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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 402-810-3 | CAS number: 17980-47-1 DYNASILAN BH N; DYNASILAN BSM 100 N; DYNASILAN NH 42
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
Water Solubility (triethoxyisobutylsilane): 212 mg/l at 20°C (OECD 105)
Water Solubility (isobutylsilanetriol): Miscible at 20°C
Key value for chemical safety assessment
Additional information
A water solubility value of 212 mg/l is reported in a study conducted according to an abbreviated test protocol similar to the preliminary test defined in OECD 105. The value obtained is considered reliable as an estimate of the solubility of the substance and is selected as key study.
In the same report, a second water solubility value of 86 mg/l was determined for the test substance according to OECD 105. However, the test substance is hydrolytically unstable over the time-scale of this test and a non-specific analysis method was used. Therefore, it is not possible to reliably interpret the results and this value is disregarded.
A predicted water solubility of 150 mg/l has been obtained using an appropriate QSAR method. This value supports the key study.
The water solubility of the silanol hydrolysis product has been calculated using a validated QSAR. The silanol is predicted to be miscible with water; however, silanetriols may undergo condensation reactions to give siloxane dimers, oligomers and polymers; this will limit its solubility in practice.
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.
