mf: [al2(oh)ncl6-n•xh2o]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