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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 inhibition of the respiration has been tested in a short-term test according to OECD 209 and GLP (Springborn Laboratories, Inc. 1998). After 3 h of exposure no respiration inhibition of the activated sludge (primarily domestic sewage) could be observed. The EC50 was determined to be above 1050 m/L (the highest tested concentration). Therefore, the inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations.