2-Propanethiol, 2-methyl-
- Formula: C4H10S
- Molecular weight: 90.187
- IUPAC Standard InChIKey: WMXCDAVJEZZYLT-UHFFFAOYSA-N
- CAS Registry Number: 75-66-1
- 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: tert-Butanethiol; tert-Butylmercaptan; tert-Butylthiol; 1,1-Dimethylethanethiol; 2-Isobutanethiol; 2-Methyl-2-propanethiol; tert-C4H9SH; t-Butyl mercaptan; tert-Butyl hydrosulfide; 2-Methyl-2-propylthiol; tertiary-Butyl mercaptan; 2-methylpropane-2-thiol
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Phase change data
Go To: Top, Gas Chromatography, 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.
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 337. ± 2. | K | AVG | N/A | Average of 8 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 273.97 | K | N/A | Denyer, Fidler, et al., 1949 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 274.42 | K | N/A | McCullough, Scott, et al., 1953 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 530.1 | K | N/A | Majer and Svoboda, 1985 | |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 7.392 | kcal/mol | N/A | Majer and Svoboda, 1985 | |
ΔvapH° | 7.36 | kcal/mol | N/A | Reid, 1972 | AC |
ΔvapH° | 7.39 ± 0.02 | kcal/mol | E | Hubbard, Good, et al., 1958 | see Hubbard, Katz, et al., 1954 and McCullough, Scott, et al., 1953, 2; ALS |
ΔvapH° | 7.60 | kcal/mol | N/A | Hubbard, Good, et al., 1958 | DRB |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
6.800 | 337.4 | N/A | Majer and Svoboda, 1985 | |
7.19 | 284. | N/A | Stockton, Ng, et al., 1998 | Based on data from 275. to 293. K.; AC |
7.39 | 308. | A,EB | Stephenson and Malanowski, 1987 | Based on data from 293. to 373. K. See also McCullough, Scott, et al., 1953, 3 and Osborn and Douslin, 1966.; AC |
Enthalpy of vaporization
ΔvapH =
A exp(-βTr) (1 − Tr)β
ΔvapH =
Enthalpy of vaporization (at saturation pressure)
(kcal/mol)
Tr = reduced temperature (T / Tc)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A (kcal/mol) | β | Tc (K) | Reference | Comment |
---|---|---|---|---|---|
298. to 337. | 11.23 | 0.3044 | 530.1 | Majer and Svoboda, 1985 |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
293.7 to 372.29 | 3.90701 | 1115.572 | -51.835 | McCullough, Scott, et al., 1953, 3 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
0.593 | 274.4 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
6.413 | 151.6 | Domalski and Hearing, 1996 | CAL |
0.987 | 157. | ||
1.16 | 199.4 | ||
2.16 | 274.4 |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.97199 | 151.6 | crystaline, IV | crystaline, III | McCullough, Scott, et al., 1953, 3 | DH |
0.1549 | 157.0 | crystaline, III | crystaline, II | McCullough, Scott, et al., 1953, 3 | DH |
0.2320 | 199.4 | crystaline, II | crystaline, I | McCullough, Scott, et al., 1953, 3 | DH |
0.59319 | 274.42 | crystaline, I | liquid | McCullough, Scott, et al., 1953, 3 | DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
6.413 | 151.6 | crystaline, IV | crystaline, III | McCullough, Scott, et al., 1953, 3 | DH |
0.987 | 157.0 | crystaline, III | crystaline, II | McCullough, Scott, et al., 1953, 3 | DH |
1.16 | 199.4 | crystaline, II | crystaline, I | McCullough, Scott, et al., 1953, 3 | DH |
2.16 | 274.42 | crystaline, I | liquid | McCullough, Scott, et al., 1953, 3 | DH |
Gas Chromatography
Go To: Top, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | DB-5 | 100. | 605.5 | Miller and Bruno, 2003 | 30. m/0.25 mm/0.1 μm |
Capillary | DB-5 | 120. | 617.0 | Miller and Bruno, 2003 | 30. m/0.25 mm/0.1 μm |
Capillary | DB-5 | 60. | 599.2 | Miller and Bruno, 2003 | 30. m/0.25 mm/0.1 μm |
Capillary | DB-5 | 80. | 602.5 | Miller and Bruno, 2003 | 30. m/0.25 mm/0.1 μm |
