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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 231-104-6 | CAS number: 7439-95-4
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
Water solubility of magnesiums under O2 and CO2 exclusion: 6.7 mg/L at 21 °C (pH 10.8)
Transformation/Dissolution screening test in media of pH 6 and 8: > 100 mg/L at 21°C (pH 10.0)
Key value for chemical safety assessment
Additional information
For water solubility testing, dest. water is used while for T/D the test media exists of a defined composition of metal salts (e.g. NaHCO3, KCl, CaCl2, CaSO4) which leads to an increase of dissolved magnesium in solution. The T/D testing is needed for read across argumentation using environmental studies performed with different magnesium salts and could be regarded as valid to fulfill the endpoint "water solubility" under REACH.However, it is known from published data that magnesium is only slightly soluble in water, since forming of magnesium hydroxide at the surface of solid magnesium particles avoids further dissolution; it was decided to perform water solubility testing in accordance to OECD 105 for consistency reasons.
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.
