Specification: 20%-25% Appearance: Dark violet powders CAS No.: 1492-18-8 Pharmacology Action: Mainly used to relieve diarrhea, and for the treatment of number of ailments including atherosclerosis, cataracts, diabetes, diarrhea, macular degeneration, night blindness, and retinopathy, and is considered as a strong antioxidant. Package: 25kg drum.