Magnesium Oxide (MgO), also known as Magnesia, is an inorganic compound produced by the thermal decomposition of magnesium carbonate (MgCO₃) or magnesium hydroxide (Mg(OH)₂). It appears as a fine white powder with excellent heat resistance.
Appearance: Fine white powder, odorless, slightly soluble in water, more soluble in acids
High melting point: ~2,800°C, making it highly refractory
Mildly alkaline: Acts as a base, neutralizing acids
Good electrical insulation and high thermal resistance
Refractories – Used in furnace linings, crucibles, ceramics, and insulation materials due to its high melting point
Chemical industry – As a catalyst, absorbent, and additive in rubber and plastics
Agriculture – Soil conditioner to reduce acidity and provide magnesium nutrition
Food & Pharmaceuticals – Food additive (anti-caking agent), magnesium supplement, antacid, and laxative
Environmental uses – Absorbs acidic gases (e.g., SO₂) in flue gas treatment
