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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 to biological treatment plants in appropriate low concentrations. 

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Additional information

The toxicity of the test compound to the degradation activity of activated sludge was assessed in a GLP study conducted according to OECD guideline 209. The activated sludge was collected at a municipal wastewater treatment plant and exposed for 3h to the following test item concentrations: 62.5, 125, 250, 500, and 1000 mg/L. No effect on the respiration rate coulde be observed in any of the concentration and the EC10 was determined to be > 1000 mg/L.