3.) The Color Index, Third edition (published by the Colour Index International, 1997); 4.) Historical books on pigments, oil painting, watercolor painting and other art forms (see Free Art e-Books); 5.) Artist manuals and handbooks (see the bottom of the Pigment Database's main page for a complete list of reference works); 6.) Various dictionaries and encyclopedias (both historic and contemporary).
*]; Cadmium litho Orange Dark [GU]; Cadmium litho Orange Light [GU]; Cadmium litho Orange Medium [GU]; Cadmium Orange (hue) [DB.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. The information on the Blick Art site, Grumbacher Cadmium are indicated to be cadmium barium pigments but are given the CI name of pure cadmium colors. In the following pigment info the for pre-tested oil paint they they indicate the cadmium yellows with correct cadmium barium names, but the the reds and oranges are all designate as PO-40 instead of PO-40:1allthough the literature states, it to a cadmium barium pigment.
2 Deep (hue) [KP.p]; Cadmium Red Medium (hue) [GR.o? * It seems the Grumbacher website no longer shows pigment color index names.
Annatto- A natural orange dye obtained from the lipstick plant which is a small tree, 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 658-09-9 Azo Orange; C. according to historic pigment books & references, paint sales literature, and pigment manufacturers references.
The information on the Blick Art site, Grumbacher Cadmium are indicated to be cadmium barium pigments but are given the CI name of pure cadmium colors. In the following pigment info the for pre-tested oil paint they they indicate the cadmium yellows with correct cadmium barium names, but the the reds and oranges are all designate as PO-40 instead of PO-40:1allthough the literature states, it to a cadmium barium pigment. Light fastness may be better in the redder, more opaque grades (Ref at Paint & Coatings Industry Magazine, article * 1st set of BWS from Alkyd paint, 2nd set from offset ink, at Lansco pigment Data.
I have included references designated with "(Ref)" where further information can be attained.
Adulterants, extenders and other additives may be added to artistic paints to improve the paint rheology, transparency, and\or drying time.
Also because of language differences, changes in the paint or pigments common identification because of contemporary usage (often perpetrated by manufacturer's incorrect color marketing names), and last but not least - the sheer multitude of historically used paint names for any given paint\pigment, it's nearly impossible to prove or say a manufacturer of art materials is being purposely deceptive.
Key Top ^ Page Top^ These are the chemical constitution numbers given that pigment by the Color Index International published by the Society of Dyers and Colourists and the American Association of Textile Chemists and Colorists, and are also used by the ASTM International, American Society for Testing and Materials.
Very often a pigment can be a group of related compounds rather than one specific chemical.
I have not included detailed chemical descriptions or analyses, but only basic information that should help you to find further information.
NOTE: Patented Organic-Inorganic hybred based on the chemistry of Mayan Blue with a unique nano crystal lattice. The Blue wool Scale Data from (guerra paint) seem to indicate excellent lightfastness. |WN.a]; Red Orange [SE.a]; Scarlet Pyrrol [MG.w]; Scheveningen Orange [OH.o]; Transparent Perinone Orange [o | GO.a]; Transparent Pyrrole Orange [GO.a]; Unisphere DPP Orange; Vermillion (hue) [RT.a.o | SQ.a]; Vermillion Pyrrolo [BX.o.w]; Warm orange [DR.w]; Winsor Orange [WN.o.w] Winsor Orange (red shade) [WN.o.]Patented Organic-/Inorganic hybred based on the chemistry of Mayan Blue with a unique nano crystal lattice.