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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 236-826-5 | CAS number: 13499-05-3
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
According to column 2 (section 7.7 Annex VII) of the REACH regulation on standard information requirements, the study does not need to be conducted if the substance is hydrolytically unstable. Reactivity with water has been investigated by CITOX (see section 5.1.2), the conclusion is that the test item was found to be hydrolyzed within less than 5 seconds when introduced in an aqueous medium at room temperature, according to the reaction: HfCl4 + H20 -->HfOCl2 + 2 HCl. This reaction is rapid and the decomposition occurred together with evolution of hydrogen chloride. Therefore, water solubility testing does not need to be conducted.
For assessment purpose, the solubility value has been set to the HfO2 water solubility : below 5 µg/L.
Key value for chemical safety assessment
- Water solubility:
- 5 µg/L
- at the temperature of:
- 20 °C
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.
