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CAS number 124-73-2 YesY
PubChem 31301
ChemSpider 29041
Jmol-3D images Image 1
Molecular formula C2Br2F4
Appearance Colorless liquid
Density 2180 kg/m3 at 20°C
Boiling point 47.3 °C (117.1 °F; 320.4 K)
Solubility in water not soluble in water
MSDS External MSDS
R-phrases R36 R38
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
Infobox references

1,2-Dibromotetrafluoroethane (C2Br2F4) 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 systems. It is also used as a tracer chemical in Praxair's Seep Sense leak detection system. It is highly volatile, passes through soil to air, and allows detection in the parts-per-quadrillion range.[2]

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.[3]


  1. ^ "Chemical datasheet for dibromotetrafluoroethane". Cameo Chemicals. National Oceanic and Atmospheric Administration.  Retrieved November 18, 2008.
  2. ^ Patent #4725551 and Patent #6817227
  3. ^ Eschel, David (November 11, 2008). "Fire on Board the Russian Navy Akula II Nuclear Submarine kills Twenty Russian Sailors". Defense Update.  Retrieved November 18, 2008.