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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Link to relevant study record(s)

Description of key information

Readily biodegradable: 79.8% (O2 consumption) in 28 days

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

One ready biodegradation study is available for Fatty acids, C8-10, 2-ethylhexyl esters (CAS No. 649747-80-8).

This key ready biodegradability study was carried out with Fatty acids, C8-10, 2-ethylhexyl esters (CAS No. 649747-80-8), following OECD Guideline 301 B (Bouillon, 2010). Sludge from a domestic STP was used as inoculum. During the 28-day test period, biodegradation reached 79.8%, based on CO2 evolution. The 10-day window criterion, defined for mono-constituent substances, was met, although it would not be required since the substance is a UVCBs.


In conclusion, Fatty acids, C8-10, 2-ethylhexyl esters can be considered readily biodegradable according to OECD criteria.