... ) Used for drinking water treatment and wastewater treatment 3) Appearance: Light yellow powder 4) Al2O3: 30% (min. ) 5) Basicity: 50.0% ~ 85.0 ... many kinds of water treatment chemicals, such as boric acid powder, poly aluminium chloride (PAC), polyscrylamide (PAM) , basic aluminium chloride, polyaluminium ...