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. [colorant for dye and pigment]

Additional parents:

1. top of the aat hierarchies
2. Materials Facet
3. Materials
4. materials
5. materials by function
6. colorant
7. dye
8. dye by composition or origin
9. synthetic dye

Anotations

Scope note:

A red colorant extracted along with purpurin from the roots of the madder plant; it is one of ten distinct isomers of dihydroxy anthraquinone. It has been used as a dye and pigment since ancient times. The colorant was first isolated in 1862 by Colin and Robiquet in France; For the synthetic colorant first produced in 1869, use "synthetic alizarin."