Magnesium Hydroxide (Mg(OH)₂)
High-Purity Industrial & Pharmaceutical Grade Magnesium Hydroxide – Reliable Bulk Supplier for Wastewater Treatment, Flame Retardants, Polymer Compounding, and Regulated Formulations
Magnesium Hydroxide (Mg(OH)₂) is an inorganic alkaline compound supplied as a high-purity white solid used across chemical processing, environmental treatment, polymer compounding, pharmaceuticals, and specialty manufacturing. It functions primarily as a neutralizing agent, acid scavenger, flame retardant additive, and pH regulator. Industrial buyers procure magnesium hydroxide for its controlled alkalinity, low solubility, thermal stability, and predictable reaction kinetics.
Natraj Chem supplies consistent-quality material sourced from verified top-tier manufacturers and validated through multi-stage quality checks to ensure batch uniformity, chemical reliability, and supply continuity for production environments.
Chemical Identity
| Parameter | Specification |
|---|---|
| Chemical Name | Magnesium Hydroxide |
| Molecular Formula | Mg(OH)₂ |
| Molecular Weight | 58.32 g/mol |
| CAS Number | 1309-42-8 |
| EC Number | 215-170-3 |
| Chemical Class | Inorganic magnesium compound |
| Appearance | White powder or slurry |
| Odor | Odorless |
| Solubility | Slightly soluble in water; soluble in acids |
| Decomposition | ~350 °C, releases water vapor |
Technical Properties
Precise physical and chemical characteristics engineered for consistent industrial performance.
| Property | Typical Value |
|---|---|
| Mg(OH)₂ Content | 95–99% |
| pH (Suspension) | 9.5–10.5 |
| Density | ~2.36 g/cm³ |
| Bulk Density | 0.3–0.6 g/cm³ (varies by grade) |
| Loss on Ignition | ~30–32% |
| Heavy Metals | ≤0.003% (pharma grade) |
| Particle Size | Custom specification |
Values vary by grade and particle engineering.
Key Functional Benefits
Why industries prefer magnesium hydroxide for demanding applications
Industrial Applications
Water & Wastewater Treatment
Neutralizing acidic effluents, precipitating heavy metals, and stabilizing sludge pH.
Plastics & Polymers
Halogen-free flame retardant and smoke suppressant in polyolefins, PVC, rubber.
Pharmaceuticals & Healthcare
Antacid actives, buffering agents, excipients in regulated formulations.
Chemical Processing
Intermediate and neutralizing reagent in synthesis and acid systems.
Paper & Pulp
Neutralizing agent and filler for brightness, opacity, pH stability.
Food Processing
Acidity regulator, anti-caking agent (approved grades only).
Environmental Remediation
Soil stabilization and acid mine drainage treatment.
Flame Retardant Systems
In cables, rubbers, construction materials, fire-safety products.
Electronics & Cable Insulation
Smoke suppression and flame protection in wires, cables, circuit boards, electrical devices.
Grades / Specifications Available
Natraj Chem supplies magnesium hydroxide in multiple industrial grades to match your specific process conditions and regulatory requirements
💡 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 through a structured process:
Rigorous testing to confirm specified purity levels.
Controlled to ensure clean performance in formulations.
Strict screening for regulatory and safety compliance.
Measured for consistent dispersion and reactivity.
Controlled to maintain flowability and shelf life.
Verified for thermal behavior and alkalinity performance.
Regulatory / Safety Information
Magnesium hydroxide is generally classified as a low-hazard inorganic compound when handled according to industrial safety practices. Expand cards for details.
Safe for industrial use following standard protocols; not classified under major hazard categories.
No fire or explosion risk under normal conditions; stable during storage and handling.
Ease of global shipping and logistics without special restrictions.
Complete hazard information, handling guidelines, and emergency measures provided with every shipment.
Use appropriate PPE and ventilation for fine powder grades to minimize inhalation risk.
Comply with regional workplace exposure standards (e.g., OSHA, COSHH) and implement appropriate engineering controls for dust-generating operations.
Packaging & Supply
Available packaging formats designed for safe handling, storage, and efficient logistics:
25 kg Laminated HDPE Bags
With inner moisture barrier liner for protection and easy manual handling.
50 kg Industrial Sacks
Heavy-duty multi-wall bags suitable for bulk industrial applications and palletizing.
Jumbo/FIBC Bags (500–1000 kg)
Big bags with discharge spout for high-volume users and optimized logistics.
Bulk Tanker / Silo Delivery
For slurry grade or very large volume powder requirements with pneumatic unloading.
Reliable multi-source supply chain ensures consistent availability and short lead times.
Storage & Handling
Recommended practices to maintain product quality and ensure safe handling:
Store in dry, well-ventilated areas
Avoid exposure to moisture and extreme temperatures to prevent caking or degradation.
Keep packaging sealed
Close bags immediately after use to prevent moisture ingress and maintain free-flowing properties.
Avoid contact with strong acids
Prevent unintended reactions; store separately from incompatible materials.
Use dust extraction / ventilation
During transfer and handling of powder grades to control airborne dust and ensure worker safety.
Product remains stable with indefinite shelf life under recommended conditions.
Why Industries Source from Natraj Chem
- Established chemical expertise since 1984
- Multi-decade sourcing experience across specialty materials
- Supplier network restricted to audited manufacturers
- Batch consistency verified before dispatch
- Structured procurement for long-term contracts
- Reliable lead times for bulk industrial supply
- Technical validation for specification matching
The sourcing model ensures consistent quality without production variability risks.
Technical Support & Documentation
Grade Selection
Expert guidance on optimal grade for your application.
Compatibility Evaluation
Assessment of product suitability with your formulations.
Specification Matching
Customized specs to meet your technical requirements.
Application Suitability
Consultation on optimal usage in your environment.
Regulatory Documentation
Full compliance and certification support.
Bulk Procurement Planning
Strategic sourcing and logistics for large volumes.
Frequently Asked Questions
It is used as a neutralizing agent in wastewater, halogen-free flame retardant in polymers, antacid in pharmaceuticals, and pH regulator across multiple sectors.
It has low solubility in water (slightly soluble), providing gradual alkalinity release, but dissolves in acids.
It decomposes endothermically around 350 °C, releasing water vapor and forming magnesium oxide.
Its low solubility allows controlled pH adjustment without overdosing risks, unlike stronger bases.
Industrial grades typically 95–99%, with higher purity for pharmaceutical and food applications.
Yes, as a halogen-free flame retardant and smoke suppressant in plastics, rubbers, and cables.
Food-grade variants are safe within regulatory limits as acidity regulators or supplements.
A typical suspension exhibits pH between 9.5 and 10.5.
Store in dry, ventilated areas away from acids and moisture to prevent caking.
Water treatment facilities, polymer manufacturers, pharmaceutical companies, and chemical processors.
Get Technical Data & Custom Quote Today
Magnesium Hydroxide is a versatile alkaline compound valued for controlled neutralization, thermal stability, and formulation compatibility across multiple industries. With verified sourcing, strict quality validation, and supply chain discipline, Natraj Chem delivers specification-consistent material suitable for industrial production, regulated manufacturing, and long-term procurement programs.
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