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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

An OECD 209 Guideline "Activated Sludge, Respiration Inhibition Test" resulted in an EC50>1000 mg/L.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
1 000 mg/L

Additional information

One reliable key study is available for testing the toxicity of MPD to microorganisms. A OECD 209 Guideline "Activated Sludge, Respiration Inhibition Test" resulted in an EC50>1000 mg/L. No respiration inhibition by MPD was observed in a 1000 mg/L limit test with a exposure duration of 3 hours. Based on this result a NOEC of >= 1000 mg/L was determined.