Synonym: pyrogallic acid Chemical name: 1,2,3-trihydroxybenzene Molecular formula and weight: C6H6O3=126.11 CAS: 87-66-1 Description: White lustrous crystalline powder, soluble in 2 parts of water, 1 part of ethanol and 2 parts of ethyl ether. Specification: Conforming to USA"Standard of Chemical Reagent" of Rosen V Edition and Japanese National Standard of K8780 Reagent Specification. Main specifications: Analytical reagent A.R Item standard Melting point,℃ 131.5～134 Solubility In conformity Ignition residue，%≤ 0.025 Chloride(Cl),%≤ 0.001 Sulfates(SO4),%≤ 0.010 Chemical reagent C.P Item standard Melting point,℃ 131～135 Solubility In conformity Ignition residue，%≤ 0.05 Chloride(Cl),%≤ 0.002 Sulfates(SO4),%≤ 0.010 Industrial grade Item standard Melting point,℃ 130～136 Ignition residue，%≤ 0.1 Water insoluble，%≤ 0.1 Application: As chemical reagents, used in such industries as pharmaceuticals, dyes, chemicals. And also used as photographic developer. Packaging: In glass bottles of 100gs net each. Outside package is paperboard case of 25×100g net each. In woven plastic bag of 25kg net each as industrial products.