Octadecanamide
- Formula: C18H37NO
- Molecular weight: 283.4925
- IUPAC Standard InChI: InChI=1S/C18H37NO/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h2-17H2,1H3,(H2,19,20)
- 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
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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 | 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 (bar) | Reference | Comment |
|---|---|---|---|
| 523.7 | 0.016 | Weast and Grasselli, 1989 | BS |
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 195.8 ± 4.2 | 373. | ME | Davies, Jones, et al., 1959 | Based on data from 367. - 379. K. See also Stephenson and Malanowski, 1987.; AC |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 54.8 | 379.7 | DSC | Abate, Badea, et al., 2008 | AC |
| 59.91 | 377.2 | N/A | Acree, 1993 | 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.
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, 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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