
What is Calcium Carbonate?
Calcium carbonate (CaCO₃) is a naturally‑occurring substance found within limestone and marine shells. As a water‑insoluble white powder or particle with a minimum purity of 98%, it enjoys wide applications in agriculture, construction and antacid products. Its CAS No. is 471‑34‑1. We offer 300g free samples of high‑purity calcium carbonate, while the buyer shall be responsible for the freight cost. Keywords: calcium carbonate
Product Parameters
|
Product |
Calcium carbonate (heavy) |
25kg/bag |
|
Items of test |
standard |
Test results |
|
Sensory index |
White or gray-white powder |
coincidence |
|
Identification test |
Pass the test |
pass |
|
Assay % |
98 |
98.1 |
|
Insolubles in hcl% |
≤0.20 |
0.06 |
|
Dissociate alkali |
Pass the test |
pass |
|
Magnesium and alkali metal % |
≤1.0 |
0.79 |
|
Loss on drying % |
≤2.0 |
0.23 |
|
Barium (mg/kg) |
≤300 |
<300 |
|
CD (mg/kg) |
≤2.0 |
<2.0 |
|
F (mg/kg) |
≤50 |
<50 |
|
AS (mg/kg) |
≤3.0 |
<3.0 |
|
Lead (mg/kg) |
≤3.0 |
<3.0 |
|
HG (mg/kg) |
≤0.5 |
<0.5 |
|
Iron |
≤0.1% |
<0.1% |
|
Heavy metals (mg/kg) |
≤20 |
<20 |
Product Application
Calcium carbonate (CaCO₃) is a versatile filler and additive. It's essential in construction (cement, aggregates), paper (coating, filler), plastics & polymers (cost reducer, reinforcement), paints (extender pigment), and agriculture (soil conditioner). Also used in pharmaceuticals (antacid, calcium supplement) and food (fortification).






Packaging and Transportation
Packing And Container Quantity
25kg / 50kg bag
•No pallet: 24 tons / 20' container
•Pallet: 1000kg/pallet, 20 tons / 20' container
1000 kg/bag
•No pallet or with pallet, 20 tons / 20' container
•Full Container Load (FCL), Less than Container Load (LCL), and bulk shipping for large, unpacked commodities









Our Team
Our foreign trade team consists of over 20 people. Each salesperson has more than five years of sales and service experience. Every year, we organize training and team-building activities to enhance professional skills and a sense of belonging, and improve the quality of service for our employees. We export to 78 countries and offer over 36 product categories. We help customers in China with one-stop purchasing and have established a good win-win cooperative relationship.

Certificate
The large-scale production of Jiuchong Chemical brings cost advantages. Our prices are usually 1% lower than the market price. All of our products have been certified by ISO/SGS.








FAQ
Q: Is it possible to customize our own packages?
A: Yes, of course. You just need to send us your drawings or design, and then you can get your own packing. Usually MOQ for OEM packing is 20 metric tons. We can also customize the shipping mark label for you.
Q: What's the delivery time?
A: Usually within 15 working days for more than 5 tons. 1-5 tons also accepted, in 7-10 working days.
Q: How to get the sample?
A: Free sample within 300g for your testing,and you can take the shipping charge. Please kindly contact sales manager for more information.
Q: How can I pay you?
A: We can receive your payment by T/T, LC etc.
Q: How do you check the goods?
A: We do the key points detection during the production process , and qualified in the previous link can be allowed to enter the next link. All of our products have been certified by ISO/SGS.
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