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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations. No toxic effects occur at the range of solubility

Key value for chemical safety assessment

Additional information

In a short term respiration test according to OECD guideline 209, no respiration inhibition of domestic activated sludge was observed over a period of 3 hours at 1000 mg/L test substance concentration. Therefore, the inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations.

The NOEC was determined to be at least 1000 mg/L and the EC50 (72h) was found to be higher than 1000 mg/L.