About Magnesium Oxide Powder

Magnesium Oxide Powder (magnesia) is an inorganic compound with the chemical formula MgO. Typically supplied as a fine, white powder or crystalline solid, it is insoluble in water and noted for its thermal stability and basic (alkaline) character. Commercially, it is produced by calcining magnesite (magnesium carbonate) or precipitating and calcining magnesium hydroxide derived from seawater and brines.

Thanks to its heat resistance, alkalinity, and reactivity, Magnesium Oxide Powder is used across steelmaking and refractories, agriculture and animal nutrition, pharmaceuticals, environmental treatment, plastics and rubber, construction materials, and specialty chemical manufacture.

Magnesium Oxide Powder Uses

Refractory and High-Temperature Applications

Magnesium Oxide Powder is a key ingredient in refractory bricks, castables, and furnace linings due to its excellent resistance to heat, slag, and corrosion. It supports demanding processes in steel, cement, glass, and non-ferrous metal production where durability and thermal stability are essential.

Agricultural and Nutritional Supplement

As a concentrated source of magnesium, MgO is used in animal feeds to support herd health and productivity, and in soil conditioners and fertilisers to correct magnesium deficiencies. Its high Mg content and controlled reactivity make it practical for both feed formulations and agronomic blends.

Pharmaceutical and Food Applications

In pharmaceuticals, Magnesium Oxide Powder is used in antacid and laxative formulations to neutralise excess stomach acid and support bowel function. It may also be employed as a magnesium supplement to help maintain adequate dietary intake where required.

Environmental and Chemical Processing

The strong neutralising capacity of MgO makes it effective in wastewater treatment, acid neutralisation, and flue gas desulphurisation. It also serves as a precursor for producing magnesium salts and specialty compounds in diverse chemical processes.

Construction Materials and Industrial Fillers

Magnesium Oxide Powder is incorporated into magnesium-based cements, boards, and specialty binders for fire resistance and dimensional stability. In rubber and plastics, it can function as a filler, acid scavenger, and processing aid to improve compound performance.

Magnesium Oxide Powder Supplier Australia, USA & More!

Redox are trusted, authorised suppliers of Magnesium Oxide Powder. With distribution centres worldwide, we can supply to Australia, USA, UK, NZ, Europe, Asia and more. Get in touch with our expert team, who can help you order the right product, form and amount for your needs.