Gallic acidGallic acid (also known as 3,4,5-trihydroxybenzoic acid) is a trihydroxybenzoic acid with the formula C6H2(OH)3CO2H. It is classified as a phenolic acid. It is found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plants. Read from the Chembox of the Wikipedia article Gallic acid, revision 1367976790.

Property

Value

Formula

C7H6O5, 170.12 g/mol

Melting point

260 °C

Density

1.694 g/cm³

log P, measured

0.7

pKa

4.5

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