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EC number: 258-904-8
CAS number: 53988-10-6
Data on aquatic effects of the substance are available on three trophic
levels (fish, daphnia and algae) for acute and chronic toxicity. Acute
toxicity to fish (Danio rerio) was determined according to "Letale
Wirkung beim Zebrabärbling -Brachydanio rerio-". During 96 hours
exposure the LC0 was measured at 22 mg/L and LC100 at 63 mg/L; and
goemetric mean LC0/LC100 was calculated at 37.2 mg/L.
Concerning the toxicity towards aquatic invertebrates, an acute toxicity
test to Daphnia magna was determined according to OECD Guideline 202
(Daphnia sp. Acute Immobilisation Test). As analytical monitoring was
performed showing stability of the test substance, the result of EC 50
1.9 mg/L relates to nominal concentrations.
The most sensitive toxicity was observed for chronic toxicity to daphnia
magna. The Chronic toxicity of the substance to invertebrates (Daphnia
magna) was conducted under Semi-Static Reproduction test according to
OECD Guideline 211. After 21 days of exposure an NOEC of 0.0346 mg/L
(measured) was obtained.
The acute toxicity of the substance to alga (Desmodesmus subspicatus was
tested according to OECD guideline 201 ' Alga, Growth Inhibition Test'
(2006). During 72 hours exposure an EC50 of 62.24 mg/L and a NOEC of
50.0 mg/L was calculated.
The effect of the substance towards the growth of activated sludge was
investigated according to OECD Guideline 209 (Activated Sludge,
Respiration Inhibition Test). The test item showed 43 % and 44.4 %
respiration inhibition of activated sludge at the highest test item
concentration of 10000 mg/L. An EC50 of >10000 mg/L were obtained in
this test. The effect value relates to nominal concentration, since no
analytical monitoring was performed.
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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