... 99.8%. Pyrogallic Acid ACS Pyrogallol A.R. Grade 99.8% Synonyms:Pyrogallic Acid; 1,2,3-Trihydroxybenzene; ... .Packing:In fiber drum with light resistant inner bag , 25kg net each.Storage Recommendations:Keep in tight, light resistant containerShelf life ... :12 months in unopened container. 100kg Pyrogallol A.R. Grade 99.8%, Pyrogallic Acid, 1,2,3-Trihydroxybenzene; 1 ...