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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

No inhibition of respiration of activated sludge was observed up to 100 mg/L the highest tested concentration in an OECD 209 compliant study.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
100 mg/L

Additional information

The effect of the test item on bacteria was assessed according to OECD 209 by measuring the micro-organisms respiration rate on a sample of activated sludge during an incubation period of 3 hours.


 EC50- 3h n-HEPTANOL >100 mg/L, and NOEC = 100 mg/L


n-heptanol did not show any effect on the respiration of activated sludge in the conditions of the test up to a concentration of 100 mg/L.