[English name] Polyaluminium Chloride, the abbreviation is a PAC(the brief name gather aluminum, alkali type chlorination aluminum, flocculant , PAC) [Molecular formula] [AL2(OH)LnCL6-n]m [Technique standard] GB15892-2003 [Product property] polyaluminum choloride(the alkali type chlorination aluminum) brief name PAC is a new type inorganic polymer coagulant.It is lie in the AlCl3 and Al(OH)3 of outcome. [Main characteristics] That product and other coagulant to compare, having a following advantage: 1, application is wide, adapting water extensively. 2, don't need to add an alkalescence to help, if meet to deliquesce, its result is constant. 3, become a big alum flower easily and quickly, precipitate function like.