Ammonium alum 99.5% CAS No:7784-25-0 Usage:Used ... No., 7784-25-0 EINECS NO., 233-055-3 Appearance: White crystalline double sulphate of aluminium.Colorless, transparent, massive or crystalline ... hot, Easy to lose the crystal water and become a white powder.2.Usage: The food industry: food fermentation,processing, ... HAIBIN ROAD 2,RIZHAO, SHANDONG, CHINA - POST CODE : 276826 Alum(good quality&hot sales)