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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

EC50 for microorganisms:
68 mg/L

Additional information

The key study regarding toxicity to microorganisms was performed by BASF (1999) according to OECD guideline 209 using domestic activated sludge. After 30 minutes an EC20 of 68 mg/l related to the nominal concentration was measured in this GLP-study.