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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

Activated sludge Respirometry Inhibition: EL50 >100 mg/l and NOELR of 100 mg/l, 3 hours (OECD 209)

Key value for chemical safety assessment

EC50 for microorganisms:
100 mg/L

Additional information

Water Accommodated Fractions (WAFs) of two CTO Samples caused no acute toxic effects on bacteria in an Activated Sludge, Respiration Inhibition Test as Limit Test conducted according to OECD 209. A 3 h EL50 of > 100 mg/L and a NOELR of 100 mg/L have been determined for the test substance.