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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

Depending on local conditions and existing concentrations, disturbances in the biodegradation process of activated sludge are possible. 

Key value for chemical safety assessment

Additional information

Two guideline studies on the respiration and growth of microorganisms respectively are available. A study conducted in compliance with OECD 209 investigated the respiration inhibition induced by the substance in activated sludge. Based on the respiration rate a EC50 of 70 mg/l was determined after an inoculation time of 30 minutes (BASF AG, 1994). In a second study following DIN 38412, part 8 the effect of the substance on the growth of Pseudomonas putida was terminated after 16 hours inoculation time. The study reports an EC50 of 3832 mg/l (BASF AG, 1994).