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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The study was performed according to OECD Guideline 209 and GLP guidelines.

Key value for chemical safety assessment

EC50 for microorganisms:
100 mg/L
EC10 or NOEC for microorganisms:
100 mg/L

Additional information

As the substance was hardly soluble in water, test concentrations were prepared separately in Milli-RO water. Initial loading rates of 200 mg/L were mixed thoroughly, followed by a stirring period of at least 24 hours in the test bottles. Subsequently, synthetic sewage feed and sludge were added resulting in final loading rates of 100 mg/L.

No inhibition of respiration rate of the sludge was recorded at a final loading rate of 100 mg TS per litre.