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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
1 000 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 08G0642/12G231, 2013). After an incubation period of 180 minutes the EC10 was found to exceed 1000 mg/L based on the nominal concentrations. In a study according to DIN 38412, part 8, the EC10 value of the test item on Pseudomonas putida was determined to exceed the highest test concentration of 1000 mg/L (BASF AG 9/1215/88.1988). Hence, the inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriate low concentrations.