Purchase Qty. Reference FOB Price
25-999 kg US$12.36
1,000+ kg US$8.59
Product Description
Product Description Tannic acid Gallnut Extract Tannic acid, is an organic compound with the chemical formula C76H52O46. It is a yellow or brownish yellow powder, and its aqueous solution turns blue black when it meets an iron salt solution. In industry, tannic acid is widely used in tanning ...