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General Information
Item | Specification |
---|---|
ASHRAE # | R-404A |
Class | HFC |
Refrigerant Type | Blend |
Typical Lubricant | POE |
Substitutes | R-502, HCFC-22 |
Contains | HFC-125 (44%), HFC-143a (52%), HFC-134a (4%) |
Glide | Low |
Notes | Most widely used low- and medium-temperature replacement. |
Physical Properties
Property | Value |
---|---|
Chemical Name | Pentafluoroethane Trifluoroethane Tetrafluoroethane |
Chemical Notation | CF3CHF3, CF3CH3, CFcCH2F |
Molecular Weight | 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 Classification | A1 |