Excess properties for 1-butanethiol + heptane, + cyclohexane, + benzene, and + toluene. 2. Excess molar enthalpies at 283.15, 298.15, and 333.15 K
- Phillips Petroleum Company, Bartlesville, OK (United States)
Thiols (mercaptans) are industrially important because of their occurrence in petroleum, their use as chemical intermediates, and their involvement in environmental problems. Excess molar enthalpies of binary mixtures of 1-butanethiol + heptane, + cyclohexane, + benzene, or + toluene have been determined at 283.15, 298.15, 333.15 K with a flow mixing calorimeter, and at 283.15 and 298.15 K with a titration calorimeter. Partial molar enthalpies have been derived from the titration calorimetric results. Where results were obtained by both methods, they were combined to obtain the best estimate of excess enthalpy for all compositions. Equimolar excess enthalpies for 1-butanethiol + heptane or + cyclohexane are endothermic and are comparable to the equimolar excess enthalpies for 1-butanol + heptane or + cyclohexane. Excess enthalpies of 1-butanethiol + alkane systems, which is contrary to the trend observed in 1-butanol + aromatic systems compared to 1-butanol + alkane systems. The excess enthalpy of 1-butanethiol + toluene is weakly exothermic.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 116471
- Journal Information:
- Journal of Chemical and Engineering Data, Journal Name: Journal of Chemical and Engineering Data Journal Issue: 5 Vol. 40; ISSN JCEAAX; ISSN 0021-9568
- Country of Publication:
- United States
- Language:
- English
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