Chromium(II) fluoride

Chromium(II) fluoride
	; Cr2+ F−
Names
	Other names chromium difluoride, chromium fluouride, chromous fluoride
Identifiers
CAS Number	10049-10-2;
3D model (JSmol)	Interactive image;
ChemSpider	59614;
ECHA InfoCard	100.030.140
EC Number	233-168-0;
PubChem CID	66229;
UNII	53XZY98IXY ;
CompTox Dashboard (EPA)	DTXSID30143338 ;
	InChI InChI=1S/Cr.2FH/h;2*1H/q+2;;/p-2 Key: RNFYGEKNFJULJY-UHFFFAOYSA-L;
	SMILES [F-].[F-].[Cr+2];
Properties
Chemical formula	CrF2
Molar mass	89.9929 g·mol−1
Appearance	blue-green iridescent crystals ; hygroscopic, turns to Cr2O3 when heated in air
Density	3.79 g/cm3
Melting point	894 °C (1,641 °F; 1,167 K)
Boiling point	> 1,300 °C (2,370 °F; 1,570 K)
Solubility in water	76.7 g/100 mL
Structure
Crystal structure	monoclinic
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	-8.645 kJ/g (solid)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314
Precautionary statements	P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chromium(II) fluoride is an inorganic compound with the formula CrF₂. It exists as a blue-green iridescent solid. Chromium(II) fluoride is sparingly soluble in water, almost insoluble in alcohol, and is soluble in boiling hydrochloric acid, but is not attacked by hot distilled sulfuric acid or nitric acid. Like other chromous compounds, chromium(II) fluoride is oxidized to chromium(III) oxide in air.

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