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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The vapour pressure of a substance is defined as the saturation pressure above a solid or liquid substance. Thus, in this case, vapour pressure of the substance is found to be 0.0000000856 mm Hg or <0.00001141 Pa.

Key value for chemical safety assessment

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

Additional information

The vapour pressure, together with the solubility in water, is the major auxiliary variable for calculating the volatility of a substance from an aqueous solution. Vapour pressure data is required as a pre-requisite for animal as well as environmental studies. It can inform whether a substance may be available for inhalation as a vapour and whether occlusive conditions are necessary for dermal studies.