Polyaluminum chloride
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Polyaluminum chloride
Polyaluminum chloride (PAC) is an inorganic substance, a new water purification material and inorganic polymer coagulant, which is called polyaluminum for short. 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 neutrality of PAC products. N=1~5 is a highly charged polymer chain with Keggin structure, which has a high degree of electric neutralization and bridging effect on colloids and particles in water, and can strongly remove micro poisons and heavy metal ions, with stable properties. The inspection method can be tested according to the national standard GB 15892--2003. Due to the bridging effect of hydroxyl ions and the polymerization of multivalent anions, polyaluminum chloride produced is an inorganic polymer water treatment agent with relatively large molecular weight and high charge.
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