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Toxicity to microorganisms

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Description of key information

The 3-hour EC50 value for inhibition of respiration of activated sludge was 815 mg/L.

Key value for chemical safety assessment

EC50 for microorganisms:
815 mg/L

Additional information

The inhibition of respiration of activated sludge following three hours of exposure to methyl benzoate at a series of test concentrations was determined in a valid study in accordance with OECD TG 209. Activated sludge was taken from a laboratory sewage treatment plant according to OECD. The EC50 value for inhibition of the respiration rate of activated sludge was 815 mg/L after 3 hours of exposure.