Packed | Apiezon M | 130. | 602. | Garbuzov, Misharina, et al., 1985 | He or N2, Chromosorb W, AW-DMCS; Column length: 2.1 m |
Packed | Apiezon M | 60. | 586. | Mikhailova, Gren, et al., 1985 | Chromosorb WAW; Column length: 2.1 m |
Packed | Squalane | 60. | 574. | Zygmunt and Staszewski, 1981 | Chromosorb W DMCS; Column length: 2. m |
Packed | Squalane | 80. | 577. | Zygmunt and Staszewski, 1981 | Chromosorb W DMCS; Column length: 2. m |
Packed | Apiezon M | 130. | 603. | Golovnya and Garbuzov, 1974 | N2, Chromosorb W; Column length: 2.1 m |
Kovats' RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Apiezon M | 602. | Zhu, Wang, et al., 2007 | Program: not specified |
Kovats' RI, polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | PEG-20M | 779. | Zhu, Wang, et al., 2007 | Program: not specified |
Normal alkane RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | Polydimethyl siloxane with 5 % Ph groups | 100. | 606. | Safa and Hadjmohannadi, 2005 | 30. m/0.25 mm/0.10 μm, Nitrogen |
Capillary | Polydimethyl siloxane with 5 % Ph groups | 60. | 599. | Safa and Hadjmohannadi, 2005 | 30. m/0.25 mm/0.10 μm, Nitrogen |
Capillary | Polydimethyl siloxane with 5 % Ph groups | 80. | 602. | Safa and Hadjmohannadi, 2005 | 30. m/0.25 mm/0.10 μm, Nitrogen |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | PONA | 584. | Yang, Wang, et al., 2004 | 50. m/0.20 mm/0.50 μm, N2, 2. K/min; Tstart: 35. C; Tend: 170. C |
Capillary | PONA | 594. | Yang, Wang, et al., 2003 | 50. m/0.20 mm/0.50 μm, 2. K/min; Tstart: 30. C; Tend: 150. C |
Packed | Porapack Q | 600. | Guevas A.P. and Tellez, 1977 | Helium, Porapak Q, 8. K/min; Column length: 3.5 m; Tstart: 220. C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | PONA | 595. | Yang, Wang, et al., 2003 | 50. m/0.20 mm/0.50 μm; Program: not specified |
Capillary | Polydimethyl siloxanes | 587. | Zenkevich, 1998 | Program: not specified |
Capillary | Methyl Silicone | 589. | Zenkevich and Kuznetsova, 1990 | Program: not specified |
References
Go To: Top, Phase change data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Denyer, Fidler, et al., 1949
Denyer, R.L.; Fidler, F.A.; Lowry, R.A.,
Azeotrope Formation Between Thiols and Hydrocarbons,
Ind. Eng. Chem., 1949, 41, 2727-37. [all data]
McCullough, Scott, et al., 1953
McCullough, J.P.; Scott, D.W.; Finke, H.L.; Hubbard, W.N.; Gross, M.E.; Katz, C.; Pennington, R.E.; Messerly, J.F.; Waddington, G.,
The thermodynamic properties of 2-methyl-2-propanethiol from 0 to 1000 k,
J. Am. Chem. Soc., 1953, 75, 1818-24. [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]
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]
Hubbard, Good, et al., 1958
Hubbard, W.N.; Good, W.D.; Waddington, G.,
The heats of combustion, formation and isomerization of the seven isomeric C4H10S alkane thiols and sulfides,
J. Phys. Chem., 1958, 62, 614-617. [all data]
Hubbard, Katz, et al., 1954
Hubbard, W.N.; Katz, C.; Waddington, G.,
A rotating combustion bomb for precision calorimetry. Heats of combustion of some sulfur-containing compounds,
J. Phys. Chem., 1954, 58, 142. [all data]
McCullough, Scott, et al., 1953, 2
McCullough, J.P.; Scott, D.W.; Finke, H.L.; Hubbard, W.N.; Gross, M.E.; Katz, C.; Pennington, R.E.; Messerly, J.F.; Waddington, G.,
The thermodynamic properties of 2-methyl-2-propanethiol from 0 to 1000°K,
J. Am. Chem. Soc., 1953, 75, 1818-18. [all data]
Stockton, Ng, et al., 1998
Stockton, L.D.; Ng, T.L.; Maung, N.; Poole, I.B.; Williams, J.O.; Wright, A.C.; Foster, D.F.; Cole-Hamilton, D.J.,
Dynamic vapour pressure measurements of di-tertiarybutyl sulphide using an ultrasonic monitor,
Journal of Crystal Growth, 1998, 183, 1-2, 95-98, https://doi.org/10.1016/S0022-0248(97)00383-7
. [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]
McCullough, Scott, et al., 1953, 3
