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题名: Heat capacity and thermodynamic properties of 2,4-dichlorobenzaldehyde (C7H4Cl2O)
作者: Wang, SX;  Tan, ZC;  Di, YY;  Xu, F;  Zhang, HT;  Sun, LX;  Zhang, T
关键词: 2,4-dichlorobenzaldehyde ;  heat capacity ;  adiabatic calorimetry ;  purity determination ;  DSC analysis
刊名: JOURNAL OF CHEMICAL THERMODYNAMICS
发表日期: 2004-05-01
DOI: 10.1016/j.jct.2004.01.006
卷: 36, 期:5, 页:393-399
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Thermodynamics ;  Chemistry, Physical
研究领域[WOS]: Thermodynamics ;  Chemistry
英文摘要: Heat capacities of 2,4-dichlorobenzaldehyde have been measured with a high-precision automatic adiabatic calorimeter over the temperature range from (79 to 371) K. The melting temperature, molar enthalpy, and entropy of fusion were determined by the heat capacity measurements to be (347.24 +/- 0.13) K, (20468 +/- 19) J (.) mol(-1), and (58.94 +/- 0.04) J (.) K-1 (.) mol(-1), respectively. The melting temperatures for the sample and the absolutely pure compound have been obtained from fractional melting experiments to be (347.230 and 347.619) K, respectively, and the chemical purity of the sample was calculated to be 0.9921 mol fraction according to the Van't Hoff equation. Moreover, the solid-to-liquid phase transition of the substance was further investigated by using DSC technique. The results obtained from the heat capacity measurements were in agreement with those from the DSC analysis. (C) 2004 Elsevier Ltd. All rights reserved.
语种: 英语
WOS记录号: WOS:000221042400005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139519
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China

Recommended Citation:
Wang, SX,Tan, ZC,Di, YY,et al. Heat capacity and thermodynamic properties of 2,4-dichlorobenzaldehyde (C7H4Cl2O)[J]. JOURNAL OF CHEMICAL THERMODYNAMICS,2004,36(5):393-399.
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