Registration Dossier
Registration Dossier
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EC number: 618-920-1 | CAS number: 93280-40-1
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
No data
Key value for chemical safety assessment
Additional information
According to Annex XI of regulation (EC) 1907/2006, testing for a specific endpoint may be omitted if testing does not appear to be scientifically necessary or if it is technically not possible to conduct the study as a consequence of the properties of the substance. Under REACH (ECHA 2017, Chapter R.7B – Endpoint Specific Guidance), the term ‘Hydrolysis’ refers to the “Decomposition or degradation of a chemical by reaction with water”, and this as a function of pH (i.e., abiotic degradation). In the case of inorganic substances, like vanadylhydrogenphosphate-hemihydrate (CAS no. 93280-40-1), the chemical safety assessment is generally based on total elemental metal concentrations, regardless of their (pH-dependent) speciation in the environment. Therefore, physicochemical processes like degradation or transformation by reaction with water are judged not relevant. Depending on the prevailing environmental conditions, formation of different V-species may occur, but the chemical assessment will not make any differentiation among the different V-species. This total, elemental-based assessment (pooling all speciation forms together) can be considered as a worst-case assumption for the chemical assessment. In conclusion, (abiotic) degradation is an irrelevant process for inorganic substances that are assessed on an elemental basis.
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.
