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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 268-440-8 | CAS number: 68084-49-1
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Aquatic toxicity data are not available for cerium neodecanoate. Therefore, read-across to the assessment entities cerium cations and neodecanoic acid anions is applied since, upon dissolution of cerium neodecanoate, cerium cations and neodecanoate anions determine fate and toxicity in the environment.
Reliable data for soluble cerium substances indicate a EC50 value of 6.9 mg Ce/L for the immobilisation of the freshwater invertebrate Daphnia magna according to OECD guideline 202. Acute toxicity of neodecanoic acid (versatic 10) also measured by immobility of the water flea (Daphnia magna) was evaluated in freshwater and a 48-h LL50 of >1000 mg/L was derived. Thus, cerium neodecanoate appears to have some potential for toxicity to aquatic invertebrates based on the toxicity of its dissociation products.
Key value for chemical safety assessment
Additional information
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.
