This color contains the following pigments:
Benzimidazolone Yellow is a pigment with dull tints and an average drying time.
Benzimidazolone Yellow has excellent lightfastness.
Benzimidazolone Yellow is not considered toxic.
The benzimidazolone group of pigments was developed and patented in 1960 by Hoechst A.G., a German chemical manufacturer that was a forerunner of the pharmaceutical company Aventis.
bismuth orthovanadate or bismuth vanadium oxide
Bismuth Yellow is an intense, light value, semi-opaque yellow pigment with good tinting strength.
Bismuth Yellow has excellent lightfastness.
Bismuth orthovanadate is harmful if swallowed. It is irritating to the eyes, respiratory system, and skin. Exposure may cause conjunctivitis, rhinitis, and reversible irritation of the respiratory tract. More severe cases may cause bronchitis, bronchospas
Bismuth orthovanadate occurs naturally in several minerals. Although it was synthesized in the 1920s, it was not developed as a commercial pigment until the 1970s.