MF: [AL2(OH)nCL6-nxH2O]m HS: 3824909990 CAS: 1327-41-9 Standard: GB15892-2003 Properties: dark brown . Usages: The product is widely used for industrial water and wastewater treatment, such as those containing radioactive substances, lead (Pb + +) chromium (Cr + + +) highly toxic heavy metals and fluoride (F) sewage. In addition, also use in precision casting, paper, leather, etc. Packing 25kg or 50kg in plastic lined woven bag If you have any demand about my products.