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Environmental fate & pathways

Biodegradation in water: screening tests

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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.