McCullough, J.P.; Scott, D.W.; Finke, H.L.; Hubbard, W.N.; Gross, M.E.; Katz, C.; Pennington, R.E.; Messerly, J.F.; Waddington, G.,
The thermodynamic properties of 2-methyl-2-propanethiol from 0 to 1000K,
J. Am. Chem. Soc., 1953, 75, 1818-1824. [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]
Miller and Bruno, 2003
Miller, K.E.; Bruno, T.J.,
Isothermal Kováts retention indices of sulfur compounds on a poly(5% diphenyl-95% dimethylsiloxane) stationary phase,
J. Chromatogr. A, 2003, 1007, 1-2, 117-125, https://doi.org/10.1016/S0021-9673(03)00958-0
. [all data]
Garbuzov, Misharina, et al., 1985
Garbuzov, V.G.; Misharina, T.A.; Aerov, A.F.; Golovnya, R.V.,
Gas chromatographic retention indices for sulphur(II)-containing organic substances,
J. Anal. Chem. USSR (Engl. Transl.), 1985, 40, 4, 576-586. [all data]
Mikhailova, Gren, et al., 1985
Mikhailova, T.V.; Gren, A.I.; Vysotskaja, L.E.; Misharina, T.A.; Vitt, S.V.; Golovnya, R.V.,
Identification of sulphur-organic compounds obtained by thermal treatment of the meat broths in the presence of alkyl-mercaptopropanol,
Nahrung, 1985, 29, 7, 671-680, https://doi.org/10.1002/food.19850290705
. [all data]
Zygmunt and Staszewski, 1981
Zygmunt, B.; Staszewski, R.,
Retention index and gas chromatographic-mass spectrometric identification of thiols in liquified gas,
Chem. Anal. (Warsaw), 1981, 26, 109-113. [all data]
Golovnya and Garbuzov, 1974
Golovnya, R.V.; Garbuzov, V.G.,
Effect of heteroatom in aliphatic sulfur- and oxygen-containing compounds on the values of the retention indices in gas chromatography,
Izv. Akad. Nauk SSSR Ser. Khim., 1974, 7, 1519-1521. [all data]
Zhu, Wang, et al., 2007
Zhu, X.H.; Wang, W.; Schramm, K.-W.; Niu, W.,
Prediction of the Kova´ ts Retention Indices of Thiols by Use of Quantum Chemical and Physicochemical Descriptors,
Chromatographia, 2007, 65, 11-12, 719-724, https://doi.org/10.1365/s10337-007-0237-3
. [all data]
Safa and Hadjmohannadi, 2005
Safa, F.; Hadjmohannadi, M.R.,
Use of topological indices of organic sulfur compounds in quantitative structure-retention relationship study,
QSAR Comb. Sci., 2005, 24, 9, 1026-1032, https://doi.org/10.1002/qsar.200530008
. [all data]
Yang, Wang, et al., 2004
Yang, Y.; Wang, Z.; Zong, B.; Yang, H.,
Determination of sulfur compounds in fluid catalytic cracking gasoline by gas chromatography with a sulfur chemiluminiscence detector,
Chin. J. Chromatogr., 2004, 22, 3, 216-219. [all data]
Yang, Wang, et al., 2003
Yang, Y.-T.; Wang, Z.; Han. J.-H.; Tian, H.-P.; Yang, H.-Y.,
Determination of sulfur compounds in gasoline fraction of microreactor products by gas chromatography - Atomic emission detector,
Petrochemical Technology (Shiyou Huagong), 2003, 32, 11, 995-998. [all data]
Guevas A.P. and Tellez, 1977
Guevas A.P.; Tellez, J.V.G.,
Determination de mercaptanos de C2 a C4 an muestras gaseosas de hydrocarburos de C4 a C5 por chromatographia en fase vapor,
Revista de Instituto Mexicano di Petroleo, 1977, 9, 1, 85-88. [all data]
Zenkevich, 1998
Zenkevich, I.G.,
The Principle of Structural Analogy in the Calculation of Gas Chromatographic Retention Indices using Physico-Chemical Constants of Organic Compounds,
Zh. Anal. Khim. (Rus.), 1998, 53, 1, 43-49. [all data]
Zenkevich and Kuznetsova, 1990
Zenkevich, I.G.; Kuznetsova, L.M.,
Logic Criteria on Prediction of Gas Chromatographic Retention Indices from Physico-Chemical Properties of Organic Compounds,
Dokl. Akad. Nauk SSSR, 1990, 315, 4, 881-885. [all data]
Notes
Go To: Top, Phase change data, Gas Chromatography, References
- Symbols used in this document:
Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition 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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