An examination of the thermodynamics of fusion, vaporization, and sublimation of several parabens by correlation gas chromatography.

@article{Umnahanant2011AnEO,
  title={An examination of the thermodynamics of fusion, vaporization, and sublimation of several parabens by correlation gas chromatography.},
  author={Patamaporn Umnahanant and James S. Chickos},
  journal={Journal of pharmaceutical sciences},
  year={2011},
  volume={100 5},
  pages={
          1847-55
        }
}
The vaporization, fusion, and sublimation enthalpies of methyl, ethyl, propyl, and butyl paraben are reported and compared with literature values. The vaporization enthalpies were measured by correlation gas chromatography and the fusion enthalpies by differential scanning calorimetry. Adjusted to T = 298.15 K, these enthalpies were combined to yield the sublimation enthalpy. The results compare favorably to some of the literature values but do not support the reversal in magnitude of both the… 
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References

SHOWING 1-10 OF 32 REFERENCES
Vaporization, fusion and sublimation enthalpies of the dicarboxylic acids from C4 to C14 and C16
Thermodynamics of solubility, sublimation and solvation processes of parabens.
CALCULATION OF VAPOR PRESSURE CURVES FOR ETHYL, PROPYL, AND BUTYL PARABENS USING THERMOGRAVIMETRY
The heat treatment of parahydroxy benzoic acid esters follows zero order rate processes that are in good correlation with their evaporation process. Rising temperature experiments were performed and…
The thermochemistry of 2,4-pentanedione revisited: observance of a nonzero enthalpy of mixing between tautomers and its effects on enthalpies of formation.
TLDR
Calculation of new enthalpies of formation for (Z)-4-hydroxy-3-penten-2-one and 2,4-pentanedione in both the gas and liquid phases results in enthalpy differences between the two tautomers both in the liquid and gas phases that are identical within experimental error, and in excellent agreement with recent gas-phase NMR studies.
Vaporization Enthalpies of the α,ω-Alkanediols by Correlation Gas Chromatography
The vaporization enthalpies of 1,2-ethanediol through 1,10-decanediol, 1,12-dodecanediol, 1,14-tetradecanediol, 1,16-hexadecanediol, 1,4-butynediol, 2,5-dimethyl-3-hexyne-2,5-diol, and…
Hypothetical Thermodynamic Properties: Vapor Pressures and Vaporization Enthalpies of the Even n-Alkanes from C78 to C92 at T = 298.15 K by Correlation−Gas Chromatography
The temperature dependence of gas chromatographic retention times of hexaheptacontane to dononacontane is reported. These data are used with a summary of earlier work to evaluate and compare the…
Physical properties of parabens and their mixtures: solubility in water, thermal behavior, and crystal structures.
The peculiar solubility behavior of propylparaben (propyl ester of 4-hydroxybenzoic acid) in aqueous solution, when tested separately and together with methyl-, ethyl-, and butyl-parabens, has been…
The vaporization enthalpies and vapor pressures of fatty acid methyl esters C18, C21 to C23, and C25 to C29 by correlation – gas chromatography
The vaporization enthalpies and vapor pressures of a series of fatty 4 acids methyl esters for C 18 , C 21 to C 23 , C 25 to C 29 by 5 correlation gas chromatography
9 Vapor pressures and vaporization enthalpies for methyl heptadecanoate and methyl heneicosanoate to methyl octacosanoate exclusive of methyl tricosanoate are evaluated as a function of temperature…
An Examination of Factors Influencing the Thermodynamics of Correlation-Gas Chromatography as Applied to Large Molecules and Chiral Separations
The effects of temperature and flow rate on enthalpies of transfer and the resulting vaporization enthalpies measured by correlation-gas chromatography are examined at the mean temperatures of…
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2
3
4
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