Product Overview & Executive Summary
Food Grade Heavy Magnesium Oxide Powder - Product Datasheet & Specifications
Product Name: Food Grade Heavy Magnesium Oxide Powder
Synonym: Heavy Magnesia Powder, Food Grade MgO, High Bulk Density Magnesium Oxide
Chemical Formula: MgO
CAS Number: 1309-48-4
EINECS Number: 215-171-9
Product Description
Food Grade Heavy Magnesium Oxide Powder is a dense, fine white powder derived from carefully selected magnesium carbonate through controlled calcination, high-precision milling, and sieving processes. The product is engineered to provide excellent chemical stability, low moisture content, and predictable reactivity, making it ideal for food fortification, dietary supplements, and functional food products.
The heavy powder form (bulk density 0.8–1.2 g/cm³) ensures easy handling, efficient compaction in tableting, and precise dosing in food formulations. The uniform particle distribution and high surface area allow rapid incorporation and controlled solubility in both solid and liquid products. Additionally, its low dust generation and non-caking nature contribute to safer handling and longer shelf life.
This product is particularly suited for applications requiring food safety compliance, consistent functional performance, and reliable dosing, such as magnesium-enriched beverages, fortified bakery products, antacids, and nutritional supplements. It also provides advantages in feed, pet food, and specialized functional foods, where high-purity magnesium is essential for quality and safety.
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Key Features
Food Grade Purity: Magnesium oxide content ≥ 98%, free from contaminants.
Heavy Powder Form: High bulk density for improved handling and compaction.
Enhanced Flowability: Facilitates even dosing in automated processes.
Stable Chemical Composition: Resistant to moisture and CO2 absorption.
High Surface Area: Promotes controlled solubility and reactivity in food matrices.
Regulatory Compliance: Meets FDA, USP, FCC, and ISO food standards.
Customizable Particle Size: Available in D50 10–20 μm or tailored sizes for specific applications.
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) | 0.8–1.2 g/cm³ | ASTM B527 | Low density enhances solubility |
| Tapped Density | 1.0–1.5 g/cm³ | ASTM B527 | — |
| Particle Size Range (D50) | 10–20 μm (customizable) | Laser Diff. | Other sizes upon request |
| Specific Surface Area (BET) | 20–50 m²/g | BET | High surface area for reactivity |
Whiteness | ≥ 94% | CIE Lab | — |
| Oil Absorption | 30–60 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 | ≥ 1700°C | Furnace Test | Sufficient for mild thermal use |
Key Characteristics & Functional Advantages
High Food Safety: Minimal heavy metals and contaminants, suitable for human consumption.
Enhanced Handling & Compaction: High bulk density facilitates dosing and tablet/formulation production.
Stable Powder: Resists caking and moisture uptake.
Controlled Reactivity: Optimized calcination ensures consistent solubility in food products.
Excellent Dispersibility: Integrates evenly in both liquid and solid matrices.
Shelf Stability: Maintains quality under proper storage conditions.
Primary Applications & Industries Served
Food & Nutritional Supplements: Used in tablets, powders, and beverages to provide essential magnesium.
Functional Foods & Beverages: Enhances magnesium content in drinks, shakes, and fortified foods.
Antacid & Digestive Aids: Acts as an active ingredient in food-grade antacids.
Bakery & Confectionery: Improves mineral fortification without affecting taste or texture.
Feed & Pet Food: Supplies magnesium in animal nutrition applications.
Food Processing Additive: Functions as pH regulator, stabilizer, or drying agent.
Packaging, Storage & Handling
Packaging Options: 25 kg kraft paper bags with PE liner, 500/1000 kg big bags; vacuum-sealed packaging available.
Storage: Keep in cool, dry, ventilated area, away from moisture and CO2.
Shelf Life: 24 months if sealed.
Handling Precautions: Avoid dust inhalation; wear 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 accompanied by a Certificate of Analysis (CoA) verifying purity and physical parameters.
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.
- Controlled calcination for optimized reactivity.