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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 233-237-5 | CAS number: 10099-58-8
Endpoint summary
Administrative data
Description of key information
Additional information
No guideline laboratory studies for the determination of the adsorption potential of Lanthanum chloride were available. However, data determined in laboratory studies according to natural field situations, which calculated the Koc/Kp-values based on Lanthanum as element (La3 +), were available.
Moermond et al. (2001) derived Koc values for Lanthanum from laboratory assays with natural sediment and pore water taken from the Rhine-Meuse estuary, The Netherlands. The Koc values were calculated in a range of log 5.67 – log 6.92 depending on pH, salinity and addition of phosphate or fluoride and resuspension. Sneller et al. (2001) supported this scale of Koc values (log Kp 4.85 - 6.37), pointing out, that laboratory derived data are about one order of magnitude lower than field derived data. The authors stated that this difference was probably due to disturbance and subsequent oxidation of the sediment in the laboratory experiments, causing relatively high Lanthanum concentrations in the pore water. Generally, when evaluating the partitioning data one must keep in mind that pH, the presence of negative counterions and the concentration of dissolved organic carbon (DOC) in the (pore-) water strongly influence the concentration of Lanthanum in solution. When pH, DOC concentrations and negative counterion concentrations are high, a large part of the total dissolved Lanthanum concentrations may not represent ´true´ partitioning.
However, Lanthanum will be highly adsorbed at the sediment.
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.
