Heat Capacity, Density, Vapor Pressure, and Enthalpy of Vaporization of Propyl Cinnamate

Abstract

The density and liquid heat capacity of propyl cinnamate were measured in the temperature range from 290.15 to 503.15 K by a pycnometer and automatic adiabatic calorimeter and correlated with temperature by the linear equation and quadratic polynomial, respectively. Vapor pressure data of propyl cinnamate were determined by the ebulliometric method at 419.15–559.15 K, and they are in accordance with the Antoine equation. The vaporization enthalpy Δvap H (T b) of propyl cinnamate at normal boiling point was attained based on the Clausius–Clapeyron equation. The standard enthalpy of vaporization Δvap H (298.15 K) was calculated by the Othmer method and verified by the Watson relation.

Density, Vapor Pressure, Enthalpy of Vaporization, and Heat Capacity of (E,E)-Methyl Sorbate

“…The temperature increment and heating rate were maintained at 5 K and 0.5 K/min, respectively. The reliability of this method has been verified in previous studies. , …”

“…The reliability of this method has been verified in previous studies. 21,24 ■ RESULTS AND DISCUSSION Density of MS. The density of MS was measured by a 10 mL pycnometer in the temperature range of 286.35−433.25 K. The detailed results are displayed in Figure 1 and Table 2.…”