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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

In a guideline study according to OECD 209 sewage sludge microorganisms were exposed to the test item (CIBA-GEIGY 1989). The IC50 value based on respiration rate was ≥100 mg/L after a 3 h contact time. Therefore, the inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations.