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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 242-171-6 | CAS number: 18293-82-8
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
Vapour pressure [isobutyl(dimethoxy)methylsilane]: 310 Pa at 25°C (QSAR)
Vapour pressure [isobutyl(methyl)silanediol]: 0.33 Pa at 25°C (QSAR)
Vapour pressure [methanol]: 12790 Pa at 20°C (measured)
Key value for chemical safety assessment
- Vapour pressure:
- 310 Pa
- at the temperature of:
- 25 °C
Additional information
A vapour pressure value of 310 Pa at 25°C was obtained using an accepted calculation method. The result is considered to be reliable.
In contact with water, isobutyl(dimethoxy)methylsilane hydrolyses rapidly to produce isobutyl(methyl)silanediol and methanol.
The vapour pressure of isobutyl(dimethoxy)methylsilane is predicted to be 310 Pa at 25°C, based on a measured boiling point of 144°C.
A vapour pressure value of 0.33 Pa at 25°C has been determined for isobutyl(methyl)silanediol using an appropriate estimation method. The result is considered to be reliable.
Methanol has a reported vapour pressure value of 12790 Pa at 20°C (OECD (2004))
OECD (2004): SIDS Initial Assessment Report for SIAM 19, Berlin, Germany, 18-20 October 2004, Methanol, CAS 67-56-1
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.
