R407C Refrigerant Gas

R407C refrigerant gas is a ternary mixture of R 32, R 125 and R-134a (23/25/52% by weight), and has similar operational characteristics to those of the R22. It is, however, of a zeotropic fluid, with a temperature creep (glide) not negligible equal to 7.1 K; this also adds to the disadvantage of a lower efficiency respect to R22. However, it offers the greatest ease of conversion of the plant than the other alternatives. Natural substitute of R22 is used as a fluid of “drop-in” in addition to the replacement of the mineral oil (MO) with a polyester oil (POE).

Sigle GWP Glide (K) Component  % 
R407C 1774 7,1 R134a (1,1,1,2- tetrafuoroethane (C2H2F4) 52
R125 (pentafluoroethane C2HF5) 25
R32 (difluoromethane CH2F2) 23


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Boiling point: -43,6°C/-36,6°C

PH: 49 Barg

GWP: 1774

UN Number: 3340

ADR class: 2.2 A

ADR upper number: 20

Safety group: A1/A1

R-410A, as was mentioned, it’s a refrigerant that operates at pressures more high than R407C refrigerant gas. Even if, for a systems of a given capacity, with R-410A would be required pipes of diameters inferior than those for R407C refrigerant gas, the design constraints we restrict the use of conventional copper pipes from 1 3/8 in (35 mm), easily available, for systems to R-410A

This limit value depends greatly on the conditions imposed by the specific application. This constraint can effectively limit the ability of air conditioning systems to R-410A to about 100 kW.

R407C refrigerant gas can be used instead in higher capacity systems, at least until the limitations of pressure characteristics of copper piping, commercially available, are not exceeded.

R407C refrigerant gas mini line:

  • 1L cylinder (850 g)
  • 2.5L cylinder (2000 g)

R407C refrigerant gas medi line:

  • 8L cylinder (5 kg)
  • 12.7L cylinder (10 kg)
  • 40L cylinder (38 kg)

R407C refrigerant gas maxi line:

  • 850 kg drum