n-Hexane
- Formula: C6H14
- Molecular weight: 86.1754
- IUPAC Standard InChIKey: VLKZOEOYAKHREP-UHFFFAOYSA-N
- CAS Registry Number: 110-54-3
- 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. - Isotopologues:
- Other names: Hexane; Skellysolve B; n-C6H14; Esani; Heksan; Hexanen; Hexyl hydride; Gettysolve-B; NCI-C60571; NSC 68472
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Gas phase thermochemistry data
Go To: Top, IR Spectrum, Mass spectrum (electron ionization), 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:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -167.1 | kJ/mol | N/A | Good and Smith, 1969 | Value computed using ΔfHliquid° value of -198.7±0.7 kj/mol from Good and Smith, 1969 and ΔvapH° value of 31.6 kj/mol from Prosen and Rossini, 1945.; DRB |
ΔfH°gas | -167.2 ± 0.79 | kJ/mol | Ccb | Prosen and Rossini, 1945 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°gas | 388.82 ± 0.84 | J/mol*K | N/A | Scott D.W., 1974 | This reference does not contain the original experimental data. Experimental entropy value is based on the results [ Messerly J.F., 1967] for S(liquid).; GT |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
110.58 | 200. | Scott D.W., 1974, 2 | Recommended values were obtained from the consistent correlation scheme for alkanes [ Scott D.W., 1974, Scott D.W., 1974, 2]. This approach gives a better agreement with experimental data than the statistical thermodynamics calculation [ Pitzer K.S., 1944, Pitzer K.S., 1946] (see also [ Waddington G., 1949]).; GT |
133.55 | 273.15 | ||
142.6 ± 0.2 | 298.15 | ||
143.26 | 300. | ||
181.54 | 400. | ||
217.28 | 500. | ||
248.11 | 600. | ||
274.05 | 700. | ||
296.23 | 800. | ||
315.06 | 900. | ||
331.37 | 1000. | ||
345.18 | 1100. | ||
357.31 | 1200. | ||
368.19 | 1300. | ||
376.56 | 1400. | ||
389.11 | 1500. |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
156.27 ± 0.31 | 333.85 | Waddington G., 1947 | GT |
168.28 ± 0.34 | 365.15 | ||
181.17 ± 0.36 | 398.85 | ||
194.10 ± 0.39 | 433.70 | ||
206.94 ± 0.41 | 468.90 |
IR Spectrum
Go To: Top, Gas phase thermochemistry data, Mass spectrum (electron ionization), References, Notes
Data compiled by: Coblentz Society, Inc.
- GAS (12 mmHg, N2 ADDED, TOTAL PRESSURE 600 mmHg); BECKMAN IR-9 (GRATING); DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 2 cm-1 resolution
- LIQUID (NEAT); DOW KBr FOREPRISM-GRATING; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm-1 resolution
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Mass spectrum (electron ionization)
Go To: Top, Gas phase thermochemistry data, IR Spectrum, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
NIST MS number | 19379 |
References
Go To: Top, Gas phase thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Good and Smith, 1969
Good, W.D.; Smith, N.K.,
Enthalpies of combustion of toluene, benzene, cyclohexane, cyclohexene, methylcyclopentane, 1-methylcyclopentene, and n-hexane,
J. Chem. Eng. Data, 1969, 14, 102-106. [all data]
Prosen and Rossini, 1945
Prosen, E.J.; Rossini, F.D.,
Heats of combustion and formation of the paraffin hydrocarbons at 25° C,
J. Res. NBS, 1945, 263-267. [all data]
Scott D.W., 1974
Scott D.W.,
Correlation of the chemical thermodynamic properties of alkane hydrocarbons,
J. Chem. Phys., 1974, 60, 3144-3165. [all data]
Messerly J.F., 1967
Messerly J.F.,
Low-temperature thermal data for n-pentane, n-heptadecane, and n-octadecane. Revised thermodynamic functions for the n-alkanes, C5-C18,
J. Chem. Eng. Data, 1967, 12, 338-346. [all data]
Scott D.W., 1974, 2
Scott D.W.,
Chemical Thermodynamic Properties of Hydrocarbons and Related Substances. Properties of the Alkane Hydrocarbons, C1 through C10 in the Ideal Gas State from 0 to 1500 K. U.S. Bureau of Mines, Bulletin 666, 1974. [all data]
Pitzer K.S., 1944
Pitzer K.S.,
Thermodynamics of gaseous paraffins. Specific heat and related properties,
Ind. Eng. Chem., 1944, 36, 829-831. [all data]
Pitzer K.S., 1946
Pitzer K.S.,
The entropies and related properties of branched paraffin hydrocarbons,
Chem. Rev., 1946, 39, 435-447. [all data]
Waddington G., 1949
Waddington G.,
Experimental vapor heat capacities and heats of vaporization of 2-methylpentane, 3-methylpentane, and 2,3-dimethylbutane,
J. Am. Chem. Soc., 1949, 71, 3902-3906. [all data]
Waddington G., 1947
Waddington G.,
Experimental vapor heat capacities and heats of vaporization of n-hexane and 2,2-dimethylbutane,
J. Am. Chem. Soc., 1947, 69, 2275-2279. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas S°gas Entropy of gas at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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