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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

Depending on local conditions and existing concentrations, disturbances in the biodegradation process of activated sludge are possible.

Key value for chemical safety assessment

EC50 for microorganisms:
64 mg/L
EC10 or NOEC for microorganisms:
3 mg/L

Additional information

The toxicity to microorganisms was tested in a GLP approach according to OECD guideline 209 using domestic non-adapted activated sludge as inoculum (BASF SE 08G0074/12G233, 2013). After an incubation period of 180 minutes the EC10 was found to be 3 mg/L while the EC50 was estimated to be 64 mg/L, both related to the nominal concentrations.