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Revision as of 08:43, 24 May 2022 by MDerrick (talk | contribs) (→Physical and Chemical Properties)
The principal yellow colorant in the extracts from the leaves and twigs of Gambier, Cutch and Kino resin. Catechin is a lightfast and washfast color that is used on wool, silk and cotton to obtain a dark brown color. It is used for tanning leather. Catechin is sometimes called by the ambiguous name of catechol, a term that is also used for pyrocatechol.
Synonyms and Related Terms
catechinic acid; catechuic acid; catechol (flavan); catecol (Esp.); catechina (It.); catequina (Port.)
Physical and Chemical Properties
- Soluble in water, ethanol, acetic acid, acetone. Insoluble in benzene, chloroform, ligroin.
- Needle crystals from ethanol.
|Melting Point||93-96 C|
|Molecular Weight||mol. wt. = 290.27|