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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 [Decahydroxytetrasilane]: <1E-06 Pa at 25 °C (QSAR) - initial hydrolysis product

Vapour pressure [Monosilicic Acid]: <1E-06 Pa at 25 °C (QSAR) - ultimate hydrolysis product

Key value for chemical safety assessment

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

Additional information

The vapour pressure has been obtained for the hydrolysis products using an appropriate calculation method:

Vapour pressure [Decahydroxytetrasilane]: <1E-06 Pa at 25 °C (QSAR) - initial hydrolysis product

Vapour pressure [Monosilicic Acid]: <1E-06 Pa at 25 °C (QSAR) - ultimate hydrolysis product

The method has not been validated for inorganic substances but gives an indication of very low vapour pressure. Neither hydrolysis product has been isolated and the predicted values are included for completeness only.