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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Vapour pressure

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Description of key information

Vapour Pressure: 0.12 hPa at 20 °C.

Key value for chemical safety assessment

Vapour pressure:
0.12 hPa
at the temperature of:
20 °C

Additional information

n-Vinylpyrrolidinone has a measured vapour pressure of 0.12 hPa at 20 °C and 1.23 hPa at 50 °C (BASF, 1982). These values are supported by sevaral other measured and published values that include 1.97 hPa at 56.9 °C and 133.2 hPa at 148 °C (BASF, 1976), 0.144 at 20 °C and 1.3 at 50 °C (BASF 1994), 13 hPa at 91 °C (GESTIS, 2010), and 0.152 hPa @ 25 °C (Japan CHIRP database, 2010 and SRC, 2010).