Physical Properties and Application of R410A Refrigerant

commonly used refrigerants for air conditioning

At present, there are generally two refrigerants used in air conditioners in stores, one is R22 refrigerant, and the other is R410A new refrigerant. Due to the advantages of R410A new refrigerant in product use characteristics, it has become the development trend of air-conditioning refrigerant.​​

What is R410A new refrigerant?​​

R410A new refrigerant is composed of two quasi-azeotropic mixtures, mainly composed of hydrogen, fluorine, and carbon elements (expressed as HFC), and has the characteristics of stability, non-toxicity, and superior performance. At the same time, because it does not contain chlorine, it will not react with ozone, nor will it destroy the ozone layer. In addition, the performance of air conditioners using new refrigerants will also be improved to a certain extent. R410A is the most suitable refrigerant to replace R22 so far internationally recognized and has been popularized in Europe, America, Japan, and other countries.

R410A, a mixed refrigerant, is a mixture of R32 (difluoromethane) and R125 (pentafluoroethane). The advantage is that a refrigerant can be tailored according to specific user requirements, taking into account various properties, such as flammability, capacity, discharge temperature, and efficiency. R410A is colorless in appearance, not cloudy, volatile, boiling point -51.6℃, freezing point -155℃.

Main features of R410A Refrigerant

  1. Does not destroy the ozone layer. Its molecular formula does not contain chlorine, so its Ozone Depletion Potential (ODP) is 0. The Global Warming Potential (GWP) is less than 0.2. ​
  2. The toxicity is extremely low. The allowable concentration is the same as that of R22, which is 1000ppm. ​
  3. Non-flammable. The flammable polarity in the air is 0. ​
  4. High chemical and thermal stability
  5. Water solubility is almost the same as R22. ​
  6. It is a mixed refrigerant, which consists of two refrigerants.
  7. It is not compatible with mineral oil or alkyl benzene oil and is compatible with POE (ester lubricating oil) and PVE (ether lubricating oil).


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