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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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


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Administrative data

Link to relevant study record(s)

Description of key information

The viscosity of FC-72 is within the range 0.710 - 0.787 mPa∙s at 20.00 °C (Ubbelohde viscometer).

Key value for chemical safety assessment

Additional information

A viscosity of 0.707 mPa∙s at 20.32 °C (0.710 mPa∙s at 20.00 °C, interpolated) was reported for perfluoro-n-hexane. A viscosity of 0.786 mPa∙s at 20.21 °C (0.787 mPa∙s at 20.00 °C, interpolated) was reported for perfluoro-2-methylpentane. The data included in the report was for the purified components rather than for FC-72 itself. The publication did not specify whether a guideline was followed and the study was not conducted in accord with GLP guidelines; therefore, the results are considered reliable with restrictions. Another value for viscosity was found in a summary document on substance properties. However, due to few details available, it cannot be classified as to its reliability.