... 99.5% CAS No:7784-25-0 Usage:Used in water purification/Food industry Manufacture as required.lumps or powde 1 ... , submerged aquatic stains, food preservatives and additives. The chemical industry: water purification flocculants, paper sizing, coating printing and dyeing, pharmaceutical, paint ... HAIBIN ROAD 2,RIZHAO, SHANDONG, CHINA - POST CODE : 276826 Alum(good quality&hot sales)