Disulfide, dimethyl

• Formula: C₂H₆S₂
• Molecular weight: 94.199
• IUPAC Standard InChI: InChI=1S/C2H6S2/c1-3-4-2/h1-2H3 Copy

  
• IUPAC Standard InChIKey: WQOXQRCZOLPYPM-UHFFFAOYSA-N Copy
• CAS Registry Number: 624-92-0
• 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: 2,3-Dithiabutane; Methyl disulfide; (Methyldithio)methane; Dimethyl disulfide; Dimethyl disulphide; (CH3S)2; UN 2381; DMDS; Sulfa-Hitech; NSC 9370; (Methyldisulfanyl)methane
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• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • Henry's Law data
  • Gas phase ion energetics data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
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Condensed 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of liquid

Phase change 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:
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

Enthalpy of vaporization

Enthalpy of vaporization

Δ_vapH = A exp(-βT_r) (1 − T_r)^β
    Δ_vapH = Enthalpy of vaporization (at saturation pressure) (kJ/mol)
    T_r = reduced temperature (T / T_c)

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Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Enthalpy of fusion

Entropy of fusion

References

Go To: Top, 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.

Voronkov, Klyuchnikov, et al., 1989
Voronkov, M.G.; Klyuchnikov, V.A.; Kolabin, S.N.; Shvets, G.N.; Varusin, P.I.; Deryagina, E.N.; Korchevin, N.A.; Tsvetnitskaya, S.I., Thermochemical properties of diorganyl chalcogenides and dichalcogenides RM_nR(M = S, Se, Te; n = 1, 2)., Dokl. Phys. Chem. (Engl. Transl.), 1989, 307, 650-653, In original 1139. [all data]

Hubbard, Douslin, et al., 1958
Hubbard, W.N.; Douslin, D.R.; McCullough, J.P.; Scott, D.W.; Todd, S.S.; Messerly, J.F.; Hossenlopp, I.A.; George, A.; Waddington, G., 2,3-dithiabutane, 3,4-dithiahexane and 4,5-dithiaoctane: Chemical thermodynamic properties from 0 to 1000°K, J. Am. Chem. Soc., 1958, 80, 3547-3554. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Scott, Finke, et al., 1950
Scott, D.W.; Finke, H.L.; Gross, M.E.; Guthrie, G.B.; Huffman, H.M., 2,3-Dithiabutane: low temperature heat capacity, heat of fusion, heat of vaporization, vapor pressure, entropy and thermodynamic functions, J. Am. Chem. Soc., 1950, 72, 2424-2430. [all data]

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [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]

Pryor and Platt, 1963
Pryor, W.A.; Platt, P.K., Reaction of radicals V. Reaction of Phenyl Radicals with Aliphatic Disulfides, J. Am. Chem. Soc., 1963, 85, 1496. [all data]

Mcallan, Cullum, et al., 1951
Mcallan, D.T.; Cullum, T.V.; Dean, R.A.; Fidler, F.A., The Preparation and Properties of Sulfur Compounds Related to Petroleum I. The Dialkyl Sulfides and Disulfides, J. Am. Chem. Soc., 1951, 73, 3627-32. [all data]

Trotter and Thompson, 1946
Trotter, I.F.; Thompson, H.W., Infrared SPectra of Thiols, Sulfides, and Disulfides, J. Chem. Soc., 1946, 1946, 481. [all data]

Scott, Finke, et al., 1950, 2
Scott, D.W.; Finke, H.L.; Gross, M.E.; Guthrie, G.B.; Huffman, H.M., 2,3-Dithiabutane: Low Temperature Heat Capacity, Heat of Fusion, Heat of Vaporization, Vapor Pressure, Entropy and Thermodynamic Functions, J. Am. Chem. Soc., 1950, 72, 2424-30. [all data]

Anselme and Teja, 1990
Anselme, M.J.; Teja, A.S., The critical properties of rapidly reacting substances, AIChE Symp. Ser., 1990, 86, 279, 128-32. [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]

White, Barnard--Smith, et al., 1952
White, P.T.; Barnard--Smith, D.G.; Fidler, F.A., Vapor Pressure--Temperature Relationships of Sulfur Compounds Related to Petroleum, Ind. Eng. Chem., 1952, 44, 6, 1430-1438, https://doi.org/10.1021/ie50510a064 . [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

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• 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°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

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