Perfluoroisobutene

  • Perfluoroisobutylene
  • Octafluorisobutylen
  • PFIB
  • 1,1,3,3,3 -pentafluoro- 2 -(trifluoromethyl ) prop -1-ene

Gaseous

7 ° C

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Perfluoroisobutene ( PFIB ) is a gaseous perfluorinated alkene.

Properties

PFIB is a strong electrophile. In contact with water it is hydrolyzed rapidly, with various substances such as Fluorophosgene be formed.

Use

In the Soviet Union the use of PFIB was investigated as a chemical warfare agent. The simple preparation by heating of polytetrafluoroethylene (PTFE) and the property that masks are useless with activated carbon filter against PFIB, the gas made ​​interesting. Today PFIB is prohibited under the Chemical Weapons Convention.

Safety

PFIB is about ten times more toxic than phosgene. Inhalation may lead to pulmonary edema. PFIB may arise during the pyrolysis of PTFE and trigger the polymer fume fever.

CAS registry number PubChem Dangerous Substances Directive (67/548/EEC) Fluorine Hydrolysis
613413
de