... 5% CAS No:7784-25-0 Usage:Used in water purification/Food industry Manufacture as required.lumps or powde ... Shibuya, have convergence, soluble in water, vulnerable to hot, Easy to lose the crystal water and become a white powder.2 ... aquatic stains, food preservatives and additives. The chemical industry: water purification flocculants, paper sizing, coating printing and dyeing, pharmaceutical, ...