Description of Goods:
Calcium carbonate is an inorganic compound with the chemical formula of CaCO ₃, commonly known as limestone, limestone, stone powder, etc. Calcium carbonate is alkaline, basically insoluble in water and soluble in hydrochloric acid. It is one of the common substances on the earth. It exists in aragonite, calcite, chalk, limestone, marble, travertine and other rocks. It is also the main component of some animal bones or shells. Calcium carbonate is also an important building material, which is widely used in industry.Calcium carbonate is an inorganic compound with the chemical formula of CaCO ₃, commonly known as limestone, limestone, stone powder, etc. Calcium carbonate is alkaline, basically insoluble in water and soluble in hydrochloric acid. It is one of the common substances on the earth. It exists in aragonite, calcite, chalk, limestone, marble, travertine and other rocks. It is also the main component of some animal bones or shells. Calcium carbonate is also an important building material, which is widely used in industry.
Main Characteristic of Calcium Carbonate:
Light calcium carbonate is amorphous powder, tasteless, odorless, slightly hygroscopic, stable in dry air, acid decomposition.
Heavy calcium carbonate is white powder, odorless and tasteless, stabilize in the air, almost insoluble water.
Specification of Calcium Carbonate:
|
Item HG/ 3249.2-2008 |
|
I type
3000m |
II type
2500m |
III type
2000m |
|
|
caco3 w/%≥ |
class I |
first class |
98.0 |
96.0 |
96.0 |
|
qualified |
96.0 |
94.0 |
94.0 |
||
|
|
class II |
first class |
96.5 |
95.0 |
95.0 |
|
qualified |
95.0 |
93.0 |
93.0 |
||
|
Fineness |
D97/μm ≤ |
3.0 |
5.0 |
6.0 |
|
|
D50/μm ≤ |
1.3 |
1.6 |
2.0 |
||
|
Whiteness |
first class |
97 |
97.0 |
96.0 |
|
|
qualified |
95.5 |
95.5 |
95.0 |
||
|
Specific surface area (cm2/g) ≥ |
23000 |
19500 |
18000 |
||
|
Oil absorption(ml/100g) |
class I |
30.0 |
30.0 |
25.0 |
|
|
class II |
25.0 |
23.0 |
22.0 |
||
|
Oil absorption(ml/100g) |
first class |
95.0 |
95.0 |
95.0 |
|
|
qualified |
93.0 |
93.0 |
93.0 |
||
|
105℃ volatile/% ≤ |
0.5 |
0.5 |
0.5 |
||
|
Lead（pb）W /% ≤ |
0.001 |
0.001 |
0.001 |
||
|
(Cr6+)W/% ≤ |
0.005 |
0.005 |
0.005 |
||
|
(Hg) W/% ≤ |
0.002 |
0.002 |
0.002 |
||
|
(As) W/% ≤ |
0.002 |
0.002 |
0.002 |
||
|
(Cd) W/% ≤ |
0.002 |
0.002 |
0.002 |
||
Applications of Calcium Carbonate:
1. In rubber manufacture: Calcium carbonate was the earliest filler used in the rubber industry. It can enlarge the capacity in the rubber products, for saving the cost. It also enhance the tensile strength, abrasion and tearing strength.
2. Plastic manufacture: As the framwork in plastic products, keeping stablity of the products, strengthen the products, keeing surface smoothly. Since the calcium carbonate is hight white, it can place the expensive the white ployethylene, for whitening the plastic products.
3. Paper making: Whitening the paper, and as the fller, can reducing the pulp, for saving the cost etc.
Quality Certificate
ISO9001:2008 -Quality Management System; SGS certification; FDA certification
Package & Storage of Calcium Carbonate:
25KG bag , Light: 18 MT/20'FCL, Dense:20 MT/20'FCL
also be packed according to customer's needs.
Store closed containers in a cool, dry, well-ventilated area. Avoid exposure to direct sunlight.
