Physical and Chemical Properties

Chemical Name 2,3,3,3-Tetrafluoropropene
Chemical Formula CH2=CFCF3
Replacement For HFC R-134a and CFC R-12
Appearance Clear
Odor Slight
Boiling Point −29°C (−22°F)
Form Liquefied Gas


2,3,3,3-Tetrafluoropropene, HFO-1234yf, is a hydrofluoroolefin (HFO) with the formula CH2=CFCF3. HFO-1234yf has a global warming potential (GWP) of less than 1, compared to 1,430 for R-134a and 1 for carbon dioxide. This colorless gas is being used as a replacement for R-134a as a refrigerant in automobile air conditioners.


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