Polyaluminum Chloride (PAC) | GEO Specialty Chemicals
The lowest basicity commercial PAC's are about 10%; most PAC's are in the medium to high basicity range (50-70%). At the top of the scale is aluminum chlorhydrate (ACH): at 83%, it is the highest stable basicity PAC available. (ACH is simply a special species of PAC - more about ACH in the next section).
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