Magnesium Fluoride

Magnesium Fluoride

Magnesium Fluoride is a white or colorless inorganic chemical compound that is soluble in nitric acid and insoluble in alcohol and water. This material can be found in nature as the mineral sellaite.

Glass, Optical
As an optical material, magnesium fluoride exhibits transparency across a very wide range of wavelengths and has a low refractive index just below lithium fluoride’s. High quality magnesium fluoride can be pricey and lower grades may be useful in applications up to the infrared levels, although at this level it becomes inferior to calcium fluoride.
Used in the production of optical coatings, glass, lenses, cathode ray fluorescent screen material, and optical instruments.

Additional Notes:
*Along with lithium fluoride, magnesium fluoride is one of the materials that will transmit in the vacuum ultra violet range.
*This is a birefringence material, which means that its refractive index is dependent on the polarization and propagation direction of light.
*Magnesium fluoride is used to make telescope lenses.

Chemistry TDS SDS
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