Disulfide, dimethyl
- Formula: C2H6S2
- Molecular weight: 94.199
- IUPAC Standard InChI: InChI=1S/C2H6S2/c1-3-4-2/h1-2H3
- IUPAC Standard InChIKey: WQOXQRCZOLPYPM-UHFFFAOYSA-N
- 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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Condensed phase thermochemistry data
Go To: Top, 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 | -62.6 ± 2.0 | kJ/mol | Ccb | Voronkov, Klyuchnikov, et al., 1989 | ALS |
| ΔfH°liquid | -62.47 ± 0.84 | kJ/mol | Ccb | Hubbard, Douslin, et al., 1958 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -2786.5 ± 0.71 | kJ/mol | Ccb | Hubbard, Douslin, et al., 1958 | Reanalyzed by Cox and Pilcher, 1970, Original value = -2784.2 ± 0.71 kJ/mol; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid | 235.39 | J/mol*K | N/A | Scott, Finke, et al., 1950 | DH |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 146.11 | 298.15 | Scott, Finke, et al., 1950 | T = 13 to 352 K.; DH |
References
Go To: Top, Condensed phase thermochemistry 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 RMnR(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]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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