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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

After 28 days 38%  and 40% degradation at 10 and 20 mg/l, respectively, in a CO2 evolution test. no further biodegradation after prolongation to 40 days.  Not readily biodegradable.

After 28 days 99%  degradation in a Zahn-Wellens test. Inherently biodegradable.

Key value for chemical safety assessment

Additional information

Biodegradation in water was tested in two screening studies, according to OECD guideline 301 B (Ready Biodegradability, CO-evolution) and 302 B (Inherent Biodegradability, Zahn.-Wellens)

After 28 days 38% and 40% degradation was observed at 10 and 20 mg/L, respectively, in the CO2 evolution test. No further biodegradation was observed after prolongation to 40 days. Not readily biodegradable.

After 28 days 99% degradation in the Zahn-Wellens test. Inherently biodegradable.