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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

In an activated sludge respiration inhibition test according to OECD 209 and compliant to GLP (RL 1) the potential of the test item to inhibit microbial respiration of sewage sludge microorganisms was determined. The EC50 obtained is 800 mg/L.

Key value for chemical safety assessment

EC50 for microorganisms:
800 mg/L

Additional information

In an activated sludge respiration inhibition test according to OECD 209 and compliant to GLP (RL 1) the potential of the test item to inhibit microbial respiration of sewage sludge microorganisms was determined.

Results:

EC10 and EC20: <58 mg/L

EC50 = 800 mg/L

EC80 > 1000 mg/L.

A EC50 of 1474 mg/L was obtained in another study with the less reliable Fermentation Tube method.