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Magnesium fluoride, Chemical formula:MgF2

Magnesium fluoride is a colorless tetragonal crystal or powder, odorless, insoluble in water and alcohol, slightly soluble in dilute acid, dissolved in nitric acid. Under the electro-optic heating,it appears weakly fluorescent purple, crystal have a good polarization effect, especially suitable for ultraviolet and infrared spectra.Toxic.

Magnesium fluoride used as a flux when smelting metal magnesium, aluminum additives, optical lens coatings, titanium pigments painted agents, cathode ray fluorescent screen material.

Also used in the manufacture of ceramics, glass; flux in metallurgy magnesium metal; optical instruments and lenses filter coating; cathode ray fluorescent screen material; flux and so on.

Magnesium Fluoride national standards

Card No.	Chemical composition (mass fraction)/%
	F	Mg	Ca	SiO2	Fe2O3	SO2-4	H2O
	=		=
MF-1	60	38	0.3	0.20	0.3	0.6	0.2
MF-2	45	28	_	0.9	1.1	1.3	1.0
Note 1:  According to GB / T1250-1989 the provisions of Article 5-2, to make a comparison between measured values or calculated values and the limit values specified in the table Note 2: As for special requirements in the table from the demand side, it will be reach an agreement by both parties, and indicate in the contract Implementation of standards YS/T691-2009