Chlorofluoromethane or Freon 31 is the

hydrochlorofluorocarbon Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) are fully or partly halogenated hydrocarbons that contain carbon (C), hydrogen (H), chlorine (Cl), and fluorine (F), produced as volatile derivatives of methane, ethane, and pr ...

(HCFC) with the formula CH₂ClF. It is a colorless, odorless, flammable gas.

Uses

Pyrolysis of a mixture of

dichlorofluoromethane Dichlorofluoromethane or Freon 21 or R 21 is a halomethane or hydrochlorofluorocarbon with the formula CHCl2F. It is a colorless and odorless gas. It is produced by fluorination of chloroform using a catalyst such as antimony trifluoride: :CHCl ...

and chlorofluoromethane gives

hexafluorobenzene Hexafluorobenzene, HFB, , or perfluorobenzene is an organic, aromatic compound. In this derivative of benzene all hydrogen atoms have been replaced by fluorine atoms. The technical uses of the compound are limited, although it is recommended as ...

: :3 CHCl₂F + 3 CH₂ClF → C₆F₆ + 9 HCl It was used as a refrigerant and has an

ozone depletion potential The ozone depletion potential (ODP) of a chemical compound is the relative amount of degradation to the ozone layer it can cause, with trichlorofluoromethane (R-11 or CFC-11) being fixed at an ODP of 1.0. Chlorodifluoromethane (R-22), for exampl ...

of 0.02.

Additional data

Its crystal structure is

monoclinic In crystallography, the monoclinic crystal system is one of the seven crystal systems. A crystal system is described by three vectors. In the monoclinic system, the crystal is described by vectors of unequal lengths, as in the orthorhombic s ...

with

space group In mathematics, physics and chemistry, a space group is the symmetry group of an object in space, usually in three dimensions. The elements of a space group (its symmetry operations) are the rigid transformations of an object that leave it uncha ...

P2₁ and

lattice constant A lattice constant or lattice parameter is one of the physical dimensions and angles that determine the geometry of the unit cells in a crystal lattice, and is proportional to the distance between atoms in the crystal. A simple cubic crystal has o ...

s ''a'' = 6.7676, ''b'' = 4.1477, ''c'' = 5.0206 (0.10⁻¹ nm), β = 108.205°. At an altitude of 22 km, traces of chlorofluoromethane occur (148 ppt).

References

External links

Thermochemical table at chemnet.ru

Infrared Spectrum of Chlorofluoromethane
* IARC Summaries & Evaluations

Hydrochlorofluorocarbons Halomethanes Refrigerants IARC Group 3 carcinogens {{organohalide-stub