Ethane
- Formula: C2H6
- Molecular weight: 30.0690
- IUPAC Standard InChIKey: OTMSDBZUPAUEDD-UHFFFAOYSA-N
- CAS Registry Number: 74-84-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
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- Isotopologues:
- Other names: Bimethyl; Dimethyl; Ethyl hydride; Methylmethane; C2H6; UN 1035; UN 1961
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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 by: Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°liquid | 126.7 | J/mol*K | N/A | Witt and Kemp, 1937 | Entropy from 0 to 15 K calculated using a Debye function. |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
68.66 | 100. | Atake and Chihara, 1976 | T = 50 to 100 K. Data given graphically. Cp = 0.69933 (T/K) - 2.385 J/mol*K (50 to 70 K, for solid). |
68.5 | 94. | Roder, 1976 | From data 90.3 to 94 K. Average value over range. |
68.44 | 100.32 | Roder, 1976, 2 | T = 93 to 301 K (saturation line), 91 to 330 K, pressures from 0 to 33 MPa. |
72.22 | 180. | Witt and Kemp, 1937 | T = 15 to 185 K. |
74.48 | 200. | Wiebe, Hubbard, et al., 1930 | T = 67 to 305.2 K. Heat capacity of saturated liquid given to 295 K is 136.1 J/mol*K. |
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.
Witt and Kemp, 1937
Witt, R.K.; Kemp, J.D.,
The heat capacity of ethane from 15°K to the boiling point. The heat of fusion and the heat of vaporization,
J. Am. Chem. Soc., 1937, 59, 273-276. [all data]
Atake and Chihara, 1976
Atake, T.; Chihara, H.,
Calorimetric study of the phase changes in solid ethane,
Chem. Lett., 1976, (7), 683-688. [all data]
Roder, 1976
Roder, H.M.,
The heats of transition of solid ethane,
J. Chem. Phys., 1976, 65, 1371-1373. [all data]
Roder, 1976, 2
Roder, H.M.,
Measurements of the specific heats, Ca, and Cv, of dense gaseous and liquid ethane,
J. Res., 1976, NBS 80A, 739-759. [all data]
Wiebe, Hubbard, et al., 1930
Wiebe, R.; Hubbard, K.H.; Brevoort, M.J.,
The heat capacity of saturated liquid ethane from the boiling point to the critical temperature and heat fusion of the solid,
J. Am. Chem. Soc., 1930, 52, 611-622. [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 - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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