... ,3,4,5-Trihydroxybenzoic acid is A white or pale colored crystalline powder. Soluble in 85 parts of water Gallic acid ... ,3,4,5-Trihydroxybenzoic acid is A white or pale colored crystalline powder.Specification:Export products in paperboard circular kegs of ... .H2O Molecular weight: 188.13 Property: A white or pale colored crystalline powder. Soluble in 85 parts of water,6 parts ...