Specification:

content 93%-98%,pale yellow powder,loss on drying ≤9%,residue on ignition ≤1%,heavy metal ≤20ppm. Shelf life: 2 years. Packing: 25kg/drum or kraft paper bag, can be adjusted as per the specific requirement from customer.

Formula:

(1)Widely used in extraction of germanium, ferric acid ink manufacturing, metal rustprevention and oil drilling mud treatment agent. it can be used in producing Gallic Acid andPyrogallol, also used in producing leather tanning agent, mordant, rubber coagulant.protein agent, alkaloid precipitator.(2)Pharmaceutical Grade Tannic Acid has function of antibacterial, dezymotize andconvergence,it can be used in antibiotics, ringworm treatment, detoxifcation, diarrheaand other pharmaceutical preparations, also used in the synthesis of sulfanilamidesynergistic agent.
(3)Used in cosmetics, food antioxidants, clarifiers for low concentration alcohol, oilantioxidants,and pineapple proteinase food processing.