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Toxicity to microorganisms

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Description of key information

Toxicity to microorganisms: not toxic to microorganisms: inhibition of respiration rates <15% (OECD 209, activated sludge respiration inhibition test)

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
1 000 mg/L

Additional information

Respiration rates were decreased by, at most, 8% at a test substance concentration of 10 mg/L and 5% in one mixture at 1000 mg/L. Since the permitted maximum difference for specific respiration rates in control beakers established at the beginning and end of the test period was 15%, this value is taken as the criteria for biologically significant levels of inhibition in mixtures containing the test substance.