Magnesium Fluoride (MgF2)-Pellets

Characteristic

Magnesium fluoride is an inorganic compound with the formula MgF₂. The compound is a white crystalline salt and is transparent over a wide range of wavelengths, with commercial uses in optics that are also used in space telescopes. It occurs naturally as the rare mineral sellaite.

Chemical formula：MgF₂

Molar mass：62.3018 g/mol

Appearance：White tetragonal crystals

Density：3.148 g/cm³

Melting point：1,263 °C (2,305 °F; 1,536 K)

Boiling point：2,260 °C (4,100 °F; 2,530 K)

Solubility in water：0.013 g/100 mL

Solubility：Insoluble in ethanol

Magnetic susceptibility (χ)：−22.7⋅10⁻⁶ cm³/mol

Refractive index (nD)：1.37397

Crystal structure：Rutile (tetragonal), tP6

Application

1. Used as flux for smelting metal magnesium and additive for electrolytic aluminum;

2. Used as spectral reagent;

3. Manufacturing fluxes for ceramics, glass and smelting magnesium and aluminum, coating lenses and filters in optical instruments.