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Thermodynamic study of methyl N-(4,6-dimethoxypyrimidin-2-yl)carbamate
Xing, J; Tan, ZC; Di, YY; Sun, XH; Sun, LX; Zhang, T
关键词Adiabatic Calorimetry Methyl N-( 4 Low-temperature Heat Capacity 6-dimethoxypynimidin-2-yl) Carbamate Thermodynamic Function Tg-dtg Dsc
刊名ACTA CHIMICA SINICA
2004-12-28
62期:24页:2415-2420
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]HEAT-CAPACITY MEASUREMENTS ; ADIABATIC CALORIMETER ; SMALL SAMPLES
英文摘要The low-temperature heat capacities of the methyl N-(4, 6-dimethoxypyrimidin-2-yl) carbamate were measured with an automatic adiabatic calorimeter over the temperature range from 80 to 380 K. A solid-liquid phase transition was observed at T-m = (357.201 +/- 0.080) K, and the molar enthalpy and entropy of fusion were determined to he (26.289 +/- 0.029) kJ. mol(-1) and (73.597 +/- 0.070) J.K-1.mol(-1) mol(-1), respectively. The purity, the real melting point (T-1) and the ideal melting point without any impurity or with absolute purity (T-0) of the compound under investigation were determined to be 99.10 mol%, 357.085 and 357.449 K, respectively, through fractional melting method. The thermodynamic functions relative to the reference temperature 298.15 K were derived based on the heat capacity measurements. Further research on thermodynamic properties of this compound was carried out by means of TG-DTG and DSC techniques. The boiling point and the enthalpy of evaporation for the compound were determined to be 488.06 K and 81.73 kJ.mol(-1), respectively.
语种英语
WOS记录号WOS:000225983900009
引用统计
被引频次:2[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/321008/139509
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.Dalian Univ Technol, Dept Chem & Chem Engn, Dalian 116622, Peoples R China
3.NW Univ Xian, Dept Chem, Xian 710069, Peoples R China
推荐引用方式
GB/T 7714
Xing, J,Tan, ZC,Di, YY,et al. Thermodynamic study of methyl N-(4,6-dimethoxypyrimidin-2-yl)carbamate[J]. ACTA CHIMICA SINICA,2004,62(24):2415-2420.
APA Xing, J,Tan, ZC,Di, YY,Sun, XH,Sun, LX,&Zhang, T.(2004).Thermodynamic study of methyl N-(4,6-dimethoxypyrimidin-2-yl)carbamate.ACTA CHIMICA SINICA,62(24),2415-2420.
MLA Xing, J,et al."Thermodynamic study of methyl N-(4,6-dimethoxypyrimidin-2-yl)carbamate".ACTA CHIMICA SINICA 62.24(2004):2415-2420.
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