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 |
EC Number |
|
PubChem CID
|
|
UNII | |
UN number | 3161 |
CompTox Dashboard (EPA)
|
|
| |
| |
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: | |
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).
|
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]
CP2014
was invoked but never defined (see the help page).WMO
was invoked but never defined (see the help page).AR4
was invoked but never defined (see the help page).