Details of Magnesium Fluoride

Magnesium fluoride is a white crystalline powder, with density of 3.146g/cm-3 and slightly soluble in water. It is used in manufacture of ceramic, glass, flux of smelting magnesium, coating lenses and filter of optical instruments and so on.

Item name: Magnesium Fluoride

Molecularformula:  MgF2
CAS No.:7783-40-6
Molecularweight:  62.31
Execute standard: National standard/GB

Details of Magnesium Fluoride:
Transmission Range : 0.12 to 7 μm (1)
Refractive Index : No 1.413 at 0.22 μm (4)
Reflection Loss : 5.7% at 0.22 μm (2 surfaces)
Absorption Coefficient : 40 x 10-3 cm-1 at 2.7 μm
Reststrahlen Peak : 20 μm (1)
dn/dT : 2.3 (para) 1.7 (perp) at 0.4 μm (1)
dn/dμ = 0 : 1.4 μm
Density : 3.18g/cc
Melting Point : 1255°C
Thermal Conductivity : 21 (para) 33.6 (perp) W m-1 K-1 at 300K (3)
Thermal Expansion : 13.7 (para) 8.9 (perp) x 10-6 /K (1)
Hardness : Knoop 415
Specific Heat Capacity : 1003 J Kg m-1 K-1
Dielectric Constant : 4.87 (para) 5.45 (perp) at 1MHz (1)
Youngs Modulus (E) : 138 GPa (2)
Shear Modulus (G) : 54.66GPa (2)
Bulk Modulus (K) : 101.32 GPa (2)
Elastic Coefficients : C11=140 C12=89 C44=57 C13=63 C66=96 (2)
Apparent Elastic Limit : 49.6 GPa (7200 psi)
Poisson Ratio : 0.276 (2)
Solubility : 0.0002g/100g water
Molecular Weight : 62.32
Class/Structure : Tetragonal, can cleave on c-axis

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