The density and the heat capacity of (E,E)-methyl sorbate (MS) were measured from 286.35 to 433.25 K using a pycnometer and an adiabatic calorimeter, respectively. The saturated vapor pressure of MS was determined by the ebulliometric method from 344.95 to 455.15 K and correlated by the Antoine equation with an average relative deviation of 1.68%. The enthalpy of vaporization of MS at the normal boiling point was figured out to be 44.29 kJ mol^–1 according to the Clausius–Clapeyron equation. Based on the Othmer method, the standard enthalpy of vaporization of MS was obtained using three substances as a reference, and the calculated results were further verified by the Watson relation and the Clarke–Glew equation.

中文翻译：

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(E,E)-山梨酸甲酯的密度、蒸气压、汽化焓和热容

使用比重瓶和绝热量热计分别在 286.35 至 433.25 K 范围内测量( E , E )-山梨酸甲酯 (MS)的密度和热容。通过沸点法测定了MS的饱和蒸气压，范围为344.95至455.15 K，并通过Antoine方程进行关联，平均相对偏差为1.68%。根据Clausius-Clapeyron方程计算出MS在常沸点的汽化焓为44.29 kJ mol ^–1 。基于Othmer方法，以三种物质为参考，得到了MS的标准汽化焓，并通过Watson关系式和Clarke-Glew方程进一步验证了计算结果。