Magnesium Oxide Properties, Molecular Formula, Applications - WorldOfChemicals

Magnesium Oxide Properties

Magnesium Oxide

Monopotassium Phosphate-Molecule 3D Struture
Molecule Structure Image



Magnesium oxide is a mineral that occurs naturally as periclase and is a source of magnesium. It is one of the raw materials for making Portland cement in dry process plants. It is an efficient moisture absorbent used by many libraries for preserving books. In medicine, magnesium oxide is used for relief of heartburn and sore stomach, as an antacid, magnesium supplement, and as a short-term laxative. It is also used to improve symptoms of indigestion. It is used as an insulator in industrial cables, as a basic refractory material for crucibles and as a principal fireproofing ingredient in construction materials. It is used as a reference white color in colorimetry, owing to its good diffusing and reflectivity properties. It may be smoked onto the surface of an opaque material to form an integrating sphere. It is also used as a protective coating in plasma displays.

Chemical Properties

Appearance White Powder
Boiling Point 3600 °C
CAS Number 1309-48-4
Class NA
Crystal Structure Cubic
Density 3.58 g/cm3
EINECS Number 215-171-9
HS Code 25199010
IUPAC Name Magnesium Oxide
InChI 1S/Mg.O
Main Hazards Metal fume fever, Irritant
Melting Point 2852 °C
Molar Mass 40.304 g/mol
Molecular Formula MgO
NFPA 704 H-1,F-0,R-0,C-NA
Other_Cations Beryllium Oxide;Calcium Oxide;Strontium Oxide;Barium Oxide
RTECS Number OM3850000
Refractive 1.736
Related Compounds Magnesium Hydroxide;Magnesium Nitride
Solubility 0.086 g/l
Synonyms Magnesia;Periclase;Magnesium Oxide;Causmag;Granmag;Maglite;Seasorb;Animag;Magcal;Marmag;Oxomagnesium