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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The kinematic viscosity of  1-2-hydroxyethylpyrrolidin-2-one is 67.4 mm2/s at 20 °C and 24.3 mm2/s at 40 °C

The dynamic viscosity of 1-2-hydroxyethylpyrrolidin-2-one is 77.2 mP*s at 20°C and 27.4 mPa*s at 40°C.

Key value for chemical safety assessment

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

Additional information

A GLP study was conducted in accordance with the OECD Guideline for the Testing of Chemicals 114 "Viscosity of liquids" using a capillary viscosimeter for determination of the kinematic viscosity and the dynamic viscosity was calculated by multiplication of the kinematic viscosity with the density. The GLP study determined the kinematic viscosity to be 67.4 mm2 /s at 20 °C and 24.3 mm2/s at 40 °C. The dynamic viscosity was calculated to be 77.2 mP*s at 20°C and 27.4 mPa*s at 40°C.