Superfine Calcium Carbonate, Technical
Chemical name: Superfine Light Calcium Carbonate
Molecular formula: CaCO3
Properties: Light calcium carbonate of suferfine grains, white, odorless, tasteless, with big specific surface area.
Use: It can be used as body pigment and filler in printing ink to control rheological characteristic and heighten viscosity; used as filler in plastics to improve the flexural resistance of soft polyethylene products; and also used as filler and reinforcing agent in rubber, adhesive and sealant; and is more and more widely used in alkaline (neutral) paper making.
Packing: Composite plastic woven bag; 25kg/bag.
Index Name |
Grade A |
Qualified |
Quality Standard of Our Enterprise |
Superfine |
Microfine |
| Calcium oxide (CaO)% ≥ |
54.3 |
53.8 |
58.5 |
57.5 |
| Magnesium oxide (MgO)% ≤ |
0.8 |
1.0 |
0.5 |
0.7 |
| PH value |
8.5-10 |
9 |
9.5 |
| Volatile below 105°C % ≤ |
0.7 |
1.0 |
0.3 |
0.5 |
| Insoluble matter in hydrochloric acid% ≤ |
0.2 |
0.3 |
0.03 |
0.05 |
| Iron (Fe)% ≤ |
0.10 |
1.10 |
0.01 |
0.02 |
| Average grain size μm ≤ |
0.2-0.5 |
0.2 |
0.3 |
| Specific surface aream2/g ≥ |
8-10 |
10 |
8 |
| Density g/cm3 |
2.55-2.65 |
2.55 |
2.6 |
| Brightness% ≥ |
90 |
-- |
95.5 |
95 |
|
