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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Physical & Chemical properties


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Description of key information

Based on the average of two publications, the viscosity of pyrrolidine is concluded to be 0.848 mPa*s at 20°C (dynamic).

Key value for chemical safety assessment

0.848 mPa · s (dynamic)
at the temperature of:
20 °C

Additional information

According to published data, the viscosity of pyrrolidine is 6.1472 mPa s at unknown temperature (Daubert and Danner, 1989). In a second publication (referenced in Beilstein, 2010), the viscosity of pyrrolidine is reported to be 0.756 mPa s at 20°C. According to the Gestis database, the viscosity of pyrrolidine is 0.94 mPa s at 20°C.The average of the two publications which report viscosity of pyrrolidine at 20°C is used as value for CSA.