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Heat capacity and thermodynamic properties of crystalline ornidazole (C7H10ClN3O3)
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
2004-05-06
DOI10.1016/j.tca.2003.11.005
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
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WOS记录号WOS:000221436300004
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被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/81469
专题中国科学院大连化学物理研究所
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
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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.
APA Wang, MH.,Tan, ZC.,Sun, XH.,Xu, F.,Liu, YF.,...&Zhang, T.(2004).Heat capacity and thermodynamic properties of crystalline ornidazole (C7H10ClN3O3).THERMOCHIMICA ACTA,414(1),25-30.
MLA Wang, MH,et al."Heat capacity and thermodynamic properties of crystalline ornidazole (C7H10ClN3O3)".THERMOCHIMICA ACTA 414.1(2004):25-30.
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