Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 201-121-3
CAS number: 78-50-2
A study was
conducted to determine the toxicity of the test substance to
microorganisms using activated sludge respiration inhibition test
according to OECD Guideline 209 and EU Method C.11, in compliance with
GLP. The study was conducted under static conditions using freshwater
media. Test organisms were exposed to the test substance at loading
rates of 0, 10, 100 and 1,000 mg /L. The total exposure period was 3 h
and the oxygen consumption was recorded for a period of approximately 10
minutes post exposure. 3,5-dichlorophenol was used as positive control.
No inhibition of the respiration rate of the sludge was recorded at any
of the loading rates. The EC50of 3,5-dichlorophenol was in
the accepted range of 2 to 25 mg/L for total respiration (7.8 mg/L).
Under the study conditions, the test substance was not toxic to waste
water bacteria (activated sludge) at a loading rate of 1,000 mg/L
(NOEL). The EL50was therefore above 1,000 mg/L (Soeter M,
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again