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Heat capacity and thermodynamic properties of pyrimethanil myristic salt (C26H41N3O2)
- Source :
-
Journal of Chemical Thermodynamics . Jun2004, Vol. 36 Issue 6, p477. 6p. - Publication Year :
- 2004
-
Abstract
- Pyrimethanil myristic salt was synthesized and its heat capacities were measured with an automated adiabatic calorimeter over the temperature range from <f>T=(79 to 360)</f> K.The melting point, molar enthalpy, <f>ΔfusHm</f> and entropy, <f>ΔfusSm</f>, of fusion of this compound were determined to be (321.84 ± 0.05) K, (56.53 ± 0.03) kJ <f>·</f> mol−1 and (175.64 ± 0.05) J <f>·</f> mol−1 <f>·</f> K−1, respectively. The purity of the compound was calculated to be 98.99 mol% by using the fractional melting technique. The thermodynamic functions relative to the reference temperature, <f>T=298.15</f> K, were calculated based on the heat capacity measurements in the temperature ranges from <f>T=(80 to 360)</f> K. The TG-DTG results demonstrate that the mass loss of the sample takes place in one step with the maximum rate at <f>T=500</f> K, which was caused by evaporation of the sample. [Copyright &y& Elsevier]
- Subjects :
- *ENTHALPY
*ENTROPY
*MELTING points
*EVAPORATION (Chemistry)
Subjects
Details
- Language :
- English
- ISSN :
- 00219614
- Volume :
- 36
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Thermodynamics
- Publication Type :
- Academic Journal
- Accession number :
- 12899821
- Full Text :
- https://doi.org/10.1016/j.jct.2004.03.006