Superfine heavy calcium carbonate

It is white power ,insoluble in water ,dissolvable in acid and widely used in dope paint plastic rubber pottery and porcelain ,paper making and ect as the filling materials .

Specifications:

calcium carbonate (CaCO3) content . 98%
Iron content (Fe) .. 0.1%
Muriatic acid insolubles content.. 0.2%
Moisture and volatile content . 0.3%
Density (g/cm3) 2.9
Mohs hardness .. 3.0
Whiteness degree .. 94.0
Oil absorption (ml/g) . 16-25
Ph .. 8-9
Heavy metalPb%0.001
Optional Information