Thermodynamic properties of 2-methyl-2-propanethiol from 0 to 1000/sup 0/K

Journal Article · Mon Apr 20 04:00:00 EST 1953 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja01104a011· OSTI ID:7098499

McCullough, J P; Scott, D W; Finke, H L; Hubbard, W N; Gross, M E; Katz, C; Penningon, R E; Messerly, J F; Waddington, G

Various thermodynamic properties of solid, liquid and gaseous 2-methyl-2-propanethiol were measured from 12 to 450/sup 0/K. The data tht were obtained are: heat capacity of the solid (12 to 274/sup 0/K); heats of transition, 972.0, 154.9 and 232.0 cal.mole/sup -1/ at 151.6, 157.0 and 199.4/sup 0/K, respectively; heat of fusion, 593.2 cal.mole/sup -1/ at the triple point, 274.42/sup 0/K; heat capacity of the liquid, C/sub satd/ = 28.57 + 4.005 x 10/sup -2/ T + 1.500 x 10/sup -5/ T/sup 2/, cal.deg./sup -1/mole/sup -1/ (274 to 330/sup 0/K); entropy of the saturated liquid at 298.16/sup 0/K, 58.90 cal.deg./sup -1/mole/sup -1/; entropy of the ideal gas at 298.16/sup 0/K and unit fugacity, 80.79 cal.deg./sup -1/mole/sup -1/; vapor pressure from 22 to 99/sup 0/, log/sub 10/p (mm) = 6.78781 - 1115.565/(t + 221.314); heat of vaporization, ..delta..H/sub v/ = 9699 - 2.224 T - 0.01891 T/sup 2/, cal.mole/sup -1/ (298 to 337/sup 0/K); heat capacity of the ideal gas, C/sup 0//sub p/ = 2.38 + 0.10229 T - 4.516 x 10/sup -4/ T/sup 2/, cal.deg./sup -1/mole/sup -1/ (325 to 450/sup 0/K); the second virial coefficient, B = (PV - RT)/P = -592 - 16.6 exp(1200/T), cc.mole/sup -1/ (298 to 450/sup 0/K); and the standard heat of formation of the liquid from graphite, hydrogen and rhombic sulfur, ..delta..H/sub t/ = -33.78 kcal.mole/sup -1/ (298.16/sup 0/K). These thermodynamic data were used with available spectroscopic and molecular-structure information to compute the following chemical thermodynamic properties at selected temperatures from 0 to 1000/sup 0/K: (F/sup 0/ - H/sup 0//sub 0/)/T, (H/sup 0/ - H/sup 0//sub 0/)/T, (H/sup 0/ - H/sup 0//sub 0/), S/sup 0/, C/sup 0//sub p/, ..delta..H/sup 0//sub t/, ..delta..F/sup 0//sub t/ and log/sub 10/K/sub t/.

• Research Organization: Bureau of Mines, Bartlesville, OK
• OSTI ID: 7098499
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 75:8; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ENTHALPY
ENTROPY
FLUIDS
FORMATION HEAT
FUSION HEAT
GASES
HIGH TEMPERATURE
LIQUIDS
LOW TEMPERATURE
MEDIUM TEMPERATURE
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHYSICAL PROPERTIES
REACTION HEAT
SOLIDS
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES
THIOLS
TRANSITION HEAT
ULTRALOW TEMPERATURE
VAPOR PRESSURE
VAPORIZATION HEAT
VERY LOW TEMPERATURE