Registration Dossier
Registration Dossier
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EC number: 270-298-7 | CAS number: 68424-37-3
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
The vapour pressure is 1.87E-4 Pa at 25 °C.
Key value for chemical safety assessment
Additional information
The key value for vapour pressure is estimated by using a category approach based on the available data the main constituents, C14 Myristic acid (CAS 544-63-8), C16 Palmitic acid (CAS 57-10-3) and C18 Stearic acid (CAS 57-11-4). C14 Myristic acid had the highest vapour pressure of these constituents (see explanation below). In addition an experimental value for Fatty acids, C16-22 was available, however, was not respected due to its value well above the actual vapour pressure (vapour pressure < 1 Pa).
According to the theoretical principle of Raoult’s law, the vapour pressure of a mixture is equal to the mole-fraction-weighted sum of the components' vapour pressures:
ptot= ∑ pixi
The vapour pressure of the mixture should be lower than the vapour pressure of the component which has the highest vapour pressure in its pure form (C14).
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.
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