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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

A GLP-compliant study according to OECD 301D (Closed Bottle Test) is available for Reaction product of p-nonylphenol, formaldehyde and diethanolamine, propoxylated (TOXI-COOP Zrt, 2013). In this study, activated sludge from a waste water treatment plant receiving predominantly domestic waste water is exposed to 3 mg/L of the test substance for 28 days. Under the conditions of the test, the percentage biodegradation of test substance reached a mean of 8.9 % after 28 days (based on COD). A maximum biodegradability value of 12.9 % was observed on day 21. Based on these data, the test item is to be considered as not readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information