<skos:note xml:lang="en">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.</skos:note>