Propane, 2-methyl-2-(methylthio)-
- Formula: C5H12S
- Molecular weight: 104.214
- IUPAC Standard InChIKey: CJFVCTVYZFTORU-UHFFFAOYSA-N
- CAS Registry Number: 6163-64-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Sulfide, tert-butyl methyl; tert-Butyl methyl sulfide; Methyl tert-butyl sulfide; 3,3-Dimethyl-2-thiabutane; 2-Methyl-2-(methylthio)-propane; tert-Butyl methyl sulphide; (CH3)3CSCH3; Methyl t-butyl sulfide; NSC 97331
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -121.0 ± 0.75 | kJ/mol | Ccb | Scott, Good, et al., 1962 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -156.9 ± 0.75 | kJ/mol | Ccb | Scott, Good, et al., 1962 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -4127.2 ± 0.63 | kJ/mol | Ccb | Scott, Good, et al., 1962 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 276.14 | J/mol*K | N/A | Scott, Good, et al., 1962 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
199.95 | 298.15 | Scott, Good, et al., 1962 | T = 15 to 364 K.; DH |
Phase change data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 373. ± 3. | K | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 190.85 | K | N/A | Lanum and Morris, 1969 | Uncertainty assigned by TRC = 0.2 K; TRC |
Tfus | 190.9 | K | N/A | Anonymous, 1952 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 190.84 | K | N/A | Scott, Good, et al., 1962, 2 | Uncertainty assigned by TRC = 0.02 K; TRC |
Ttriple | 184.86 | K | N/A | Scott, Good, et al., 1962, 2 | Metastable crystal phase; Uncertainty assigned by TRC = 0.06 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 569.8 | K | N/A | Majer and Svoboda, 1985 | |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 35.9 | kJ/mol | N/A | Majer and Svoboda, 1985 | |
ΔvapH° | 34.2 | kJ/mol | N/A | Sawaya, Mokbel, et al., 2004 | Based on data from 245. to 352. K.; AC |
ΔvapH° | 35.9 | kJ/mol | N/A | Reid, 1972 | AC |
ΔvapH° | 35.8 | kJ/mol | V | Scott, Good, et al., 1962 | ALS |
ΔvapH° | 35.9 | kJ/mol | N/A | Scott, Good, et al., 1962 | DRB |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
31.47 | 372.1 | N/A | Majer and Svoboda, 1985 | |
36.5 | 291. | N/A | Dykyj, Svoboda, et al., 1999 | Based on data from 276. to 397. K.; AC |
35.1 | 320. | A,EB | Stephenson and Malanowski, 1987 | Based on data from 305. to 411. K. See also Scott, Good, et al., 1962, 3 and Osborn and Douslin, 1966.; AC |
Enthalpy of vaporization
ΔvapH =
A exp(-βTr) (1 − Tr)β
ΔvapH =
Enthalpy of vaporization (at saturation pressure)
(kJ/mol)
Tr = reduced temperature (T / Tc)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A (kJ/mol) | β | Tc (K) | Reference | Comment |
---|---|---|---|---|---|
330. to 372. | 51.75 | 0.2906 | 569.8 | Majer and Svoboda, 1985 |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
306.86 to 410.24 | 3.97204 | 1259.672 | -54.455 | Scott, Good, et al., 1962 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
8.414 | 190.84 | Scott, Good, et al., 1962 | DH |
8.41 | 190.8 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
44.09 | 190.84 | Scott, Good, et al., 1962 | DH |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Scott, Good, et al., 1962
Scott, D.W.; Good, W.D.; Todd, S.S.; Messerly, J.F.; Berg, W.T.; Hossenlopp, I.A.; Lacina, J.L.; Osborn, A.; McCullough, J.P.,
3,3-Dimethyl-2-thiabutane: Chemical thermodynamic properties and barriers to internal rotation,
J. Chem. Phys., 1962, 36, 406-412. [all data]
Lanum and Morris, 1969
Lanum, W.J.; Morris, J.C.,
Physical Properties of Some Sulfur and Nitrogen Compounds,
J. Chem. Eng. Data, 1969, 14, 93-8. [all data]
Anonymous, 1952
Anonymous, R.,
, Physical Properties of Chemical Substances, Dow Chemical Co., 1952. [all data]
Scott, Good, et al., 1962, 2
Scott, D.W.; Good, W.D.; Todd, S.S.; Messerly, J.F.; Berg, W.T.; Hossenlopp, I.A.; Lacina, J.L.; Osborn, A.G.; McCullough, J.P.,
3,3-Dimethyl-2-Thiabutane: Chemical Thermodynamic Properties and Barriers to Internal Rotation,
J. Chem. Phys., 1962, 36, 406-12. [all data]
Majer and Svoboda, 1985
Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Sawaya, Mokbel, et al., 2004
Sawaya, Terufat; Mokbel, Ilham; Rauzy, Evelyne; Saab, Joseph; Berro, Charles; Jose, Jacques,
Experimental vapor pressures of alkyl and aryl sulfides,
Fluid Phase Equilibria, 2004, 226, 283-288, https://doi.org/10.1016/j.fluid.2004.10.007
. [all data]
Reid, 1972
Reid, Robert C.,
Handbook on vapor pressure and heats of vaporization of hydrocarbons and related compounds, R. C. Wilhort and B. J. Zwolinski, Texas A Research Foundation. College Station, Texas(1971). 329 pages.$10.00,
AIChE J., 1972, 18, 6, 1278-1278, https://doi.org/10.1002/aic.690180637
. [all data]
Dykyj, Svoboda, et al., 1999
Dykyj, J.; Svoboda, J.; Wilhoit, R.C.; Frenkel, M.L.; Hall, K.R.,
Vapor Pressure of Chemicals: Part A. Vapor Pressure and Antoine Constants for Hydrocarbons and Sulfur, Selenium, Tellurium and Hydrogen Containing Organic Compounds, Springer, Berlin, 1999, 373. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Scott, Good, et al., 1962, 3
Scott, D.W.; Good, W.D.; Todd, S.S.; Messerly, J.F.; Berg, W.T.; Hossenlopp, I.A.; Lacina, J.L.; Osborn, Ann; McCullough, J.P.,
3,3-Dimethyl-2-Thiabutane: Chemical Thermodynamic Properties and Barriers to Internal Rotation,
J. Chem. Phys., 1962, 36, 2, 406, https://doi.org/10.1063/1.1732519
. [all data]
Osborn and Douslin, 1966
Osborn, A.G.; Douslin, D.R.,
Vapor Pressure Relations of 36 Sulfur Compounds Present in Petroleum.,
J. Chem. Eng. Data, 1966, 11, 4, 502-509, https://doi.org/10.1021/je60031a014
. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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