Ethanethiol

• Formula: C₂H₆S
• Molecular weight: 62.134
• IUPAC Standard InChI: InChI=1S/C2H6S/c1-2-3/h3H,2H2,1H3 Copy

  
• IUPAC Standard InChIKey: DNJIEGIFACGWOD-UHFFFAOYSA-N Copy
• CAS Registry Number: 75-08-1
• 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: Ethyl hydrosulfide; Ethyl mercaptan; Ethyl sulfhydrate; Ethyl thioalcohol; Mercaptoethane; Thioethanol; Thioethyl alcohol; 1-Mercaptoethane; C2H5SH; Aethanethiol; Aethylmercaptan; Etantiolo; Ethaanthiol; Ethylmercaptaan; Ethylmerkaptan; Etilmercaptano; LPG ethyl mercaptan 1010; UN 2363; 1-Ethylthiol; NSC 93877
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Phase change data
  • Henry's Law data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
• Data at other public NIST sites:
  • Computational Chemistry Comparison and Benchmark Database
  • Gas Phase Kinetics Database
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• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

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Gas phase thermochemistry data

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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

Reaction thermochemistry data

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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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

C₂H₅S^- +  =

By formula: C₂H₅S^- + H⁺ = C₂H₆S

CH₆N⁺ +  = (CH₆N⁺ • )

By formula: CH₆N⁺ + C₂H₆S = (CH₆N⁺ • C₂H₆S)

 +  =  + 

By formula: C₄H₈OS + H₂O = C₂H₄O₂ + C₂H₆S

Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C₂H₆S⁺ (ion structure unspecified)

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₂H₅S^- +  =

By formula: C₂H₅S^- + H⁺ = C₂H₆S

Ion clustering data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

CH₆N⁺ +  = (CH₆N⁺ • )

By formula: CH₆N⁺ + C₂H₆S = (CH₆N⁺ • C₂H₆S)

Gas Chromatography

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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

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Kovats' RI, non-polar column, custom temperature program

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Kovats' RI, polar column, custom temperature program

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Normal alkane RI, non-polar column, isothermal

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Normal alkane RI, non-polar column, temperature ramp

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Normal alkane RI, non-polar column, custom temperature program

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Normal alkane RI, polar column, temperature ramp

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References

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Gas Chromatography, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

McCullough, Hubbard, et al., 1957
McCullough, J.P.; Hubbard, W.N.; Frow, F.R.; Hossenlopp, I.A.; Waddington, G., Ethanethiol and 2-thiapropane: Heats of formation and isomerization; the chemical thermodynamic properties from 0 to 1000°K, J. Am. Chem. Soc., 1957, 79, 561-566. [all data]

Janousek, Reed, et al., 1980
Janousek, B.K.; Reed, K.J.; Brauman, J.I., Electron photodetachment from mercaptyl anions (RS- electron affinities of mercaptyl radicals and the S-H bond strength in mercaptans), J. Am. Chem. Soc., 1980, 102, 3125. [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Meot-Ner (Mautner) and Sieck, 1985
Meot-Ner (Mautner), M.; Sieck, L.W., The Ionic Hydrogen Bond and Ion Solvation. 4. SH+ O and NH+ S Bonds. Correlations with Proton Affinity. Mutual Effects of Weak and Strong Ligands in Mixed Clusters, J. Phys. Chem., 1985, 89, 24, 5222, https://doi.org/10.1021/j100270a021 . [all data]

Wadso, 1957
Wadso, I., The heats of hydrolysis of some alkyl thiolesters, Acta Chem. Scand., 1957, 11, 1745-1751. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Traeger, 1984
Traeger, J.C., Heat of formation for the SH radical by photoionization mass spectrometry, Org. Mass Spectrom., 1984, 19, 514. [all data]

Ohno, Imai, et al., 1983
Ohno, K.; Imai, K.; Matsumoto, S.; Harada, Y., Penning ionization electron spectroscopy of C₂H₅X (X = NH₂, OH, H, Cl, I) relative reactivity of orbital localizing on functional groups upon electrophilic attack by metastable helium atoms, J. Phys. Chem., 1983, 87, 4346. [all data]

Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S., Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [all data]

