Appearance Colorless gas Molar mass 102.92 g/mol Density 1.4 g/cm³ | Formula CHCl2F Boiling point 8.92 °C Melting point -135 °C | |
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Saturated refrigerant 21 dichlorofluoromethane
Dichlorofluoromethane or Freon 21 or R 21 is a halomethane or hydrochlorofluorocarbon. It is a colorless and odorless gas.
Contents
- Saturated refrigerant 21 dichlorofluoromethane
- Saturated r 21 dichlorofluoromethane specific volume
- Uses
- References
Its critical point is at 178.5 °C (451.7 K) and 5.17 MPa (51.7 bar). At temperatures from 5 K to 105 K it has one phase in the space group Pbca.
Saturated r 21 dichlorofluoromethane specific volume
Uses
Dichlorofluoromethane was used as a propellant and refrigerant, but due to its ozone depletion it has been set to be phased out. It has ozone depletion potential 0.04. Production and consumption has been since 2004 reduced to 15% of level from 1989 and it is to be phased out in 2015 according to Montreal Protocol.
References
Dichlorofluoromethane Wikipedia(Text) CC BY-SA