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EC number: 245-844-2
CAS number: 23726-93-4
OECD Guideline 209, GLP, key study, validity 1:3h-NOEC = 32 mg/L;3h-EC50 = 275 mg/L (95% CI: 214 -339 mg/L).
assess the toxicity of the registered substance to microorganisms, one
experimental study is available.
valid study was performed according to OECD Guideline 209 with GLP
statement to assess the effect of the registered substance on the
respiration rate of activated sludge. The
test was carried out under static conditions with the test item
concentrations 10, 32, 100, 320 and 1000 mg/L. The respiration rates of
the control, reference and test item replicates were measured after a
contact time of three hours, and the inhibitory effects of the test and
reference item (copper (II) sulphate pentahydrate) were determined in
comparison to the control respiration rates. The
mean inhibition of respiration for the test item replicates were -3, 2,
12, 53 and 58% at 10, 32, 100, 320 and 1000 mg/L, respectively. The
EC50-value for the reference item was 101 mg/L. Under
the test conditions, the NOEC of test item is 32 mg/L. The test item is
not toxic up to the concentration of 32 mg/L to activated sludge of a
municipal sewage treatment plant. The EC10 is 93.9 mg/L (95% CI: 81.5
and the EC50 is 275 mg/L (95% CI: 214 -339 mg/L) of the test item.
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.
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