Registration Dossier
Registration Dossier
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EC number: 500-214-9 | CAS number: 68440-06-2
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Fatty acids, C18-unsatd., dimers, hydrogenated, 2-ethylhexyl esters is not readily biodegradable according to the OECD criteria.
Key value for chemical safety assessment
Additional information
The study with Fatty acids, C18-unsatd., dimers, hydrogenated, 2-ethylhexyl esters (CAS 68440-06-2) was performed according to OECD 301B (GLP) under aerobic conditions using activated sludge from a sewage treatment plant treating predominantly domestic sewage with a test substance concentration of 12.7 mg/L (Roulstone, 2014). A biodegradation of 49% (CO2 evolution) was observed after 28 d. Since the substance did not reach the pass level for OECD 301B (biodegradation is > 60% after 28 d, 10-day window fulfilled) the substance is not readily biodegradable according to the OECD criteria. However, since no plateau was reached after 28 d it is expected that the substance passes the 60% in a prolonged study. Currently the substance can be classified as “inherently biodegradable, not fulfilling specific criteria”.
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