Registration Dossier
Registration Dossier
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EC number: 273-468-9 | CAS number: 68971-49-3
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
IC50 (3 h) > 100 mg/l
Key value for chemical safety assessment
- EC50 for microorganisms:
- 100 mg/L
Additional information
Three tests were performed according to OECD 209 on the substance OB 3a-DSA, resulting in LC50s greater than 100 mg/l (highest tested concentration); only the summary of the test reports are available, thus the reliability cannot be confirmed. Nevertheless, the results are consistent and in agreement with the expected results for the category and they can support the the results obtained in the available studies on the most similar substance within the category, OB 3a-MSA. Justification for Read Across is given in Section 13 of IUCLID
All studies demonstrate that the substance does not inhibit the degradation activity of activated sludge in concentrations higher or equal to 100 mg/l.
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