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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The substance exhibits an EC50 of 326 mg/L and an EC10 of 38 mg/L for STP microorganisms.

Key value for chemical safety assessment

EC50 for microorganisms:
326 mg/L
EC10 or NOEC for microorganisms:
38 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 17.3, 34.6, 69.1, 138.2, 276.5, 553 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 326 mg/L, the EC10 was 38 mg/L.