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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Not readily biodegradable: 27.5-41.1% (CO2 evolution) in 28 days (OECD 301B)

Key value for chemical safety assessment

Additional information

One study investigating the ready biodegradability of Fatty acids, C18 unsaturated, trimers, 2-ethylhexyl esters (CAS No. 173832-46-7) is available. The study was conducted according to OECD guideline 301B under GLP conditions using non-adapted activated sludge as inoculum (Desmares-Koopmans, 1997). Based on CO2 evolution mean degradation rates of 27.5% and 41.1% were observed after 28 days (for replicates 1 and 2, respectively). Hence, the substance is determined to be partly biodegradable.