| Customization: | Available |
|---|---|
| CAS No.: | 546-93-0 |
| Formula: | Mgco3 |
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Magnesium Carbonate Product Introduction
Product Overview
Magnesium Carbonate (chemical formula: MgCO3) is a white, odorless, and non-toxic inorganic compound widely used in industrial, food, and sports applications. It naturally occurs as the mineral magnesite and is also manufactured synthetically for various commercial uses. Known for its excellent moisture-absorbing properties, thermal stability, and chemical inertness, magnesium carbonate is a versatile material valued across many sectors.
Chemical Properties
Chemical Formula: MgCO3
Molecular Weight: 84.31 g/mol
Appearance: White powder
Solubility: Practically insoluble in water; soluble in acids with effervescence
pH (saturated solution): Approximately 9.5-10.5
Decomposition Temperature: >350°C (decomposes to MgO and CO2)
| Property | Specification |
|---|---|
| Appearance | White powder |
| Assay (as MgCO3) | ≥ 40% (varies by grade) |
| Magnesium Content (Mg) | ≥ 28% |
| Loss on Ignition (at 800°C) | 52-58% |
| pH (10% suspension in water) | 9.5 - 10.5 |
| Moisture | ≤ 2.0% |
| Heavy Metals (Pb, As, etc.) | ≤ 10 ppm (food/pharma grade) |
| Solubility | Insoluble in water, soluble in acids |
| Particle Size (D50) | 2-20 µm (customizable) |
| Bulk Density | 0.2 - 0.4 g/cm³ |
| Whiteness (ISO) | ≥ 90% |
| Chloride (as Cl-) | ≤ 0.1% |
| Sulfate (as SO4²-) | ≤ 0.3% |
| Iron (Fe) | ≤ 0.02% |
Grades and Specifications
Magnesium carbonate is available in various grades depending on its intended use:
Industrial Grade: Used in rubber, plastics, ceramics, and coatings
P-h-a-rmaceutical Grade: Complies with USP/BP standards for use in medicine and dietary supplements
Food Grade: Approved as a food additive (E504), often used as an anti-caking agent
Sports Grade: Specially processed for use as chalk in climbing, gymnastics, and weightlifting
Applications
P-h-a-rmaceuticals & Health Supplements
Magnesium carbonate is used as an antacid to relieve symptoms of indigestion and heartburn. It is also a magnesium supplement in tablet or capsule form, providing an essential mineral that supports muscle and nerve function, bone health, and energy production.
Food Industry
In the food industry, magnesium carbonate serves as an acidity regulator, anti-caking agent, and color retention agent. It is commonly used in powdered spices, flour, salt, and confectionery to prevent clumping and improve flow properties. Its approval as a food additive under E number E504 ensures its safety and effectiveness.
Sports and Athletics
Widely recognized as "gym chalk," magnesium carbonate is used by athletes to keep their hands dry and improve grip. It is essential in gymnastics, rock climbing, weightlifting, pole dancing, and CrossFit. Its high absorbency helps reduce moisture, minimizing the risk of slipping during performance.
Rubber and Plastics Industry
Magnesium carbonate acts as a filler, smoke suppressant, and reinforcing agent in rubber and plastic manufacturing. It improves thermal stability, enhances flame retardancy, and reduces the cost of production. Its use in flame-retardant formulations helps meet safety standards in electrical and construction materials.
Ceramics and Glass Manufacturing
In ceramics, magnesium carbonate is used as a fluxing agent that helps lower the melting point of the raw materials, improving processing efficiency. It also contributes to the glaze formulation in porcelain and earthenware. In glass production, it enhances clarity and reduces viscosity at high temperatures.
Cosmetics and Personal Care Products
Due to its absorbent and mattifying properties, magnesium carbonate is included in face powders, makeup products, and toothpaste. It acts as a bulking agent and a pH buffer, contributing to product texture and performance.
Chemical Intermediates and Laboratory Use
Magnesium carbonate serves as a precursor in the production of magnesium oxide (MgO) by thermal decomposition. It is also used in laboratory settings as a drying agent, buffer component, and analytical reagent.
Packaging and Storage
Magnesium carbonate is typically supplied in:
25 kg plastic woven bags with inner PE liners
500 kg and 1000 kg jumbo bags
Customized packaging available upon request
Storage should be in a cool, dry, and well-ventilated place, away from moisture and incompatible substances such as acids. The product should be kept tightly sealed to avoid clumping or degradation over time.
Safety and Handling
Magnesium carbonate is classified as non-hazardous and safe for general handling. However, prolonged inhalation of fine dust may cause mild respiratory irritation. Protective equipment such as gloves, safety goggles, and dust masks is recommended during handling and processing. Always refer to the Safety Data Sheet (SDS) for detailed guidelines.
Environmental Impact
Magnesium carbonate is environmentally benign and does not pose significant risk to air, water, or soil when handled and disposed of properly. It is non-toxic to aquatic life and is considered a sustainable option in various industrial applications.
Quality Assurance
Our magnesium carbonate products undergo strict quality control measures, including testing for purity, particle size, moisture content, and heavy metal contamination. We adhere to international standards such as ISO 9001 and GMP where applicable, ensuring reliable and consistent performance for our customers.
Conclusion
Magnesium carbonate is a highly functional and adaptable material with wide-ranging applications across industries. Its favorable physical and chemical properties, combined with its safety and cost-effectiveness, make it a valuable component in everything from health supplements to industrial manufacturing. Whether you're sourcing for p-h-a-rmaceutical formulations, food production, or high-performance athletic use, our premium-grade magnesium carbonate can meet your needs with confidence and reliability.
For more technical data, custom specifications, or to request a sample, please contact our sales team.
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