CaCO3 content %
≥ 98
PH value
9.0~10.5
Volatiles content at 105°C %
≤ 0.5
Hcl insolubles %
≤ 0.10
Sedimentation volume ml/g
≥ 2.8
Fe%
≤ 0.04
Mn%
≤ 0.004
Residue on sieve 125um%
≤ 0.001
Residue on sieve 45um%
≤ 0.01
Whiteness
≥ 96