Disulfide, bis(2-methylpropyl)
- Formula: C8H18S2
- Molecular weight: 178.359
- IUPAC Standard InChI: InChI=1S/C8H18S2/c1-7(2)5-9-10-6-8(3)4/h7-8H,5-6H2,1-4H3
- IUPAC Standard InChIKey: ONJROLGQWMBXAP-UHFFFAOYSA-N
- CAS Registry Number: 1518-72-5
- 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: Isobutyl disulfide; Diisobutyl disulfide; Bis(2-methylpropyl) disulphide; 2,7-Dimethyl-4,5-dithiaoctane; Di(2-methylpropyl) disulfide; diisobutyl disulphide
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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 | -170.9 ± 2.2 | kJ/mol | Ccb | Mackle and McClean, 1964 | Reanalyzed by Cox and Pilcher, 1970, Original value = -169.9 ± 2.1 kJ/mol |
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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -232.8 ± 1.4 | kJ/mol | Ccb | Mackle and McClean, 1964 | Reanalyzed by Cox and Pilcher, 1970, Original value = -231.8 ± 1.2 kJ/mol |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -6692.4 ± 1.2 | kJ/mol | Ccb | Mackle and McClean, 1964 | Reanalyzed by Cox and Pilcher, 1970, Original value = -6685.1 ± 1.2 kJ/mol |
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:
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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 493. | K | N/A | Birch and Norris, 1925 | Uncertainty assigned by TRC = 15. K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔvapH° | 57.2 ± 0.1 | kJ/mol | C | Kusano, 1985 | AC |
| ΔvapH° | 57.2 | kJ/mol | N/A | Shimizu, Saito, et al., 1981 | AC |
| ΔvapH° | 62. ± 2. | kJ/mol | E | Mackle and McClean, 1964 | ALS |
| ΔvapH° | 61.9 | kJ/mol | N/A | Mackle and McClean, 1964 | DRB |
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.
Mackle and McClean, 1964
Mackle, H.; McClean, R.T.B.,
Studies in the thermochemistry of organic sulphides. Part 5.-Dithia-alkanes,
Trans. Faraday Soc., 1964, 60, 669-672. [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]
Birch and Norris, 1925
Birch, S.F.; Norris, W.S.G.P.,
The Chemistry of Petroleum Part I. The Occurence of Compounds of Sulphur in the Liqht Distillate from the Crude Oil of Maindan-i-Naftun,
J. Chem. Soc., 1925, 127, 898. [all data]
Kusano, 1985
Kusano, Kazuhito,
Micro conduction calorimeters to measure enthalpies of vaporization,
Thermochimica Acta, 1985, 88, 1, 109-120, https://doi.org/10.1016/0040-6031(85)85418-6
. [all data]
Shimizu, Saito, et al., 1981
Shimizu, M.; Saito, Y.; Kusano, K.,
, Preprints 17th Conf. Chem. Thermodyn. Thermal Anal., Japan, 1981, 50. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Tboil Boiling point 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 ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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