Genetron® AZ-50®

A non-ozone-depleting azeotropic mixture of HFC-125 and HFC-143A, primarily designed to replace R-502 in low- and medium-temperature commercial refrigeration applications such as supermarket display cases and ice machines.

Related TDS/SDS

General Information

  • ASHRAE #R-507A
  • ClassHFC
  • Refrigerant TypeAzeotrope
  • Typical LubricantPOE
  • SubstitutesHCFC-22, R-502
  • ContainsHFC-125 (50%), HFC-143a (50%)
  • GlideNo Glide
  • NotesSlightly higher pressures and efficiency than R-404A. Best choice for systems with flooded evaporators. EPA SNAP approved and UL Classified.

Physical Properties

  • Chemical NamePentafluoroethane, Trifluoroethane
  • Chemical NotationCF3CHF2, CF3CH3
  • Molecular Weight (lbm/lbmol)98.9
  • Boiling Point @ 1 Atm, (°F)-52.1
  • Freezing Point @ 1 Atm, (°F)-178
  • Critical Temperature (°F) (ASTM D-1321)159.11
  • Critical Pressure* (psia)537.37
  • Saturated Liquid Density @ 86°F, (lb/ft3)63.8
  • 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