Octafluorocyclobutane
Encyclopedia
Octafluorocyclobutane, or perfluorocyclobutane, C4F8, is an organofluorine compound
which enjoys several niche applications. It is related to cyclobutane
by replacement of all C-H bonds with C-F bonds. Octafluorocyclobutane is produced by the dimerization of tetrafluoroethylene
and the reductive coupling of 1,2-dichloro-1,1,2,2-tetrafluoroethane.
materials and devices, octafluorocyclobutane serves as a deposition gas and etchant. It has also been investigated as a refrigerant
in specialised applications, as a replacement for ozone depleting chlorofluorocarbon
refrigerants. Exploiting its volatility and chemical inertness, octafluorocyclobutane may be found in some aerosolized foods. It is listed by the Codex Alimentarius
under number E946. It is investigated as a possible replacement for sulfur hexafluoride
as a dielectric gas
.
Organofluorine chemistry
Organofluorine chemistry describes the chemistry of organofluorine compounds, organic compounds that contain the carbon–fluorine bond. Organofluorine compounds find diverse applications ranging from oil- and water-repellents to pharmaceuticals, refrigerants and reagents in catalysis...
which enjoys several niche applications. It is related to cyclobutane
Cyclobutane
Cyclobutane is an organic compound with the formula 4. Cyclobutane is a colourless gas and commercially available as a liquefied gas. Derivatives of cyclobutane are called cyclobutanes...
by replacement of all C-H bonds with C-F bonds. Octafluorocyclobutane is produced by the dimerization of tetrafluoroethylene
Tetrafluoroethylene
Tetrafluoroethylene is a chemical compound with the formula C2F4. It is the simplest alkene fluorocarbon. This gaseous species is used primarily in the industrial preparation of polymers.-Properties:...
and the reductive coupling of 1,2-dichloro-1,1,2,2-tetrafluoroethane.
Applications
In the production semiconductorSemiconductor
A semiconductor is a material with electrical conductivity due to electron flow intermediate in magnitude between that of a conductor and an insulator. This means a conductivity roughly in the range of 103 to 10−8 siemens per centimeter...
materials and devices, octafluorocyclobutane serves as a deposition gas and etchant. It has also been investigated as a refrigerant
Refrigerant
A refrigerant is a substance used in a heat cycle usually including, for enhanced efficiency, a reversible phase change from a liquid to a gas. Traditionally, fluorocarbons, especially chlorofluorocarbons, were used as refrigerants, but they are being phased out because of their ozone depletion...
in specialised applications, as a replacement for ozone depleting chlorofluorocarbon
Chlorofluorocarbon
A chlorofluorocarbon is an organic compound that contains carbon, chlorine, and fluorine, produced as a volatile derivative of methane and ethane. A common subclass are the hydrochlorofluorocarbons , which contain hydrogen, as well. They are also commonly known by the DuPont trade name Freon...
refrigerants. Exploiting its volatility and chemical inertness, octafluorocyclobutane may be found in some aerosolized foods. It is listed by the Codex Alimentarius
Codex Alimentarius
The Codex Alimentarius is a collection of internationally recognized standards, codes of practice, guidelines and other recommendations relating to foods, food production and food safety. Its name derives from the Codex Alimentarius Austriacus...
under number E946. It is investigated as a possible replacement for sulfur hexafluoride
Sulfur hexafluoride
Sulfur hexafluoride is an inorganic, colorless, odorless, and non-flammable greenhouse gas. has an octahedral geometry, consisting of six fluorine atoms attached to a central sulfur atom. It is a hypervalent molecule. Typical for a nonpolar gas, it is poorly soluble in water but soluble in...
as a dielectric gas
Dielectric gas
A dielectric gas, or insulating gas, is a dielectric material in gaseous state. Its main purpose is to prevent or rapidly quench electric discharges. Dielectric gases are used as electrical insulators in high voltage applications, e.g...
.