Polyaluminium Chloride (PAC) is an inorganic coagulant that plays an important role in the removal of impurities and suspended solids from water through the formation of flocs. This chemical compound aids in the removal of suspended solids, colloidal particles, and organic contaminants from water sources.

PAC forms robust flocs, facilitating their sedimentation and filtration, thereby improving water clarity and quality. Its application spans across various water treatment applications, including potable water production, wastewater treatment, and industrial processes.