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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 231-927-0 | CAS number: 7779-31-9
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
A hydrolysis as a function of pH study was conducted on the analogue substance 3,3,5 -trimethylcyclohexyl acrylate (CAS 86178 -38 -3) in accordance with the OECD 111 Test Guideline and GLP requirements.
The preliminary study indicated that the analogue substance was unstable under all conditions (pH 1.2 at 37°C; pH 4.0, 7.0, 9.0 at 50°C). According to the results of the definitive test, recoveries show that equilibrium states were reached (0-20% hydrolysis) at several conditions: pH4 at 20, 50 and 70°C ; pH7 at 20 and 50°C and pH9 at 20°C.
The results above lead to the conclusion that, under most environmentally-relevant conditions, hydrolysis occurs to some degree but cannot be considered a major degradation pathway for the test substance.
Finally, the identification of hydrolysis products (Tier 3) was carried out with the condition pH 1.2 at37°C and pH9 at 70°C. GC-MS and ionic chromatography analysis allowed to observe cis-3,3,5-trimethylcyclohexanol (CAS 933-48-2) and acrylic acid (CAS 79 -10 -7) as degradation products. GCMS and HPLC-HRMS analysis in scan mode did not show other degradation products. Similarly, for 3,3,5 -trimethylcyclohexyl methacrylate, it is expected that hydrolysis leads to the formation of 3,3,5-trimethylcyclohexanol and methacrylic acid (CAS 79-41-4), albeit at a relatively slow pace under most environmentally-relevant conditions.
Key value for chemical safety assessment
Additional information
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.
