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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

Activated sewage sludge micro organisms

Key value for chemical safety assessment

EC50 for microorganisms:
1 000 mg/L

Additional information

A limit test at the concentration of 1000 mg/L was performed based on results from a preliminary range-finding test. The effect of the test substance on the respiration of activated sewage sludge micro organisms gave a 3 hours EC50 > 1000 mg/l. An NOEC of 1000 mg/l for microorganisms was derived. Based on this study the PNEC stp value was calculated. The NOEC value derived from the study indicates no toxicity to microorganisms

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