Magnesium Oxide 96% Heavy


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Magnesium oxide (MgO), or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium. It has an empirical formula of MgO and consists of a lattice of Mg2+ ions and O2− ions held together by ionic bonding. Magnesium hydroxide forms in the presence of water (MgO + H2O → Mg(OH)2), but it can be reversed by heating it to separate moisture.

  • One of the components used to make cement
  • Used by libraries for preserving books
  • Used in medicine to relief heartburn and sour stomach
  • Insulator in industrial cables
  • Component of tubular construction heating elements
  • Used as a protective coating in plasma displays

Minimum Assay: >96%
Molecular Formula: MgO
Molecula Formula: 40.30
Solubility in water (% weight): Insoluble in water
Melting Point: 2852°C
Boiling Point: 3600°C
Refractive Index: 1.736
Substance insoluble in acetic acid: <0.1%
Substance soluble in water: <1.8%
Chloride (Cl): 0.04%
Sulphate (SO4): 0.003%
Heavy metals (as Pb): 0.000036%
Calcium (Ca): 0.748%
Iron (Fe): 0.0006%
Arsenic (As): <0.0004%
Loss on ignition @ 990 C: 8.0%

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 1309-48-4
Einecs No: 215-171-9


Additional information

Weight N/A
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250gm, 500gm, 1Kg, 5Kg, 25Kg