Fluorodichloromethane, Monofluorodichloromethane, Dichloromonofluoromethane, Freon 21, Refrigerant 21, R 21, HCFC 21, Algofrene Type 5, Arcton 7, Halon 112, UN 1029, Genetron 21
|Molar mass||102.92 g/mol|
|Density||1.405 g/cm3 at 9 °C
1.366 kg/m3 at 25 °C
|Melting point||−135 °C (−211 °F; 138 K)|
|Boiling point||8.92 °C (48.06 °F; 282.07 K)|
|9.420 g/l at 30 °C|
|Vapor pressure||160 kPa|
|Main hazards||Dangerous for the environment (N)|
|Flash point||nonflammable |
|522 °C (972 °F; 795 K)|
|US health exposure limits (NIOSH):|
|TWA 1000 ppm (4200 mg/m3)|
|TWA 10 ppm (40 mg/m3)|
IDLH (Immediate danger)
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
|what is: / ?)(|
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.
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.
- International Chemical Safety Card 1106
- "NIOSH Pocket Guide to Chemical Hazards #0197". National Institute for Occupational Safety and Health (NIOSH).
- Termochemistry data at chemnet.ru
- Entry at Air Gas Liquide Encyclopaedia