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R404a Refrigerant

Freon™ 404A (R-404A) is a blended hydrofluorocarbon (HFC) refrigerant comprised of R-125, R-134a, and R-143a. It was designed to replace R-502 and R-22 used in commercial refrigerator equipment for low and medium temperature ranges. Its properties make it ideal for use in display cases, refrigerated vehicles, ice makers, and other applications.

SKU: r404a-13 Categories: , Tag:

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. It possesses outstanding properties as a refrigerant for showcases, refrigerated vehicles, ice makers, and other equipment.

R404a is an HFC mix refrigerant gas. It’s mixture consisting of R125 (44%), R143a (52%) and R134a (4%).

R404a Refrigerant Gas Properties:

  1. Appearance: Compressed liquefied gas.
  2. Colour: Clear, colorless
  3. Odour: Slight ethereal
  4. pH: Not available.
  5. Melting point: No data available.
  6. Boiling point: -47.2°C to -46.4°C
  7. Density: 06 g/cm3 at 20°C
  8. Vapour Density: 42 approx, at bubble point temperature. (Air= 1)
  9. Vapour pressure: 8270 mm Hg at 20°C
  10. Partition coefficient (n -octanol/water): Log pow = 1.740 (R143a, NLM Dataset);
  11. Log pow = 2.3 (R125); Log pow = 1.274 (R134a, HSDB).
  12. Solubility in water: Insoluble in water;
  13. Soluble in: chlorinated solvents, alcohols, esters.
  14. Flash point: No data available.
  15. Critical Temperature: 1°C
  16. Critical Pressure: 74 Mpa
  17. Flammability: Not flammable.
  18. Oxidising properties: Non oxidizer.
Weight 15 kg


Chemical Formula

CHF2CF3/CH3CF3/CH2FCF3 (44/52/4% by weight)

Molecular Weight


Boiling Point @ 1 Atm

–46.45 °C (–51.62 °F)

Critical Temperature

72.07 °C (161.73 °F)

Critical Pressure

3731.5 kPa (abs) (541.2 psia)

Critical Density

484.5 kg/m3 (30.23 lb/ft3)

Critical Volume

0.00206 m3/kg (0.0331 ft3/lb)


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