... effect. Heavy& Ground CaCo3 1.Product Introduction:Natural heavy calcium carbonate selects natural,snow-white calcite as raw material, ... SpecificationItemNatural Heavy Calcium CarbonateSN-1063CaCO3 content (Dry basis), % ≥94PH(10% Soliquit)8-10105°C Volatitle, % ≤0.3Insoluble substance in hydrochloric acid, % ≤ ... ,paint,building material,etc. Mesh 600 Natural Heavy Calcium Carbonate in rubber industry