Physical Properties
Chemical Name Difluoromethane Pentafluoroethane Tetrafluoroethane
Chemical Notation Ch2f/ Cf3chf2/ Cf3ch2f
Molecular Weight 86.2
Boiling Point @ 1 Atm, ( ° F) -46.5
Freezing Point @ 1 Atm, ( ° F) -256
Critical Temperature ( ° F) ( Astm D-1321) 186.86
Critical Pressure* ( Psia) 671.49
Saturated Liquid Density @ 86° F, ( Lb/ Ft3) 69.6
Specific Heat Of Liquid @ 86° F, ( Btu/ Lb• ° F) 0.38
Specific Heat Of Vapor @ Constant Pressure* ( Cp) , @ 86° And 1 Atm, ( Btu/ Lb• ° F) 0.18
Flammable Range, % Vol. In Air ( Based On Ashrae Standard 34 With Match Ignition) † † None
Ansiashrae Standard 36-1992 Safety Group Classification A1
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