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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Vapour pressure

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Description of key information

The vapor pressure of FC-72 at 20 °C is 178.3 mm Hg (23.77 kPa) (ASTM E1719-97).

Key value for chemical safety assessment

Additional information

In the key study, the vapor pressure of FC-72 was measured under method ASTM E1719-97 (Vapor Pressure of Liquids by Ebulliometry). The study was not conducted in accord with GLP guidelines. Therefore, the study is classified as acceptable with restrictions. In a supporting study of two purified isomers of the FC-72 mixture, a vapor pressure of 217.9 mm Hg at 24.90 °C was reported for perfluoro-n-hexane and a vapor pressure of 206.0 mm Hg at 23.82 °C was reported for perfluoro-2-methylpentane. A third study reported a vapor pressure of 30.9 x 10E3 Pa at 25 °C for FC-72. However, due to few details available, neither supporting study cannot be classified as to its reliability.