Genetron® 502

U.S. production stopped December 31, 1995. An azeotropic mixture used in low-and medium-temperature refrigeration applications.

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General Information

Item Specification
ASHRAE # R-502
Typical Lubricant Mineral Oil
Contains HCFC-22, CFC-115
Notes U.S. production stopped December 31, 1995. Chlorofluorocarbon (CFC) products such as R-500 are no longer manufactured but are still used in a variety of systems, and service refrigerant is sometimes still available in reclaimed form in some developed countries including the United States. In countries operating under “Article 5″ provisions of the Montreal protocol agreement, CFCs in virgin form are still available, although these countries are now beginning to implement CFC phase-outs. Consider R-402A, R-402B, R-408A, R-404A, R-507

Physical Properties

Property Value
Chemical Name Chlorodifluoromethane, Chloropentafluoroethane
Chemical Notation CHClF2, CClF2 CF3
Molecular Weight 111.6
Boiling Point (°C) -45.2
Freezing Point (°C) -17.8
Critical Temperature (°C) 80.2
Critical Pressure (bar) 40.17
Liquid Density (kg/m³) 0°C 1320.34
Specific Heat of Liquid @ Constant Pressure @ 25°C (kJ/(kg.K)) 1.1967
Specific Heat of Vapor @ Constant Pressure @ 25°C (kJ/(kg.K)) 0.8991
Vapour Density (kg/m³) 25°C 4.56
GWP 4657
ODP 0.25
ATEL/ODL (kg/m³) 0.33
Practical Limit (kg/m³) 0.45
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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