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Low-Temperature Heat Capacity and Thermodynamic Properties of Crystalline 2-Chloro-5-trichloromethylpyridine
Kong, L. G., Tan, Z. C., Zhang, W., Xu, F., Wang, M. H., Bao, X. H., Zhang, T. and Sun, L. X. Low-Temperature Heat Capacity and Thermodynamic Properties of Crystalline 2-Chloro-5-trichloromethylpyridine Chemical Papers, Vol.58, No. 5, 2004, 295-298
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n585a295.pdf
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585a295.pdf |
application/pdf |
116.42KB |
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| Author(s) |
Kong, L. G.
Tan, Z. C.
Zhang, W.
Xu, F.
Wang, M. H.
Bao, X. H.
Zhang, T.
Sun, L. X.
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| Title |
Low-Temperature Heat Capacity and Thermodynamic Properties of Crystalline 2-Chloro-5-trichloromethylpyridine
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| Journal name |
Chemical Papers
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| Publication date |
2004
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| Year available |
2004
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| Volume number |
58
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| Issue number |
5
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| ISSN |
0366-6352
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| Start page |
295
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| End page |
298
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2004
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| Language |
english
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| Subject |
250000 Chemical Sciences
250300 Organic Chemistry
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| Abstract/Summary |
The low-temperature heat capacities of 2-chloro-5-trichloromethylpyridine were measured with a high-precision automated adiabatic calorimeter in the temperature range from 80 K to 345 K. A solid-liquid phase transition was observed from 318.57 K to 327.44 K with peak temperature 324.67 K; the molar enthalpy and entropy of phase transition, ΔHm and ΔSm, were determined to be 14.50 ± 0.02 kJ mol−1 and 44.66 ± 0.07 kJ K−1 mol−1, respectively. The thermal stability was investigated through thermogravimetric analysis (TG). The TG and DTG results reveal that 2-chloro-5-trichloromethylpyridine starts to lose mass at 332 K due to evaporation and completely changes into vapour at 483 K under the present experimental conditions.
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