... 2.CAS No.: 1327-41-9 3.Appearance: dark yellow powder Polyaluminium Chloride for drinking waterPurity: 30% ... 110Max. water insoluble substance %1.5pH value(1% aqueous solution)3.5-5.0SO2- %, ≤3.0Ammoniacal nitrogen %, ≤ ... variety of uses. 1, purified drinking water, sewage; 2, industrial water purification, industrial wastewater, mining ... use; New resource polyaluminium chloride PAC for water treatment