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. dye
8. [dye by composition or origin]
9. natural dye
10. vegetable dye

Anotations

Scope note:

A vegetable dye created from extract from the bark of chestnut trees, having a dark color that was used as a dye in 19th century Italy and southern France to make an inexpensive fast blackish dye for silk. Tannin of the chestnut bark produces a firm, heavy leather with a pale, reddish color. Chestnut extract is usually mixed with other tannins, such as quebracho, mimosa, or myrobalans.