Poly aluminium chloride(PAC) Al2O3:>=28% Basicity:40-90% Water Insoluble %<=0.3% Color:yellow Polyaluminium chloride(PAC) PAC referred to as PAC, usually referred ... to as Basic aluminum chloride, or coagulant, it is ... can effectively support In addition to the water-color quality SS, COD, BOB, and arsenic, mercury and ...