Registration Dossier
Registration Dossier
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EC number: 618-460-1 | CAS number: 9010-89-3
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 to biological treatment plants 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 determined in a respiration inhibition test according to OECD guideline No 209 and in compliance with GLP criteria.
In this study, the test substance was inoculated for 3 hours with activated sludge of a predominantly domestic sewage treatment plant at nominal concentrations of 0 (control), 1, 3.2, 10, 32, 100, 320 and 1000 mg/L. As the test item contains a volatile compound, the test was performed in closed flasks. No test substance analysis was performed.
No effects were noted up to the highest concentration tested. Based on these findings, the 3-h NOEC was determined at 1000 mg/L (nominal concentration).
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