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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

The study of the "ready" aerobic biodegradability of DIMETHYLETHYLAMINE using the stringent OECD method 301D shows that this item reached a maximum biodegradation level of 67 % in 28 days. According to OECD Guideline 301 D, a substance is considered to be readily biodegradable if a level of 60 % degradation is reached within the 10-day period following the beginning of the degradation phase (which starts when 10 % of the TOC has been biodegraded). This 60 % must be reached during the 28-day test period.

Under the test conditions, the percentage of biodegradation of DIMETHYLETHYLAMINE reached 67 % of the ThOD at the end of the test (28 days) and this level was obtained within a 10 days window.

Ethylmethylamine is very similar to dimethylethylamine, missing one methyl group. Therefore, dimethylamine is expected to be a worst-case with regards to biodegradability. By read-across, ethylmethylamine is therefore considered readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

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