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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The substance exhibits a NOEC for microorganisms of 32 mg/L.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
32 mg/L

Additional information

One reliable toxicity study to microorganisms is available. The toxicity to microrganisms was studied by following to OECD TG No. 209 and in compliance with GLP. Following a preliminary range-finding test, activated sewage sludge was exposed to aqueous dispersions of the test item at nominal concentrations of 10, 18, 32 and 56 mg/L (five replicates of each) for a period of 3 h. Toxicity to micro-organisms was assessed by measuring the respiration rate. No statistically significantly toxic effects were shown at the test concentrations of 10, 18 and 32 mg/L, however statistically significantly toxic effects were shown at the test concentration of 56 mg/L. Based on these results the No Observed Effect Concentration (NOEC) after 3 h exposure was 32 mg/L.