CHF3，namely  trifluoromethane or fluoroform , No. R23 in terms of its refrigerant property, is odourless and colorless. Its molecular weight 70.01, vapor pressure 2504kPa (20℃), melting point -155℃, boiling point -84℃ and relative density 1.52(-80℃), mainly used as cold temperature refrigerant, fire extinguishing agent and the raw material for making polyvinyl fluoride.

 As a widely-used cryogenic refrigerant, CHF3 is suitable for a efficient and safe replacement of CFC-13 and R503 due to its excellent properties. It is applied in the environmental testing apparatus, frozen-drying machine, cryogenic refrigerator and cold cabinet, freezers in the blood bank, placed in the second tier or the deep cold tier of the cascade freezing systems. The last but not least, it plays a bigger role in the electronic IC manufacturing industry, used as a etchant in the wafer process.