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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

10-day-window: day 3 -13 
degradation at the end of 10-day-window: 73 %
degradation at the end of the test: 89%
pass level: 60% at the end of 10-d-window

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

The test item was tested using a concentration of nominally 20 mg organic carbon/L (corresponding to 29.7 mg test item/L) in test medium following OECD 301 Band EU-Method C4 -C.

Aniline was chosen as reference item. Activated sludge was used as inoculum (concentration in the test 25.9 mg dry matter/L) . The test was left running for 28 days. All validity criteria were met. Degradation of the reference item was 82 % after six days. The following data could be determined for the test item:

10-day-window: day 3 -13

degradation at the end of 10-day-window: 73 %

degradation at the end of the test: 89%

pass level: 60% at the end of 10-d-window