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. inorganic violet pigment

Anotations

Scope note:

Pigment having a rosy violet color, produced in the manufacture of synthetic ultramarine blue. Ultramarine violets and reds were developed in Germany ca. 1875; they are produced by treating ultramarine blue with sal ammoniac or dry hydrochloric acid gas at high temperatures. Ultramarine violet is stable, but it has poor tinting strength and is rarely used in artists' paints.