Precipitated Calcium Carbonate-Food Grade

（CaCO₃）Content w/%    ≥

98.0-100.5%

PH Value（10% suspension）  

9-10

105℃ Volatile w /%  ≤

1.0

Hydrochloric acid insoluble matter w/%  ≤

0.10

Sedimentation Volume（ml/g）    ≥

3.2

Magnesium salt and alkali metal %  ≤

0.1

（Fe₂O₃）w/%                  ≤

0.04

 (Cr)    w/%                  ≤

0.0005

 (Pb)    w/%                  ≤

0.0001

 (Hg)    w/%                  ≤

0.0002

 (Cd)    w/%                  ≤

0.0002

 (As)    w/%                  ≤

0.0003

Loss on Drying %                ≤

1.0

Fluoride   %                   ≤

0.005

Alkali Free

Conform