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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways


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Administrative data

Link to relevant study record(s)

Description of key information

epsilon-Caprolactam is not considered to hydrolyze rapidly when released to water.

Key value for chemical safety assessment

Additional information

The half-life of epsilon-Caprolactam in water of > 1 year was calculated with HYDROWIN v1.67. According to HSDB (2008), hydrolysis is not expected to be an important environmental fate process due to its slow hydrolysis rate.