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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Condensed phase thermochemistry data
Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, 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 |
|---|---|---|---|---|---|
| ΔcH°solid | -3321.0 ± 0.3 | kcal/mol | Ccb | Freedman, Bagby, et al., 1989 | Corresponding ΔfHºsolid = -251.1 kcal/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
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 (atm) | Reference | Comment |
|---|---|---|---|
| 569.2 | 0.132 | Weast and Grasselli, 1989 | BS |
| 459.7 | 0.003 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 27.17 | 333. | A | Stephenson and Malanowski, 1987 | Based on data from 318. to 460. K.; AC |
Enthalpy of sublimation
| ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 40.99 | 310. | ME | Stephenson and Malanowski, 1987 | Based on data from 307. to 313. K. See also Omar, 1967.; AC |
Enthalpy of fusion
| ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 16.40 | 315. | Omar, 1967 | AC |
Enthalpy of phase transition
| ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 1.860 | 396.65 | crystaline, II, á | crystaline, I, à transition | King and Garner, 1934 | DH |
| 3.7225 | 313.51 | crystaline, I, à | liquid, liq transition | King and Garner, 1934 | DH |
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)
Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Gas Chromatography, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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| 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. |
|---|---|
| Origin | NIST Mass Spectrometry Data Center |
| NIST MS number | 412974 |
Gas Chromatography
Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
| Column type | Active phase | Temperature (C) | I | Reference | Comment |
|---|---|---|---|---|---|
| Capillary | SE-30 | 200. | 2378. | Korhonen, 1985 | N2; Column length: 25. m; Column diameter: 0.33 mm |
| Capillary | SE-30 | 220. | 2383. | Korhonen, 1985 | N2; Column length: 25. m; Column diameter: 0.33 mm |
Kovats' RI, polar column, isothermal
| Column type | Active phase | Temperature (C) | I | Reference | Comment |
|---|---|---|---|---|---|
| Capillary | OV-351 | 140. | 2649. | Korhonen, 1985 | N2; Column length: 25. m; Column diameter: 0.32 mm |
| Capillary | OV-351 | 160. | 2649. | Korhonen, 1985 | N2; Column length: 25. m; Column diameter: 0.32 mm |
| Capillary | OV-351 | 180. | 2662. | Korhonen, 1985 | N2; Column length: 25. m; Column diameter: 0.32 mm |
| Capillary | OV-351 | 200. | 2660. | Korhonen, 1985 | N2; Column length: 25. m; Column diameter: 0.32 mm |
| Capillary | OV-351 | 220. | 2664. | Korhonen, 1985 | N2; Column length: 25. m; Column diameter: 0.32 mm |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | SE-30 | 2379. | Korhonen, 1985 | N2, 6. K/min; Column length: 25. m; Column diameter: 0.33 mm; Tstart: 100. C; Tend: 320. C |
Van Den Dool and Kratz RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-5MS | 2394.2 | Andriamaharavo, 2014 | 30. m/0.25 mm/0.25 μm, He; Program: 60C (1 min) => 5 C/min => 210C => 10 C/min => 280C (15 min) |
| Capillary | HP-5 | 2400. | Isidorov, Krajewska, et al., 2001 | 30. m/0.25 mm/0.25 μm, He; Program: 50C => 6C/min => 100C => 4C/min => 280C |
Van Den Dool and Kratz RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | OV-351 | 2657. | Korhonen, 1985 | N2, 6. K/min; Column length: 25. m; Column diameter: 0.32 mm; Tstart: 100. C; Tend: 230. C |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Ultra-1 | 2373. | Okumura, 1991 | 25. m/0.32 mm/0.25 μm, He, 3. K/min; Tstart: 80. C; Tend: 260. C |
Normal alkane RI, polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | HP-Innowax FSC | 2670. | Erdemoglu, Sener, et al., 2003 | 60. m/0.25 mm/0.25 μm, He; Program: 60C(10min) => 4C/min => 220C(10min) => 1C/min => 240C |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
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]
Korhonen, 1985
Korhonen, I.O.O.,
Gas-liquid chromatographic analyses. XLIII. Retention increments for 2-chloro-, 2,2-dichloro- and 2,2,2-trichloroethyl esters of aliphatic C2-C20 n-alkanoic acids on SE-30 and OV-351 capillary columns,
J. Chromatogr., 1985, 329, 43-56, https://doi.org/10.1016/S0021-9673(01)81894-X
. [all data]
Andriamaharavo, 2014
Andriamaharavo, N.R.,
Retention Data. NIST Mass Spectrometry Data Center., NIST Mass Spectrometry Data Center, 2014. [all data]
Isidorov, Krajewska, et al., 2001
Isidorov, V.A.; Krajewska, U.; Dubis, E.N.; Jdanova, M.A.,
Partition coefficients of alkyl aromatic hydrocarbons and esters in a hexane-acetonitrile system,
J. Chromatogr. A, 2001, 923, 1-2, 127-136, https://doi.org/10.1016/S0021-9673(01)00929-3
. [all data]
Okumura, 1991
Okumura, T.,
retention indices of environmental chemicals on methyl silicone capillary column,
Journal of Environmental Chemistry (Japan), 1991, 1, 2, 333-358, https://doi.org/10.5985/jec.1.333
. [all data]
Erdemoglu, Sener, et al., 2003
Erdemoglu, N.; Sener, B.; Demirci, B.; Baser, K.H.C.,
The glycosidically bound volatile compounds of Taxus baccata,
Chem. Nat. Compd. (Engl. Transl.), 2003, 39, 2, 195-198, https://doi.org/10.1023/A:1024870031960
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔHtrs Enthalpy of phase transition ΔcH°solid Enthalpy of combustion of solid at standard conditions 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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