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Vapour pressure

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Description of key information

The vapour pressure is < 2.13E-3 Pa at 25 °C.

Key value for chemical safety assessment

Additional information

There is no experimental data for the vapour pressure available.

The key value for the vapour pressure is estimated by using a category approach based on the available data for its main constituents (> 10%), from C12 to C18 even numbered fatty acids and C18 unsaturated fatty acids. C12 Lauric acid (CAS 143-07-7) had the highest vapour pressure of these consitutents (see explanation below).

According to the theoretical principle of Raoult’s law, the vapour pressure of mixture is equal to the mole-fraction-weighted sum of the components' vapour pressures:

ptot= ∑ pixi

The vapour pressure of mixture should be lower than the vapour pressure of the component which has the highest vapour pressure in its pure form (C12).