Dibromodifluoromethane
(Redirected from Halon 1202)
Dibromodifluoromethane is a mixed halomethane. It is a colorless non-flammable liquid. Along with Halons 1211, 2402, and 1301, it is one of the most effective fire extinguishers, however, it is also very toxic. It is a class I ozone depleting substance (ODS).
Synthesis
Dibromodifluoromethane can be obtained by vapor phase bromination of difluoromethane.[1]
It is also formed during the fluorination of carbon tetrabromide.[2]
Table of physical properties
| Property | Value |
|---|---|
| Density, ρ, at 15Script error: No such module "String".°C (liquid) | 2.3063Script error: No such module "String".g/cm3 |
| Critical temperature, Tc | 198.3Script error: No such module "String".°C, 471.3Script error: No such module "String".K |
| Critical pressure, pc | 4.13Script error: No such module "String".MPa, 40.8Script error: No such module "String".bar |
| Refractive index, n at 20Script error: No such module "String".°C, D | 1.398 |
| Dipole moment | 0.7Script error: No such module "String".D |
| Ozone depletion potential, ODP | 0.4, CCl3F is 1 |
| Global warming potential, GWP | 231, CO2 is 1[3] |
References
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- ↑ Template:HSDB
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- ↑ Hodnebrog, Ø., M. Etminan, J. S. Fuglestvedt, G. Marston, G. Myhre, C. J. Nielsen, K. P. Shine, and T. J. Wallington (2013), ‘Global warming potentials and radiative efficiencies of halocarbons and related compounds: A comprehensive review,’ Reviews of Geophysics, vol. 51, pp. 300-378, doi:10.1002/rog.20013.
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External links
- International Chemical Safety Card 1419
- Script error: No such module "citation/CS1".
- Photolysis of dibromodifluoromethane at 265 nm
- Raman and infrared spectra of solid dibromodifluoromethane