Eicosanoic acid, ethyl ester
- Formula: C22H44O2
- Molecular weight: 340.5836
- IUPAC Standard InChI: InChI=1S/C22H44O2/c1-3-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22(23)24-4-2/h3-21H2,1-2H3
- IUPAC Standard InChIKey: YBKSMWBLSBAFBQ-UHFFFAOYSA-N
- CAS Registry Number: 18281-05-5
- 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: Ethyl icosanoate; Ethyl arachidate; Ethyl eicosanoate; Arachidic acid, ethyl ester
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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
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 314.52 | K | N/A | Becker and Strating, 1940 | Uncertainty assigned by TRC = 1. K; TRC |
Reduced pressure boiling point
| Tboil (K) | Pressure (bar) | Reference | Comment |
|---|---|---|---|
| 569.2 | 0.133 | Weast and Grasselli, 1989 | BS |
| 459.7 | 0.003 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 113.7 | 333. | A | Stephenson and Malanowski, 1987 | Based on data from 318. to 460. K.; AC |
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 171.5 | 310. | ME | Stephenson and Malanowski, 1987 | Based on data from 307. to 313. K. See also Omar, 1967.; AC |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 68.62 | 315. | Omar, 1967 | AC |
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 7.781 | 396.65 | crystaline, II, á | crystaline, I, à transition | King and Garner, 1934 | DH |
| 15.575 | 313.51 | crystaline, I, à | liquid, liq transition | King and Garner, 1934 | DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Becker and Strating, 1940
Becker, H.J.; Strating, J.,
Preparation of Several Crystalline Aliphatic Hydrocarbons in the Pure State,
Rec. Trav. Chim., 1940, 59, 933-46. [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]
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]
Omar, 1967
Omar, M.M.,
Vapour pressures, heats of sublimation, and heats of vaporisation for straight-chain ethyl esters,
J. Chem. Soc., C, 1967, 2038, https://doi.org/10.1039/j39670002038
. [all data]
King and Garner, 1934
King, A.M.; Garner, W.E.,
The heats of crystallisation of the ethyl esters of the monobasic aliphatic acids, 1934, J. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔHtrs Enthalpy of phase transition ΔfusH Enthalpy of fusion ΔsubH Enthalpy of sublimation ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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