... Pyrogallol A.R. Grade 99.8% Synonyms:Pyrogallic Acid; 1,2,3-Trihydroxybenzene; 1,2,3-BenzenetriolMolecular Formula:C6H3(OH)3CAS#87-66-1EINECS ... .001 max Application:It is used in hair dying, dying of suturing materials and for oxygen absorption in gas analysis, photo ... . 100kg Pyrogallol A.R. Grade 99.8%, Pyrogallic Acid, 1,2,3-Trihydroxybenzene; 1,2,3-Benzenetriol; CAS 87-66-1 EINECS 201-762-9