... R. Grade 99.8% Synonyms:Pyrogallic Acid; 1,2,3-Trihydroxybenzene; 1,2,3-BenzenetriolMolecular Formula:C6H3(OH)3CAS#87-66-1EINECS: ... minMelting PointoC131 - 135Moisture%0.5 maxHeavy Metalsppm5 maxFe%0.001 maxResidue On Ignition%0.02 maxSulfate%0.005 maxChloride%0.001 max Application: ... Pyrogallol A.R. Grade 99.8%, Pyrogallic Acid, 1,2,3-Trihydroxybenzene; 1,2,3-Benzenetriol; CAS 87-66-1 EINECS 201-762-9