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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

EC20 (3 h) > 1000 mg/L
EC50 (3 h) > 1000 mg/L
EC80 (3 h) > 1000 mg/L

Key value for chemical safety assessment

EC50 for microorganisms:
1 000 mg/L

Additional information

Isononyl benzoate was tested for its potential to inhibit microbial activities and therefore potentially interfere with sewage treatment plant microbial communities in a GLP study according to OECD 209. As test organism activated sludge from the sewage treatment plant Marl-West, predominantly treating domestic sewage was used. The contact time was 3 hours. No inhibition of the activated sludge respiration was observed up to the highest concentration tested. Thus, the EC20, EC50 and EC80 > 1000 mg/L.