9-Octadecenoic acid, (E)-
- Formula: C18H34O2
- Molecular weight: 282.4614
- IUPAC Standard InChI: InChI=1S/C18H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h9-10H,2-8,11-17H2,1H3,(H,19,20)/b10-9+
- IUPAC Standard InChIKey: ZQPPMHVWECSIRJ-MDZDMXLPSA-N
- CAS Registry Number: 112-79-8
- Chemical structure:
This structure is also available as a 2d Mol file - Species with the same structure:
- Stereoisomers:
- Other names: trans-δ9-Octadecenoic acid; trans-Octadec-9-enoic acid; trans-Oleic acid; trans-9-Octadecenoic acid; Elaidic acid; (E)-9-Octadecenoic acid; (E)-Palmitoleic acid; trans-Elaidic acid; (E)-Palmitelaidic acid; trans-.delta.(sup 9)-Octadecenoic acid
- Information on this page:
- Other data available:
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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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 316.95 | K | N/A | Mod, Magne, et al., 1960 | Uncertainty assigned by TRC = 0.5 K; TRC |
| Tfus | 317.15 | K | N/A | Shreve, Heether, et al., 1950 | Uncertainty assigned by TRC = 1. K; TRC |
| Tfus | 320. | K | N/A | Tammann, 1913 | Uncertainty assigned by TRC = 1. K; TRC |
Reduced pressure boiling point
| Tboil (K) | Pressure (bar) | Reference | Comment |
|---|---|---|---|
| 561.2 | 0.133 | Weast and Grasselli, 1989 | BS |
| 507.2 | 0.020 | Weast and Grasselli, 1989 | BS |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 82.3 | 459. | A | Stephenson and Malanowski, 1987 | Based on data from 444. to 635. K. See also Stull, 1947.; 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 |
|---|---|---|---|---|---|
| 444.5 to 635. | 6.96673 | 4531.994 | 15.886 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 61.55 | 317.6 | Domalski and Hearing, 1996 | AC |
| 27.03 | 371.2 | Alvik, Borgen, et al., 1972 | AC |
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.
Mod, Magne, et al., 1960
Mod, R.R.; Magne, F.C.; Skau, E.L.,
Pure Acid-Free Amides of C18 Fatty Acids. Their Preparation and Binary Freezing Point Behavior,
J. Chem. Eng. Data, 1960, 5, 478. [all data]
Shreve, Heether, et al., 1950
Shreve, O.D.; Heether, M.R.; Knight, H.B.; Swern,
Anal. Chem., 1950, 22, 1498. [all data]
Tammann, 1913
Tammann, G.,
Nachr. Ges. Wiss. Goettingen, Math.-Phys. Kl., 1913, 1913, 335. [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]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Alvik, Borgen, et al., 1972
Alvik, Thor; Borgen, Gerd; Dale, Johannes; Øye, H.A.; Svensson, Sigfrid,
Conformational Studies of Normal, Medium, and Large Ring Diametric Cycloalkanediones and Their Ethylene Ketal Derivatives.,
Acta Chem. Scand., 1972, 26, 1805-1816, https://doi.org/10.3891/acta.chem.scand.26-1805
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔfusH Enthalpy of fusion ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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