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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The 3 h EC50 for the test substance is greater than 1000 mg/L. The inhibition of the degradation activity of activated sludge is not anticipated.

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Additional information

The respiration inhibition of the test item was tested in a respiration inhibition test (Hertl, 1999) using activated sludge fed with synthetic sewage (OECD 209). Only a moderate inhibition of 12.7% compared to the control was observed at the highest test item concentration of nominal 1000 mg/L. Thus, the 3 h EC50 for the test substance was not able to be quantified in this test and is > 1000 mg/L. The NOEC was >= 320 mg/L.