Color Swatch created using heavy application/diluted application and was applied on cold press watercolor paper (150 lb) material.
This color contains the following pigments:
PBr25—Benzimidazolone Brown
Pigment Type
organic, monoazo benzimidazolone
Chemical Name
n/a
Chemical Formula
n/a
Properties
Benzimidazolone Brown is a transparent brown pigment that is heavily staining and dark valued but has moderately low tinting strength. According to its manufacturer Clariant, “It is a dark brown, very transparent benzimidazolone pigment with excellent light, weather, and solvent fastness properties plus high heat stability. Recommended for paste inks, solvent and water based packaging gravure, and flexographic printing inks.” Benzimidazolone Brown has been used in watercolor painting, where transparent brown colors have traditionally been mixed from other pigments.
Permanence
Benzimidazolone Brown has excellent lightfastness and weather resistance.
Toxicity
n/a
History
Benzimidazolone pigments were developed and patented by Hoechst in 1960, and have gradually come into use as artist pigments.
Alternate Names
Renol Brown, Viscofil Brown, Microdis Brown, Hostaperm Brown HFR.
PY3—Hansa Yellow 10G
Pigment Type
organic, monoazo
Chemical Name
n/a
Chemical Formula
C16H12CL2N4O2
Properties
This Hansa yellow is a transparent yellow. It has great brightness and tinting strength and its drying time ranges from average to slow.
Hansa Yellow makes more intense tints and cleaner secondaries than Cadmium Yellows, especially when mixed with other organic or modern colors like Phthalo Blue and Green. Because they are more transparent, they have great value as glazing colors.
Permanence
This Hansa Yellow has fair to good permanence, particularly in the lighter shades.
Toxicity
Hansa Yellow has no significant acute hazards, though its chronic hazards have not been well studied.
History
Hansa Yellows were first made in Germany just before WW1 from a series of synthetic dyestuffs called Pigment Yellow. They were intended to be a synthetic replacement for Cadmium Yellow.
Alternate Names
Arylamide Yellow, Arylide, Arylide Yellow, Azo, Brilliant Yellow, Monoazo, Monolite Yellow, Permanent Yellow.
