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Environmental fate & pathways

Biodegradation in water: screening tests

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Following its dissolution in aqueous media, the biodegradation of 2-ethylhexanoic acid, iron salt in the environment is determined by the respective potential of iron cations and 2-ethylhexanoate anions. Whereas 2-ethylhexanoate is readily biodegradable (99% biodegradation in 28 d acc. to an OECD 301E test), the concept of biodegradation is not applicable to iron cations since metals are not degraded. However, due to rapid removal from the water column, iron is regarded as “rapidly biodegradable” for classification purposes.

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