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Thermal properties of ethyl undecanoate and ethyl tridecanoate by adiabatic calorimetry
J.C. van Miltenburg and P.J. van Ekeren
(J. Chem. Eng. Daga, 50 (2005), 1348-1352)
Abstract
The heat capacity of ethyl undecanoate was measured between 110 K and 365 K; the compound crystallized in a metastable form, which recrystallized slowly to the stable crystalline state during heating. The triple-point temperature of the stable form was found to be (259.17 ± 0.04) K, and the enthalpy of fusion was (36.1 ± 0.1) kJ·mol-1. The purity calculated from the fractional melting curve was 97.5 mol %. The metastable form crystallized at 251.3 K. The heat capacity of ethyl tridecanoate was measured between 175 K and 320 K; the compound also crystallized in a metastable form, which recrystallized during heating to the stable form. The triple-point temperature was found to be (272.4 ± 0.1) K, and the enthalpy of fusion was (40.7 ± 0.1) kJ·mol-1.
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Last updated: August 25, 2005.
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