R513A Opteon™ XP10

R-513A (Opteon™ XP10)

Low GWP (631) A1 safety class alternative to R-134a for use in medium and low temperature refrigeration and heat pumps.

Features and Benefits

  • 56% Lower GWP than R-134a – Long term sustainable and compliant with F‑Gas legislation.
  • Similar cooling performance to R-134a – System design similar to R-134a.
  • Azeotropic refrigerant blend – Can be used in direct expansion and flooded systems. Neglible temperature glide.
  • A1 (non-flammable) safety class – Ideal retrofit candidate for R134a.
  • Boiling point -30°C – Positive suction pressure in low temperature applications.

Packaging and Supply

  • Climalife supply R-513A in 12kg, 21kg, or 57kg returnable cylinders or 840kg drums.
  • Conforms to AHRI 700-2016 specifications.

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.

How does R-513A compare to R-134a?

R-513A has very similar cooling performance to R-134a with a similar energy efficiency.

Full theoretical performance comparisons at customer specified conditions are available from Climalife on request.




R-1234yf/HFC-134a - 56/44% by mass

Chemical Formula



Molecular Mass


Boiling Point (at 1 Atmosphere)


Dew Point (at 1 Atmosphere)


Saturated Liquid Density at 25°C

1134.2 kg/m³

Saturated Vapour Density at 1.013bar

5.677 kg/m³

Saturated Liquid Pressure at 25°C

7.135 bar

Saturated Liquid Pressure at 50°C

13.775 bar

Critical Temperature


Critical Pressure

36.478 bar

Critical Density

490.4 kg/m³

Critical Volume

0.00204 m³/kg

Latent Heat of vapourisation at 1.013bar

194.8 kJ/kg

Thermal Conductivity of Liquid at 25°C

69.9 mW/(m.K)

Thermal Conductivity of Vapour at 25°C & 1.013bar

13.7 mW/(m.K)

Surface tension at 25°C

6.72 mN/m

Viscosity of Liquid at 25°C

0.166 mPa.s

Viscosity of Vapour at 25°C & 1.013bar

0.012 mPa.s

Specific heat of liquid at 25°C

1.412 kJ/(kg.K)

Specific heat of vapour at 25°C and 1.013bar

0.8811 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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