10175. Zirconium Fluoride

Nomenclature

CAS number: 7783-64-4
Zirconium tetrafluoride.
F4Zr; mol wt 167.22.
F 45.45%, Zr 54.55%.
ZrF4.

Description and references

Prepd by thermal decompn of (NH4)2ZrF6: v. Hevesy, Dullenkamp, Z. Anorg. Allg. Chem. 221, 161 (1934); according to the equation ZrCl4 + 4HF → ZrF4 + 4HCl: Wolter, Chem. Ztg. 51, 607 (1908); from zirconium oxide and fluorine: Haendler et al., J. Am. Chem. Soc. 76, 2177 (1954).

Properties

Strongly refractive, crystalline mass (monoclinic system). d16 4.6. Sublimes above 600°. Solubility in water (20°): 1.32 g/100 ml. Does not react with water; forms stable trihydrate. Freely soluble in hydrofluoric acid.