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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The substance exhibits an EC50 of 241 mg/L and an EC10 of 129 mg/L for STP microorganisms.

Key value for chemical safety assessment

EC50 for microorganisms:
241 mg/L
EC10 or NOEC for microorganisms:
129 mg/L

Additional information

One reliable study is available for the registered substance. The toxicity to microorganisms was studied according to OECD TG No. 209 and GLP. The substance was tested at concentrations of 35.0, 70.1, 140.2, 280.3, 560.6 mg/L (nominal) and the inoculum (microbial source) was activated sludge of a predominantly domestic sewage. The validity criteria were fulfilled. The EC50 for inhibition of respiration of activated sludge after 3 h contact time was 241 mg/L, the EC10 was 129 mg/L.