1,2-Dibromotetrafluoroethane (C
2Br
2F
4) is a
haloalkane. It is also known under codenames R-114B2 and Halon 2402. It is a colorless liquid with a boiling point of 47.2 °C. R-114B2 is occasionally used in
fire suppression system
Fire suppression systems are used to extinguish, control, or in some cases, entirely prevent fires from spreading or occurring. Fire suppression systems have an incredibly large variety of applications, and as such, there are many different types ...
s. It is highly volatile, passes through soil to air, and can be detected in the parts-per-quadrillion range.
Since July 1, 1994, the
Montreal Protocol
The Montreal Protocol is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. It was agreed on 16 September 1987, and entered into force o ...
required all nations or parties that are a party to it to eliminate the production, consumption, and trade of ozone-depleting substances (ODS). Dibromotetrafluoroethane's high ozone-depleting potential (ODP) caused it to be identified as an ODS. Dibromotetrafluoroethane has been prohibited in Canada since July 1, 1994, "except for essential uses or for use as analytical standards".
On November 8, 2008, an
accident aboard Russian submarine K-152 ''Nerpa'' involving the unintentional activation of a fire suppressant system loaded with R-114B2 resulted in the death of 20 people.
[ Retrieved November 18, 2008.]
Notes
Fire suppression agents
Organobromides
Organofluorides
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