Magnesium_oxide Magnesium_oxide

Magnesium oxide - Definition and Overview
</table> Magnesium oxide is a white solid mineral that occurs naturally as periclase and is a source of magnesium. See also oxide.

Properties

Magnesium oxide crystals - SEM image (1350x)

General

Name Magnesium oxide
Chemical formula MgO
Appearance White solid

Physical

Formula weight 40.30 g/mol
Melting point 3073 K (2800 °C)
Boiling point 3873 K (3600 °C)
Density 3.58 ×103 kg/m3
Crystal structure Cubic FCC
Solubility 0.00062 g in 100 g water

Thermochemistry

ΔfH0liquid ? kJ/mol
ΔfH0solid ? kJ/mol
S0solid ? J/(mol·K)

Misc.

Thermal conductivity 42 W m-1K-1 at 273 K
Coefficient of thermal expansion 10.8 ×10-6/K at 273 K
Specific heat capacity 877 J kg-1 K-1
Dielectric constant 9.65 at 1 MHz
Young's modulus 250 GPa
Shear Modulus 155 GPa
Bulk modulus 155 GPa
Poisson's ratio 0.18

Safety

Ingestion No known effect.
Inhalation Causes irritation of upper respiratory tract.
Skin Causes irritation.
Eyes Causes irritation.

SI units were used where possible. Unless otherwise stated, standard conditions were used.

Disclaimer and references </font>

Example Usage of Magnesium
preampcc: b wrote a new blog post: Good source of calcium and Magnesium http://bit.ly/6mIk14
taylorhayden7: ionic Magnesium fizz before bed it puts me in the deepest sleep ever... I don't know if thats a good thing or not
BlackStephan: @LevnUMesmerized Well since I dont hav ur #, take Magnesium if u have it. If not eat a couple bananas. #HomeRemedies
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