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Ecotoxicological information

Toxicity to microorganisms

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Link to relevant study record(s)

Description of key information

One activated sludge inhibition study

Key value for chemical safety assessment

EC50 for microorganisms:
66 mg/L
EC10 or NOEC for microorganisms:
12 mg/L

Additional information

A study was performed to assess the effect of the test item on the respiration of activated sewage sludge. The method followed was designed to be compatible with the OECD Guidelines for Testing of Chemicals (2010) No. 209 "Activated Sludge, Respiration Inhibition Test (Carbon and Ammonium Oxidation) ". The effect of the test item on the respiration of activated sewage sludge gave a 3-Hour EC50 value of 66 mg/L, 95% confidence limits 56 - 77 mg/L. The reference item gave a 3-Hour EC50 value of 11 mg/L, 95% confidence limits 9.0 - 13 mg/L.