Registration Dossier
Registration Dossier
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EC number: 696-130-6 | CAS number: 1364681-45-7
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
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
Additional information
A test on the acute toxicity to microorganisms of the actual test item is not available. However, data on a structural analogue (CAS 8050-09-7) are availble. For read-across justification see Annex.
The activated sludge respiration inhibition of the test substance was determined in a OECD 209 study conducted under GLP using non-adapted activated sludge from a predominately domestic sewage treatment plant (DR U.NOACK-LABORATORY 1997). The test substance was tested at 5 concentrations ranging from 1000 to 10000 mg/L, and a reference substance was tested at 3 concentrations. The respiration rates were compared with the two controls to determine inhibition concentrations. EC20, EC50, and EC 80 values were all determined to be > 10,000 mg/L.
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