... . Grade 99.8%. Pyrogallic Acid ACS Pyrogallol A.R. Grade 99.8% Synonyms:Pyrogallic Acid; 1,2,3 ... ,2,3-BenzenetriolMolecular Formula:C6H3(OH)3CAS#87-66-1EINECS:201-762-9Molecular Weight:126.11Specifications:ItemUnitRequirementAppearance White Crystalline PowderWater Solution ... resistant containerShelf life:12 months in unopened container. 100kg Pyrogallol A.R. Grade 99.8%, Pyrogallic Acid, 1,2,3- ...