HGL [GU.pd];

Midazo Orange HGL [GU.pd]

Pigment Orange 60

11782

Synthetic Organic;

Monoazo; Benzimidazolone;

CAS 68399-99-5

Reddish orange;

Mid. staining w/ fair tinting strength

3-4

I (ASMT oils, acryl., NR in WC)

BWS
8;8;8
(Guerra)

H

A

Used mostly in inks, industrial paints & plastics.

PO61

Isoindolol Orange

Chinese Lake [SE.o];

C.I. Pigment Orange 61;

Chromophal 2G [GU.pd.p];

Indolinone Orange [OH.a];

Irgazin® Orange L ;

Isoindoline Orange 61;

Isoindol Orange [KP.p];

Permanent Orange;

Pigment Orange 61

11265

Synthetic Organic;

Tetrachloro-isoindolinone;

CAS 40716-47-0

Reddish dark orange;

moderate tinting strength

3-4

I-II (NR)*

BWS
8; 8; 7-8
(Kremer)

BWS
8; 7; 5-6
(Guerra)

-

A

MSDS

* Not rated by the ASTM, ratings from pigment suppliers indicate very good to excellent lightfastness with some fall out in tints. Old Holland says of it's 'Indolinone Orange': "Lightfast pigment according to ASTM category 1 and 2" (it seems they say that about all their paints)

I would suggest making your own tests before trusting with permanent artwork.

PO62

Benzimidazolone Orange H5G

Azo Orange [MG.w];

Benzimida Orange [DV.a.o.w];

Benzimidazo Orange [GU.pd.p];

Benzimidazolone Orange [WN];

Brilliant Orange;

Cadmium Orange (hue);

Cadmium Orange Hue [DV];

Cadmium Orange Tone [SCH.g];

Chrome Orange (hue) [SCH.w];

Chrome Orange, no lead [SCH.w];

C.I. Pigment Orange 62;

Helio Genuine Orange [LK];

Mono Orange [GB.o];

Novoperm Orange H5G;

Orange [DV | MA.g | SCH.p];

Orange HG5;

Orange Light [SCH];

Orange Yellow [MA.a];

Permanent Orange [AS | BX.o.w | DS.o.w. | MA.w | SQ.a];

Permanent Yellow Deep [LK];

Pigment Orange 62;

Pure Orange;

Trinacria Orange [MA.o(Med)];

Winsor Orange [WN.w.wp.];

Yellow Orange [LK]

11775

Synthetic Organic;

Monoazo;

Benzimidazolone;

C₁₇H₁₃C_lN₆O₅

CAS 52846-56-7

Light yellowish to mid-orange;

Mid. staining w/ fair to adverage tinting strength

2-3*

I (ASTM 2004)**

BWS
8;7;7
(Guerra)

65-70

A

MSDS

Benzimidazolone Orange has excellent lightfastness and outstanding heat and solvent stability for a monoazo pigment (Ref: Blick Art Materials pigment info)

* The yellowish orange varieties are more transparent

** Rated Excellent (I) light fastness in tests of popular water color brands, at handprint. All except one was BWS 8; 8; see PO-62 by Bruce MacEvoy @ handprint.com

PO64

Benzimidazolone Orange

Benzimidazolone;

Benzimida Orange [DV];

C.I. Pigment Orange 64;

Cromophtal Orange GP;

Pigment Orange 64

12760

Synthetic Organic;

Monoazo; Benzimidazolone;

CAS 72102-84-2

Bright reddish orange

2

I-II

BWS
7;6 *

58

A

* BWS from offset printing ink data

PO65

Benzimidazolone Orange

Benzimidazo Orange [GU];

C.I. Pigment Orange 65;

Cojanil Red;

Golden Barok Red [OH.w];

Irgazin Orange 3GL;

Methin Nickel Scarlet;

Nickel Orange Deep [GU.pd];

Nickel Red;

Pigment Orange 65

48528

Azomethine nickel complex;

CAS 20437-10-9

Dull orange red or rich brown (described on handprint as "not unlike blood as it begins to coagulate");

Non-staining w/ good tinting strength

3-4

I-II (NR)*

BWS
8; 7; 7
(Guerra)

-

B**

* Not rated by the ASTM; Old Holland Rates their 'Golden Barok Red' as "Lightfast pigment according to ASTM category 1 and 2" (interestingly that's the same thing they say about PO34, see above)
It was rated "excellent" in watercolor with all brands tested by Bruce MacEvoy. See PO 65 at Handprint.com;

** nickel requires a PROP 65 label in CA.

Nickel can cause skin reactions and allergies in some people.

