Magnesium Carbonate (MgCO₃)
High-Purity Industrial & Pharmaceutical Grade Magnesium Carbonate – Reliable Bulk Supplier for Industrial Processing, Formulation, and Functional Applications
Magnesium Carbonate (MgCO₃) is an inorganic magnesium salt supplied as a high-purity white powder or granular mineral grade for industrial processing, formulation, and functional additive applications. It functions as a pH regulator, reinforcing filler, anti-caking agent, adsorbent, and precursor for magnesium oxide production. Natraj Chem supplies consistent-quality magnesium carbonate sourced from verified manufacturers and validated through strict batch verification protocols to meet industrial performance and specification requirements.
Our magnesium carbonate portfolio serves pharmaceutical manufacturers, polymer processors, rubber compounders, food formulators, chemical plants, and specialty applications requiring controlled purity, particle size, and functional characteristics. With robust quality control systems and technical supply expertise, we deliver specification-compliant material backed by complete documentation support.
Chemical Identity
| Parameter | Specification |
|---|---|
| Chemical Name | Magnesium Carbonate |
| Molecular Formula | MgCO₃ |
| Molecular Weight | 84.31 g/mol |
| CAS Number | 546-93-0 |
| EINECS No. | 208-915-9 |
| Chemical Class | Inorganic magnesium salt |
| Appearance | White powder or crystalline solid |
| Odor | Odorless |
| Solubility | Practically insoluble in water; soluble in dilute acids |
| Decomposition | Releases CO₂ above ~350 °C |
Technical Properties
Precise physical and chemical characteristics engineered for consistent industrial performance.
| Property | Typical Value |
|---|---|
| MgO Content | 40–43% |
| CO₂ Content | 50–52% |
| pH (10% slurry) | 9.0–10.5 |
| Bulk Density | 0.3–0.8 g/cm³ (light grade) |
| True Density | ~3.0 g/cm³ |
| Loss on Drying | ≤2% |
| Iron (Fe) | ≤0.05% |
| Calcium (Ca) | ≤0.5% |
| Chlorides | ≤0.1% |
| Particle Size | Custom specification |
Values vary by grade and particle engineering.
Key Functional Benefits
Thermal decomposition control
Predictable conversion to MgO for calcination processes with consistent thermal properties.
Moisture adsorption
Porous structure effectively absorbs humidity in powders and tablets, ensuring product stability.
Alkalinity buffering
Stabilizes pH in formulations and suspensions for optimal performance and consistency.
Flow improvement
Reduces agglomeration in powdered blends, enhancing processing efficiency.
Reinforcement effect
Improves stiffness and dimensional stability in polymer matrices for enhanced performance.
Chemical neutrality
Compatible with most organic systems until acid exposure, ensuring versatile application.
Industrial Applications
Grades / Specifications Available
Natraj Chem supplies magnesium carbonate in multiple industrial grades to match your specific process conditions and regulatory requirements
Light Magnesium Carbonate
High surface area, low bulk density – ideal for adsorption applications, pharmaceutical excipients, and high-reactivity formulations requiring maximum interfacial activity.
Heavy Magnesium Carbonate
Dense mineral grade optimized for fillers and refractory feedstock – provides excellent reinforcement in polymer matrices and ceramic applications with controlled density.
Technical Grade
Versatile specification for industrial processing and chemical manufacturing – optimized for cost-effective bulk applications and intermediate synthesis processes.
Pharma Grade
Controlled impurities and microbiological parameters meeting pharmacopeial standards (IP, BP, USP, EP) – complete documentation and batch certificates provided.
Food Grade
Compliant with applicable food additive standards – safe for use in food processing, dietary supplements, and nutraceutical formulations with full traceability.
Custom Specifications
Tailored particle size distributions, purity ranges, bulk density, and surface area specifications for OEM requirements and specialized formulation needs.
💡 Need Help Selecting the Right Grade?
Our technical team provides expert consultation on grade selection based on your specific application requirements, processing conditions, and regulatory compliance needs. Contact us to discuss your formulation challenges and receive customized solutions.
Quality Control Parameters
Each supplied batch is verified against defined acceptance criteria:
Assay purity validation
Rigorous testing to ensure product meets specified purity standards.
