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EC number: 236-704-1
CAS number: 13465-77-5
Vapour pressure [hexachlorodisilane]: 280 Pa at 25°C (QSAR)
Vapour pressure [Hexahydroxydisilane]: <1E-06 Pa at 25 °C (QSAR)
Vapour pressure [Monosilicic Acid]: <1E-06 Pa at 25 °C (QSAR)
A predicted vapour pressure value of 280 Pa at 25°C, based on a boiling
point of 146°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 secondary sources to which reliability could
not be assigned, a vapour pressure value of 1600 Pa at 20°C was reported
for the substance.
The vapour pressure has been obtained for the hydrolysis products using
an appropriate calculation method:
Vapour pressure [Hexahydroxydisilane]: <1E-06 Pa at 25 °C (QSAR) -
initial hydrolysis product
Vapour pressure [Monosilicic Acid]: <1E-06 Pa at 25 °C (QSAR) - ultimate
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.
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.
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