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+ Copy

  
• IUPAC Standard InChIKey: ZQPPMHVWECSIRJ-MDZDMXLPSA-N Copy
• CAS Registry Number: 112-79-8
• Chemical structure:
  This structure is also available as a 2d Mol file
• Species with the same structure:
  • 9-Octadecenoic acid
• Stereoisomers:
  • Oleic Acid
• 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:
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Options:
  • Switch to SI units

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• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

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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

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

Reduced pressure boiling point

Enthalpy of vaporization

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

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Enthalpy of fusion

Reaction 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

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

 +  =

By formula: C₁₈H₃₄O₂ + H₂ = C₁₈H₃₆O₂

IR Spectrum

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Data compiled by: Coblentz Society, Inc.

• SOLUTION (9% CS2 FOR 5000-2380 AND 1390-625, 9% C2Cl4 FOR 2380-1390 CM^-1); PERKIN-ELMER; DIGITIZED BY NIST FROM HARD COPY; 4 cm^-1 resolution

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

• gas

Mass spectrum (electron ionization)

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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

Spectrum

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Additional Data

References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Rogers, Hoyte, et al., 1978
Rogers, D.W.; Hoyte, O.P.A.; Ho, R.K.C., Heats of hydrogenation of large molecules. Part 2. Six unsaturated and polyunsaturated fatty acids, J. Chem. Soc. Faraday Trans. 1, 1978, 74, 46-52. [all data]

Keffler, 1930
Keffler, L.J.P., Calorimetric researches on geometrical isomerism. Part I. Preliminary studies on oleic and elaidic acids and esters from a comparison of their heats of combustion, J. Phys. Chem., 1930, 34, 1319-1325. [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]

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, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), References

• Symbols used in this document:
  

  Tboil	Boiling point
  Tfus	Fusion (melting) point
  ΔcH°solid	Enthalpy of combustion of solid at standard conditions
  ΔfH°liquid	Enthalpy of formation of liquid at standard conditions
  ΔfusH	Enthalpy of fusion
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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