Avoid Dust & Spray;

Avoid excessive skin contact;

Do not ingest.

PO66

Irgazin Orange 3GL

C.I. Pigment Orange 66;

Irgazin orange 3GL;

Isoindoline Orange Deep [GU.pd];

Pigment Orange 66

48210

Synthetic Organic;

Diketo-pyrrolo-

pyrrole / Isoindoline

Red Orange

1-2

I (NR)

BWS
8;8;8
(Guerra);

BWS
8
(The Artists' Handbook by R.Smith, 2003)

37

A

Withdrawn from market?

PO67

Pyrazoloquinazolone Orange

Brilliant Orange [SCH.a];

C.I. Pigment Orange 67;

Chrome Orange Tone (hue) [SCH.o(Mus)];

Coral Orange [OH.o.w];

Enceprint Orange 2953;

Mono Azo Orange [GR.o];

Paliotol Orange D 2953;

Paliotol Orange L;

Paliotol® Orange L 2930 HD;

Pigment Orange 67;

Pyrazolo -

Chinazolone Orange;

Pyrazoloquinazolone Orange;

Scheveningen Red Scarlet [OH];

Sico Fast Orange L2952HD;

12915

Synthetic Organic;

azolone;

Pyrazolo quinazolone;

Quinazolo- pyrazolone;

Pyrazolo - Chinazolone Orange;

CAS 74336-59-7

Saturated red-orange;

Moderatly staining w/ average tinting strength

† Darkens, fades

1-2

II (NR)*

48

A

MSDS;

MSDS

* Not rated by the ASTM.

Rated with a marginally 'very good' (II) in a light fastness test of Old Holland 'Coral Orange' watercolor paint; by Bruce MacEvoy, see PO-67 entry @ handprint.com
Old Holland state their 'Coral Orange' is a "lightfast pigment according to ASTM category 1 and 2". I see a trend here, ... it appears Old Holland give the same rating to all their paints.

Schmincke rate their MUSSINI® oil paint 'Chrome Orange Hue' with '5 stars' equivalent to 'BWS 8' . Schmincke may be exaggerating or the pigment is more lightfast in oils, or perhaps they have a better source of the raw pigment than Old Holland does. (Ref. Schmincke MUSSINI® Oil Colour Brochure, p.6 PDF)

Grumbacher Pre-tested Oils rate 'Mono Azo Orange' as LFR 'II'.

PO68

Sandorin Orange

Azo Methine Orange [GU.pd];

C.I. Pigment Orange 68;

Pigment Orange 68;

Sandorin Orange;

486150

Nickel complex Methine;

Azo Methine Nickel Complex;

CAS 42844-93-9

Reddish orange;

3-4

I (NR)*

BWS
8; 8; 8
(Guerra)

-

B**

* Not rated by the ASTM, My rating of "excellent" is based on pigment supplier blue wool scale, and anecdotal evidence. I would recommend making your own lightfastness tests.

** nickel requires a PROP 65 label in CA.

Nickel can cause skin reactions and allergies in some people.

Avoid Dust & Spray;

Avoid excessive skin contact;

Do not ingest.

PO69

Isoindoline Orange

Cadmium Red Orange Hue;

C.I. Pigment Orange 69;

Isoindolinone Orange [GU.pd];

Naphthol red;

Paliogen Orange;

Pigment Orange 69;

Pyranthron Orange;

Pyranthrone orange;

Scarlet;

Scheveningen Orange [OH.wd]

56292

Synthetic Organic;

Isoindolinone; Pyrazoloquinazolone;

CAS 85959-60-0

Saturated red-orange;

Moderately staining w/ moderate tinting strength

† Darkens in masstone, Fades in tints

1

I-III? (NR)*

BWS
8; 7; 7
(Guerra)

-

A

MSDS

Extinct Pigment;

* Lightfastness rated poorly in watercolors by Bruce MacEvoy of Handprint.com. see PO-69 entry @ handprint.com.
only one brand (formulation) tested, other brands or mediums might be better. BWS from pigment suppliers indicate at least "very good".

