Oleic Acid
- Formula: C18H34O2
- Molecular weight: 282.4614
- IUPAC Standard InChIKey: ZQPPMHVWECSIRJ-KTKRTIGZSA-N
- CAS Registry Number: 112-80-1
- 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. - Stereoisomers:
- Other names: 9-Octadecenoic acid (Z)-; Δ9-cis-Oleic acid; cis-Oleic Acid; cis-9-Octadecenoic Acid; Emersol 211; Emersol 220 White Oleic Acid; Emersol 221 Low Titer White Oleic Acid; Oelsauere; Oleine 7503; Pamolyn 100; Vopcolene 27; Wecoline OO; Z-9-Octadecenoic acid; cis-Octadec-9-enoic acid; cis-Δ9-octadecenoic acid; cis-Δ9-Octadecenoate; neo-Fat 90-04; neo-Fat 92-04; Century cd fatty acid; Elaidoic acid; Emersol 210; Emersol 213; Emersol 6321; Glycon RO; Glycon WO; Groco 2; Groco 4; Groco 5l; Groco 6; Hy-phi 1055; Hy-phi 1088; Hy-phi 2066; Hy-phi 2088; Hy-phi 2102; K 52; L'Acide oleique; Metaupon; Tego-oleic 130; 9-Octadecenoic acid, cis-; Elaic acid; Industrene 105; Industrene 205; Industrene 206; Oleinic acid; Pamolyn; Wochem no. 320; (Z)-9-Octadecanoic acid; Emersol 6313 NF; Priolene 6906; 9-(Z)-octadecenoic acid; (Z)-Octadec-9-enoic acid; 9-Octadecenoic acid (9Z)-; D 100; Emersol 205; Extraolein 90
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Phase change data
Go To: Top, References, Notes
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 | 289.45 | K | N/A | Mod, Magne, et al., 1962 | Uncertainty assigned by TRC = 0.3 K; TRC |
Tfus | 289.45 | K | N/A | Mod, Magne, et al., 1960 | Uncertainty assigned by TRC = 0.5 K; TRC |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
467.7 | 0.001 | Aldrich Chemical Company Inc., 1990 | BS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
83.8 | 456. | A | Stephenson and Malanowski, 1987 | Based on data from 441. to 633. K.; 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 |
---|---|---|---|---|---|
449.7 to 633. | 5.04842 | 2555.604 | -127.258 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
39.6 | 286.5 | Domalski and Hearing, 1996 | AC |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
39.600 | 286.45 | crystaline, α | liquid | Sato, Yoshimoto, et al., 1990 | High-melting, α-form.; DH |
51.900 | 289.35 | crystaline, β | liquid | Sato, Yoshimoto, et al., 1990 | Low-melting, β-form.; DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
138.4 | 286.45 | crystaline, α | liquid | Sato, Yoshimoto, et al., 1990 | High-melting,; DH |
179.3 | 289.35 | crystaline, β | liquid | Sato, Yoshimoto, et al., 1990 | Low-melting,; 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.
Mod, Magne, et al., 1962
Mod, R.R.; Magne, F.C.; Skau, E.L.,
J. Chem. Eng. Data, 1962, 7, 31. [all data]
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]
Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc.,
Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 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]
Sato, Yoshimoto, et al., 1990
Sato, K.; Yoshimoto, N.; Suzuki, M.; Kobayashi, M.; Kaneko, F.,
Structure and transformation in polymorphism of petroselinic acid (cis-w-12-octadecenoic acid),
J. Phys. Chem., 1990, 94, 3180-3185. [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 ΔStrs Entropy of phase transition ΔfusH Enthalpy of fusion ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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