Tannic Acid Food Grade 92%. It is extracted from Chinese Gallnuts (Galla Chinensis). Stabilizer for beer, wine, beverage. Tannic Acid Food Grade 92% 100kg Tannic Acid Food Grade 92%, Tannin, Gallotannin, Gallotannic Acid, CAS 1401-55-4, EINECS 215-753-2