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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

1% biodegradation after 28 days (CO2 evolution)(OECD 301B)

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

The biodegradation potential of 2 -methyl-N-(4-sulfamoylphenyl) prop-2-enamide (SPM-N) in water was investigated in a study by Desmares-Koopmans (2007a). This test was performed according to OECD Guideline 301B, under GLP conditions. Activated sludge microorganisms were exposed to the test substance for a period of 28 days at 21 ± 1 °C and biodegradation was followed by measuring CO2 production in the test vessels. After 28 days of exposure, no biodegradation of SPM-N was observed (1%). Nevertheless, the results obtained in the toxicity control indicate that the substance does not inhibit the activated sludge microorganism activity (35% biodegradation within 14 days).