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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.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
100 mg/L

Additional information

In an OECD 209 guideline study conducted by Ciba-Geigy in 1990 the effect of the test substance on the respiration rate of activated sludge that was derived from a Husman apparatus was determined. After 3 hours of exposure no adverse effect on the respiration rate was observed and therefore the EC0 was determined as > 100 mg/L. The inhibition of the degradation capacity of activated sludge is not anticipated from the test substance.

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