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Names | |
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Preferred IUPAC name Pentafluorobenzene | |
Other names Pentafluorobenzene, phenyl pentafluoride | |
Identifiers | |
3D model (JSmol) | |
ChemSpider | |
ECHA InfoCard | 100.006.054 |
EC Number |
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PubChem CID | |
UNII | |
CompTox Dashboard (EPA) | |
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Properties | |
C6HF5 | |
Molar mass | 168.066 g·mol−1 |
Appearance | Colorless liquid |
Density | 1.511 g/cm3 |
Melting point | −47.4 °C (−53.3 °F; 225.8 K) |
Boiling point | 85 °C (185 °F; 358 K) |
Insoluble | |
Hazards | |
GHS labelling: | |
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Danger | |
H225, H302, H315, H318, H335 | |
Flash point | 14 °C (57 °F; 287 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Pentafluorobenzene is a synthetic organofluoride compound with the molecular formula C
6HF
5. [1] The compound consists of a benzene ring substituted with five fluorine atoms. [2] The substance is a colorless liquid with a boiling point similar to that of benzene. [3] [4]
It is prepared by defluorination of highly fluorinated cyclohexanes over hot nickel or iron. [5] Another method involved dehydrofluorination of polyfluorinated cyclohexane using hot aqueous solution of potassium hydroxide. [6]
It has been observed as a degradation by-product of the incineration of polytetrafluoroethylene and of biosolids. [7]
According to its Safety Data Sheet (SDS), the chemical is highly flammable, and is harmful if swallowed. The SDS states its "toxicological properties have not been fully investigated". Combustion by-products include hydrogen fluoride. [8]