Genetron® 12

U.S. production stopped December 31, 1995. A widely used refrigerant in reciprocating and rotary type equipment and in some centrifugal designs.

Related TDS/SDS

General Information

  • ASHRAE #R-12
  • ClassCFC
  • Refrigerant TypePure Fluid
  • Typical LubricantMineral Oil
  • SubstitutesR-134a
  • NotesU.S. production stopped December 31, 1995. Consider R-134a, R-401A, R-401B and R-409A. Chlorofluorocarbon (CFC) products such as R-12 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.

Physical Properties

  • Chemical NameDichlorodifluoromethane
  • Chemical NotationCCl2F2
  • Molecular Weight (lbm/lbmol)120.9
  • Boiling Point @ 1 Atm, (°F)-21.6
  • Freezing Point @ 1 Atm, (°F)-252
  • Critical Temperature (°F) (ASTM D-1321)233.55
  • Critical Pressure* (psia)599.89
  • Saturated Liquid Density @ 86°F, (lb/ft3)81
  • Specific Heat of Liquid @ 86°F, (Btu/lb•°F)0.24
  • Specific Heat of Vapor @ Constant Pressure* (Cp), @ 86° and 1 Atm, (Btu/lb•°F)0.13
  • Flammable range, %vol. in air (Based on ASHRAE Standard 34 with Match Ignition)None
  • ANSI/ASHRAE Standard 34-1992 Safety Group ClassificationA1