Poly Aluminium Chloride is chemically composed of polymeric aluminium species generally represented by the formula Aln(OH)mCl(3n-m), with variable degrees of polymerisation affecting performance. It appears as a yellowish free-flowing powder with high solubility in water, which enables rapid dissolution and immediate availability of active aluminium species for coagulation. During water treatment, PAC acts by charge neutralization, destabilizing colloidal particles and allowing them to collide and aggregate into larger flocs. This process significantly improves the removal of suspended solids, bacteria, and organic matter.
The medium basicity of PAC reflects the ratio of hydroxyl to chloride ions, influencing both floc size and settling velocity. Its polymeric nature provides higher molecular weight aluminium species compared to traditional coagulants, yielding stronger flocs that resist shear forces common in industrial mixing. Because of this, PAC often requires lower dosages to achieve equivalent or better clarity, translating into economic savings and reduced sludge volumes.
Its corrosion resistance and wider pH operating range (typically between 5 and 8.5) also make PAC preferable in various industrial water treatment contexts, including those in the oil and gas sectors. Procurement professionals prioritize technical consistency, packaging integrity, and on-time delivery when sourcing PAC for demanding applications. Zenco Systems Ltd supplies Poly Aluminium Chloride with documented quality, ensuring that technical performance matches operational requirements across Kenya, Uganda, Tanzania, Rwanda, and surrounding regions.