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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

EC50 (3 h) > 1000 mg/L and EC20 (3 h) > 1000 mg/L (nominal)

Key value for chemical safety assessment

Additional information

The toxicity of alcohol ethoxylate ((Z)-9-Octadecen-1-ol ethoxylated, < 2.5 EO, CAS 9004-98-2) to microorganisms was investigated according to OECD guideline 209 (Clariant, 1992). Domestic, non-adapted sewage sludge was exposed to nominal concentrations of 500 and 1000 mg test item/L for 3 h. No toxic effects on microorganisms were observed up to the highest test concentration.