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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

The test item attained a mean degradation value of 88%  degradation after 28 days and satisfied the 10 day window validation criterion. The test item can therefore be considered to be readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

A reliable study was performed in accordance with GLP and OECD Guideline 301F to assess the ready biodegradability of 9-dodecenoic acid, methyl ester in an aerobic aqueous media and soil/sediment. The test item, at a concentration of 100 mg/L was exposed to inoculum consisting of sewage treatment microorganisms and soil/sediment filtrate with mineral medium in sealed culture vessels in diffuse light at 21 ± 1 °C for 28 days.

The degradation of the test item was assessed by measurement of daily oxygen consumption values. Control solutions with inoculum and the reference item, aniline, together with a toxicity control were used for validation purposes.

The test item attained a mean degradation value of 88% degradation after 28 days and satisfied the 10 day window validation criterion. 9-dodecenoic acid, methyl ester is therefore considered to be readily biodegradable.