R502 refrigerant (R-502,Freon502,Freon 502,Genetron 502), as a widely used cryogenic refrigerant, is mainly used in cold storage, commercial refrigeration, supermarket display cabinets, food refrigeration equipment, ice cream machines, marine refrigeration equipment, transportation refrigeration, industrial refrigeration, low-temperature refrigerators, freezing condensing units and other refrigeration equipment. R502 refrigerant is a low-temperature refrigerant with excellent refrigeration performance such as high refrigeration capacity and fast refrigeration speed. Can be used as food display, food storage, refrigeration, ice cream, refrigerator, low-temperature refrigerator and low-temperature refrigeration compressorrefrigerant。Since R502 contains non-environmentally friendly azeotropic refrigerants of CFCs and HCFC substances that destroy the ozone layer, most countries in the world currently ban or restrict the use of R502 refrigerant in initial installation on new refrigeration equipment and re-addition during after-sales equipment maintenance.
R502 parameter
| Name: R502, HCFC/CFC-502 | CAS Number: 75-45-6/76-15-3 |
| Classification: Mixture | Molecular weight: 111.6 |
| Molar mass: 111.6g/mol | Critical temperature:80℃ |
| Critical pressure: 3.9MPa | Critical density:0.5668g/cm3 |
Boiling point: -45.6℃ | Flammability: none |
R502 Composition
Mole percentage: R22 accounts for 62.9994%, R115 accounts for 37.0006%
Mass percentage:R22accounting for 48.8%,R115Accounting for 51.2%
R502 Temperature and pressure parameters
Evaporation temperature (℃) | -25 | -30 | -35 | -40 | -45 |
Pressure (Kpa) | 141.2 | 98 | 61.8 | 29.4 | 2.94 |
Condensation temperature (℃) | 58 | 58 | 57 | 47 | 37 |
Pressure (Kpa) | 235.4 | 235.4 | 232.4 | 185.3 | 146.1 |
compression ratio | 10.2 | 12.4 | 14.3 | 14.9 | 15.0 |
R502 Quality Indicator
appearance |
| Colorless and non-turbid |
smell |
| There is no difference in stench |
moisture is less than or equal to | % | 0.002 |
Acidity ≤ (calculated as HCI) | % | 0.0001 |
Evaporation residue ≤ | % | 0.01 |
Chloride (Cl-) test ≠ | % | ≦0.0001% |
R502 Packaging and Storage
For cylinder packaging, the filling factor shall not exceed 0.9kg/L.
Must be stored in a cool, dry and ventilated place to avoid sun and rain.
