Color Swatch created using Heavy application/medium application/50% tint and was applied on Acrylic Primed Canvas (7 oz) material.
This color contains the following pigments:
PY83—Diarylide Yellow 83
Pigment Type
organic, disazo
Chemical Name
n/a
Chemical Formula
C36H32Cl4N6O8
Properties
Diarylide Yellow is a semi-opaque, moderately staining, intense deep reddish yellow pigment with good tinting strength.
Permanence
Diarylide Yellow 83 has very good lightfastness and permanence. However, it can fade in tints, so some artists do not consider it suitable as an artists’ color. Many other diarylide yellow pigments are reported to have fair to poor lightfastness, and some are completely fugitive. Diarylide Yellow 83 is reputed to be one of the most permanent of the entire group.
Toxicity
Diarylide Yellow has no significant acute hazards, and its chronic hazards have not been well studied. PCB (polychlorinated biphenyl) contamination is possible in materials produced prior to 1982.
History
Diarylide Yellow comes from a family of azo pigments called Diarylide. These yellow hued pigments were developed around 1940 and are very important in printing inks.
Alternate Names
Benzidine Yellow, Diazo Yellow.
PR177—Anthraquinone Red
Pigment Type
anthraquinone
Chemical Name
n/a
Chemical Formula
C14H8O2
Properties
Anthraquinone Red is a magenta colored pigment that is transparent and moderately intense. It tends to fade in tints and is suitable for all media.
Permanence
Anthraquinone Red has good lightfastness and permanence in its masstone, while its tint lightfastness is moderate. Overall lightfastness and permanence varies by brand.
Toxicity
Anthraquinone Red has no significant acute toxicity.
History
Anthraquinone pigments originated as textile vat dyes before being used as pigments. They became more popular with artists once it was discovered that careful preparation and grinding helped them to retain brilliance of color.
Alternate Names
Anthraquinoid Red.
