Product Description
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 .
item
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 metal（Pb）%≤…………………………………………0.001
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