Hi Thomas----------- R134a Tetrafluoroethane (CF/3,CH/2,F) or (Ethane1,1,1,2 - Tetrafluoro)is an HFC refrigerant.. R-134a has a boiling point of -14.9F (-26.1C).. Its auto-ignition temperature is 1418F (770C).. It's ozone depletion level is 0 . That is all the... Login to read more.