Advisable to make your own tests before using for permanent artwork. The Blue wool Scale Data from (Guerra Paint & Pigment) seem to indicate excellent lightfastness.

PO71

Pyrrole Orange

Cadmium Orange Hue [LK];

C.I. Pigment Orange 71;

Cromophtal DPP Orange TR;

Irgazin DPP Orange 398;

Orange [SCH];

Permanent Orange [LK];

Pigment Orange 71;

Poppy Red [SCH.o];

Translucent Orange [SCH.a.g.o(Mus).w.];

Transparent Orange [BA.w];

Transparent Indian Orange [LB.o];

Transparent Permanent Orange [TA.a.af];

Transparent Pyrrol Orange [DS.w | GO.a.af]

561200

Synthetic Organic;

Diketopyrrolopyrrole orange;

C20-H10-N4-O2

CAS 84632-50-8

EC 276-057-2

Dull reddish to Mid-Orange;

Staining with average to good tinting strength

† Darkens in masstone slightly

2-4*

II (NR)**

BWS
7-8
(Epsilon)

BWS
7-8
(dimacolor)

55-65

A

MSDS

* Varies by manufacture

** Not rated in WC by the ASTM. Rated with 'very good' (II) light fastness in watercolor test; see PO-71 entry by Bruce MacEvoy @ handprint.com

May have better lightfastness in oils or acrylics, BWS for the pigment seem a slightly better than the watercolor test @ handprint.

PO72

Hostaprint Orange H4GL 32

C.I. Pigment Orange 72;

Hostaprint Orange H4GL 32;

Pigment Orange 72

-

Synthetic Organic;

Benzimidazolone;

CAS 78245-94-0

Brilliant orange;

moderate tinting strength

3-4

I (NR)*

BWS
8; 8; 8
(Guerra)

-

A

* Not rated by the ASTM. Pigment supplier BWS seems to indicate excellent lightfastness.

Advise to to make your own tests in the binder / medium of choice to see if it will fit your needs.

PO73

Pyrrol Orange

Aritint Orange;

Bright Orange;

Cadmium Orange Hue [BA.a | LQ.a];

C.I. Pigment Orange 73;

Cosmoray Orange*?

Da Vinci Orange [DV.w];

Dipyrrolopyrrol Orange;

Irgazin Orange;

Irgazin DPP Orange 16A;

Irgazin® DPP Orange RA;

Irgazine® Orange DPP RA [KP.p];

Matisse Orange DPP [MT];

Orange [JO.a];

Permanent Orange [MH.o | WL.o];

Permanent Vermilion (hue) [RT.o];

Pigment Orange 73;

Pyrrol Orange [DS.a.o.w | LQ.a];

Pyrrole Orange [CR | GO.a.ab.af.ao | LA.a | OH.a | TA.a. |WN.a];

Red Orange [SE.a];

Scarlet Pyrrol [MG.w];

Scheveningen Orange [OH.o];

Transparent Perinone Orange [CR.ao.o | GO.a];

Transparent Pyrrole Orange [GO.a];

Unisphere DPP Orange;

Vermillion (hue) [RT.a.o | SQ.a];

Vermillion Pyrrolo [BX.o.w];

Versal Orange RA

Warm orange [DR.w];

Winsor Orange [WN.o.w]

Winsor Orange (red shade) [WN.o.w.wp.]

561170

Synthetic Organic;

Diketo-pyrrolo-pyrrole orange;

CAS 71832-85-4

Light bright Saturated red shade orange

† May slightly fade in tints, over long periods of being exposed to direct sunlight.

2-3

I (NR)*

BWS
8; 8; 7-8
(Chroma Archival)

BWS
8; 8; 8
(BASF)

BWS
8; 8; 8
(Kremer)

45-55

A

MSDS

Excellent lightfastness and beautiful bright vermillion hue in artist paints.

BASF Technical data sheet [PDF]

* Not rated by the ASTM. Rated with 'excellent' (I) light fastness in watercolor test at handprint.com; see PO-73 entry by Bruce MacEvoy @ handprint.com. All the blue wool scales of paint and pigment suppliers seem to agree with the findings above.

