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Nitrogen trifluoride information


Nitrogen trifluoride
Nitrogen trifluoride
Nitrogen trifluoride
Names
IUPAC name
Nitrogen trifluoride
Other names
Nitrogen fluoride
Trifluoramine
Trifluorammonia
Identifiers
CAS Number
  • 7783-54-2 checkY
3D model (JSmol)
  • Interactive image
ChEBI
  • CHEBI:30231 checkY
ChemSpider
  • 22959 checkY
ECHA InfoCard 100.029.097 Edit this at Wikidata
EC Number
  • 232-007-1
Gmelin Reference
1551
PubChem CID
  • 24553
RTECS number
  • QX1925000
UNII
  • 4402F4X0RH checkY
UN number 2451
CompTox Dashboard (EPA)
  • DTXSID4040181 Edit this at Wikidata
InChI
  • InChI=1S/F3N/c1-4(2)3 checkY
    Key: GVGCUCJTUSOZKP-UHFFFAOYSA-N checkY
  • InChI=1/F3N/c1-4(2)3
    Key: GVGCUCJTUSOZKP-UHFFFAOYAA
SMILES
  • FN(F)F
Properties
Chemical formula
NF3
Molar mass 71.00 g/mol
Appearance colorless gas
Odor moldy
Density 3.003 kg/m3 (1 atm, 15 °C)
1.885 g/cm3 (liquid at b.p.)
Melting point −207.15 °C (−340.87 °F; 66.00 K)
Boiling point −129.06 °C (−200.31 °F; 144.09 K)
Solubility in water
0.021 g/100 mL
Vapor pressure 44.0 atm[1](−38.5 °F or −39.2 °C or 234.0 K)[a]
Refractive index (nD)
1.0004
Structure
Molecular shape
trigonal pyramidal
Dipole moment
0.234 D
Thermochemistry
Heat capacity (C)
53.26 J/(mol·K)
Std molar
entropy (S298)
260.3 J/(mol·K)
Std enthalpy of
formation fH298)
−31.4 kcal/mol[2]
−109 kJ/mol[3]
Gibbs free energy fG)
−84.4 kJ/mol
Hazards
GHS labelling:
Hazard statements
H270, H280, H332
Precautionary statements
P220, P244, P260, P304+P340, P315, P370+P376, P403
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazard OX: Oxidizer. E.g. potassium perchlorate
1
0
0
OX
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
LC50 (median concentration)
2000 ppm (mouse, 4 h)
9600 ppm (dog, 1 h)
7500 ppm (monkey, 1 h)
6700 ppm (rat, 1 h)
7500 ppm (mouse, 1 h)[5]
NIOSH (US health exposure limits):
PEL (Permissible)
TWA 10 ppm (29 mg/m3)[4]
REL (Recommended)
TWA 10 ppm (29 mg/m3)[4]
IDLH (Immediate danger)
1000 ppm[4]
Safety data sheet (SDS) AirLiquide
Related compounds
Other anions
nitrogen trichloride
nitrogen tribromide
nitrogen triiodide
ammonia
Other cations
phosphorus trifluoride
arsenic trifluoride
antimony trifluoride
bismuth trifluoride
Related binary fluoro-azanes
tetrafluorohydrazine
Related compounds
dinitrogen difluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)
Infobox references

Nitrogen trifluoride (NF
3
) is an inorganic, colorless, non-flammable, toxic gas with a slightly musty odor. It finds increasing use within the manufacturing of flat-panel displays, photovoltaics, LEDs and other microelectronics.[6] Nitrogen trifluoride is also an extremely strong and long-lived greenhouse gas. Its atmospheric burden exceeded 2 parts per trillion during 2019 and has doubled every five years since the late 20th century.[7][8]

  1. ^ Air Products; Physical Properties for Nitrogen Trifluoride
  2. ^ Sinke, G. C. (1967). "The enthalpy of dissociation of nitrogen trifluoride". J. Phys. Chem. 71 (2): 359–360. doi:10.1021/j100861a022.
  3. ^ Inorganic Chemistry, p. 462, at Google Books
  4. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0455". National Institute for Occupational Safety and Health (NIOSH).
  5. ^ "Nitrogen trifluoride". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  6. ^ Richard Conniff (2008-11-13). "The Greenhouse Gas That Nobody Knew". Yale School of Environment.
  7. ^ Cite error: The named reference epacci was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference noaanf3 was invoked but never defined (see the help page).


Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).

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