Discontinued due to toxicity. See the other modern cobalt violets instead. CAMEO notes that cobaltous arsenate "occurs in nature as cobalt bloom or erythrite."
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Cobalt Violet Light (Historical-obsolete)
Cobalt Arsenate
Alternate Names
Erythrite
Cobalt Bloom
Pigment Description
Resources
CAMEO Materials Database: Conservation & Art Materials Encyclopedia Online, Museum of Fine Arts Boston. (Accessed June 2025). Cobalous Arsenate https://cameo.mfa.org/wiki/Cobaltous_arsenate. Museum of Fine Arts Boston.
Stats
Toxicity
Highly Toxic
CAMEO notes that this pigment is: "Highly toxic by ingestion, inhalation, and skin contact. Not recommended for use, obsolete (other Cobalt Violets are less toxic).
Chemical Name
Cobaltous arsenate
Co₃(AsO₄)₂ - ₈H₂O
Dry Pigments listing Cobalt Arsenate
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