Magnesium fluoride
English name
[structure or sub Dao]
[density] 3.148
Melting point (℃)
[boiling point (℃)] 2239
[character] white tetragonal powder crystal.
[solubility] slightly soluble in water, soluble in nitric acid, insoluble in ethanol.
[purpose] it is used for manufacturing ceramics and glass; flux of metallurgical magnesium metal; coating of lens and filter in optical instrument; fluorescent material of cathode ray screen; flux, etc.
[preparation or source] magnesium carbonate is prepared by mixing magnesium carbonate with water, gradually pouring it into half diluted hydrofluoric acid, and then drying the precipitate at 400 ℃.