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题名: Heat capacity and thermodynamic properties of crystalline ornidazole (C7H10ClN3O3)
作者: Wang, MH;  Tan, ZC;  Sun, XH;  Xu, F;  Liu, YF;  Sun, LX;  Zhang, T
关键词: ornidazole ;  heat capacity ;  thermodynamic functions ;  adiabatic calorimetry ;  TG ;  DSC
刊名: THERMOCHIMICA ACTA
发表日期: 2004-05-06
DOI: 10.1016/j.tca.2003.11.005
卷: 414, 期:1, 页:25-30
收录类别: SCI
文章类型: Article
项目归属: 1504,1501
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical ;  Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The molar heat capacities of 1-(2-hydroxy-3-chloropropyl)-2-methyl-5-nitroimidazole (Ornidazole) (C7H10CIN3O3) with purity of 99.72mol% were measured with an adiabatic calorimeter in the temperature range between 79 and 380K. The melting-point temperature, molar enthalpy Delta(fus)H(m), and entropy, Delta(fus)S(m), of fusion of this compound were determined to be 358.59 +/- 0.04K, 21.38 +/- 0.02 kJ mol(-1) and 59.61 +/- 0.05 J K-1 mol(-1), respectively, from fractional melting experiments. The thermodynamic function data relative to the reference temperature (298.15 K) were calculated based on the heat capacities measurements in the temperature range from 80 to 380 K. The thermal stability of the compound was further investigated by DSC and TG. From the DSC curve an intensive exothermic peak assigned to the thermal decomposition of the compound was observed in the range of 445-590 K with the peak temperature of 505 K. Subsequently, a slow exothermic effect appears when the temperature is higher than 590 K, which is probably due to the further decomposition of the compound. The TG curve indicates the mass loss of the sample starts at about 440K, which corresponds to the decomposition of the sample. (C) 2003 Elsevier B.V. All rights reserved.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000221436300004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/81469
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
2.NW Univ Xian, Coll Chem Engn, Xian 710069, Peoples R China

Recommended Citation:
Wang, MH,Tan, ZC,Sun, XH,et al. Heat capacity and thermodynamic properties of crystalline ornidazole (C7H10ClN3O3)[J]. THERMOCHIMICA ACTA,2004,414(1):25-30.
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