Chromium nitride

Chromium nitride
Names
	IUPAC name Chromium nitride
	Other names Chromium(III) nitride
Identifiers
CAS Number	24094-93-7 ;
3D model (JSmol)	Interactive image;
ChemSpider	81581 ;
ECHA InfoCard	100.041.819
EC Number	246-016-3;
PubChem CID	90362;
UNII	W46I1HZ91F ;
	InChI InChI=1S/Cr.N Key: CXOWYMLTGOFURZ-UHFFFAOYSA-N ; InChI=1/Cr.N/rCrN/c1-2 Key: CXOWYMLTGOFURZ-NIYUYJRQAK;
	SMILES [Cr]#N;
Properties
Chemical formula	CrN
Molar mass	66.003 g/mol
Appearance	Black powder
Density	5.9 g/cm3
Melting point	1770 ˚C (decomp.)
Solubility in water	Insoluble
Thermochemistry
Std molar; entropy (S⦵298)	37.75 J K−1 mol−1
Std enthalpy of; formation (ΔfH⦵298)	−117.15 kJ/mol
Hazards
Flash point	Non-flammable
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 1 mg/m3
REL (Recommended)	TWA 0.5 mg/m3
IDLH (Immediate danger)	250 mg/m3
Related compounds
Related compounds	Dichromium nitride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Chromium nitride is a chemical compound of chromium and nitrogen with the formula CrN. It is very hard, and is extremely resistant to corrosion. It is an interstitial compound, with nitrogen atoms occupying the octahedral holes in the chromium lattice:^[2] as such, it is not strictly a chromium(III) compound nor does it contain nitride ions (N³⁻). Chromium forms a second interstitial nitride, dichromium nitride, Cr₂N.

^ Chromium(III) nitride at webelements.com
^ ^a ^b Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 480. ISBN 978-0-08-022057-4.
^ http://www.alfa-chemcat.com/daten_msds/D/12149_-_D.pdf^{[permanent dead link]}
^ ^a ^b NIST Chemistry Webbook
^ ^a ^b ^c NIOSH Pocket Guide to Chemical Hazards. "#0141". National Institute for Occupational Safety and Health (NIOSH).

[webelements-1] Chromium(III) nitride at webelements.com

[G&E-2] Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 480. ISBN 978-0-08-022057-4.

[alfa-3] ttp://www.alfa-chemcat.com/daten_msds/D/12149_-_D.pdf^{[permanent dead link]}

[NIST-4] NIST Chemistry Webbook

[PGCH-5] NIOSH Pocket Guide to Chemical Hazards. "#0141". National Institute for Occupational Safety and Health (NIOSH).

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