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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Viscosity

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Administrative data

Link to relevant study record(s)

Description of key information

The kinematic viscosity of FC-40 is 2.04 mm²/s at 25 °C.
The kinematic viscosity of FC-43 is 2.64 mm²/s at 25 °C.

Key value for chemical safety assessment

Additional information

Although automated viscometry and the viscometers used in these studies are compliant with ASTM D2515 and ASTM D446 standards, it is unknown whether these studies followed an ISO, ASTM, or OECD guideline or if the viscometers were calibrated. The studies were not conducted in accord with GLP guidelines. Therefore, the studies are classified as reliable with restrictions.