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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.