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Home >> Audi >> 2010 >> S4 Automatic DCT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1022 (Climate Control System (Precautions & Technical Data - Refrigerant R1234YF)) >> 00 General, Technical Data >> Technical And Physical Principles >> Pyrotechnical Characteristics >> Refrigerant R1234YF Physical And Chemical Characteristics

Refrigerant R1234YF Physical And Chemical Characteristics

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The following are the most important characteristics and safety precautions for refrigerant R1234yf. The complete specifications can be found in the respective safety data sheets.

Chemical formula CF3CF=CH2
Chemical designation 2, 3, 3, 3-Tetrafluorprop-1-en, HFO-1234yf
Boiling point at 1 bar (14.5 psi) -29.4 °C (-20.92 °F)
Solidification point -152.2 °C (-241.96 °F)
Critical temperature 94.7 °C (202.46 °F)
Critical pressure 32.82 bar (476 psi) 33.82 bar (476 psi)
Self-ignition point 405 °C (761 °F) at 1.02 bar (14.79 psi)
Flammability Flammable gas
  • Lower flammability limit 6.2% (volume)
  • Upper flammability limit 12.3% (volume)
Shape Compressed liquid gas
Color Colorless
Smell Faint odor