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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 233-796-5 | CAS number: 10361-80-5
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Conclusion on classification
Conclusion on classification / Environmental classification justification:
Acute ecotoxicity data are available on two trophic levels. Praseodymium trinitrate is toxic to aquatic invertebrates and very toxic to fish. Even if the study on fish was judged not reliable as performed in conditions minimizing the toxicity (i.e. precipitation cannot be ruled out as no analytical monitoring was performed), some adverse effects were observed giving a LC50 below 1 mg/L and cannot be ignored. On this basis and considering that praseodymium is not subjected to biodegradation due to its inorganic nature, it was decided to apply the following classification: Aquatic acute toxicity cat. 1 (H400) & Aquatic chronic toxicity cat. 1 (H410) under CLP, with acute and chronic M factors of 1
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.
