Perbromyl fluoride
Other names
Bromine fluoride trioxide
3D model (JSmol)
  • InChI=1S/BrFO3/c2-1(3,4)5
  • F[Br](=O)(=O)=O
Molar mass 146.899 g·mol−1
Appearance colorless gas
Melting point −9 °C (16 °F; 264 K)
reacts with water
Related compounds
Related compounds
Periodyl fluoride
Perchloryl fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Perbromyl fluoride is an inorganic compound of bromine, fluorine, and oxygen with the chemical formula BrO3F.[1][2]


Synthesis if perbromyl fluoride is by the effect of antimony pentafluoride on a solution of potassium perbromate in hydrofluoric acid:[3]

KBrO4 + 2SbF5 + 3HF → BrO3F + K[SbF6] + H[SbF6]•H2O

Physical properties

Perbromyl fluoride forms a colorless gas that is stable in the absence of moisture.[4]

Chemical properties

Perbromyl fluoride reacts with water:

BrO3F + H2O → HBrO4 + HF


  1. ^ Johnson, Gerald K.; O'Hare, P. A. G.; Appelman, Evan H. (1972). "Perbromyl fluoride". 11 (4). NIST: 800–802. doi:10.1021/ic50110a028. Retrieved 5 June 2023. ((cite journal)): Cite journal requires |journal= (help)
  2. ^ Appleman, Evan H.; Studier, Martin H. (July 1969). "Perbromyl fluoride". Journal of the American Chemical Society. 91 (16): 4561–4562. doi:10.1021/ja01044a049. ISSN 0002-7863. Retrieved 5 June 2023.
  3. ^ Steudel, Ralf (20 April 2011). Chemistry of the Non-Metals: With an Introduction to Atomic Structure and Chemical Bonding. Walter de Gruyter. p. 265. ISBN 978-3-11-083082-8. Retrieved 5 June 2023.
  4. ^ U. S. Atomic Energy Commission Division of Plans and Atomic Energy Research: Life and Physical Sciences, Reactor Development, Waste Management. U.S. Government Printing Office. 1970. p. 10. Retrieved 5 June 2023.