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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

Additional information

The IC50 value of the test substance on activated sludge according to OECD 209 was determined to be greater than 100 mg/L (Ciba-Geigy 1991). This result is supported by another study according to ISO DIS 9509 in which an EC10 value of 115 mg/L was determined (RCC 1993).