1,1-Difluoroethane

1,1-Difluoroethane[1]
Difluoroethane
Difluoroethane
Difluoroethane
Difluoroethane
Difluoroethane
Names
Preferred IUPAC name
1,1-Difluoroethane
Other names
  • Difluoroethane
  • Freon 152a
  • Ethylidene difluoride
  • Ethylidene fluoride
  • HFC-152a
  • R-152a
  • DFE
  • Tinned Wind
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.000.788 Edit this at Wikidata
RTECS number
  • KI1410000
UNII
  • InChI=1S/C2H4F2/c1-2(3)4/h2H,1H3 checkY
    Key: NPNPZTNLOVBDOC-UHFFFAOYSA-N checkY
  • InChI=1/C2H4F2/c1-2(3)4/h2H,1H3
    Key: NPNPZTNLOVBDOC-UHFFFAOYAM
  • FC(F)C
Properties
C2H4F2
Molar mass 66.05 g/mol
Density 900 g/L @ 25 °C
Melting point −117 °C (−179 °F; 156 K)
Boiling point −24.7 °C (−12.5 °F; 248.5 K)
Critical point (T, P) 113.45 °C
0.54% @ 0 °C
Vapor pressure
  • 536 kPa (4020 mmHg) @ 21.1 °C
  • 510 kPa (5.1 bar) @ 20 °C
Viscosity 8.87 μPa·s (0.00887 cP) @ 25 °C
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Extremely flammable
GHS labelling:
GHS02: Flammable
Danger
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g. propaneInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
4
0
Safety data sheet (SDS) SDS for 1,1-difluoroethane
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 ?)

1,1-Difluoroethane, or DFE, is an organofluorine compound with the chemical formula C2H4F2. This colorless gas is used as a refrigerant, where it is often listed as R-152a (refrigerant-152a) or HFC-152a (hydrofluorocarbon-152a). It is also used as a propellant for aerosol sprays and in gas duster products. As an alternative to chlorofluorocarbons, it has an ozone depletion potential of zero, a lower global warming potential (124) and a shorter atmospheric lifetime (1.4 years).[2][3]

  1. ^ 1,1-Difluoroethane at Sigma-Aldrich
  2. ^ "Changes in Atmospheric Constituents and in Radiative Forcing" (PDF). Cambridge University Press. 2007. p. 212. Retrieved 11 May 2017. 18 February 2019
  3. ^ "Global Warming Potentials of ODS Substitutes". U.S. Environmental Protection Agency. 2010. Archived from the original on 16 October 2010. Retrieved 20 September 2010.