Buy low price INR 285 Magnesium Carbonate MgCO₃ Block for Fireproofing, Insulation, Gymnastics, climbing, weightlifting, Ceramic and refractory manufacturing at Wedge India. Magnesium Carbonate (MgCO₃) blocks are solid, white, odorless, and non-toxic mineral products designed for use in high-temperature, chemical, and construction environments. These blocks are known for their excellent thermal decomposition, alkaline buffering, and fire-retardant properties, making them suitable for a wide range of industrial applications.
 
Key Considerations for Selection
Whiteness: For applications requiring high whiteness, such as cosmetics or pharmaceuticals, ensure the supplier provides specifications or samples confirming the whiteness level.
Thermal Stability: If your application involves high temperatures, verify the decomposition temperature and ensure the product meets your thermal stability requirements.
Purity and Grade: Depending on your application (industrial, pharmaceutical, food-grade), select the appropriate grade and purity level.
Packaging and Quantity: Consider suppliers that offer packaging sizes and quantities that suit your needs, whether in bulk or smaller quantities.
 
Technical Specification – Magnesium Carbonate Block
1. ​​​​​​General Information
Product Name: Magnesium Carbonate Block
Chemical Formula: MgCO₃
CAS Number: 546-93-0
Molecular Weight: 84.31 g/mol
Appearance: White solid block
Typical Block Size: 50 x 50 x 10 mm (customizable)
 
2. Physical Properties
Property
Specification
Density (Bulk/Compacted)
2.5 – 2.8 g/cm³
Surface Texture
Smooth or rough (as per mold)
Moisture Content
< 1.0%
Porosity
15 – 25% (varies by pressing method)
Color
White to off-white
Compressive Strength
15 – 40 MPa
Hardness
~3.5 on Mohs scale
Specific Surface Area
2 – 15 m²/g (light grade)
 
3. Thermal Properties
Property
Specification
Thermal Decomposition Temp.
350 – 540 °C (Releases CO₂)
End Product After Decomposition
MgO (melting point: ~2800 °C)
Service Temperature (Composites)
Up to 900 °C (with fireproof binders)
 
4. Chemical Properties (Typical Purity Range)
Component
Typical % by Weight
MgCO₃ (as MgO basis)
40 – 45%
CaCO₃
< 2.0%
SiO₂
< 1.0%
Fe₂O₃
< 0.5%
Insolubles
< 0.5%
Loss on Ignition (LOI)
~52 – 56% (mainly CO₂)
 
Key Functional Characteristics
Good thermal resistance up to decomposition point.
Acts as a CO₂ releasing flame retardant.
Easily calcined to MgO for refractory uses.
Strong alkaline buffer and acid neutralizer.
Lightweight variants available for sound and heat insulation.
 
Applications
Refractory and fireproof panels
Chemical and pharmaceutical intermediates
Construction additive (e.g., Sorel cement)
Rubber/plastic filler
Chalk for sports and grip
 
Packaging & Handling
Standard Pack Size: Blocks, 25 kg box, or palletized bulk
Storage: Store in dry, well-ventilated area
Shelf Life: 24 months (if kept moisture-free)
Safety: Non-toxic, but avoid inhalation of fine dust