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Industrial precipitated calcium carbonate
Our company's industrial precipitated calcium carbonate(light calcium carbonate) is produced according to HG/T2226-2000 standard. The specifications are as the following:
Item |
Index
|
|
National industrial standard |
Enterprise standard |
|
Calcium carbonate(CaCO3) (based on dry basis) % ≥ |
97.0 |
98.0 |
PH value(10% suspension) |
9.0-10.5 |
9.0-10.0 |
Volatile matter below 105°C% ≤ |
0.70 |
0.20 |
Insoluble substance in hydrochloric acid % ≤ |
0.20 |
0.20 |
Settling volume ml/g ≥ |
2.6 |
2.6-3.0 |
Iron(Fe) % ≤ |
0.10 |
0.10 |
Manganese(Mn) % ≤ |
0.008 |
0.008 |
Residue on sieve: 125µm test sieve% ≤ 45µm test sieve% ≤ |
0.010 0.40 |
0.010 0.15 |
Whiteness.drgess ≥ |
90.0 |
94.0 |
Water-soluble substance % ≤ |
0.2 |