Particle size distribution analysis
Precise measurement and control of particle characteristics.
Moisture content determination
Controlled moisture levels for optimal storage and performance.
Heavy metal screening
Comprehensive testing to meet regulatory compliance standards.
Insoluble matter testing
Quality verification for consistent formulation performance.
Bulk density verification
Confirmed physical properties for processing requirements.
Material is released only after conformity to specification sheets and supplier COA validation.
Packaging & Supply
Available packaging formats designed for safe handling and storage:
25 kg Laminated HDPE Bags
With inner liner for moisture protection and easy handling.
50 kg Industrial Sacks
Heavy-duty packaging for bulk industrial applications.
Jumbo Bags (500–1000 kg)
Large-scale packaging for high-volume users and efficient logistics.
Bulk Tanker Loads
For mineral grade and large-volume industrial requirements.
Consistent supply is maintained through multi-source procurement and inventory coordination.
Storage & Handling
Proper storage and handling guidelines for optimal product performance:
Store in dry, ventilated conditions
Maintain proper environmental controls to preserve product quality and prevent moisture absorption.
Protect from moisture ingress
Keep packaging sealed and avoid exposure to humid environments.
Avoid contact with acids
Prevents CO₂ evolution and maintains product stability during storage.
Use dust extraction during handling
Required for fine grades to ensure workplace safety and minimize airborne particles.
Shelf life remains stable under recommended storage conditions.
Regulatory / Safety Information
Magnesium carbonate is generally classified as a low-hazard inorganic compound when handled according to industrial safety practices.
Safety Data Sheet (SDS)
Complete hazard information and handling guidelines for workplace safety.
Technical Data Sheet (TDS)
Detailed specifications and performance characteristics for technical evaluation.
Certificate of Analysis (COA)
Batch-specific quality verification with test results and compliance confirmation.
Regulatory Compliance Declarations
Full documentation supporting regulatory requirements and standards compliance.
Users must follow local occupational exposure and dust control regulations.
Why Industries Source from Natraj Chem
- Established chemical industry expertise since 1984
- Verified manufacturer network with documented audits
- Batch-level quality verification
- Consistent specification adherence
- Reliable supply chain management
- Technical product matching for applications
- Industrial documentation support
The sourcing model ensures consistent quality without production variability risks.
Technical Support & Documentation
Technical assistance is handled by personnel familiar with industrial chemical specifications and performance criteria:
Grade Selection
Expert guidance on choosing the optimal product grade for your specific application.
Compatibility Evaluation
Assessment of product suitability with your existing formulations and processes.
Specification Matching
Customized specifications to meet your precise technical requirements.
Application Suitability
Technical consultation on optimal usage in your manufacturing environment.
Regulatory Documentation
Complete compliance documentation and certification support for your needs.
Bulk Procurement Planning
Strategic sourcing and logistics coordination for large-volume requirements.
Frequently Asked Questions
It is used as a filler, drying agent, pH buffer, adsorbent, and precursor for magnesium oxide production across pharmaceuticals, plastics, rubber, food processing, and chemical manufacturing.
No. It is practically insoluble in water but dissolves readily in dilute acids.
It decomposes thermally to magnesium oxide and carbon dioxide gas at temperatures above approximately 350 °C.
Light grade has higher surface area and lower bulk density; heavy grade is denser and used mainly as a mineral filler.
Industrial grades typically range from 95% to 99% purity depending on application requirements.
Yes. It is used as a reinforcing mineral filler in plastics and elastomers.
Food-grade material is safe when compliant with additive standards and used within regulatory limits.
A 10% slurry typically exhibits pH between 9 and 10.5.
It should be stored in dry conditions away from acids and moisture.
Common buyers include plastics manufacturers, rubber processors, pharmaceutical formulators, food processors, and chemical plants.
Get Technical Data & Custom Quote Today
Ready for pharmaceutical-grade purity, industrial-scale volumes, or tailored formulations? Our team provides fast responses with full documentation — no obligation.
- Technical datasheets (TDS) & Safety Data Sheets (SDS)
- Certificate of Analysis (COA) samples
- Competitive bulk pricing & volume quotes
- Distributor / reseller partnership opportunities
- OEM / custom manufacturing inquiries