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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

Based on the respiration rate using activated sludge, the 3h-EC50 for the test substance  was found to be >100 mg/L (Caspers et al., 1986), following an OECD 209 Activated Sludge, Respiration Inhibition Test.

Key value for chemical safety assessment

EC50 for microorganisms:
100 mg/L

Additional information

An OECD 209 Activated Sludge, Respiration Inhibition Test is available for PMDI (Caspers et al., 1986). Based on the respiration rate using activated sludge, the 3h-EC50 was found to be >100 mg/L, which was the highest concentration tested. This value may be used for the derivation of a PNECstp.