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 | -126.1 ± 0.4 | kcal/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° | 12.1 ± 0.1 | kcal/mol | GS | Verevkin and Heintz, 1999 | Based on data from 279. to 309. K.; AC |
ΔvapH° | 12.3 ± 0.3 | kcal/mol | V | Wiberg and Waldron, 1991 | Heat of hydrolysis; ALS |
ΔvapH° | 12.2 | kcal/mol | N/A | Wiberg and Waldron, 1991 | DRB |
ΔvapH° | 12.3 ± 0.31 | kcal/mol | EB | Wiberg and Waldron, 1991 | Based on data from 345. to 379. K.; AC |
ΔvapH° | 12.36 ± 0.024 | kcal/mol | C | Nilsson and Wadso, 1986 | ALS |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
12.1 ± 0.1 | 294. | GS | Verevkin and Heintz, 1999 | Based on data from 279. to 309. K.; AC |
11.3 ± 0.07 | 359. | EB | Wiberg and Waldron, 1991 | Based on data from 345. to 374. K.; AC |
12.4 | 311. | A | Stephenson and Malanowski, 1987 | Based on data from 396. to 449. K.; AC |
11.6 | 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 |
References
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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, Phase change data, Gas phase ion energetics data, 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 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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