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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The effect of the substance on the respiration of activated sewage sludge gave a 3-Hour EC50 of greater than 1000 mg/l.
The No Observed Effect Concentration (NOEC) after 3 hours exposure was 1000 mg/l.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
1 000 mg/L

Additional information

In a 3-hour static test conducted according to OECD Guideline 209 the inhibitory effect of the substance on the respiration of activated sewage sludge was examined (Safepharm 2001).

According to the results of the range-finding test, a definitive limit-test was performed in a closed system at a nominal concentration of 1000 mg/L. The effect-concentration was based on the oxygen consumption rates. The result obtained was: EC50 (immobilisation) > 1000 mg/L.