Hexanoic acid, ethyl ester
- Formula: C8H16O2
- Molecular weight: 144.2114
- IUPAC Standard InChIKey: SHZIWNPUGXLXDT-UHFFFAOYSA-N
- CAS Registry Number: 123-66-0
- 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: Ethyl caproate; Ethyl hexanoate; Caproic acid ethyl ester; n-Caproic acid ethyl ester; Acetic acid, butyl-, ethyl ester; Ethyl butyl acetate; Ethyl hexoate; Ethyl ester of hexanoic acid; Ethyl n-hexanoate; NSC 8882; 8068-81-3
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -528. ± 2. | kJ/mol | Cm | Wiberg and Waldron, 1991 | Heat of hydrolysis |
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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -579.1 ± 1.1 | kJ/mol | Cm | Wiberg and Waldron, 1991 | Heat of hydrolysis |
Phase change 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:
BS - Robert L. Brown and Stephen E. Stein
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 | 441.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Tboil | 440.06 | K | N/A | Serijan and Wise, 1951 | Uncertainty assigned by TRC = 0.3 K; TRC |
Tboil | 439.8 | K | N/A | Gill and Dexter, 1934 | Uncertainty assigned by TRC = 1. K; TRC |
Tboil | 439.8 | K | N/A | Gartenmeister, 1886 | Uncertainty assigned by TRC = 1.5 K; TRC |
Tboil | 435. | K | N/A | Fehling, 1845 | Uncertainty assigned by TRC = 5. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 205.51 | K | N/A | Serijan and Wise, 1951 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 615.2 | K | N/A | Young, 1994 | Uncertainty assigned by TRC = 0.6 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 50.6 ± 0.4 | kJ/mol | GS | Verevkin and Heintz, 1999 | Based on data from 279. to 309. K.; AC |
ΔvapH° | 52. ± 1. | kJ/mol | V | Wiberg and Waldron, 1991 | Heat of hydrolysis; ALS |
ΔvapH° | 51.1 | kJ/mol | N/A | Wiberg and Waldron, 1991 | DRB |
ΔvapH° | 51.5 ± 1.3 | kJ/mol | EB | Wiberg and Waldron, 1991 | Based on data from 345. to 379. K.; AC |
ΔvapH° | 51.72 ± 0.10 | kJ/mol | C | Nilsson and Wadso, 1986 | ALS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
50.8 ± 0.4 | 294. | GS | Verevkin and Heintz, 1999 | Based on data from 279. to 309. K.; AC |
47.4 ± 0.3 | 359. | EB | Wiberg and Waldron, 1991 | Based on data from 345. to 374. K.; AC |
51.8 | 311. | A | Stephenson and Malanowski, 1987 | Based on data from 396. to 449. K.; AC |
48.6 | 315. | A | Stephenson and Malanowski, 1987 | Based on data from 300. to 376. K.; AC |
Gas phase ion energetics 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: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C4H8O2+ | 9.96 | 1-C4H8 | EI | Holmes and Lossing, 1980 |
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 |
Mass spectrum (electron ionization)
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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
Spectrum
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Additional Data
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Due to licensing restrictions, this spectrum cannot be downloaded.
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 | 4085 |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics 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.
Wiberg and Waldron, 1991
Wiberg, K.B.; Waldron, R.F.,
Lactones. 2. Enthalpies of hydrolysis, reduction, and formation of the C4-C13 monocyclic lactones. strain energies and conformations,
J. Am. Chem. Soc., 1991, 113, 7697-7705. [all data]
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Serijan and Wise, 1951
Serijan, K.T.; Wise, P.H.,
Dicyclic hydrocarboms. IV. Synthesis and Physical properties of alpha,alpha - and alpha,omega-diphenyl- and dicyclohexyl- pentanes and hexanes,
J. Am. Chem. Soc., 1951, 73, 5191. [all data]
Gill and Dexter, 1934
Gill, A.H.; Dexter, F.P.,
Ind. Eng. Chem., 1934, 26, 881. [all data]
Gartenmeister, 1886
Gartenmeister, R.,
Investigation of the physical characterstics of liquid compounds: vi boiling point and specific volume of normal fatty acid esters,
Justus Liebigs Ann. Chem., 1886, 233, 249-315. [all data]
Fehling, 1845
Fehling, H.,
Acids of Coconut Oil,
Justus Liebigs Ann. CHem., 1845, 53, 399-411. [all data]
Young, 1994
Young, C.L.,
Personal Commun. 1994 1994, 1994. [all data]
Verevkin and Heintz, 1999
Verevkin, Sergey P.; Heintz, Andreas,
Determination of Vaporization Enthalpies of the Branched Esters from Correlation Gas Chromatography and Transpiration Methods,
J. Chem. Eng. Data, 1999, 44, 6, 1240-1244, https://doi.org/10.1021/je990122a
. [all data]
Nilsson and Wadso, 1986
Nilsson, S.-O.; Wadso, I.,
Thermodynamic properties of some mono-, di-, and tri esters. Enthalpies of solution in water at 288.15 to 318.15 K and enthalpies of vaporization and heat capacities at 298.15 K,
J. Chem. Thermodyn., 1986, 18, 673-681. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Holmes and Lossing, 1980
Holmes, J.L.; Lossing, F.P.,
Gas-phase heats of formation of keto and enol ions of carbonyl compounds.,
J. Am. Chem. Soc., 1980, 102, 1591. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
AE Appearance energy Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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