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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

 (2-Ethoxy-1-methyl-2-oxoethyl)-5-[2-chloro-4-(trifluoromethyl) phenoxy]-2-nitrobenzoate  is not readily biodegradable under the conditions of the test according to Council Directive 92/69/EEC Method C.4-D "Manometric Respirometry Test"

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

Due to its extreme low solubility in water (approximately 0.1 mg/L), (2-Ethoxy-1-methyl-2-oxoethyl)-5-[2-chloro-4-(trifluoromethyl) phenoxy]-2-nitrobenzoate formed a sediment in the test vessels but was - most likely - not available to the microorganisms for degradation. It is well-known that biodegradable substances may not be degraded in similar tests at very low concentrations due to their inability to induce biotic degradation under these conditions.