CALCULATION OF VAPOR PRESSURES FROM MODEL FRAGRANCE EMULSIONS DURING EVAPORATION

Abstract

The vapor pressure data from previous publications of a model fragrance emulsion system consisting of water, an aromatic fragrance phenethyl alcohol, an aliphatic one limonene, and a nonionic surfactant Laureth 4, were used to calculate the variation in vapor pressures of both fragrances and water during free evaporation. The evaporation path in a three-dimensional four-component phase diagram was estimated from the vapor pressures.

The results showed as expected that the high note fragrance compound evaporates first followed by water and the low note one. Unexpectedly, it was found that vapor pressure of low note fragrance, phenethyl alcohol, is significantly increased during evaporation.

Keywords:

• Vapor Pressure
• Fragrance emulsion
• Evaporation
• Surfactant Association Structures
• Detergents