Molar heat capacity and thermodynamic properties of 1,2-cyclohexane dicarboxylic anhydride [C8H10O3]

X. Lv; X. Gao; Z. Tan; Y. Li; L. Sun

doi:10.1007/s10973-007-8445-5

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Journal of Thermal Analysis and Calorimetry

Volume/Issue:: Volume 92: Issue 2

Molar heat capacity and thermodynamic properties of 1,2-cyclohexane dicarboxylic anhydride [C₈H₁₀O₃]

Authors: X. Lv¹, X. Gao¹, Z. Tan, Y. Li³, and L. Sun²

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¹ Liaoning Shihua University School of Chemistry and Material Science Fushun 113001 China
² Dalian Institute of Chemical Physics, Chinese Academy of Science Thermochemistry Laboratory Dalian 116023 China
³ Dalian Jiaotong University College of Environmental Science & Engineering Dalian 116028 China

DOI:: https://doi.org/10.1007/s10973-007-8445-5

Page Count:: 523–527

Publication Date:: 01 May 2008

Online Publication Date:: 22 Jun 2008

Article Category:: Research Article

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Abstract

The molar heat capacity C_p,m of 1,2-cyclohexane dicarboxylic anhydride was measured in the temperature range from T=80 to 390 K with a small sample automated adiabatic calorimeter. The melting point T_m, the molar enthalpy Δ_fusH_m and the entropy Δ_fusS_m of fusion for the compound were determined to be 303.80 K, 14.71 kJ mol⁻¹ and 48.43 J K⁻¹ mol⁻¹, respectively. The thermodynamic functions [H_T-H_273.15] and [S_T-S_273.15] were derived in the temperature range from T=80 to 385 K with temperature interval of 5 K. The thermal stability of the compound was investigated by differential scanning calorimeter (DSC) and thermogravimetry (TG), when the process of the mass-loss was due to the evaporation, instead of its thermal decomposition.