Formula MgO
Growth method Flux melt
Max. sizes, (mm) Ø50.8
Transmission range, (µm)
(Thickness 1 mm)
0.3 – 7.0
Structure cubic
Density (g/cm3) 3.58
Melting point (°C) 2800
Hardness (Mohs) 5.8
Thermal expansion coefficient (10-6/K) 8
Thermal conductivity (W m-1 K-1) 40.6
Specific heat capacity (J kg-1K-1) 837
Solubility in water (g/100 cm3) 0.00062
Solubility in acids
Solubility in organic solvents
Wavelength (µm)
Refractive index
0.5
1.0
3.0
5.0
1.74
1.72
1.68
1.63
Absorption coefficient (cm-1)

Magnesium Oxide for VIS and IR-range