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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 939-125-9 | CAS number: -
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
The parent material, 3-(triethoxysilyl)propan-1-amine, hydrolyses rapidly in water to form the substance hydrolysis product of 3-(triethoxysilyl)propan-1-amine >0.1 -<16% (EC no. 939-125-9). The hydrolytic reaction of 3-aminopropyltriethoxysilane is always accompanied by self-condensation processes (Brochier Salon et. al. 2010; Brochier Salon et al, 2008; Shi et al. 2012; Paquet et al. 2012). Therefore, the substance hydrolysis products of 3-(triethoxysilyl)propan-1-amine consists of not only silanol and ethanol which are formed directly from hydrolysis, but also several condensation products, such as dimers, trimers as well as oligomeric siloxanes. Furthermore, the experimental results on removal of water show water cannot be separated from the substance without affecting the stability or changing the substance composition (Chemetall 2015). Taking all these into consideration the substance firstly represents already a hydrolysis product and secondly testing for further hydrolytic reactions is not possible due to the complexity and instability of the substance itself. In addition, the substance is regarded as readily biodegradable. In accordance with column 2 of Annex VIII 9.2.2.1 of Regulation (EC) No 1907/2006, testing for hydrolysis is not required if the substance is readily biodegradable.
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.
