Perfluoromethylcyclohexane

Perfluoromethylcyclohexane is a fluorocarbon liquid—a perfluorinated derivative of the hydrocarbon methylcyclohexane. It is chemically and biologically inert.

Perfluoromethylcyclohexane
Names
IUPAC name
undecafluoro(trifluoromethyl)cyclohexane
Other names
Flutec PP2
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.005.976
EC Number
  • 206-386-9
UNII
Properties
C7F14
Molar mass 350.055 g·mol−1
Appearance Clear, colorless liquid
Density 1.788 g/mL
Melting point −37 °C (−35 °F; 236 K)
Boiling point 76 °C (169 °F; 349 K)
10 ppm
Hazards
Main hazards None
Flash point None
None
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Manufacture

Perfluoromethylcyclohexane can be manufactured by the Fowler process, which involves moderating the action of elemental fluorine with cobalt fluoride in the gas phase from toluene. This is preferred as the starting material over methylcyclohexane as less fluorine is required.[1]

Properties

Perfluoromethylcyclohexane is chemically inert and thermally stable (to over 400 °C). It is non-toxic.[2]

It is a clear, colorless liquid, with a relatively high density, low viscosity and low surface tension that will rapidly evaporate. It is a relatively good solvent for gases, but a poor solvent for solids and liquids.[3]

In common with other cyclic perfluorocarbons, perfluoromethylcyclohexane can be detected at extremely low concentrations, making it ideal as a tracer.[4]

Applications

References
  1. Sandford G (2003). "Perfluoroalkanes". Tetrahedron. 59: 437–454. doi:10.1016/s0040-4020(02)01568-5.
  2. "FLUTEC PP2". F2 Chemicals.
  3. "Solubility in Liquids" (PDF). F2 Chemicals.
  4. Begley P1, Foulger B, Simmonds P. (1988). "Femtogram detection of perfluorocarbon tracers using capillary gas chromatography-electron-capture negative ion chemical ionisation mass spectrometry". J. Chromatogr. 445 (1): 119–128. doi:10.1016/s0021-9673(01)84513-1.CS1 maint: uses authors parameter (link)
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