Perfluorobutane (PFB) is an inert, high-density colorless gas. It is a simple fluorocarbon with a n-butane skeleton and all the hydrogen atoms replaced with fluorine atoms.

Perfluorobutane
Structural formula of perfluorobutane
Ball-and-stick model of perfluorobutane
Names
Preferred IUPAC name
Decafluorobutane[1]
Other names
  • Perflubutane (USAN)
  • DFB
  • Halocarbon 610
  • R610
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.005.983 Edit this at Wikidata
EC Number
  • 206-580-3
KEGG
UNII
  • InChI=1S/C4F10/c5-1(6,3(9,10)11)2(7,8)4(12,13)14 ☒N
    Key: KAVGMUDTWQVPDF-UHFFFAOYSA-N ☒N
  • InChI=1/C4F10/c5-1(6,3(9,10)11)2(7,8)4(12,13)14
    Key: KAVGMUDTWQVPDF-UHFFFAOYAC
  • C(C(C(F)(F)F)(F)F)(C(F)(F)F)(F)F
Properties
C4F10
Molar mass 238.028 g·mol−1
Appearance Colorless gas
Density
Melting point −128 °C (−198 °F; 145 K)[3]
Boiling point −1.7 °C (28.9 °F; 271.4 K)[2]
1.5 mg/L[3]
log P 3.93[3]
Vapor pressure 330.3 kPa (47.91 psi)[3]
Viscosity 0.01218 cP[2]
Hazards
Safety data sheet (SDS) MSDS at Linde Gas
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Uses

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Perfluorobutane can replace Halon 1301 in fire extinguishers, as well as the gas component for newer generation microbubble ultrasound contrast agents.[4] Sonazoid is one such microbubble formulation developed by Amersham Health that uses perfluorobutane for the gas core.[5]

Environmental impacts

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If perfluorobutane is released to the environment, it will not be broken down in air. It is not expected to be broken down by sunlight. It will move into air from soil and water surfaces. If it is exposed to conditions of extreme heat from misuse, equipment failure, etc., toxic decomposition products including hydrogen fluoride can be produced.[6]

Perfluorobutane has an estimated lifetime greater than 2600 years and a high global warming potential value of 10,000 over 100 years.[7]

References

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  1. "Front Matter". Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013 (Blue Book). Cambridge: The Royal Society of Chemistry. 2014. p. 33. doi:10.1039/9781849733069-FP001. ISBN 978-0-85404-182-4. The prefix 'per-' is no longer recommended.
  2. 1 2 3 4 "Perfluorobutane (R610)". Gas Encyclopaedia. Air Liquide. Retrieved November 1, 2012.
  3. 1 2 3 4 "Summary Report: PERFLUOROBUTANE". Archived from the original on 2013-05-16.
  4. "Perfluorobutane Full Public Report". National Industrial Chemicals Notification and Assessment Scheme. 1996. Archived from the original on 2012-02-11.
  5. "Sonoazoid - US TIP".
  6. "Perflubutane". PubChem. Retrieved 27 December 2019.
  7. C. Smith; Z.R.J. Nicholls; K. Armour; W. Collins; P. Forster; M. Meinshausen; M.D. Palmer; M. Watanabe (2021). The Earth's Energy Budget, Climate Feedbacks, and Climate Sensitivity Supplementary Material. In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (PDF) (6 ed.). Intergovernmental Panel on Climate Change. p. 21.