Min. Order Reference FOB Price
1 kg US$18.00-30.00 / kg
Product Description
Tannic acid is an organic compound with a chemical formula of C76H52O46. It is yellow or brownish-yellow powder. When its aqueous solution meets iron salt solution, it turns blue-black. Adding sodium sulfite can delay the discoloration. In industry, tannic acid is widely used in tanning leather and ...