Physical properties: white or colorless crystalline powder. Rutile lattice. Slight purple fluorescence. Very slightly soluble in water (18 ℃, 87mG / L), slightly soluble in dilute acid (especially nitric acid). The relative density of 3.18. Melting point 1248 ℃. Boiling point 2260 ℃.
Chemical Properties: Colorless tetragonal crystal or powder. Tasteless. It can be dissolved in nitric acid, slightly soluble in acid, insoluble in water and alcohol.
 
Uses: optical lens coating. Security powder. Ceramics, electronics industry. Manufacture of ceramics, glass. Metallurgical flux magnesium metal. Optical instruments lens and filter coating. A cathode ray fluorescent screen material. Flux, etc.