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题名: Low-temperature heat capacity and thermodynamic properties of 2-amino-4,6-dimethoxypyrimidine
作者: Sun, XH;  Song, JR;  Tan, ZC;  Di, YY;  Ma, HX;  Wang, MH;  Sun, LX
关键词: 2-amino-4 ;  6-dimethoxypyrimidine ;  adiabatic calorimetry ;  thermodynamic function ;  different scanning calorimetry ;  purity determination
刊名: ACTA CHIMICA SINICA
发表日期: 2003-12-01
卷: 61, 期:12, 页:1897-1903
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
英文摘要: The low-temperature heat capacities of 2-amino-4, 6-dimethoxypyrimidine ( C6H9N3O2) were precisely measured by an automated adiabatic calorimeter in the temperature range of 78 to 394 K. The sample was observed to melt at (370.97 +/- 0.02) K. On the basis of the heat-capacity measurements, the molar enthalpy and entropy of the phase transition as well as chemical purity of the substance were determined to be (29853. 91 +/- 9. 25) J (.) mol(-1), (80.45 +/- 0.03) J (.) mol(-1) (.) K-1 and 99.84%, respectively. The thermodynamic function of the compound were derived and reported at an interval of 5 K. The, further research of the melting process for this compound has been carried out by means of DSC technique. The result was in agreement with that. obtained from the measurements of heat capacities.
语种: 英语
WOS记录号: WOS:000187533900002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139271
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.NW Univ Xian, Chem Engn Coll, Chem Res Inst, Xian 710069, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China

Recommended Citation:
Sun, XH,Song, JR,Tan, ZC,et al. Low-temperature heat capacity and thermodynamic properties of 2-amino-4,6-dimethoxypyrimidine[J]. ACTA CHIMICA SINICA,2003,61(12):1897-1903.
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