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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Biodegradation in water: screening tests

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Description of key information

Readily biodegradable according to OECD criteria.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

The experimental data on the readily biodegradability of 2 -methylimidazole are available.

In a GLP study conducted according to OECD guideline 301B the substance was determined to be readily biodegradable (67% % CO2/ThO2 after 28 days, 10 -day window criterion met). The test was performed with an activated sludge from a sewage treatment plant treating predominantly domestic sewage (BASF SE 2011, rep. No.: 22G0098/02G009). This study was selected as key study.

The substance was not biodegraded in a modified MITI test according to OECD 301C (0% BOD after 28 days; NITE, 1992).

Based on the available experimental data it can be concluded that 2-Methylimidazole CAS (693-98-1) is readily biodegradable according OECD criteria.