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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

In an enhanced OECD301B study the registration substance (17 mg/L; 10.8 mg C/L) reached the required level of 60% degradation to be ultimately biodegradable within 43 days using a non-adapted municipal activated sludge. Continuous degradation could be observed starting at day 6 reaching a maximum of 91% degradation on day 60. The only enhancement was the prolongation to 60 days.


In a standard OECD 301B CO2 EvolutionTest using a non-adapted municipal activated sludg the registration substance (10 mg/L) was not readily biodegradable, but a continuous degradation starting at day 9 could be observed reaching a maximum degradation of 24% after 28 days.

Under the test conditions of an OECD 302B Zahn-Wellens Test the registration substance was not inherently biodegradable.


Assessing the whole set of information the substance is not readily biodegradable and did not reach the required pass level in a study on inherent biodegradation, but a continuous degradation could be observed in the two existing studies on ready biodegradability. The substance reached the pass level of 60% degradation after 43 days and a maximum degradation of 91% on day 60. The substance is therefore ultimately biodegradable within 43 days.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed
Type of water:

Additional information