Product Description
Guangda is a food grade calcium carbonate manufacturer in China producing light (precipitated) and heavy (natural limestone) calcium carbonate. Every batch is assayed at 98.0-100.5% CaCO3 and tested for lead, arsenic, mercury, fluoride and barium.
A versatile calcium fortifier, acidity regulator, dough conditioner, yeast food, firming agent, anti-caking agent and white colour for food surfaces, also widely used in supplements and pharmaceuticals.
Technical Specifications
| Item | GB 1886.214-2016 | USP 44 |
|---|---|---|
| Assay (dry basis) | 98.0-100.5% | 98.0-100.5% |
| Loss on drying | ≤2.0% | ≤2.0% |
| Acid-insoluble substances | ≤0.20% | ≤0.20% |
| Iron (Fe) | - | ≤0.1% |
| Heavy metals (as Pb) | - | ≤0.002% |
| Lead (Pb) | ≤3 ppm | ≤3 ppm |
| Arsenic (As) | ≤3 ppm | ≤3 ppm |
| Fluoride (as F) | ≤0.005% | ≤0.005% |
| Mercury (Hg) | ≤1.0 ppm | ≤0.5 ppm |
| Magnesium and alkali metals | ≤1.0% | ≤1.0% |
| Barium (Ba) | ≤0.030% | Complies |
| Cadmium (Cd) | ≤0.0002% | - |
| Free alkali | Passes test | - |
Typical values. The Certificate of Analysis (CoA) of each batch prevails.

Applications
- Bakery & Flour Products
- Dairy & Plant-based Milk
- Dietary Supplements
- Pharmaceuticals
Quick Answers
Do you manufacture food grade calcium carbonate in China?
Yes. We are a food grade calcium carbonate manufacturer in China supplying calcium carbonate precipitated food grade (light), calcium carbonate natural limestone food grade (heavy) and bio calcium carbonate from oyster shells, all meeting GB 1886.214 and USP.
Where can I buy bulk calcium carbonate powder food grade?
You can buy bulk calcium carbonate powder food grade directly from our Yantai factory. We supply 325, 800, 1250 and 2500 mesh grades, wholesale calcium carbonate powder in 25 kg bags or jumbo bags, with a CoA for every batch.
How do you control heavy metals?
We select low heavy-metal raw materials, use food grade stainless-steel equipment and test every batch for lead, arsenic, mercury and cadmium. Our limits meet GB, USP, FCC, EU Regulation (EU) No 231/2012 and JECFA requirements.


