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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 700-661-1 | CAS number: -
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
Hydrolysis was determined in accordance to OECD Guideline 111. The hydrolysis of PSOA was assessed in aqueous buffers at pH 4, 7 and 9 at 50 ± 0.5 °C. After 5 days PSOA was shown to have hydrolysed by considerably greater than 10% at each pH (equivalent to t0.525°C <1 year). This indicated that PSOA was hydrolytically unstable and significant hydrolysis had occurred at environmentally relevant pH.
Key value for chemical safety assessment
Additional information
Hydrolysis as a function of pH was determined in accordance to OECD Guideline 111. Standard tests for hydrolysis are not typically appropriate for the test item since PSOA is present as a complex reaction product of unknown and variable composition. However, the end-point assay of the hydrolysis test employed a spectrophotometric method for analysis of peroxycarboxylic acids. This endpoint is characterized for representative hydrocarbon structures that comprise the hydrocarbon blocks used to assess the environmental risk of this substance. The hydrolysis of PSOA was assessed in aqueous buffers at pH 4, 7 and 9 at 50 ± 0.5 °C. After 5 days PSOA was shown to have hydrolysed by considerably greater than 10% at each pH (equivalent to t0.525°C<1 year). This indicated that PSOA was hydrolytically unstable and significant hydrolysis had occurred at environmentally relevant pH.
.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.
