Polymeric chloride aluminum of industrial level Standard, gb-t/22627-2008 Index, solid Al2o3, 29 Basicity b (%), 30-95 Density (20, )/(g/cm3), Water-insoluble matter % , 1.5 Ph value, 3.5-5.0 (fe)% , 5.0 (as)% , 0.0015 (pb)% , 0.006 Note: the mass fractions of fe, as, cd, cr, and pb are calculated based on that of al2o3 as 10.0%.