Hexanoic acid, methyl ester
- Formula: C7H14O2
- Molecular weight: 130.1849
- IUPAC Standard InChIKey: NUKZAGXMHTUAFE-UHFFFAOYSA-N
- CAS Registry Number: 106-70-7
- 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: Methyl caproate; Methyl capronate; Methyl hexanoate; Methyl hexoate; Methyl n-hexanoate; n-Caproic acid methyl ester; Methyl hexylate; Methyl ester of hexanoic acid; Caproic acid, methyl ester; Methyl n-hexoate; NSC 5023
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Henry's Law data, 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -494. ± 2. | kJ/mol | Ccb | Adriaanse, Dekker, et al., 1965 | Heat of formation derived by Cox and Pilcher, 1970 |
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 | -540.2 ± 1.0 | kJ/mol | Ccb | Adriaanse, Dekker, et al., 1965 | Heat of formation derived by Cox and Pilcher, 1970 |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -4184.0 ± 0.4 | kJ/mol | Ccb | Freedman, Bagby, et al., 1989 | Corresponding ΔfHºliquid = -571.5 kJ/mol (simple calculation by NIST; no Washburn corrections) |
ΔcH°liquid | -4215.0 ± 0.6 | kJ/mol | Ccb | Adriaanse, Dekker, et al., 1965 | Corresponding ΔfHºliquid = -540.4 kJ/mol (simple calculation by NIST; no Washburn corrections) |
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 | 423. ± 1. | K | AVG | N/A | Average of 8 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 203.6 | K | N/A | Adriaanse, Dekker, et al., 1964 | Uncertainty assigned by TRC = 0.05 K; TRC |
Tfus | 202.2 | K | N/A | Bilterys and Gisseleire, 1935 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 48. ± 1. | kJ/mol | AVG | N/A | Average of 10 values; Individual data points |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
325.2 | 0.020 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
45.2 | 350. | N/A | van Genderen, van Miltenburg, et al., 2002 | AC |
46.4 ± 0.1 | 325. | N/A | van Genderen, van Miltenburg, et al., 2002 | AC |
45.3 | 330. | A | Stephenson and Malanowski, 1987 | Based on data from 315. to 383. K. See also Rose and Schrodt, 1963.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
317.7 to 378.0 | 4.95409 | 1935.423 | -31.421 | Rose and Supina, 1961 | Coefficents calculated by NIST from author's data. |
288. to 343. | 5.0208 | 2014.087 | -23.036 | Althouse and Triebold, 1944 | Coefficents calculated by NIST from author's data. |
Henry's Law 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: Rolf Sander
Henry's Law constant (water solution)
kH(T) = k°H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
k°H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)
k°H (mol/(kg*bar)) | d(ln(kH))/d(1/T) (K) | Method | Reference |
---|---|---|---|
2.7 | M | Buttery, Ling, et al., 1969 |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Henry's Law data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Adriaanse, Dekker, et al., 1965
Adriaanse, N.; Dekker, H.; Coops, J.,
Heats of combustion of normal saturated fatty acids and their methyl esters,
Rec. Trav. Chim. Pays/Bas, 1965, 84, 393-407. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Freedman, Bagby, et al., 1989
Freedman, B.; Bagby, M.O.; Khoury, H.,
Correlation of heats of combustion with empirical formulas for fatty alcohols,
J. Am. Oil Chem. Soc., 1989, 66, 595-596. [all data]
Adriaanse, Dekker, et al., 1964
Adriaanse, N.; Dekker, H.; Coops, J.,
Some Physical Constants of Normal, Saturated Fatty Acids and Their Methyl Esters,
Recl. Trav. Chim. Pays-Bas, 1964, 83, 557. [all data]
Bilterys and Gisseleire, 1935
Bilterys, R.; Gisseleire, J.,
Investigations on the Congelation Temperature of Organic Compounds,
Bull. Soc. Chim. Belg., 1935, 44, 567. [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]
van Genderen, van Miltenburg, et al., 2002
van Genderen, Aad C.G.; van Miltenburg, J. Cees; Blok, Jacobus G.; van Bommel, Mark J.; van Ekeren, Paul J.; van den Berg, Gerrit J.K.; Oonk, Harry A.J.,
Liquid--vapour equilibria of the methyl esters of alkanoic acids: vapour pressures as a function of temperature and standard thermodynamic function changes,
Fluid Phase Equilibria, 2002, 202, 1, 109-120, https://doi.org/10.1016/S0378-3812(02)00097-3
. [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]
Rose and Schrodt, 1963
Rose, Arthur; Schrodt, Verle N.,
Correlation and Prediction of Vapor Pressures of Homologs. Use of Structure Parameters and Gas Chromatography Data.,
J. Chem. Eng. Data, 1963, 8, 1, 9-13, https://doi.org/10.1021/je60016a002
. [all data]
Rose and Supina, 1961
Rose, Arthur; Supina, W.R.,
Vapor Pressure and Vapor-Liquid Equilibrium Data for Methyl Esters of the Common Saturated Normal Fatty Acids.,
J. Chem. Eng. Data, 1961, 6, 2, 173-179, https://doi.org/10.1021/je60010a003
. [all data]
Althouse and Triebold, 1944
Althouse, Paul M.; Triebold, Howard O.,
Physical Constants of Methyl Esters of Commonly Occurring Fatty Acids Vapor Pressure,
Ind. Eng. Chem. Anal. Ed., 1944, 16, 10, 605-606, https://doi.org/10.1021/i560134a003
. [all data]
Buttery, Ling, et al., 1969
Buttery, R.G.; Ling, L.C.; Guadagni, D.G.,
Volatilities Aldehydes, Ketones, and Esters in Dilute Water Solution,
J. Agric. Food Chem., 1969, 17, 385-389. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Henry's Law data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point d(ln(kH))/d(1/T) Temperature dependence parameter for Henry's Law constant k°H Henry's Law constant at 298.15K ΔcH°liquid Enthalpy of combustion of liquid at standard conditions 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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