Ultra low GWP (4.5) low pressure refrigerant for use in low pressure chillers where R-123 may have been used in the past or for organic rankine cycle applications.

Features and Benefits

  • Ultra Low GWP – Long term sustainable and compliant with F-Gas legislation
  • Excellent performance
  • Single component refrigerant – can be used in direct expansion and flooded systems. No temperature glide.

Packaging and Supply

  • Climalife supply R-1233zd in 14kg or 70kg returnable cylinders.
  • Conforms to AHRI 700-2016 specifications.
  • R-1233zd is a low pressure refrigerant and may require additional equipment to remove from the cylinder in cool ambient conditions.

Why Choose Climalife?

Climalife are a key player in the distribution of refrigerants and other climate control products, with a nationwide distribution network and product knowledge that is second to none.



Chemical Formula


Molecular Mass


Boiling Point (at 1 Atmosphere)


Dew Point (at 1 Atmosphere)


Saturated Liquid Density at 25°C

1262.8 kg/m³

Saturated Vapour Density at 1.013bar

5.704 kg/m³

Saturated Liquid Pressure at 25°C

1.298 bar

Saturated Liquid Pressure at 50°C

2.933 bar

Critical Temperature


Critical Pressure

36.237 bar

Critical Density

480.2 kg/m³

Critical Volume

0.00208 m³/kg

Latent Heat of vapourisation at 1.013bar

194.6 kJ/kg

Thermal Conductivity of Liquid at 25°C

82.7 mW/(m.K)

Thermal Conductivity of Vapour at 25°C & 1.013bar

10.6 mW/(m.K)

Surface tension at 25°C

14.56 mN/m

Viscosity of Liquid at 25°C

0.286 mPa.s

Viscosity of Vapour at 25°C & 1.013bar




0.010 mPa.s

Specific heat of liquid at 25°C

1.216 kJ/(kg.K)

Specific heat of vapour at 25°C and 1.013bar



0.8197 kJ/(kg.K)

Cp/Cv ratio at 25° and 1.013 bar


Lower Fammability Limit (LFL) in air (EN 378)


Flash Point


ISO 817 / ASHRAE 34 Safety Classification


PED Fluid Group


Ozone Depletion Potential (ODP)


Global Warming Potential (GWP) IPCC AR4/IPCC AR5


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