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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

A biodegradation test with Reaction mass of 2-butylheptanoic acid and 2-ethylnonanoic acid and 2-methyldecanoic acid and 2-propyloctanoic acid is not available. The read-across substance Reaction mass of n-undecanoic-acid and 2-methyl-decanoic-acid and 2-ethyl-nonanoic-acid and 2-propyl-octanoic-acid and 2-butyl-heptanoic-acid was demonstrated to be readily biodegradable in an OECD 301B-test. This result is supported by a test of the analogue 2-butyloctanoic acid.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

A biodegradation test with Reaction mass of 2-butylheptanoic acid and 2-ethylnonanoic acid and 2-methyldecanoic acid and 2-propyloctanoic acid is not available.

The similar substance Reaction mass of n-undecanoic-acid and 2-methyl-decanoic-acid and 2-ethyl-nonanoic-acid and 2-propyl-octanoic-acid and 2-butyl-heptanoic-acid was tested for ready biodegradation according to OECD 301B. The degradation of the test item was 77.2 % within 28 days after acidification. The biodegradation of the test item reached the criterion for ready biodegradation. In a supporting OECD 301B study the percentage biodegradation of the analogue substance 2-butyloctanoic acid exceeded 60% within the 10-day window and was also considered to be readily biodegradable.