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Magnesium Oxide Powder
(Magnesia)
95 – 99.999% pure
Magnesium Oxide Powder is a white solid mineral occurring naturally in nature as Periclase and is a
source of Magnesium. It has the empirical formula of MgO.
Properties:
Formula: MgO
CAS Number: 1309-48-4
Formula Weight: 40.30
Appearance: White Powder
Odor: Odorless
Density: 3.58 gm/cm3
Melting Point: 2852oC
Boiling Point 3600oC
Solubility in Water 0.086 gm/L
Crystal Structure Cubic
Refractive Index 1.735 (nD)
Applications:
MgO is used as a desiccant because of its moisture absorbency, in medicines for relief of heartburn and
as a laxative. In industrial and laboratory use MgO is used as an insulator in industrial cables as a basic
refractory material for ceramics and as a fire proofing material. MgO is used extensively in electrical
heating as a component of “CalRod” style heating elements. MgO is pressed into optical materials and
melted to form optical single crystals for infrared optics.