Polyaluminum chloride (PAC) is an inorganic substance, a new water purification material, inorganic polymer coagulant, referred to as polyaluminum. It is a water-soluble inorganic polymer between AlCl3 and Al(OH)3. The general chemical formula is [Al2(OH)nCl6-n]m, where m represents the degree of polymerization, and n represents the PAC product. Neutrality.
