What is Magnesium Oxide?
Magnesium Oxide (MgO), commonly known as Magnesia, is an inorganic compound produced by the calcination of magnesium carbonate or magnesium hydroxide. It is a white, fine crystalline powder with one of the highest melting points of all oxides (2852°C), making it an outstanding refractory material. It is available in two main commercial forms: Light Magnesium Oxide (low bulk density, high surface area, high reactivity) and Heavy Magnesium Oxide (high bulk density, lower reactivity, better suited for refractories).
Polychem Industries supplies Magnesium Oxide to refractory manufacturers, rubber compounders, construction chemical producers, and animal feed formulators across India and internationally. Its combination of high melting point, alkalinity, and reactivity makes it one of the most versatile metal oxides in industrial use.
Available Grades
| Grade | Form | Purity | Standard | Applications |
|---|---|---|---|---|
| Industrial Grade | Fine white powder | 90–98% (depending on grade) | Industrial | Refractories, construction, rubber, animal feed, environmental |
Applications & Uses
Refractories
One of the most important refractory materials globally. Heavy Magnesium Oxide (dead-burned magnesia) is used in the manufacture of refractory bricks, linings, and castables for steelmaking furnaces, cement kilns, non-ferrous metal furnaces, and other high-temperature industrial equipment.
Construction & Building Materials
Used in the production of Sorel cement (magnesium oxychloride cement), which is exceptionally hard and resistant to abrasion. Also used in fire-resistant boards, dry wall compounds, and construction chemical additives.
Animal Feed
Used as a magnesium supplement in ruminant animal feed to prevent grass tetany (hypomagnesaemia) in cattle and sheep. Provides a highly bioavailable source of magnesium for livestock.
Rubber Industry
Used as an activator and acid scavenger in rubber compounding, particularly in chloroprene and halogenated rubber formulations. Neutralises HCl generated during rubber vulcanisation.
Water & Waste Treatment
Used to neutralise acidic effluents and adjust pH in wastewater treatment. Its relatively slow reaction rate compared to lime gives more controlled pH adjustment in industrial effluent treatment.
Chemical & Pharmaceutical
Used as an antacid and laxative in pharmaceutical applications. Also used as a raw material for the production of other magnesium compounds and as a catalyst in certain chemical reactions.
Technical Specifications
Magnesium Oxide — Key Properties
Why Source Magnesium Oxide from Polychem Industries?
- Light and Heavy grades available to suit refractory, rubber, and agricultural applications
- Certificate of Analysis with MgO%, CaO%, SiO2% available on request
- Consistent quality for refractory manufacturers and rubber compounders
- Bulk supply capability for large production requirements
- Competitive pricing with reliable year-round availability
- Export documentation experience for international shipments
