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Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

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Description of key information

A biodegradation simulation test according OECD guideline 303 A is regarded as invalid. It was not clarified if the substance degraded in the test system or merely bound to the sludge.

Key value for chemical safety assessment

Additional information

The inherent biodegradability of the test item was assessed in a simulation test (OECD 303A). The nominal test concentration was 27.07 mg/L. Measured by product specific analysis the test item was biologically eliminated by 41.6 %. Whether this result implies primary elimination only or mineralisation also cannot be answered positively. Since a high log Koc has been calculated adsorption to sludge can be assumed.