Pyrogallol tannin
Revision as of 06:13, 24 July 2013 by (username removed)
Description
One of two general classes of vegetable tannins. The other class is catechol. Pyrogallol tannins contain pyrogallic acid. Examples include chestnut, oak bark, myrobalan extract, and divi-divi.
Authority
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 797