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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 viscostiy of PFBE was determined to be 0.375 mm2/s at 20°C and 0.307 mm2/s at 40°C.

Key value for chemical safety assessment

0.375 mm²/s (static)
at the temperature of:
20 °C

Additional information

The viscosity of PFBE was determined using a capillary viscometer method, designed to be compatible with Method 114 of the OECD Guidelines for Testing of Chemicals, 2 October 2012. The results are as follows:

Temperature (°C)

Viscosity (mm2/s)

20.0 ± 0.5


40.0 ± 0.5