*? There seems to be some crossover between this pigment and Cosmoray Orange. The pigment called Cosmoray Orange may be PO73 and just mixed with mica, the references are unclear.

PO74

Pigment Orange 74

C.I. Pigment Orange 74;

Graphtol Orange;

Pigment Orange 74

-

Synthetic Organic;

Azo;

CAS 85776-14-3

Bright reddish orange

1

II (NR)

-

A

-

PO75

Cerium Sulfide Orange

Cerium Sulfide Orange;

C.I. Pigment Orange 75;

Neolor Orange

Pigment Orange 75

77283:1

Inorganic; Cerium Sulfide;

CAS 12014-93-6

Reddish orange

-

I (NR)

20-28

-

-

PO77

Vat Orange 23

C.I. Pigment Orange 77;

Pigment Orange 77;

Vat Orange 1;

Vat Orange 23;

59105

Synthetic Organic;

Dibromo derivative of Anthanthrone;

CAS 1324-11-4

Bright yellowish orange

4

(NR)

-

-

-

PO78

Cerium Sulfide Orange

Cerium Sulfide Orange;

C.I. Pigment Orange 78;

Neolor Light Orange S;

Pigment Orange 78

77285:0

Inorganic;

Cerium Sulfide;

CAS 12014-93-6
12031- 49-1

EC 234-603-7
234-752-8

Mid-shade orange

1

I (NR)

20-28

-

-

PO79

Pigment Orange 79

C.I. Pigment Orange 79;

Engeltone Brilliant Orange;

Pigment Orange 79

-

Azo metal salt;

CAS IES 12736

Bright mid-shade orange

-

(NR)

-

A

-

PO80

Pigment Orange 80

C.I. Pigment Orange 80;

Pigment Orange 80

-

thiazine indigo

-

-

(NR)

-

-

-

PO81

IRGAZIN Orange 2038

Irgazin Orange;

Pigment Orange 81

55714

Synthetic Organic;

Diketo-pyrrolo-pyrrole

Bright reddish orange

1

I (NR)

53

A

-

Brilliant Orange;

Sicopal Orange;

Sicopal® Orange L 2430

Inorganic/organic

Sn/Zn/Ti oxide

Tin-titanium-zinc oxide

Brilliant Orange;

A

MSDS

Press Release;

BASF pigment color chart PO82 on p.4

Pigment Sicopal Orange L 2430 and K 2430 news release @ kunststoffe.de 2009

?* designed for industrial paints, light fastbess should be good

PO84

MayaCrom® Orange OR7500

C. I . Pigment Orange 84;

MayaCrom® Orange OR7500

-

Patented Organic-/Inorganic hybred based on the chemistry of Mayan Blue with a unique nano crystal lattice. Reference the Tech data sheet, and Patent application.;

Article about Hybred Pigments and Mayan Blue in New Journal of Chemistry 2005, 29 , p.57–58 (Article Reference PDF);

Bright yellow orange

-

I-II (NR)

65

A

MSDS

"evolved from work done at the University of Texas-El Paso to reconstruct the unique vibrant blue color developed by the Maya civilization more than 1000 years ago, using an inorganic and organic component to produce a highly stable hybrid pigment."

- TOR Minerals International Press release, (Ref Mayan Pigments);

C.I. Pigment Orange 85;

Lysopac Orange;

Pigment Orange 85

Synthetic Inorganic;

Bismuth Oxyhalide Orange;

Bismuth-based inorganic pigment providing a unique yellowish orange shade with high chroma and color strength (Ferro)

Bright yellowish orange;

good tinting strength

I (NR)*

BWS
7-8
(Ferro)

PO86

Bismuth Vanadate Orange

Bismuth Vanadate;

Bismuth Vanadate Orange

C.I. Pigment Orange 86;

DCC® Orange ORS;

Isoindoline Orange Light ?*

Pigment Orange 86

771635.9

Synthetic Inorganic;

Bismuth Vanadate

yellow shade orange

2-3

I? (NR)*

Low oil absorption

-

This is a relatively new pigment and the CI 86 number was only allocated in 2015, my old entry for this pigment was incorrect.

Ref. DCC Orange ORS PDF

* Should be highly light fast as it was designed for automotive use;

?* Guerra lists their "Isoindoline Orange Light" as PO86. I'm not sure if they just got the name wrong or it's a typo in the pigment number/name.