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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

The test substance is not inherently biodegradable under the conditions of the modified Zahn-Wellens test (OECD 302B).

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

The test substance was tested for inherent biodegradation in a modified Zahn-Wellens test according to OECD 302B. A significant biological degradation was not noted. The DOC-removal with three different sludge types was consistently below 10 % after 28 days.

This result is in line with the results from a (non-reliable) study investigating BOD5 and COD of the test item. The BOD5 = 26.3 % COD, thus the test item is not considered readily biodegradable.