Precipitated Calcium Carbonate, Technical
Chemical name: Light Calcium Carbonate
Molecular formula: CaCO3
Properties: white powder, tastless, odorless, nontoxic, light, stable in air, with slight hygroscopicity.
Use: Precipitated calcium carbonate is the most widely used organic pigment, largely used in rubber, paper, plastic, adhesive, coating, printing ink,daily neccessities, cosmetic, medicine and feedustuff.
Packing: Composite plastic woven bag; 25kg/bag.
Index Name |
HG/T2226-2000 Standard |
Quality Standard of Our Enterprise |
Best Quality |
Grade A |
Qualified |
Superfine |
Microfine |
High Quality |
| Calcium Carbonate(CaCO3)
% ≥ |
98 |
97 |
96 |
98.7 |
98.5 |
98 |
| PH value |
9-10 |
9-10.5 |
9-11 |
9.5 |
10.0 |
10.5 |
Volatile below 105°C % ≤ |
0.4 |
0.7 |
1.0 |
0.2 |
0.3 |
0.4 |
| Insoluble matter in hydrochloric acid% ≤ |
0.1 |
0.2 |
0.3 |
0.03 |
0.05 |
0.07 |
| Sediment volume ml/g ≥ |
2.8 |
2.6 |
2.4 |
3 |
2.8 |
2.5 |
| Iron (Fe)% ≤ |
0.08 |
0.10 |
0.12 |
0.01 |
0.02 |
0.03 |
| Manganese(Mn)% ≤ |
0.006 |
0.008 |
0.01 |
0.001 |
0.002 |
0.003 |
| Residue |
125μm test sieve% ≤ |
0.005 |
0.01 |
0.015 |
0.001 |
0.003 |
0.005 |
| 45μm test sieve% ≤ |
0.3 |
0.4 |
0.5 |
0.1 |
0.3 |
0.5 |
| Brightness ≥ |
90 |
90 |
-- |
96.5 |
96 |
95.5 |
| Water-soluble matter ≤ |
0.2 |
-- |
-- |
0.1 |
0.2 |
-- |
| Average grain size |
-- |
-- |
-- |
3 |
3.5 |
4 |
|
