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Environmental fate & pathways

Biodegradation in water: screening tests

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Link to relevant study record(s)

Description of key information

There is one screening test according OECD Guideline 301 C (readily biodegradation) available. In this test the test item must be regarded to be not readily biodegradable after 28 days. No primary biodegradation / elimination was determined at test end. A second test according the OECD Guideline 302 C (inherent biodegradation) shows the following result. Based on the residue analysis, biodegradation of the test substance was 7.77% in the “test” vessel during the testing period. The BOD results showed that biodegradation of the test substance was 14.7% after 28 days. The test substance has no inherent biodegradation. 
Therefore under the test conditions of both studies (OECD 301C and OECD 302C) the pass level was not reached. The test substance is not readily biodegradable and not inherently biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

There is one screening test according OECD Guideline 301 C (readily biodegradation) available. In this test the test item must be regarded to be not readily biodegradable after 28 days. No primary biodegradation / elimination was determined at test end. A second test according the OECD Guideline 302 C (inherent biodegradation) shows the following result. Based on the residue analysis, biodegradation of the test substance was 7.77% in the “test” vessel during the testing period. The BOD results showed that biodegradation of the test substance was 14.7% after 28 days. The test substance has no inherent biodegradation.

Therefore under the test conditions of both studies (OECD 301C and OECD 302C) the pass level was not reached. The test substance is not readily biodegradable and not inherently biodegradable.