... R. Grade 99.8% Synonyms:Pyrogallic Acid; 1,2,3-Trihydroxybenzene; 1,2,3-BenzenetriolMolecular Formula:C6H3(OH)3CAS#87 ... -66-1EINECS:201-762-9Molecular Weight:126.11Specifications:ItemUnitRequirementAppearance White Crystalline PowderWater Solution ... Grade 99.8%, Pyrogallic Acid, 1,2,3-Trihydroxybenzene; 1,2,3-Benzenetriol; CAS 87-66-1 EINECS 201-762-9