ORAFON R-404a

PENTAFLUOROETHANE (HFC-125) (C2HF5) 44%  / 1,1,1-TRIFLUOROETHANE (HFC-143a) (C2H3F3) 52%  / 1,1,1,2-TETRAFLUOROETHANE (HFC-134a) (C2H2F4) 4%
CAS Number  :  354-33-6 (HFC-125) / 420-46-2 (HFC-143a) / 811-97-2 (HFC-134a)
Molecular Mass (g/mol of blend)  :  97.60
Normal Boiling Point  :  -49.9 °F / -45.5 °C
Ozone Depletion Potential(ODP) (CFC-11 = 1.0)  :  0
Global Warming Potential (GWP) (CO2 = 1.0) (100 year)  :  3,943

ORAFON R-404a is non ozone depleting, near azeotropic blend of HFC refrigerants R-125, R-143a and R-134a. They formulated to match the properties of R-502, making it useful for a variety of medium and low temperature refrigeration applications. R-404a has been approved by many refrigeration compressor and system manufacturers for use in new refrigeration equipment such as food display and storage cases, cold storage rooms, ice machines, process refrigeration, Industrialrefrigeration and Transport refrigeration (refrigerated containers, trucks, vessels…)

ORAFON R-404a thatnear azeotropic. To be better to charge it as liquid to prevent fractionation (changes in the designed refrigerant composition) but it can also be charged as gas. Insituations where vapor would normally be charged into a system, a valve should be installed in the charging line to flash liquid from the cylinder in to vapor.

ORAFON R-404a requires Polyolester (POE) lubricant to ensure complete miscibility between oil and refrigerant. Miscibility is important for oil return to the compressor, especially in large systems with long runs of piping.

And more…