USP Grade White High Purity Powder Magnesium Hydroxide Fine Granular Uniform Particle Size Stable Performance and Customizable Specifications

Model NO.
HPMHP39
EINECS
215-171-9
Classification
Magnesium Hydroxide
Appearance
White Powder or Suspension
Grade Standard
Medicine Grade
Solubleness
Slightly Soluble in Water, Soluble in Acid
Ionization Capacity
Weak Alkali
Quality
Superior Grade
Usage
Dietary Alkali, Industrial Alkali
Sample
Free
Other Name
Magnesium Hydroxide
Assay
≥99%
Color
White
Shape
Powder
Particle Size Range
200-325 Mesh
pH
10.5-11.5
Melting Point
350°C
Solubility
Slightly Soluble in Water
Storage Conditions
Keep in a Cool and Dry Place
Certification
ISO 9001
Shelf Life
24 Month
Environmental Protection
Yes
Relative Molecular Mass
58.32
Transport Package
Kraft Paper Bag
Specification
25Kg/bag
Trademark
RunFu
Origin
China
HS Code
28259000
Production Capacity
10000ton/Years
Reference Price
$ 1,080.00 - 1,215.00
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Product Description

Product Overview & Executive Summary
High Purity Magnesium Hydroxide Powder - Product Datasheet & Specifications
Product Name: High Purity Magnesium Hydroxide Powder
Synonym: Magnesite Hydroxide Powder, Mg(OH) 2 Powder, High Purity Mg(OH) 2
Chemical Formula: Mg(OH) 2
CAS Number: 1309-42-8
EINECS Number: 215-171-9
Product Description
                                                                                                                                                                                                                                                                                                                                
High Purity Magnesium Hydroxide Powder is produced via chemical precipitation from magnesium salts, followed by filtration, washing, drying, and high-precision milling. The resulting powder features ultra-fine, uniform particles, high purity (>99% Mg(OH) 2 ), and low heavy metal content, making it suitable for stringent industrial and food-grade applications.
The powder's high specific surface area (50–100 m²/g) and controlled particle size (D50 2–10 μm) provide excellent reactivity, dispersibility, and adsorption properties. Its low moisture content (<0.5%) and non-caking nature ensure long shelf life, easy handling, and reliable incorporation into liquid or solid matrices.
High Purity Magnesium Hydroxide Powder also serves as a precursor for magnesium oxide production, a pH regulator, and a neutralizing agent in both environmental and food applications, providing versatility across multiple industries.
USP Grade White High Purity Powder Magnesium Hydroxide Fine Granular Uniform Particle Size Stable Performance and Customizable Specifications
USP Grade White High Purity Powder Magnesium Hydroxide Fine Granular Uniform Particle Size Stable Performance and Customizable Specifications
USP Grade White High Purity Powder Magnesium Hydroxide Fine Granular Uniform Particle Size Stable Performance and Customizable Specifications
Key Features
High Purity Mg(OH) 2 : Magnesium hydroxide content ≥ 99%, ensuring excellent chemical stability.
Ultra-Fine Powder: D50 2–10 μm for uniform dispersion and fast reactivity.
Enhanced Flowability: Suitable for automated feeding, mixing, and compounding.
High Surface Area: Promotes adsorption, neutralization, and flame retardant efficiency.
Stable Powder: Resistant to moisture, CO 2 , and atmospheric degradation.
Customizable Particle Size & Bulk Density: Tailored to specific application requirements.
Regulatory Compliance: Meets ISO, USP, FCC, and food-grade standards.
Low Heavy Metals: Safe for pharmaceutical, food, and feed applications.
Detailed Technical Specifications & Analytical
Chemical Composition & Purity
Parameter
Specification
Standard Grade
High Purity Grade
Test Method
Magnesium Hydroxide (Mg(OH) 2 )
≥ 99%
98.5–99%
≥ 99.5%
Gravimetric
Loss on Ignition (LOI)
≤ 2.5%
2.0%
1.5%
950°C ± 25°C
Calcium Oxide (CaO)
≤ 0.3%
0.2%
≤ 0.1%
ICP-OES
Iron (as Fe 2 O 3 )
≤ 0.05%
0.03%
≤ 0.01%
Colorimetric
Chlorides (as Cl)
≤ 0.05%
0.03%
≤ 0.02%
Potentiometric
Sulfates (as SO 4 )
≤ 0.10%
0.08%
≤ 0.05%
Gravimetric
Heavy Metals (as Pb)
≤ 0.002%
Complies
≤ 0.001%
USP/EP
Arsenic (As)
≤ 0.0001%
Complies
≤ 0.00005%
ICP-MS
SiO 2
≤ 0.1%
0.08%
≤ 0.05%
XRF
Moisture Content
≤ 0.5%
0.4%
≤ 0.3%
Gravimetric
Physical Properties
Parameter
Specification / Typical Value
Test Method
Notes
Appearance
White, fine powder
Visual
Smooth, non-caking surface
Bulk Density (Loose)
0.3–0.5 g/cm³
ASTM B527
Adjustable via milling
Tapped Density
0.5–0.8 g/cm³
ASTM B527
—
Particle Size Range (D50)
2–10 μm (customizable)
Laser Diff.
Other sizes available on request
Specific Surface Area (BET)
50–100 m²/g
BET
High surface area for adsorption
Whiteness
≥ 95%
CIE Lab
—
Oil Absorption
40–70 g/100g
ASTM D281
Indicates porosity
Refractoriness
≥ 1000°C
Furnace Test
Moderate thermal resistance
Solubility
Practically insoluble in water
—
Soluble in acids
Flowability
Excellent
ASTM D1238
Ensures uniform dosing
Key Characteristics & Functional Advantages
                                                                                                                                                                                                                                                                                                                              
