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. organic black pigment
11. carbon black

Anotations

Scope note:

A form of carbon black that is created by burning coal tar, mineral oils, or another such material, to produce a rather inferior grade of carbon. As a pigment, it is brownish in color and likely to contain oily impurities.