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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Water solubility

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Administrative data

Link to relevant study record(s)

Description of key information

The water solubility of N-(n-octyl)-2-pyrrolidinone is 1250 mg/L at 20 degrees centigrade. It is therefore not completey miscible with water.

Key value for chemical safety assessment

Water solubility:
1 250 mg/L
at the temperature of:
20 °C

Additional information

Two studies are available from the migrated NONS file provided by ECHA. One finds the solubility in water of N-(n-octyl)-2-pyrrolidinone to be 1360 mg/L at 20 degrees centigrade, and the other finds the solubility in water to be 1140 mg/L at 20 degrees centigrade and a pH of 6.9. The mean value is 1250 mg/L, and it is concluded that that this value shall be used as the water solubility for N-(n-octyl)-2-pyrrolidinone, and it is not completely miscible with water.