Tannic acid 1)Strict quality contral and best price. 2)be exported to more than 50 countries. 3) On time service 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 ...