PAC (Polyaluminium Chloride) referred to as the PAC. Often referred to as alkaline or coagulant such as aluminum chloride, which is between ALCL3 and AL (OH) 3 between a water-soluble inorganic polymers, the chemical formula is [AL2 (OH) NCL6- NLm] representative of the extent of polymerization in which m, n that the neutral level of PAC products. The color yellow or light yellow, dark brown, dark gray resin-like solid. The product has a strong bridge adsorption properties, in the hydrolysis process, with the condensate, and other physical and chemical adsorption and precipitation processes. 
 Nature: 
 Alias poly aluminum, polymeric aluminum, molecular formula [Al2 (OH) 2O] m or [Al2 (OH) nCl6-n] m, (m ≤ 10; n ≤ 5), is a new highly efficient inorganic polymer flocculants , its solution is between aluminum chloride and aluminum hydroxide hydrolyzate between, with the colloid charge, suspended solids in water has a very strong absorption, so as to achieve the purpose of suspended solids in the water pool. 
 Uses: 
 Used in metallurgy, electric power, leather, pharmaceutical, printing and dyeing, paper making, chemical and other waste water treatment industries. 
 Features: 
 The formation of flocs coagulation effect (also known as alum) that fast and big, heavy particles, the settlement quickly. PH value of the applicable range of 5 to 9, with less dosage, low cost, high activity, easy operation, adaptability, corrosion, filter, and can improve equipment utilization, chemically stable at room temperature, long storage is not bad, solid bare easy to absorb moisture, but not bad, non-toxic and so on.