Heat Capacity and Enthalpy of Fusion of Crystalline Pyrimethanil Decylate (C22H33N3O2)

Chemical Research in Chinese Universities ›› 2005, Vol. 21 ›› Issue (6): 697-701.

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Heat Capacity and Enthalpy of Fusion of Crystalline Pyrimethanil Decylate (C₂₂H₃₃N₃O₂)

SUN Xiao-hong¹, LIU Yuan-fa², TAN Zhi-cheng³, WANG Mei-han², JIA Ying-qi³

1. College of Chemical Engineering, Chemical Research Institute, Northwest University, Xi'an 710069, P. R. China;
2. Department of Chemistry, Northwest University, Xi'an 710069, P. R. China;
3. Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China

Received:2004-11-25 Online:2005-11-23 Published:2011-08-06
Supported by:
Supported by the National Natural Science Foundation of China(No.20073047) and the Natural Science Foundation of Shanxi Province (No.2001H11)

Abstract

Abstract: Low-temperature heat capacities of pyrimethanil decylate (C₂₂H₃₃N₃O₂) were precisely measured with an automated adiabatic calorimeter over the temperature range from 78 to 373 K.The sample was observed to melt at(311.04 ±0.06) K.The molar enthalpy and entropy of fusion as well as the chemical purity of the compound were determined The extrapolated melting temperature for the absolutely pure compound obtained from fractional melting experiments is (311.204±0.035) K.

Key words: Pyrimethanil decylate, Heat capacity, Adiabatic calorimetry, DSC

SUN Xiao-hong, LIU Yuan-fa, TAN Zhi-cheng, WANG Mei-han, JIA Ying-qi. Heat Capacity and Enthalpy of Fusion of Crystalline Pyrimethanil Decylate (C₂₂H₃₃N₃O₂)[J]. Chemical Research in Chinese Universities, 2005, 21(6): 697-701.

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Heat Capacity and Enthalpy of Fusion of Crystalline Pyrimethanil Decylate (C₂₂H₃₃N₃O₂)

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