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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

EC50 (5 min, nitrification): 150mg/l
NOEC (5 min, nitrification): 100mg/l

Key value for chemical safety assessment

EC50 for microorganisms:
150 mg/L
EC10 or NOEC for microorganisms:
100 mg/L

Additional information

In a well-conducted approved method selected to control test substance loss by volatilization during aeration, the effect of test substance on the nitrifying activity of activated sewage sludge gave a 5-min EC50 of 150 mg/l. The No Observed Effect Concentration (NOEC) after 5-minutes exposure was 100 mg/l.