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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Readily biodegradable (according to OECD criteria)

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

Cyclohexanone was tested for ready biodegradation in an OECD 301F test (Manometric respirometry test), where cyclohexanone was degraded >90% within 28 days (BASF AG 1998). Municipal activated sludge from a laboratory wastewater treatment plant was used as inoculum. The OECD criteria for ready biodegradability (> 60 % BOD of ThOD, 10 -day window) were fulfilled. Therefore, cyclohexanone is readily biodegradable. This result is supported by another test on the ready biodegradability of cyclohexanone (OECD 301C, MITI 1) with degradation rates of 87% within 14 days.