Gallic acid: Difference between revisions
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*[http://www.henriettesherbal.com/eclectic/kings/acidum-gall.html King's American Dispensatory (1898) entry on Gallic acid] |
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Revision as of 13:56, 13 December 2005
Gallic acid is an organic acid, also known as 3,4,5-trihydroxybenzoic acid, found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plants. The chemical formula is C6H2(OH)3CO2H. Gallic acid is found both free and as part of tannins.it is commonly used in the pharmaceutical industry
The COOH group has a pKa of 4.5, and the phenolic OHs have pKa of 10.
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