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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 241-165-0 | CAS number: 17096-07-0
Endpoint summary
Administrative data
Description of key information
3-[3,3,3-Trimethyl-1,1-bis[(trimethylsilyl)oxy]disiloxanyl]propyl methacrylate is a liquid at ambient temperature and pressure, with a measured freezing point of <-100°C and a measured boiling point of 292.7°C. It has a relative density of 0.925 at 20°C, a kinematic viscosity of 4.91 mm2/s at 20°C and measured vapour pressure values of 0.11 Pa at 20°C, 0.38 Pa at 30°C and 4.8 Pa at 50°C.
The substance is not classified for flammability on the basis of a measured flash point of 142.5°C and measured boiling point of 292.7°C. It has a measured auto-ignition temperature of 354°C, and is not explosive and not oxidising on the basis of chemical structure.
In contact with water, the substance reacts slowly, half-lives of 3.6 hours at pH 4, 630 hours at pH 7 and 5.3 hours at pH 9 and 20-25°C. The stated half-life is for removal of parent substance. Complete reaction to the ultimate end products will take longer. The reaction equation is shown below:
C16H38O5Si4 + 2H2O → C7H14O5Si + 3(CH3)3SiOH
The substance has a predicted water solubility of 5.8E-05 mg/l at 20°C and a predicted log Kow of 9 at 20°C. The substance is not surface active based on examination of the chemical structure.
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.
