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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

The ready biodegradability of the test substance was determined with non-adapted activated sludge in the Manometric Respirometry Test for a period of 28 days. Both test item replicates reached the 10 % level (beginning of biodegradation) within 2 days. The 60 % pass level was not reached within 28 days by the test item replicates. After 28 days the mean biodegradation was 25 %. The test item is classified as not readily biodegradable within 28 days.

The inherent biodegradability of the test item was determined with non-adapted activated sludge using an automated closed-system oxygen consumption measuring apparatus (BOD-meter) with the test substance as sole source of organic carbon for a period of 28 days. after 28 days, the mean perrcentage biodegradatin of the test substance was 40.4%. the test item is classified as not inherent biodegradable within 28 days.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information