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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 the substance introduced in appropriate low concentrations. The EC10 and EC50 values above 1000 mg/L were determined after 180 minutes of incubation.

Key value for chemical safety assessment

EC50 for microorganisms:
1 000 mg/L
EC10 or NOEC for microorganisms:
1 000 mg/L

Additional information

In a test with domestic activated sludge the inhibition of oxygen consumption was examined according to OECD guideline 209. Bacteria were exposed for three hours to the test substance at concentrations of 62.5, 125, 250, 50, 1000 mg/L. No inhibition of respirometric activity in any of the tested concentrations was detected. Thus the determined EC50 and EC10 values were > 1000 mg/L.