Dibromodifluoromethane Explained

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.

It is also formed during the fluorination of carbon tetrabromide.

Table of physical properties

Property	Value
Density, ρ, at 15°C (liquid)	2.3063g/cm^3
Critical temperature, Tc	198.3°C, 471.3K
Critical pressure, pc	4.13MPa, 40.8bar
Refractive index, n at 20°C, D	1.398
Dipole moment	0.7D
Ozone depletion potential, ODP	0.4, CCl3F is 1
Global warming potential, GWP	231, CO2 is 1^[1]

External links

• • • Photolysis of dibromodifluoromethane at 265 nm
• Raman and infrared spectra of solid dibromodifluoromethane

Notes and References

1. 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.