Pyrogallol A.R. Grade 99.8%. Pyrogallic Acid ACS Pyrogallol A.R. Grade 99.8% Synonyms:Pyrogallic Acid; 1,2,3- ... for oxygen absorption in gas analysis, photo developing agent, pharmaceutical intermediate, pesticide (Bendiocarb), insecticide, heat sensitizer and polymerization ... 12 months in unopened container. 100kg Pyrogallol A.R. Grade 99.8%, Pyrogallic Acid, 1,2,3-Trihydroxybenzene; 1, ...