Solstice®ze

Solstice® ze is an energy-efficient, ultra-low GWP refrigerant alternative to R-134a in air-cooled and water-cooled chillers for supermarkets and commercial buildings, as well as in other medium temperature applications such as heat pumps, refrigerators, vending machines and CO2 cascade systems in commercial refrigeration. Its GWP of less than 1 is 99.9% lower than R-134a.

Related TDS/SDS

General Information

  • ASHRAE #R-1234ze
  • ClassHydro-fluoro-olefin (HFO)
  • Refrigerant TypePure fluid
  • Typical LubricantPOE Oil
  • SubstitutesR-134a
  • Glide0°F
  • GWP<1

Physical Properties

  • Chemical NameTrans-1,3,3,3-tetrafluoroprop-1-ene
  • Chemical NotationCHF=CHCF3
  • Molecular Weight (lbm/lbmol)114
  • Boiling Point @ 1 Atm, (°F)-2.2
  • Critical Temperature (°F) (ASTM D-1321)228.9
  • Critical Pressure* (psia)527.2
  • Saturated Liquid Density @ 86°F, (lb/ft3)71.6
  • Specific Heat of Liquid @ 86°F, (Btu/lb•°F)0.335
  • Specific Heat of Vapor @ Constant Pressure* (Cp), @ 86° and 1 Atm, (Btu/lb•°F)0.214
  • Flammable range, %vol. in air (Based on ASHRAE Standard 34 with Match Ignition)7% - 12% (by volume)
  • ANSI/ASHRAE Standard 34-1992 Safety Group ClassificationA2L