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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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


Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

In an OECD guideline closed bottle ready biodegradation test, 85% degradation was seen after 28 days when using a micro-organisms seed mixture of synthetic sewage micro-organisms and soil. This and other available studies suggest that there can be a significant time lag before degradation commences. This particular study suggested that the 10 day window was not met, although the number of sampling points was not sufficient for a definitive assessment. However, a supporting closed bottle study on a mixture containing predominantly (>70%) 2 -(2 -(2 -butoxyethoxy)ethoxy)ethanol showed 76% degradation after 28 days and met the 10 day window, although the same lag before degradation commenced was observed. The substance is readily biodegradable and meets the 10 day window.