Refrigerant gas R134a, which is the refrigerating media for auto air-conditioners.

Name: R-134a
Molecular weight:102.0
BP1atm,  -26.2
Critical temperature,  101.1
Critical compressive force,kPa 4070
Saturation vapor pressure25,kPa 661.9
Evaporation potential at b.p.kJ/kg: 216
ODP: 0
GWP: 0.29
ASHRAE: A1
Weight: 13.6kg (30LBS)