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Genetron^® 404A

A non-ozone-depleting replacement for R-502 in low- and medium-temperature commercial refrigeration systems.

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General Information

ASHRAE #R-404A
ClassHFC
Refrigerant TypeBlend
Typical LubricantPOE
SubstitutesR-502, HCFC-22
ContainsHFC-125 (44%), HFC-143a (52%), HFC-134a (4%)
GlideLow
NotesMost widely used low- and medium-temperature replacement.

Physical Properties

Chemical NamePentafluoroethane Trifluoroethane Tetrafluoroethane
Chemical NotationCF₃CHF₃, CF₃CH₃, CF_cCH₂F
Molecular Weight (lbm/lbmol)97.6
Boiling Point @ 1 Atm, (°F)-51.2
Critical Temperature (°F) (ASTM D-1321)161.88
Critical Pressure* (psia)540.82
Saturated Liquid Density @ 86°F, (lb/ft³)63.6
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)0.19
Flammable range, %vol. in air (Based on ASHRAE Standard 34 with Match Ignition)None
ANSI/ASHRAE Standard 34-1992 Safety Group ClassificationA1