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. black pigment
10. synthetic inorganic black pigment

Anotations

Scope note:

Synthetically prepared black iron oxide pigment that is permanent, having a warm brownish black color, existing as a dense, heavy powder, and unlike most naturally produced black iron oxide pigments, it is magnetic. Mars black was developed in the early 20th century; it is used in oil paints, watercolors, and mortars and cements, because it does not effloresce.