Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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: 500-165-3 | CAS number: 66455-14-9 1 - 2.5 moles ethoxylated
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
In the key study an EC50 for Daphnia magna of 0.46 mg/L could be determined after 48 h of exposure.
Key value for chemical safety assessment
Additional information
Two GLP-studies on aquatic invertebrates (Daphnia magna) in semi-static systems are available dealing with different degrees of ethoxylation.
In the study of Drottar & Swigert (1995) according to EPA OTS 797.1300 with fatty alcohols of a chain length of C12 - C13 and an degree of ethoxylation of 5 an EC50 of 0.46 mg/L (purity of test material: 100%) was determined. This study was defined as key study.
In another study of Collins (1996) according to the same guideline (EPA OTS 797.1300) for fatty alcohol ethoxylates (C12 - C13, EO 4.5 - 6) an EC50 of 0.59 mg/L (purity of test material: 100%) was determined.
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.
