Octadecanamide
- Formula: C18H37NO
- Molecular weight: 283.4925
- IUPAC Standard InChIKey: LYRFLYHAGKPMFH-UHFFFAOYSA-N
- CAS Registry Number: 124-26-5
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Stearamide; Adogen 42; Octadecamide; Octadecylamide; Stearic acid amide; Stearic amide; Stearoylamide; Stearoylamine; Stearylamide; Kemamide S; Armid 18; Advawax 290; Amide T; Crodamide S; Crodamide SR; Petrac vyn-eze; Uniwax 1750; NSC 66462
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Phase change data
Go To: Top, 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 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 | 379.1 | K | N/A | Chickos, Braton, et al., 1991 | Uncertainty assigned by TRC = 0.2 K; TRC |
Tfus | 382.05 | K | N/A | Mod, Magne, et al., 1960 | Uncertainty assigned by TRC = 0.3 K; TRC |
Tfus | 382.2 | K | N/A | Davies, Jones, et al., 1959 | Uncertainty assigned by TRC = 0.6 K; TRC |
Reduced pressure boiling point
Tboil (K) | Pressure (atm) | Reference | Comment |
---|---|---|---|
523.7 | 0.016 | Weast and Grasselli, 1989 | BS |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
46.8 ± 1.0 | 373. | ME | Davies, Jones, et al., 1959 | Based on data from 367. to 379. K. See also Stephenson and Malanowski, 1987.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
13.1 | 379.7 | DSC | Abate, Badea, et al., 2008 | AC |
14.32 | 377.2 | N/A | Acree, 1993 | AC |
IR Spectrum
Go To: Top, Phase change data, 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: Coblentz Society, Inc.
Condensed Phase Spectrum
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Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here.
Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
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Owner | COBLENTZ SOCIETY Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | HORMEL INSTITUTE |
Source reference | COBLENTZ NO. 2025 |
Date | Not specified, most likely prior to 1970 |
State | SOLID (MELT) RECRYSTALLIZED FOUR TIMES |
Instrument | PERKIN-ELMER |
Resolution | 4 |
Sampling procedure | TRANSMISSION |
Data processing | DIGITIZED BY NIST FROM HARD COPY |
Mass spectrum (electron ionization)
Go To: Top, Phase change data, IR Spectrum, 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
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
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 | Japan AIST/NIMC Database- Spectrum MS-NW-6024 |
NIST MS number | 233208 |
References
Go To: Top, Phase change 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.
Chickos, Braton, et al., 1991
Chickos, J.S.; Braton, C.M.; Hesse, D.G.; Liebman, J.F.,
Estimating entropies and enthalpies of fusion of organic compounds,
J. Org. Chem., 1991, 56, 3, 927, https://doi.org/10.1021/jo00003a007
. [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]
Davies, Jones, et al., 1959
Davies, M.; Jones, A.H.; Thomas, G.H.,
The lattice energies of the straight-chain primary amides,
Trans. Faraday Soc., 1959, 55, 1100. [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]
Abate, Badea, et al., 2008
Abate, Lorenzo; Badea, Elena; Blanco, Ignazio; Della Gatta, Giuseppe,
Heat Capacities and Enthalpies of Solid-Solid Transitions and Fusion of a Series of Eleven Primary Alkylamides by Differential Scanning Calorimetry,
J. Chem. Eng. Data, 2008, 53, 4, 959-965, https://doi.org/10.1021/je700662a
. [all data]
Acree, 1993
Acree, William E.,
Thermodynamic properties of organic compounds,
Thermochimica Acta, 1993, 219, 97-104, https://doi.org/10.1016/0040-6031(93)80486-T
. [all data]
Notes
Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔfusH Enthalpy of fusion ΔsubH Enthalpy of sublimation - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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