SELLING OXIDE MAGNESIUM (MgO),
magnesium oxide is a white hygroscopic solid mineral
that occurs naturally as a periclast and is a source of magnesium (see also
oxide).
The properties are:
• Molecular formula: MgO
• Molecular weight: 40.3044 gr / mol
• Appearance: White powder
• Odor: Odorless
• Density: 3.58 g / cm³
• Melting point: 2852 ° C (5166 ° F; 3125 K)
• Boiling point: 3600 ° C (6510 ° F; 3870 K)
• Water solubility: 0.0086 gr / 100 mL (30 ° C)
• Solubility in other solvents: Soluble in acids,
ammonia; Insoluble in alcohol
• Acidity (pKa): 10.3
• Band gap: 7.8 eV
• Thermal conductivity: 45–60 W • m − 1 • K − 1
• Refractive index (nD): 1,736
• Crystal Structure: Halite (cube), cF8
• Cluster space: Fm3m, No. 225
• Coordination geometry: Octahedral (Mg2 +);
octahedral (O2–)
• Standard molar entropy So298: 27 J • mol − 1 • K − 1
• Standard enthalpy of formation ΔfHo298: −602 kJ •
mol − 1
• MSDS: ICSC 0504
• European Union Index: Not registered
• Main hazards: Metal smoke fever, Irritations
• Flash point: Not flammable
MgO is used as an insulator in the cable industry, as
a heat-resistant base for crucibles and as a fire-proof base in construction
materials. As a construction material, magnesium oxide wallboard has several
interesting characteristics: fire resistant, moisture resistant, mildew and
mildew resistant, and strong.
Noted:
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