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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 dynamic viscosity is 2.60 cP (2.60 mPa*sec) at 40 ºC.

Key value for chemical safety assessment

Additional information

The standard information requirement for REACh is a determination of viscosity at 20 °C. Because diphenyl ether is a solid at this temperature, measurement is not feasible and any reported values for 20 °C are suspect. Alternatively, the viscosity at 40 °C is reported as this represents a temperature at which the substance occurs as a liquid, and representative of lowest practical use temperature.