Weiner and Lattman, 1978
Weiner, M.A.; Lattman, M., Ultraviolet photoelectron spectra of some Cr(CO)₅L complexes containing organosulfide and organophosphine ligands, Inorg. Chem., 1978, 17, 1084. [all data]

Ogata, Onizuka, et al., 1973
Ogata, H.; Onizuka, H.; Nihei, Y.; Kamada, H., The photoelectron spectra of alcohols, mercaptans and amines, Bull. Chem. Soc. Jpn., 1973, 46, 3036. [all data]

Keyes and Harrson, 1968
Keyes, B.G.; Harrson, A.G., The fragmentation of aliphatic sulfur compounds by electron impact, J. Am. Chem. Soc., 1968, 90, 5671. [all data]

Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J., Ionization potentials of some molecules, J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]

Gal'perin, Bogolyubov, et al., 1969
Gal'perin, Ya.V.; Bogolyubov, G.M.; Grishin, N.N.; Petrov, A.A., Organic derivatives of elements of groups V and VI. VI. Mass spectra of compounds with S-S bonds, Zh. Obshch. Khim., 1969, 39, 1599, In original 1567. [all data]

Amos, Gillis, et al., 1969
Amos, D.; Gillis, R.G.; Occolowitz, J.L.; Pisani, J.F., The ions [CH₃S]⁺, [C₂H₅S]⁺ and [CH₃O]⁺ formed by electron-impact, Org. Mass Spectrom., 1969, 2, 209. [all data]

Haney and Franklin, 1969
Haney, M.A.; Franklin, J.L., Heats of formation of H₃O⁺, H₃S⁺, and NH₄⁺ by electron impact, J. Chem. Phys., 1969, 50, 2028. [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]

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 Arsen'ev, 1970
Golovnya, R.V.; Arsen'ev, Y.N., Gas-chromatographic method for the analysis of n-mercaptans and symmetrical n-sulfides and n-disulfides, Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.), 1970, 6, 4, 1316-1318, https://doi.org/10.1007/BF00852683 . [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]

Kavan, 1973
Kavan, I., Analysis of odorants, Sbornik Praci UVP, 1973, 26, 128-144. [all data]

Zenkevich, 2005
Zenkevich, I.G., Experimentally measured retention indices., 2005. [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]

Tamura, Nakamoto, et al., 1995
Tamura, H.; Nakamoto, H.; Yang, R.-H.; Sugisawa, H., Characteristic aroma compounds in green algae (Ulva pertusa) volatiles, Nippon Shokuhin Kagaku Kogaku Kaishi, 1995, 42, 11, 887-891, https://doi.org/10.3136/nskkk.42.887 . [all data]

Sugisawa, Nakamura, et al., 1990
Sugisawa, H.; Nakamura, K.; Tamura, H., The aroma profile of the volatile in marine green algae (Ulva pertusa), Food Reviews International, 1990, 6, 4, 573-589, https://doi.org/10.1080/87559129009540893 . [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 Chupalov, 1996
Zenkevich, I.G.; Chupalov, A.A., New Possibilities of Chromato Mass Pectrometric Identification of Organic Compounds Using Increments of Gas Chromatographic Retention Indices of Molecular Structural Fragments, Zh. Org. Khim. (Rus.), 1996, 32, 5, 656-666. [all data]

Nedjma and Maujean, 1995
Nedjma, M.; Maujean, A., Improved chromatographic analysis of volatile sulfur compounds by the static headspace technique on water-alcohol solutions and brandies with chemiluminescence detection, J. Chromatogr. A, 1995, 704, 2, 495-502, https://doi.org/10.1016/0021-9673(95)00218-C . [all data]

Umano, Hagi, et al., 1995
Umano, K.; Hagi, Y.; Nakahara, K.; Shyoji, A.; Shibamoto, T., Volatile chemicals formed in the headspace of a heated D-glucose/L-cysteine Maillard model system, J. Agric. Food Chem., 1995, 43, 8, 2212-2218, https://doi.org/10.1021/jf00056a046 . [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Gas Chromatography, References

• Symbols used in this document:
  

  AE	Appearance energy
  IE (evaluated)	Recommended ionization energy
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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