2,3,3,3-Tetrafluoropropene

2,3,3,3-Tetrafluoropropene
2,3,3,3-Tetrafluoropropene molecule
Names
Preferred IUPAC name
2,3,3,3-Tetrafluoroprop-1-ene
Other names
HFO-1234yf; R1234yf; R-1234yf; 2,3,3,3-Tetrafluoropropylene
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.104.879 Edit this at Wikidata
EC Number
  • 468-710-7
UNII
UN number 3161
  • InChI=1S/C3H2F4/c1-2(4)3(5,6)7/h1H2 checkY
    Key: FXRLMCRCYDHQFW-UHFFFAOYSA-N checkY
  • InChI=1/C3H2F4/c1-2(4)3(5,6)7/h1H2
    Key: FXRLMCRCYDHQFW-UHFFFAOYAB
  • C=C(F)C(F)(F)F
  • FC(=C)C(F)(F)F
Properties
C3H2F4
Molar mass 114 g/mol
Appearance Colorless gas
Density 1.1 g/cm3 at 25 °C (liquid); 4 (gas, relative, air is 1)
Boiling point −30 °C (−22 °F; 243 K)
198.2 mg/L at 24 °C, 92/69/EEC, A.6
log P 2.15, n-octanol/water, 92/69/EEC, A.8
Vapor pressure 6,067 hPa at 21.1 °C; 14,203 hPa at 54.4 °C
Hazards
GHS labelling:
GHS02: Flammable
H220
P210, P260, P281, P308+P313, P410+P403
405 °C (761 °F; 678 K)
Explosive limits 6.2% vol.; 12.3% vol.
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

2,3,3,3-Tetrafluoropropene, HFO-1234yf, is a hydrofluoroolefin (HFO) with molecular formula CH2=CFCF3. Its primary application is as a refrigerant with low global warming potential (GWP).[1][2]

As a refrigerant, it is designated R-1234yf[1] and marketed under the names Opteon YF by Chemours and as Solstice YF by Honeywell.[3] R-1234yf is also a component of zeotropic refrigerant blend R-454B.

HFO-1234yf has a GWP less than carbon dioxide,[4][2] itself 1,430 times less potent than R-134a.[5] For this reason, 2,3,3,3‑tetrafluoropropene is the pre-eminent replacement for R-134a in vehicular air conditioners. As of 2022, 90% of new U.S. vehicles are estimated to use HFO-1234yf.[6] Unlike previous vehicular refrigerants, 2,3,3,3‑tetrafluoropropene is flammable, but does not increase fire risk in internal combustion engines.[citation needed] One drawback is it breaks down into short-chain perfluorinated carboxylic acids (PFCAs), which are persistent organic pollutants.[7]

  1. ^ a b Sciance, Fred (October 29, 2013). "The Transition from HFC- 134a to a Low -GWP Refrigerant in Mobile Air Conditioners HFO -1234yf" (PDF). General Motors Public Policy Center. Retrieved 1 August 2018.
  2. ^ a b Cite error: The named reference CP2014 was invoked but never defined (see the help page).
  3. ^ "Honeywell and Chemours Announce New Manufacturing Plants for HFO 1234yf". Aspen Refrigerants. June 12, 2017. Archived from the original on 4 August 2020. Retrieved 26 July 2018.
  4. ^ Cite error: The named reference WMO was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference AR4 was invoked but never defined (see the help page).
  6. ^ "StackPath". www.vehicleservicepros.com. 23 March 2022. Archived from the original on 2022-03-26. Retrieved 2022-05-28.
  7. ^ Wang, Ziyuan; Wang, Yuhang; Li, Jianfeng; Henne, Stephan; Zhang, Boya; Hu, Jianxin; Zhang, Jianbo (30 January 2018). "Impacts of the Degradation of 2,3,3,3-Tetrafluoropropene into Trifluoroacetic Acid from Its Application in Automobile Air Conditioners in China, the United States, and Europe". Environmental Science & Technology. 52 (5): 2819–2826. Bibcode:2018EnST...52.2819W. doi:10.1021/acs.est.7b05960. PMID 29381347.