Characteristic
Zinc fluoride is an inorganic chemical compound. It is encountered as the anydrous form and also as the tetrahydrate, ZnF2 • 4H2O (rhombohedral crystal structure).
Chemical formula:ZnF2 • 4H2O
Molar mass: 175.45 g/mol
Appearance : white needles hygroscopic
Density: 2.30 g/cm3
Melting point: 100 °C, decomposes
Solubility in water: 1.52 g/100 mL, 20 °C
Solubility: sparingly soluble in HCl, HNO3, ammonia
Magnetic susceptibility (χ): −38.2•10−6 cm3/mol
Application
Zinc fluoride tetrahydrate is used as a mild fluorinating agent in the replacement of chlorine in halogenated hydrocarbons, in fluorophosphate and fluoride glass, and in the manufacture of fluoride glass optical fibers and optical transmitting glass.