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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 217-007-1 | CAS number: 1719-58-0
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
Vapour pressure [chloro(dimethyl)vinylsilane]: 9500 Pa at 20°C, 12000 Pa at 25°C and 22000 Pa at 40°C (EU Method A.4)
Vapour pressure [dimethyl(vinyl)silanol]: 250 Pa at 25°C (QSAR).
Key value for chemical safety assessment
- Vapour pressure:
- 9 500 Pa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure of chloro(dimethyl)vinylsilane has been determined using isoteniscope method in accordance with EU Method A.4 and OECD 104 test method and in compliance with GLP. Vapour pressure values at 20°C, 25°C, 30°C, 40°C and 50°C of 9500 Pa, 12000 Pa, 15000 Pa, 22000 Pa and 32000 Pa respectively were extrapolated from a temperature range of 58 - 73°C. The result is considered to be reliable and selected as key study. The key study was supported by a vapour pressure of 8900 Pa at 20°C which was determined for the substance using dynamic method according to EU Method A.4 test method. In a secondary source to which reliability could not be assigned, a vapour pressure of 82000 Pa at 20°C was reported for the submission substance. The results are in reasonable agreement with the key study.
In contact with water, chloro(dimethyl)vinylsilane reacts very rapidly to form dimethyl(vinyl)silanol and hydrochloric acid. The vapour pressure of the silanol hydrolysis product [dimethyl(vinyl)silanol] was determined to be 250 Pa at 25°C using an appropriate QSAR estimation method.
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.
