Zirconium (III) fluoride

Crystal structure
__ Zr 3+      __ F -
General
Surname	Zirconium (III) fluoride
other names	Zirconium trifluoride Zirconium (III) fluoride
Ratio formula	ZrF 3
Brief description	bluish-gray solid
External identifiers / databases
CAS number 13814-22-7 Wikidata Q4493243
properties
Molar mass	148.22 g mol −1
Physical state	firmly
density	4.26 g cm −3
Melting point	300 ° C (decomposition)
solubility	sparingly soluble in hot water
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Zirconium (III) fluoride is a chemical compound of zirconium from the group of fluorides .

Extraction and presentation

Zirconium (III) fluoride can be obtained by reacting hydrogenated zirconium with a mixture of hydrogen fluoride and hydrogen at 750 ° C.

${\displaystyle \mathrm {2\ Zr+6\ HF\ \longrightarrow 2\ ZrF_{3}+3\ H_{2}} }$

It is also possible to produce it by reducing (NH ₄ ) ₂ ZrF ₆ with hydrogen at 650 ° C.

properties

Zirconium (III) fluoride is a bluish-gray solid that is thermally stable up to 300 ° C. It is sparingly soluble in hot water, easily soluble in hot acids and insoluble in caustic soda and ammonia solution . Its crystal structure corresponds to that of rhenium (VI) oxide .

Individual evidence

1. ↑ ^{a b c d e f g} Georg Brauer (Ed.), With the collaboration of Marianne Baudler u. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 259.
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
3. ↑ Paul Ehrlich, Fritz Plöger, Ernst Koch, Gustav Kaupa: About zirconium (III) fluoride. Attempts to prepare thorium (III) fluoride. In: Journal of Inorganic and General Chemistry. 333, 1964, pp. 209-215, doi : 10.1002 / zaac.19643330407 .