Pentane, 3-ethyl-
- Formula: C7H16
- Molecular weight: 100.2019
- IUPAC Standard InChIKey: AORMDLNPRGXHHL-UHFFFAOYSA-N
- CAS Registry Number: 617-78-7
- 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: 3-Ethylpentane
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Gas 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -189.7 ± 1.2 | kJ/mol | Ccb | Prosen and Rossini, 1945 | ALS |
ΔfH°gas | -191.4 | kJ/mol | N/A | Davies and Gilbert, 1941 | Value computed using ΔfHliquid° value of -226.7±1.3 kj/mol from Davies and Gilbert, 1941 and ΔvapH° value of 35.3 kj/mol from Prosen and Rossini, 1945.; DRB |
Quantity | Value | Units | Method | Reference | Comment |
S°gas | 411.50 | J/mol*K | N/A | Huffman H.M., 1961 | GT |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
125.35 | 200. | Scott D.W., 1974 | Recommended values were obtained from the consistent correlation scheme for alkanes [ Scott D.W., 1974, 2, Scott D.W., 1974]. This approach gives a good agreement with experimental data available for alkanes. However, large uncertainties could be expected at high temperatures.; GT |
155.06 | 273.15 | ||
166.0 ± 1.1 | 298.15 | ||
166.82 | 300. | ||
211.54 | 400. | ||
252.63 | 500. | ||
288.28 | 600. | ||
318.40 | 700. | ||
343.92 | 800. | ||
366.10 | 900. | ||
385.35 | 1000. | ||
402.08 | 1100. | ||
416.31 | 1200. | ||
430.95 | 1300. | ||
439.32 | 1400. | ||
451.87 | 1500. |
Reaction 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
By formula: C7H16 = C7H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -0.59 ± 0.96 | kJ/mol | Ccb | Prosen and Rossini, 1941 | liquid phase; Heat of Isomerization |
ΔrH° | -2.2 ± 1.1 | kJ/mol | Ccb | Prosen and Rossini, 1941 | gas phase; Heat of Isomerization |
By formula: H2 + C7H14 = C7H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -120.6 ± 1.3 | kJ/mol | Chyd | Rogers and Dejroongruang, 1989 | liquid phase; solvent: Cyclohexane |
By formula: H2 + C7H14 = C7H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -106.8 ± 0.8 | kJ/mol | Chyd | Rogers and Dejroongruang, 1989 | liquid phase; solvent: Cyclohexane |
By formula: 3H2 + C7H10 = C7H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -349. ± 0.4 | kJ/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase |
By formula: 3H2 + C7H10 = C7H16
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -391. ± 0.8 | kJ/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase |
IR Spectrum
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Gas Phase Spectrum
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Additional Data
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Owner | NIST Standard Reference Data Program Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | Sadtler Research Labs Under US-EPA Contract |
State | gas |
References
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, IR Spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Davies and Gilbert, 1941
Davies, G.F.; Gilbert, E.C.,
Heats of combustion and formation of the nine isomeric heptanes in the liquid state,
J. Am. Chem. Soc., 1941, 63, 2730-2732. [all data]
Huffman H.M., 1961
Huffman H.M.,
Low temperature thermodynamic properties of six isomeric heptanes,
J. Phys. Chem., 1961, 65, 495-503. [all data]
Scott D.W., 1974
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]
Scott D.W., 1974, 2
Scott D.W.,
Correlation of the chemical thermodynamic properties of alkane hydrocarbons,
J. Chem. Phys., 1974, 60, 3144-3165. [all data]
Prosen and Rossini, 1941
Prosen, E.J.R.; Rossini, F.D.,
Heats of isomerization of the nine heptanes,
J. Res. NBS, 1941, 27, 519-528. [all data]
Rogers and Dejroongruang, 1989
Rogers, D.W.; Dejroongruang, K.,
Enthalpies of hydrogenation of the dimethylpentenes, ethylpentenes, methylbutene, and trimethylbutene,
J. Chem. Thermodyn., 1989, 21, 1115-1120. [all data]
Roth, Adamczak, et al., 1991
Roth, W.R.; Adamczak, O.; Breuckmann, R.; Lennartz, H.-W.; Boese, R.,
Die Berechnung von Resonanzenergien; das MM2ERW-Kraftfeld,
Chem. Ber., 1991, 124, 2499-2521. [all data]
Notes
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- 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 ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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