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Chemical thermodynamic properties for 1-alkanethiols.
Finke-HL; McCullough-JP; Messerly-JF; Guthrie-GB; Douslin-DR
J Chem Thermodynamics 1970 Jan; 2(1):27-41
The thermodynamic quantities (Gs - H0o)/T, (Hs - H0o)/T, Hs - H0o, Ss, and Cs were evaluated for the solid and liquid states of ethanethiol, 1-pentanethiol, 1-hexanethiol, 1-heptanethiol, and 1-decanethiol in the range 10 to 370 K. The molar entropies So were evaluated for the ideal gas states at 298.15 K of 1-pentanethiol, 1-hexanethiol, 1-heptanethiol, and 1-decanethiol. Values for heat capacity, enthalpy of fusion, triple point temperature, and purity were determined by adiabatic calorimetric measurements. The experimentally determined average entropy increments per methylene group at 298.15 K in liquid and ideal gas states, 7.78 and 9.30 cal K-1 mol-1, respectively, are very likely constant for alkanethiols above 1-pentanethiol, and the increments agree satisfactorily with those for n-alkanes, alkyl-sustituted cyclopentanes, and alkyl-substituted cyclohexanes.
Thiols; Thermodynamic-reactions; Thermodynamics
OP; Journal Article
Issue of Publication
The Journal of Chemical Thermodynamics
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division