Product Overview & Executive Summary
Food Grade Light Magnesium Oxide Powder - Product Datasheet & Specifications
Product Name: Food Grade Light Magnesium Oxide Powder
Synonym: Light Magnesia Powder, Food Grade MgO, Activated Magnesium Oxide
Chemical Formula: MgO
CAS Number: 1309-48-4
EINECS Number: 215-171-9
Product Description
Food Grade Light Magnesium Oxide Powder is a highly refined, fine white powder derived from selected high-purity magnesium carbonate through controlled calcination and milling processes. The product is designed to meet food safety and regulatory standards, offering excellent solubility, dispersibility, and low heavy metal content for nutritional and food additive applications.
This powder features low bulk density (0.2–0.3 g/cm³) and high surface area, making it suitable for antacid formulations, dietary supplements, and food fortification. Its uniform particle distribution ensures consistent performance, while the low moisture content and stable chemical composition provide enhanced shelf life and handling convenience.
The product is widely used in food, beverage, and nutraceutical industries, and is compliant with ISO, USP, and FCC regulations for human consumption. Its reactivity can be tailored to optimize absorption in functional food products.
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Key Features
Food Grade Purity: Magnesium oxide content ≥ 98%, free from harmful contaminants.
Fine Powder Form: Excellent dispersibility, minimal dust, and easy incorporation into food matrices.
Low Bulk Density: Light powder ensures better solubility and controlled dosing.
High Surface Area: Promotes rapid reaction and absorption in food and beverage applications.
Regulatory Compliance: Meets FDA, USP, FCC, and ISO food standards.
Customizable Particle Size: Available in D50 6–10 μm or tailored ranges for specific formulations.
Stable Shelf Life: Resistant to moisture and CO2 under proper storage conditions.
Detailed Technical Specifications & Analytical
Chemical Composition & Purity
| Parameter | Specification | Standard Grade | High Purity Grade | Test Method |
Magnesium Oxide (MgO) | ≥ 98% | 98 - 99% | ≥ 98.5% | Gravimetric |
| Loss on Ignition (LOI) | ≤ 3.0% | 2.5% | 1.8% | 950°C ± 25°C |
Calcium Oxide (CaO) | ≤ 0.5% | 0.3% | ≤ 0.2% | ICP-OES |
Iron (as Fe2O3) | ≤ 0.05% | 0.03% | ≤ 0.01% | Colorimetric |
Chlorides (as Cl) | ≤ 0.1% | 0.07% | ≤ 0.05% | Potentiometric |
Sulfates (as SO4) | ≤ 0.15% | 0.1% | ≤ 0.08% | Gravimetric |
| Heavy Metals (as Pb) | ≤ 0.005% | Complies | ≤ 0.002% | USP/EP |
| Arsenic (As) | ≤ 0.0003% | Complies | ≤ 0.0001% | ICP-MS |
| SiO2 | ≤ 0.2% | 0.18% | ≤ 0.1% | XRF |
Physical Properties
Parameter | Specification / Typical Value | Test Method | Notes |
Appearance | White, fine, powder | Visual | Smooth, non-caking surface |
Bulk Density (Loose) | 0.2–0.3 g/cm³ | ASTM B527 | Low density enhances solubility |
| Tapped Density | 0.4–0.6 g/cm³ | ASTM B527 | — |
| Particle Size Range (D50) | 6–10 μm (customizable) | Laser Diff. | Other sizes upon request |
| Specific Surface Area (BET) | 50–120 m²/g | BET | High surface area for reactivity |
Whiteness | ≥ 95% | CIE Lab | — |
| Oil Absorption | 40–70 g/100g | ASTM D281 | Indicates surface porosity |
| Solubility | Practically insoluble in water | — | Soluble in dilute acids |
| Moisture Content | ≤ 0.5% | Gravimetric | Controlled for storage stability |
| Refractoriness | ≥ 1600°C | Furnace Test | Sufficient for mild thermal use |
Key Characteristics & Functional Advantages
High Food Safety: Low heavy metals, no harmful impurities.
Excellent Dispersibility: Integrates evenly in liquid or solid food matrices.
Enhanced Solubility: Fine particle size ensures rapid dissolution.
Stable Powder: Resists caking and moisture absorption during storage.
Custom Reactivity: Calcination parameters can be adjusted for controlled reactivity in functional foods.
Easy Handling: Lightweight powder reduces handling effort and improves dosing precision.
Primary Applications & Industries Served
Food & Nutritional Supplements: Used as a magnesium fortifier in tablets, powders, and beverages.
Antacid Formulations: Active ingredient in effervescent antacids and digestive aids.
Bakery & Confectionery: Enhances mineral content without altering flavor or texture.
Functional Beverages: Incorporated into drinks for dietary magnesium enrichment.
Feed & Pet Food: Provides essential magnesium for animal nutrition.
Food Processing Additive: Acts as pH regulator, drying agent, or stabilizer in food production.
Packaging, Storage & Handling
Packaging Options: 25 kg kraft paper bags with inner PE liner, 500/1000 kg big bags; vacuum-sealed packaging available.
Storage: Store in a cool, dry, ventilated environment, away from moisture and CO2 exposure.
Shelf Life: 24 months from manufacture if sealed.
Handling Precautions: Avoid dust inhalation; use proper PPE (mask, goggles, gloves).
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, FCC, USP, ISO food standards.
Customization Services:
- Tailored particle size distribution (D50 3–20 μm).
- Adjustable bulk density and flowability.
- Surface treatments to improve dispersibility or functional compatibility.
- Controlled calcination for optimized reactivity.