Registration Dossier
Registration Dossier
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EC number: 206-764-3 | CAS number: 373-44-4
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
The inhibiton of the degradation activity of activated sludge is not anticipated when introduced in appropriately low concentrations.
Key value for chemical safety assessment
Additional information
The EC20 value (180 min) was determined in an ISO 8192 short-term respiration test at 110 mg/L (BASF AG, 1990). There was no analytical monitoring during the test. 110 mg/L is used for the PNEC STP assessment. The study is supported by an ISO 8192 limit test. There was no effect until the concentration of 31 mg/L (BASF AG, 1990). A Pseudomonas putida growth inhibition test according to Bringmann-Kuehn was conducted in 1989 (BASF AG). There was an EC10 value of 68.9 and an EC50 value of 99.4 mg/L. Based on these results, inhibiton of the degradation activity of activated sludge is not anticipated when the substance is introduced in appropriately low concentrations.
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