PRODUCT DATA CaCO3 : 99% Min Whiteness : 99% Min Moisture :0.5% max Water Absorption: 72g/100g DOP Absorption: 95g/100g HCl insoluble : 0.03% PH : 8.9 Tapped density: 0.25-0.26g/cm3 Residue on 325 mesh sieve: 0.07% D50: 1.6+-0.2 microns D97: 8+-1 microns