Hexacosane
- Formula: C26H54
- Molecular weight: 366.7070
- IUPAC Standard InChI: InChI=1S/C26H54/c1-3-5-7-9-11-13-15-17-19-21-23-25-26-24-22-20-18-16-14-12-10-8-6-4-2/h3-26H2,1-2H3
- IUPAC Standard InChIKey: HMSWAIKSFDFLKN-UHFFFAOYSA-N
- CAS Registry Number: 630-01-3
- 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: n-Hexacosane
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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 by: Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°solid,1 bar | 159.4 | cal/mol*K | N/A | Andon and Martin, 1976 | crystaline, II phase |
Constant pressure heat capacity of liquid
| Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 208. | 353. | Atkinson, Larkin, et al., 1969 | T = 353 to 453 K. Equation only. |
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 158.0 | 298.15 | Andon and Martin, 1976 | crystaline, II phase; T = 10 to 360 K. |
| 162.0 | 304. | Garner, Van Bibber, et al., 1931 | crystaline, II phase; T = 295 to 358 K. Mean value 22-40°C, β-form. |
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.
Andon and Martin, 1976
Andon, R.J.L.; Martin, J.F.,
Thermodynamic properties of hexacosane,
J. Chem. Thermodynam., 1976, 8, 1159-1166. [all data]
Atkinson, Larkin, et al., 1969
Atkinson, C.M.L.; Larkin, J.A.; Richardson, M.J.,
Enthalpy changes in molten n-alkanes and polyethylene,
J. Chem. Thermodynam., 1969, 1, 435-445. [all data]
Garner, Van Bibber, et al., 1931
Garner, W.E.; Van Bibber, K.; King, A.M.,
The melting points and heats of crystallization of the normal long-chain hydrocarbons,
J. Chem. Soc. (London), 1931, 1931, 1533-1541. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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