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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

C12-C18 TMAC is readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

An OECD 301 D (closed bottle test) study was conducted to determine the ready biodegradability of C12-C18 TMAC. The test substance at 3 mg/L was incubated with sludge from activated sludge plant treating predominantly domestic waste and O2consumption was determined over a period of 28 days. The test substance reached a biodegradation of 75% at Day 28. As evident from the biodegradation of 59% at Day 5 and 74% at Day 17, the plateau for ready biodegradability of the test substance was reached within 14 days of the time point when 10% degradation occurred. Under these test conditions, the test substance is considered readily biodegradable (Ginkel, 1989).