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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 249-109-7 | CAS number: 28629-66-5
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
Hydrolysis study is waived.
Key value for chemical safety assessment
Additional information
In accordance with column 2 of REACH Annex VIII, section 9.2.2.1, the study does not need to be conducted because of the low water solubility of the substance (32.9 mg/L]). In accordance with Annex XI the study does not need to be conducted if it is not scientifically possible to perform the test due to the properties of the test substance or because of analytical limitations of test methods. The 31P-NMR method, typically applied to direct analysis of zinc dialkyldithiophosphates, permits analysis of the substance through quantitation of the dithiophosphate functional group and identification of hydrolysis products based on shifts of this group in the NMR spectrum. OECD 111 guidelines for hydrolysis testing require use of the substance at a concentration of 0.01M or half the saturation concentration and sensitivity to detect a ≤ 10% change in the initial concentration of the substance . Because of the low water solubility of the substance, detection and quantitation of changes in concentration at the levels required by the OECD 111 guideline is beyond the sensitivity of the analytical method.
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.
