Magnesium Oxide

CAS 1309-48-4 · Molecular formula MgO · Appearance: white to off-white powder

High-purity MgO powders engineered for flame retardancy, ceramics, and specialty chemical formulations.

Series overview

What sets our magnesium oxide apart

Our magnesium oxide is produced from a controlled calcination process that lets us tune reactivity (from light-burned to dead-burned) and particle geometry to your process window.

Every lot is backed by a full certificate of analysis and consistent MgO content, so your formulations stay repeatable batch after batch.

Browse this series

ZH-V2 ZH-V3H ZH-M600 ZH-V150 Food & Pharmaceutical Grade Magnesium Oxide Industrial Grade Magnesium Oxide Light Magnesium Oxide Heavy Magnesium Oxide Nano Magnesium Oxide Industry-Specific Magnesium Oxide Analytical Reagent Grade Magnesium Oxide

Magnesium Oxide

Compare the grades on the two numbers that matter.

Guaranteed value — Typical value — — On request

Magnesium Oxide — Specifications
Specifications	ZH-V2	ZH-V3H	ZH-M600	ZH-V150	Food & Pharmaceutical Grade Magnesium Oxide	Industrial Grade Magnesium Oxide	Light Magnesium Oxide	Heavy Magnesium Oxide	Nano Magnesium Oxide	Industry-Specific Magnesium Oxide	Analytical Reagent Grade Magnesium Oxide
MgO (%)	≥ 99.7%	≥ 99.5%	≥ 99%	≥ 99%	On request	On request	On request	On request	On request	On request	On request
CaO (%)	On request	On request	On request	On request	On request	On request	On request	On request	On request	On request	On request
Chloride (Cl-) (%)	≤ 0.03%	≤ 0.025%	≤ 0.2%	≤ 0.2%	On request	On request	On request	On request	On request	On request	On request
Sulfate (SO4 2-) (%)	On request	On request	On request	On request	On request	On request	On request	On request	On request	On request	On request
Iron (Fe) (%)	On request	On request	On request	On request	On request	On request	On request	On request	On request	On request	On request
Acid insoluble matter (%)	≤ 0.03%	≤ 0.03%	On request	On request	On request	On request	On request	On request	On request	On request	On request
Loss on ignition (%)	On request	On request	On request	On request	On request	On request	On request	On request	On request	On request	On request
Specific surface area (m²/g)	On request	On request	≥ 175 m²/g	150 m²/g	On request	On request	On request	On request	On request	On request	On request
Particle size D50 (µm)	On request	On request	On request	On request	On request	On request	On request	On request	On request	On request	On request
Bulk density (g/ml)	≤ 0.38 g/ml	≥ 0.78 g/ml	≤ 0.45 g/ml	≤ 0.45 g/ml	On request	On request	On request	On request	On request	On request	On request
Sieve residue (%)	On request	On request	On request	On request	On request	On request	On request	On request	On request	On request	On request

Download Magnesium Oxide Grade Table

What Magnesium Oxide does in your formulation

Ceramics & Electronics

In a ceramic body MgO is small in the recipe and large in the result. It controls sintering and grain growth, and in soft magnetic ferrite it sits at …

Flame Retardants

Mg(OH)₂ does not fight fire with chemistry that produces toxic gas. It gets hot, decomposes endothermically, releases water vapour and leaves a magnes…

Packing and storage

Supplied in 25 kg multi-layer bags or 500–1000 kg jumbo bags, palletised and stretch-wrapped for safe transit and easy handling.

Not sure which number matters?

Tell us your target MgO content, reactivity, and particle size — we will match a grade or develop one for you.

Request a Quote Download Magnesium Oxide Grade Table