Al2O3:28% Basicity:30-95 Insoublel Substance:1.5 PH ... usage.Specifications ItemIndexLiquidSolidDensity (20°C) (g/cm3) ≥1.10-Al2O3 ,% ≥6.028.0Basicity,%30.0-95.0Insoluble substance,% ≤0. ... mass fractions of Insoluble substance,Fe,As and Pbare calculated based on that of Al2O3 as 10.0%,When the ... concentration of Al2O3 is not 10.0%, the standard ...