Products Description
What is Calcium carbonate Powder?
Calcium carbonate is a chemical compound with the chemical formula CaCO3. It is a common substance found in rock in all parts of the world, and is the main component of shells of marine organisms, snails, pearls, and eggshells. Calcium carbonate is the active ingredient in agricultural lime, and is usually the principal cause of hard water. It is commonly used medicinally as a calcium supplement or as an antacid, but excessive consumption can be hazardous.

Basic information
| Test Item | Specification |
| Appearance | White powder |
| Identification | Pass A |
| CaCO3(Dry base) | 98.0% ~ 100.5% |
| Loss on drying | ≤ 2.0% |
| Acid-insoluble substance | ≤ 0.20% |
| Iron(Fe) | ≤ 0.1% |
| Magnesium and alkali salts | ≤ 1.0% |
| Barium | Pass the test |
| Limit of fluoride | ≤ 50ppm |
| Heavy metals(Pb) | ≤ 20ppm |
| Lead | ≤ 3ppm |
| Arsenic | ≤ 3ppm |
| Mercury | ≤ 0.5ppm |
Application
1. Industry and manufacturing
- Building materials:Calcium carbonate is the main raw material for cement production (accounting for about 75% of the raw materials) and is used to prepare silicate cement; it is used to produce lime (CaO) and is generated by high-temperature calcination. It is widely used in construction, steel smelting and environmental governance.
- Plastic and rubber fillers:Added as a filler to plastics (such as PVC, polypropylene) and rubber to improve the hardness, dimensional stability and cost of products; ultrafine calcium carbonate (nanoscale) can improve the surface gloss and mechanical properties of materials.
- Papermaking industry:Used as paper filler and coating pigment to improve paper whiteness, smoothness and opacity, commonly found in printing paper, coated paper, etc.
2. Pharmaceutical and food industry
- Pharmaceutical field:As a calcium supplement, it is used to prevent and treat osteoporosis; antacids that neutralize gastric acid relieve indigestion and stomach pain.
- Food additives:Used as a nutritional enhancer, adding Calcium carbonate to flour, beverages, and dairy products; as a leavening agent, anti-caking agent, or acidity regulator, used in food processing such as biscuits and candies.
3. Daily chemicals and environmental protection
- Daily chemicals:Abrasives in toothpaste help clean teeth and provide abrasiveness; fillers in cosmetics improve powder texture and adhesion.
- Environmental protection and water treatment:Used in industrial wastewater treatment, neutralizing acidic wastewater or precipitating heavy metal ions; as an absorbent in the flue gas desulfurization (FGD) process, removing sulfur dioxide (SO₂) from coal-fired flue gas and reducing acid rain pollution.
Safety Information
- Calcium carbonate is an inorganic compound with low toxicity, but may cause irritation to humans if ingested in large quantities or if dust is inhaled.
- Avoid direct contact with skin and eyes as the substance can cause irritation and dryness.
- During use, appropriate personal protective equipment such as gloves and goggles should be worn to prevent contact and inhalation.
- During storage and use, maintain a well-ventilated environment to avoid dust accumulation and contact with ignition sources.

Packaging & Delivery
Packaging: 25kg fiber drum with PE inner liner or customized packaging available.
Delivery Time: 7-10 days after payment confirmation.
Shipping Methods: By sea, air, or courier (FedEx, DHL, UPS, TNT).
Company Profile

Gneebio is an enterprise specializing in the research and development, production and sales of chemicals. Our factory was established in 2016 and is located in Henan Province, covering an area of 3,600 square meters. Our team consists of more than 200 people. Over the years, the entire team has continued to improve to meet the actual needs of customers and has now become one of the leading chemical product exporters in Henan Province, China.
Our hot-selling products include aromatic hydrocarbons (Naphtha (petroleum), Benzene, Toluene, o-Xylene, Styrene, Cyclohexane, Cyclohexanone, Epsilon-Caprolactam, 2-Anilinoethanol, etc.), alcohols (Ethylene Glycol, 1-Butanol, 2-Methyl-1-Propanol, Ethyl Alcohol, etc.), phenols and ketones (Phenol, Propafenone, Bisphenol A, Phenyl Methacrylate, Methyl Isobutyl Ketone, Phenolic Resin, etc.), and petrochemicals. We hope to establish long-term and mutually beneficial cooperation with more friends in the future and provide the best products and services for our customers.
Please contact us if you need any.

FAQ
1.Are you manufacturers?
A:Yes, we are professional manufacturers in Henan, china since 2016. Welcome to visit our factory for long-termcooperations.
2. How do you ensure your product and service quality?
A:All of our processes strictly adhere to is0 9001 procedures and we are equipped with state of the art quality controlfacilities.
3. Can I print my logo?
A: Yes, OEM/ODM service is available. Customized logo/package/name/color. For details, Please kindly contact the sales persons.
4. How to place order online?
A: Proforma invoice will be sent after confirmation from the client along with our bank details.
5. Can you send free samples?
A:Yes, we can send free samples for most products, Please feel free to send inquiry for specific requests.
6. Do you offer technical supports for the products?
A:Yes, we have a professional technical support team and can provide unique technical solutions to our clients.
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