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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

The test substance, Centralit, was tested for the ready biological degradability in Closed Bottle Test. 
The test was performed according to: Method C.4E - Closed Bottle Test, Council Regulation (EC) No. 440/2008, published in O.J.L 142, 2008.

The results of biological degradation are related to experimentally determined COD values of test and reference substance at the beginning of the test. The direct dosing of test substance into each bottle was implemented.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

In this 28-day study of ready biological degradability the degradation of 12.8 % of the test substance, Centralit, was attained in the end of study. Based on results of study Ethyl centralite is not ready biodegradable.