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:
PY184—Bismuth Yellow
Pigment Type
inorganic
Chemical Name
bismuth orthovanadate or bismuth vanadium oxide
Chemical Formula
BiVO4
Properties
Bismuth Yellow is an intense, light value, semi-opaque yellow pigment with good tinting strength.
Permanence
Bismuth Yellow has excellent lightfastness.
Toxicity
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, bronchospasms, and asthma like disease. It may cause polycythemia, red blood cell destruction and anemia, albuminuria and hematuria, gastrointestinal disorders, nervous complaints, and severe cough. However, bismuth vanadium oxide is completely insoluble in water. This limits absorption and biological activity. In waterbased paints, it must be suspended in a binder vehicle. Because of low absorption, such clinical symptons are primarily limited to cases of long-term occupational exposure.
History
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.
Alternate Names
Permanent Lemon Yellow, Vanadium Yellow.
PY154—Benzimidazolone Yellow
Pigment Type
monoazo
Chemical Name
n/a
Chemical Formula
n/a
Properties
Benzimidazolone Yellow is a pigment with dull tints and an average drying time.
Permanence
Benzimidazolone Yellow has excellent lightfastness.
Toxicity
Benzimidazolone Yellow is not considered toxic.
History
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.
Alternate Names
Benzimidazolone.
