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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 237-059-9 | CAS number: 13597-86-9
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
Assessment of hydrolytic stability using the regulatory method presented in Method C7 Abiotic Degradation, Hydrolysis as a Function of pH of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 111 of the OECD Guidelines for Testing of Chemicals, 13 April 2004, was not considered feasible for this test item.
Key value for chemical safety assessment
Additional information
The hydrolytic half-life was determined for tetrapotassium pyrophosphate (EC No: 230 -785 -7). The ionic substance was assumed to undergo dissociation in aqueous solutions (resulting in potassium cations and pyrophosphate anions) therefore the cation was assumed to have a negligible influence on the rate of hydrolysis of the anion. This is expected to be replicated at environmentally relevant concentrations and on dissolution into complex environmental matrices. Although cation of the final matrix may retain some minor influence on the hydrolytic rate, such a relationship is considered beyond the scope of a standard test method and would not have been addressed or identified when testing in accordance with OECD method 111.
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.
