Briton Refrigerant R404a
Briton R404A Refrigerant Gas is an almost azeotropic mixture of HFC refrigerants, with zero ozone layer depletion, used in new refrigeration equipment at mid-range and low temperatures. It is also an indirect replacement (retrofit), in equipment that previously operated with R-502 and its HCFC replacements such as R-408A, DI-44, and HP80.
It is mainly used in new installations with mid-range and low refrigeration temperatures. The theoretical cooling capacity is 5% lower than R-502 at evaporation temperatures of -40ºC. The coefficient of performance (COP) is between 5 and 8% lower than R-502. As superheating increases, R-404A’s COP might become higher than that of R-502. In the case of R-502 retrofits and its HCFC replacements (R-408A, DI-44), 95% of the original mineral oil or alkylbenzene must be replaced by a polyolester oil, the dryer filter and expansion valve changed, rubber O-rings replaced with plastic ones and, occasionally, the size of the condenser must be increased. When it is used as a retrofit for R-22, the safety valves also need to be changed along with any other elements calibrated to R-22 pressures.
Download Briton Refrigerant R404a Gas Material Safety Data Sheet (MSDS).
|Product Information||Product Specification||Material Safety Data Sheet (MSDS)|
R-404A is a pseudo-azeotropic mixed refrigerant composed of the three ingredients R-125, R-134a, and R-143a, and was developed as a substitute refrigerant for R-502 and R-22, used in commercial refrigerator equipment for low and medium temperature ranges.
|Contains||HFC-125 (44%), HFC-143a (52%), HFC-134a (4%)|
|Notes||Most widely used low- and medium-temperature replacement.|
Physical Properties of Briton Refrigerant R404a (Pentafluoroethane, Trifluoroethane, Tetrafluoroethane)
|Chemical Name||Pentafluoroethane Trifluoroethane Tetrafluoroethane|
|Chemical Notation||CF3CHF3, CF3CH3, CFcCH2F|
|Boiling Point (°C)||-46.2|
|Freezing Point (°C)||Average -117.5|
|Critical Temperature (°C)||72.2|
|Critical Pressure (bar)||37.29|
|Liquid Density (kg/m³) 0°C||1150.01|
|Specific Heat of Liquid @ Constant Pressure @ 25°C (kJ/(kg.K))||1.5423|
|Specific Heat of Vapor @ Constant Pressure @ 25°C (kJ/(kg.K))||1.2214|
|Vapour Density (kg/m³) 25°C||3.99|
|Practical Limit (kg/m³)||0.52|
|Flammable range, %vol. in air (Based on ASHRAE Standard 34 with Match Ignition)||None|
|ANSIASHRAE Standard 36-1992 Safety Group Classification||A1|