Tannic Acid/Tannin

Synonms : Tannic acid, Tannin, Gallotannic acid Molecular Formula: C76H52O46 Molecular Weight: 1701.18 Application: This product is widely used in smelting if germanium ,manufacuture of Iron ink metal corrosion-resistance,claricant of beer or wine,slime treatment of petroleum drilling and raw material of pharmaceutical industry Storage :Tannic acid should be kept in well-closed container Package: 25kg packed in Polywoven Bags. Main technical index :Item Industrial grade Grade for dye Food grade Assay≥ 81.0% 82.0% 92.0% 94.0% 97.0% Insoluble matter≤ 0.6% 0.15% 0.1% Drying loss≤ 9.0% 9.0% 9.0% Color of solution≤ 2.0% 1.2 1.2% Residue on ignitin≤1.0% As≤3PPm Pb≤10 PPm Heavy metals(Pb) ≤20 PPm Gums or DextrinePasses test Gallic acid≤ 7%