1-Octadecanol

• Formula: C₁₈H₃₈O
• Molecular weight: 270.4937
• IUPAC Standard InChI: InChI=1S/C18H38O/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19/h19H,2-18H2,1H3 Copy

  
• IUPAC Standard InChIKey: GLDOVTGHNKAZLK-UHFFFAOYSA-N Copy
• CAS Registry Number: 112-92-5
• 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: n-Octadecanol; n-Octadecyl alcohol; n-1-Octadecanol; Aldol 62; Alfol 18; Atalco S; Cachalot S-43; Crodacol-S; Lanol S; Lorol 28; Octadecan-1-ol; Octadecyl alcohol; Sipol S; Siponol S; Siponol SC; Stearol; Stearyl alcohol; Stenol; Steraffine; Decyl octyl alcohol; Adol 68; Dytol e-46; Octadecanol; Polaax; Usp XIII stearyl alcohol; CO-1895; CO-1897; Kalcohl 80; Conol 30F; 1-Hydroxyoctadecane; C18 Linear alcohol; Cachalot S-56; CO 1895F; Conol 1675; Crodacol S70; Crodacol S95NF; Lanette 18 DEO; Lorol C18; Octadecanol NF; Philcohol 1800; Rita SA; Stearyl alcohol NF; Stearyl alcohol USP; Varonic BG; Octanodecanol; 1-Stearyl alcohol; Stearic alcohol; Rofamol; Kalcohl 8098; Adol 62; SSD AF (Salt/Mix); Ceteareth-20 (Salt/Mix)
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• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • Henry's Law data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Gas Chromatography
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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 as indicated in comments:
DH - Eugene S. Domalski and Elizabeth D. Hearing
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Constant pressure heat capacity of liquid

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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Reduced pressure boiling point

Enthalpy of vaporization

Antoine Equation Parameters

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

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Enthalpy of sublimation

Enthalpy of fusion

Henry's Law 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: Rolf Sander

Henry's Law constant (water solution)

k_H(T) = k°_H exp(d(ln(k_H))/d(1/T) ((1/T) - 1/(298.15 K)))
k°_H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(k_H))/d(1/T) = Temperature dependence constant (K)

IR Spectrum

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Data compiled by: Coblentz Society, Inc.

• Not specified, most likely a prism, grating, or hybrid spectrometer.; (NO SPECTRUM, ONLY SCANNED IMAGE IS AVAILABLE)
• SOLID (OIL MULL); BAIRD (PRISM); DIGITIZED BY NIST FROM HARD COPY; 2 cm^-1 resolution

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

• gas; HP-GC/MS/IRD

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, Henry's Law 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.

Freeman and Bagby, 1989
Freeman, B.; Bagby, M.O., Heats of combustion of fatty esters and triglycerides, J. Am. Oil Chem. Soc., 1989, 66, 1601-1605. [all data]

Khasanshin and Zykova, 1989
Khasanshin, T.S.; Zykova, T.B., Specific heat of saturated monatomic alcohols, Inzh. -Fiz. Zhur., 1989, 56(6), 991-994. [all data]

Spizzichino, 1956
Spizzichino, C., Contribution a l'etude des tensions de vapeur et des chaleurs de vaporisation des acides gras, esters methyliques et alcools gras a des pressions inferieures a 1 mm de mercure, J. des Recherches du C.N.R.S., 1956, 34, 1-24. [all data]

Nichols, Kweskin, et al., 2006
Nichols, Gary; Kweskin, Sasha; Frericks, Margaret; Reiter, Sarah; Wang, Gin; Orf, Jennifer; Carvallo, Brett; Hillesheim, Dorothea; Chickos, James, Evaluation of the Vaporization, Fusion, and Sublimation Enthalpies of the 1-Alkanols: The Vaporization Enthalpy of 1-, 6-, 7-, and 9-Heptadecanol, 1-Octadecanol, 1-Eicosanol, 1-Docosanol, 1-Hexacosanol, and Cholesterol at T = 298.15 K by Correlation Gas Chromatography, J. Chem. Eng. Data, 2006, 51, 2, 475-482, https://doi.org/10.1021/je0503857 . [all data]

Davies and Kybett, 1965
Davies, M.; Kybett, B., Sublimation and vaporization heats of long-chain alcohols, Trans. Faraday Soc., 1965, 61, 1608. [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]

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]

Ambrose, Ellender, et al., 1974
Ambrose, D.; Ellender, J.H.; Sprake, C.H.S., Thermodynamic properties of organic oxygen compounds XXXV. Vapour pressures of aliphatic alcohols, The Journal of Chemical Thermodynamics, 1974, 6, 9, 909-914, https://doi.org/10.1016/0021-9614(74)90235-3 . [all data]

Ambrose and Sprake, 1970
Ambrose, D.; Sprake, C.H.S., Thermodynamic properties of organic oxygen compounds XXV. Vapour pressures and normal boiling temperatures of aliphatic alcohols, The Journal of Chemical Thermodynamics, 1970, 2, 5, 631-645, https://doi.org/10.1016/0021-9614(70)90038-8 . [all data]

Ventol«65533», Calvet, et al., 2004
Ventol«65533», L.; Calvet, T.; Cuevas-Diarte, M.A.; Ram«65533»rez, M.; Oonk, H.A.J.; Mondieig, D.; Negrier, Ph., Melting behaviour in the n-alkanol family. Enthalpy?entropy compensation, Phys. Chem. Chem. Phys., 2004, 6, 8, 1786, https://doi.org/10.1039/b313106h . [all data]

Ventolà, Ramírez, et al., 2002
Ventolà, L.; Ramírez, M.; Calvet, T.; Solans, X.; Cuevas-Diarte, M.A.; Negrier, P.; Mondieig, D.; van Miltenburg, J.C.; Oonk, H.A.J., Polymorphism of N -Alkanols: 1-Heptadecanol, 1-Octadecanol, 1-Nonadecanol, and 1-Eicosanol, Chem. Mater., 2002, 14, 2, 508-517, https://doi.org/10.1021/cm011010h . [all data]

van Miltenburg, Oonk, et al., 2001
van Miltenburg, J. Cees; Oonk, Harry A.J.; Ventola, Lourdes, Heat Capacities and Derived Thermodynamic Functions of 1-Octadecanol, 1-Nonadecanol, 1-Eicosanol, and 1-Docosanol between 10 K and 370 K, J. Chem. Eng. Data, 2001, 46, 1, 90-97, https://doi.org/10.1021/je000048s . [all data]

Chickos, Braton, et al., 1991
Chickos, James S.; Braton, C. Marie; Hesse, Donald G.; Liebman, Joel F., Estimating entropies and enthalpies of fusion of organic compounds, J. Org. Chem., 1991, 56, 3, 927-938, https://doi.org/10.1021/jo00003a007 . [all data]

Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, Henry's Law data, IR Spectrum, Mass spectrum (electron ionization), References

• Symbols used in this document:
  

  Cp,liquid	Constant pressure heat capacity of liquid
  Ptriple	Triple point pressure
  Tboil	Boiling point
  Tfus	Fusion (melting) point
  Ttriple	Triple point temperature
  d(ln(kH))/d(1/T)	Temperature dependence parameter for Henry's Law constant
  k°H	Henry's Law constant at 298.15K
  ΔcH°solid	Enthalpy of combustion of solid at standard conditions
  ΔfusH	Enthalpy of fusion
  ΔsubH	Enthalpy of sublimation
  ΔsubH°	Enthalpy of sublimation at standard conditions
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions

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