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Perfiuoroisobutylene

Perfiuoroisobutylene Structure
Perfiuoroisobutylene
  • CAS No.382-21-8
  • Chemical Name:Perfiuoroisobutylene
  • CBNumber:CB5851872
  • Molecular Formula:C4F8
  • Formula Weight:200.03
  • MOL File:382-21-8.mol
Perfiuoroisobutylene Property
Safety
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordDanger
  • Hazard statements H330
  • Precautionary statements P260-P271-P284-P304+P340-P310-P320-P403+P233-P405-P501

Perfiuoroisobutylene Chemical Properties,Usage,Production

  • Description Perfluoroisobutylene (PFIB) is a schedule 2A substance under the Chemical Weapons Convention, which means that while it has significant ability to be used as a chemical weapon, it also serves various other industrial uses.
  • Uses Perfluoroisobutylene or perfluoroisobutene is a monomer used in synthesis of Teflon and other polymeric materials. It is also used in etching for semiconductor fabrication, and is potentially used as a chemical warfare agent. The US Food and Drug Administration’s CFR 21 Section 173.360 allows for use of octafluorocyclobutane as a propellant and also allows for PFIB at a level of <.01% as an impurity in formulation.
  • Synthesis Reference(s) Journal of the American Chemical Society, 75, p. 2698, 1953 DOI: 10.1021/ja01107a044
  • Safety Profile A deadly poison by inhalation. Askin, eye, and mucous membrane irritant. Human acuteexposure causes marked irritation of conjunctivae, throat,and lungs. When heated to decompos
  • Environmental Fate PFIB exists as a gas in the atmosphere, and is degraded by reaction with hydroxyl radicals, with a reaction half-life of ~5.7 days. PFIB is not susceptible to significant photolysis. The Henry’s law constant of PFIB suggests volatization as an important fate process. The half lives for volatization calculated from a model lake and river were 5.6 days and 4.1 h, respectively, though a small portion will adsorb to suspended solids and sediment. PFIB can also volatize substantially from moist soils, and to a small degree from dry soils.
  • Toxicity evaluation PFIB is a strong electrophile that reacts with nucleophiles. The toxicity of PFIB may be correlated with its susceptibility to nucleophilic attack and the generation of reactive intermediates.
  • Toxics Screening Level The ITSL for perfluoroisobutylene is 0.8 μg/m3 based on a 1-hour averaging time.
Perfiuoroisobutylene Preparation Products And Raw materials
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Perfiuoroisobutylene Spectrum
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