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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane: 0.46 Pa at 25°C (QSAR)

Vapour pressure 2-(3,4-epoxycyclohexyl)ethylsilanetriol: 7.5E-06 Pa at 25°C (QSAR)

Vapour pressure methanol: 12790 Pa at 20°C (OECD 2004)

Key value for chemical safety assessment

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

Additional information

A predicted vapour pressure value of 0.46 Pa at 25°C has been obtained for the substance using a validated QSAR estimation method. The result is considered to be reliable and is selected as key study. In a secondary source to which reliability could not be assigned, a limit vapour pressure value of <1.33 hPa at 20°C was reported for the substance.

In contact with water, the submission substance hydrolyses rapidly to form 2-(3,4-epoxycyclohexyl)ethylsilanetriol and methanol. The vapour pressure of the silanol hydrolysis product was estimated to be 7.5E-06 Pa at 25°C using a validated QSAR estimation method.

Methanol has a reported vapour pressure of 12790 Pa at 20°C (OECD 2004. SIDS Initial Assessment Report for SIAM 19, Berlin, Germany, 18-20 October 2004, Methanol, CAS 67-56-1)