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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

Two short term respiration inhibition tests conducted by BASF (1988, 1993) demonstrate the effect on domestic and industrial activated sludge. The EC20 values were > 1000 mg/L in both studies. In a study exposing Pseudomonas putida to not neutralised test solutions an EC10 of 274 mg/L was observed.