Chlorofluoromethane
Encyclopedia
Chlorofluoromethane or Freon 31 is a gaseous mixed halomethane
(hydrochlorofluorocarbon - HCFC).
Its crystal structure is monoclinic with space group
P21 and lattice constant
s a = 6.7676, b = 4.1477, c = 5.0206 (.10-1 nm), β = 108.205°.
In altitude of 22 km traces of chlorofluoromethane occur (148 ppt)
It is used as a refrigerant
with ozone depletion potential
0.02.
Halomethane
Halomethane compounds are derivatives of methane with one or more of the hydrogen atoms replaced with halogen atoms . Halomethanes are both naturally occurring, especially in marine environments, and man-made, most notably as refrigerants, solvents, propellants, and fumigants...
(hydrochlorofluorocarbon - HCFC).
Its crystal structure is monoclinic with space group
Space group
In mathematics and geometry, a space group is a symmetry group, usually for three dimensions, that divides space into discrete repeatable domains.In three dimensions, there are 219 unique types, or counted as 230 if chiral copies are considered distinct...
P21 and lattice constant
Lattice constant
The lattice constant [or lattice parameter] refers to the constant distance between unit cells in a crystal lattice. Lattices in three dimensions generally have three lattice constants, referred to as a, b, and c. However, in the special case of cubic crystal structures, all of the constants are...
s a = 6.7676, b = 4.1477, c = 5.0206 (.10-1 nm), β = 108.205°.
In altitude of 22 km traces of chlorofluoromethane occur (148 ppt)
It is used as a refrigerant
Refrigerant
A refrigerant is a substance used in a heat cycle usually including, for enhanced efficiency, a reversible phase change from a liquid to a gas. Traditionally, fluorocarbons, especially chlorofluorocarbons, were used as refrigerants, but they are being phased out because of their ozone depletion...
with ozone depletion potential
Ozone depletion potential
The ozone depletion potential of a chemical compound is the relative amount of degradation to the ozone layer it can cause, with trichlorofluoromethane being fixed at an ODP of 1.0. Chlorodifluoromethane , for example, has an ODP of 0.055...
0.02.
External links
- Thermochemical table at chemnet.ru
- Infrared Spectrum of Chlorofluoromethane
- IARC Summaries & Evaluations: Vol. 41 (1986), Vol. 71 (1999)