Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]
6. colorant (material)
7. pigments
8. [pigment by color]
9. violet pigment
10. synthetic inorganic violet pigment
11. cobalt violet (pigment)

Anotations

Scope note:

A pale to medium violet pigment originally composed of cobaltous arsenate. Cobaltous arsenate occurs in nature as cobalt bloom or erythrite; it was synthetically produced in 1880 and became an important permanent, violet pigment for paints, glass, glazes, and enamels. It is now rarely used because of its toxicity, generally substituted with deep cobalt violet or cobaltous ammonium phosphate.