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EC number: 276-038-9
CAS number: 71808-53-2
The EC50 (3 h) was determined to be 28.8 mg a.s./L in an OECD test 209 (GLP, reliability 1). The EC10 (3h) was 10.9 mg a.s./L.
studies are available on the toxicity to micro-organisms. The study by
Kay (1959) was assigned reliability 3 because of missing data, lack of
information on test material identity, composition, phys chem
properties, analytics, culture of micro-organisms. The key study was
performed with the substance as registered (quatenary ammonium
compounds, C12 -18 -alkylbis(hydroxyethyl)methyl, chloride) according to
OECD TG 209 using activated sludge, and in compliance with the OECD
principles of Good Laboratory Practice (reliability 1).
toxicity of quatenary ammonium compounds, C12 -18
-alkylbis(hydroxyethyl)methyl, chloride to activated sludge was
determined by measuring the inhibition of the respiration at a contact
time of 3 hours. The EC50 is 29 mg/L with 95% confidence limits of 15
and 56 mg/L. The corresponding EC10 is 11 mg/L. Based on active
substance the EC50 = 28.8 mg/L with 95% confidence limits of 14.9 and
55.7 mg/L. The EC10 is 10.9 mg a.s./L
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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