R-404A is a blend refrigerant of HFC125, HFC-134a and HFC-143. AlliedSigal Inc.??s patent number is AZ-50. It is a long life substitute of R502, harmless to Ozone. It is mainly used in Iow and middle central commercial air re-frigeration system.
Formula: OH F2CF3/CF3OH2F/OH3CF3
Boiling Point (101.3KPa, ~C): -46.1
Freezing Point (~C): --
Critical Temperature (~C): 72.4
Critical Pressure (KPa): 3688.7
Liquid Density (kg/m3): 1017.2