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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Physical & Chemical properties

Vapour pressure

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Description of key information

Vapour pressure (trimethoxy(2-methylpropyl)silane: 190 Pa at 25°C (QSAR)
Vapour pressure ((2-methylpropyl)silanetriol): 0.00294 Pa at 25°C (QSAR)

Key value for chemical safety assessment

Vapour pressure:
190 Pa
at the temperature of:
25 °C

Additional information

A vapour pressure of 190 Pa at 25°C was determined for the substance using an appropriate QSAR predictive method. The result is considered to be reliable and is selected as key. Trimethoxy(2-methylpropyl)silane was reported to have a vapour pressure value of 300 Pa at 20°C in a secondary source to which no reliability could be assigned. This value supports the key study.

The vapour pressure of the hydrolysis product was determined to be 0.0029 Pa at 25°C using an appropriate QSAR estimation method.

A measured vapour pressure of 12 790 Pa at 20°C is available for methanol (OECD, 2004)