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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 readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

The ready biodegradability of the test substance was determined in a GLP-compliant study according to OECD Guideline 301A (Solvias, 2003). The initial test substance concentration was 36.6 mg/L based on DOC. Biodegradation of the test substance after 28 days was found to be 2%.

The inherent biodegradability of the test substance was determined in a GLP-compliant test according to OECD Guideline 302B (Solvias, 2003). The initial test substance concentration was 153.6 and 154.5 mg/L based on DOC. After 3 hours and 10% biodegradation was observed after 28 hours.

The biological oxygen demand (BOD5) was examined in a GLP-compliant study according to ISO 5815 (Solvias, 2003). The BOD5 of the test substance was found to be 0 mg O2/g. The chemical oxygen demand (COD) was examined in a GLP-compliant study according to EC method C.6. (Solvias, 2003). The COD of the test substance is 838 mg O2/g.