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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 209-599-5 | CAS number: 587-26-8
Toxicity to terrestrial arthropods
Administrative data
Link to relevant study record(s)
Description of key information
Test substance is a mixture of rare earth chloride hexahydrate:
LC50(72 h) > 3000 mg/L for Holotrichia parallela, larvae third stage (filter paper contact test)
NOEC(until adult eclosion) > 3000 mg/L for Holotrichia parallela, larvae third stage (prolonged soil test)
Key value for chemical safety assessment
Additional information
No information is available on the toxicity to terrestrial arthropods with Lanthanum carbonate, but data are available for this endpoint with a mixture of rare earth chloride hexahydrate (Li et al. 2006). The mixture was composed mainly of Cerium, Lanthanum and Praseodymium, the fractions of individual rare earth elements were not given.
The short-term toxicity of a mixture of rare earth chloride hexahydrate on Holotrichia parallela (Coleoptera, larvae in the third stage) was tested in a filter paper contact test, yielding a LC50 > 3000 mg/L.
In a prolonged soil test groups of larvae (Holotrichia parallela) at the third larval stage were kept in the soil, spiked with mixed rare earth chloride hexahydrate. The exposure lasted until adult eclosion. Mortality, pupation and emergence were assessed after the exposure and revealed a NOEC value of > 3000 mg/kg soil.
Although the test substance was a mixed rare earth chloride hexahydrate with Cerium, Lanthanum and Praseodymium as rare earth elements, and therefore a calculation of a NOEC value in mg La/kg dw is not possible, the overall high concentration without effects on mortality, emergence or pupation could be used for the assessment of the effect of Lanthanum carbonate on terrestrial arthropods as a worst case scenario.
Further information about the analogue source substances is given in the data matrix of the justification for the analogue approach, which can be found either in the CSR or as attachment in Iuclid section 13.
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.