High Purity & Food Safety: Minimal heavy metals, compliant with food and pharmaceutical standards.
High Surface Area: Enhances adsorption, neutralization, and flame retardant efficiency.
Uniform Particle Size: Consistent reactivity and dispersibility in liquid or solid matrices.
Stable Powder: Resistant to moisture, caking, and environmental degradation.
Controlled Reactivity: Optimized for pH regulation, environmental neutralization, or food additive applications.
Enhanced Handling & Dosing: Ideal for automated systems and large-scale production.
USP Grade White High Purity Powder Magnesium Hydroxide Fine Granular Uniform Particle Size Stable Performance and Customizable Specifications
Primary Applications & Industries Served
Flame Retardant Systems: Used as halogen-free flame retardant additive in plastics, rubber, and coatings.
Environmental & Water Treatment: Neutralizes acidic water and removes heavy metal ions.
Food & Nutritional Supplements: Provides magnesium in fortified foods, beverages, and dietary supplements.
Pharmaceutical Excipients: Used in tablets and antacids as active or inactive ingredient.
Cosmetics & Personal Care: Functions as pH regulator and mild abrasive in certain formulations.
Chemical Intermediates: Precursor for magnesium oxide and other magnesium derivatives.
Packaging, Storage & Handling
Packaging Options: 25 kg kraft paper bags with PE liner, 500/1000 kg big bags; vacuum-sealed packaging available.
Storage: Store in cool, dry, ventilated area, away from moisture and CO 2 .
Shelf Life: 24 months if sealed.
Handling Precautions: Avoid dust inhalation; wear PPE including mask, goggles, gloves.
USP Grade White High Purity Powder Magnesium Hydroxide Fine Granular Uniform Particle Size Stable Performance and Customizable Specifications
Safety Information (Summary of SDS)
GHS Classification: Not hazardous under GHS.
Hazard Statements: May cause mild irritation if dust contacts eyes or is inhaled.
First Aid Measures:
- Inhalation: Move to fresh air; seek medical attention if discomfort persists.
- Eye Contact: Rinse with clean water for several minutes.
- Skin Contact: Wash thoroughly with soap and water.
- Ingestion: Rinse mouth; consult medical advice if ingested in large quantities.
Quality Assurance & Customization
Quality Management System: Produced under ISO 9001:2015 standards.
Batch Traceability: Each shipment includes a Certificate of Analysis (CoA) confirming purity and physical properties.
Regulatory Compliance: Meets REACH, RoHS, USP, FCC, ISO standards for industrial, food, and pharmaceutical use.
Customization Services:
- Tailored particle size distribution (2–20 μm D50).
- Adjustable bulk density, surface area, and flowability.
- Surface modifications for enhanced dispersibility.
- Calcination and precipitation adjustments for controlled reactivity.
Disclaimer
                                                                                                                                                                                                                                              
All data is based on production experience and provided in good faith. Users must verify suitability for their intended applications. Specifications may change without prior notice. Refer to the Safety Data Sheet (SDS) for detailed handling and safety guidance.

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