Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

Abiotic degradation:

The tropospheric half-life of 2-Pyrrolidone was estimated based on a calculation with the scientifically accepted EPI-Win software tool of US-EPA (AOP-Win, v.1.92). In the atmosphere 2-pyrrolidone is expected to be indirectly photodegraded with a half life of ca. 10.8 hours. The calculation indicates a rapid degradation of 2 -pyrrolidone when potentially entering the atmosphere. It is not to be expected that 2 -pyrrolidone will accumulate in the air or be transported in the gaseous phase over long distances. Hence, air will not be an environmental compartment of concern for the compound. Hydrolysis is not expected under environmental conditions.

Biodegradation:

The study results regarding ready biodegradation are derived from the analogue 1-methyl-2-pyrrolidone (NMP, CAS 872-50-4) due to the fact that no studies were available for 2-pyrrolidone (CAS 616-45-5).

However, there are studies for inherent biodegradability for the source (NMP) and the target (2 -pyrrolidone) substances available. As such cross-reading between these components is confirmed by these results for inherent biodegradability.

In conclusion, in different screening tests the analogue substance to 2-pyrrolidone (1-methyl-2pyrrolidone) showed ready biodegradability. In experiments for inherent biodegradability it was found that both substances, 2-pyrrolidone as well as 1-methyl-2-pyrrolidone, are easily eliminated from water. The biodegradation level in soil was found to be higher than 90 %.