Magnesium Oxide
Produced, handled and packed separately from industrial grades, with lead, arsenic, cadmium and mercury reported on every batch COA. Used as an acidity regulator, an antacid and a magnesium nutrient source.
CAS 1309-48-4 · MgO
Minimum order quantity, lead time and packing depend on the grade and the order size — confirm them with us on an inquiry.
Full specification in the batch TDS
What you see above is what we publish openly. The complete parameter set — including the values still marked to be confirmed — is issued with the batch technical data sheet. Download the current TDS, or ask us for the full specification and the latest certificate of analysis.
| Specifications | Guaranteed value | Typical value | |
|---|---|---|---|
| MgO (%) | On request | On request | On request |
| CaO (%) | On request | On request | On request |
| Chloride (Cl-) (%) | On request | On request | On request |
| Sulfate (SO4 2-) (%) | On request | On request | On request |
| Iron (Fe) (%) | On request | On request | On request |
| Acid insoluble matter (%) | On request | On request | On request |
| Loss on ignition (%) | On request | On request | On request |
| Specific surface area (m²/g) | On request | On request | On request |
| Particle size D50 (µm) | On request | On request | On request |
| Bulk density (g/ml) | On request | On request | On request |
| Sieve residue (%) | On request | On request | On request |
Cells marked Values marked "On request" are grade-specific; our technical team issues them with the full data sheet.
25 kg multi-wall kraft bags with PE inner liner, palletised
Store sealed, dry, off the floor, in delivery order. Magnesium compounds pick up moisture and CO₂ from air.
Design, development, manufacture and sales of magnesium compounds
One of the drafting units for the Chinese industry standard for industrial magnesium oxide.
Member company; recognised supplier within the national magnesium salts industry.
Independent import and export rights — we ship directly, without a trading intermediary.
Certified high-tech enterprise status for magnesium-based new materials.
Patent portfolio covering nano magnesium materials and environment-friendly flame retardants.
Certified quality management system for the design, development, manufacture and sales of magnesium compounds.
ISO 9001 certified quality management system
Full Product Catalogue
Magnesium Oxide Grade Table
Magnesium Hydroxide Grade Table
Magnesium Carbonate Grade Table
Packing & Storage Guide
Sample Certificate of Analysis (example)
Our highest-assay magnesium oxide: 99.7% MgO minimum, with CaO, chloride and iron held low enough for electronic ceramics and soft magnetic ferrite. Choose it when trace impurities, not reactivity, are the risk.
View detailsA 99.5% high purity magnesium oxide for applications that need purity and reactivity together — rubber vulcanisation, pharmaceutical and food formulations, fine-chemical synthesis. Move to ZH-V2 when iron and calcium become the constraint.
View detailsHigh-activity magnesium oxide with a specific surface area of at least 175 m²/g. A high-functionality fine inorganic material: adsorbs more, cures faster and reinforces more per kilogram than a dense grade.
View detailsIt is a vulcanising agent and a vulcanisation activator — not an accelerator and not a filler. MgO controls scorch time, raises crosslink density and neutralises the acidic by-products of vulcanisation. If you dose it as if it were a filler, the compound will not cure the way your formulation expects.
Bulk density. Light grades have low bulk density and high specific surface area — they react faster and occupy more volume per kilogram. Heavy grades are dense and free-flowing. Light is the conventional choice for rubber; heavy suits technical ceramics and volume-limited processes. A container of light material fills by volume long before it fills by mass, so quote by tonne and plan by cubic metre.
Active MgO has a high specific surface area — ZH-M600 runs at 175 m²/g minimum and ZH-V150 at 150 m²/g. Specify it when reactivity is what your formulation is short of: adsorbents for harmful gases, electronic components, inks, and rubber or plastics where it functions as both filler and reinforcing agent. If the constraint is purity rather than reactivity, ZH-V2 or ZH-V3H is the right choice instead.
Minimum order quantity, lead time and packing depend on the grade and the order size — confirm them with us on an inquiry.