Benzene, eicosyl-
- Formula: C26H46
- Molecular weight: 358.6434
- IUPAC Standard InChI: InChI=1S/C26H46/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-20-23-26-24-21-19-22-25-26/h19,21-22,24-25H,2-18,20,23H2,1H3
- IUPAC Standard InChIKey: HPPLZROUJULWGU-UHFFFAOYSA-N
- CAS Registry Number: 2398-68-7
- 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: Eicosane, 1-phenyl-; n-Eicosylbenzene; 1-Phenyleicosane
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Phase change data
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible 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 as indicated in comments:
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 | 315. ± 3. | K | AVG | N/A | Average of 6 values; Individual data points |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 94.7 | 514. | A,MG | Stephenson and Malanowski, 1987 | Based on data from 499. to 538. K. See also Schiessler and Whitmore, 1955.; AC |
Gas phase ion energetics data
Go To: Top, Phase change data, Mass spectrum (electron ionization), UV/Visible 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: Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
Ionization energy determinations
| IE (eV) | Method | Reference |
|---|---|---|
| 9.3 ± 0.1 | EI | King, 1965 |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| C7H7+ | 11.8 ± 0.1 | ? | EI | King, 1965 | |
| C7H8+ | 11.4 ± 0.1 | ? | EI | King, 1965 | |
| C8H8+ | 12.2 ± 0.1 | ? | EI | King, 1965 | |
| C10H13+ | 10.9 ± 0.1 | ? | EI | King, 1965 |
Mass spectrum (electron ionization)
Go To: Top, Phase change data, Gas phase ion energetics data, UV/Visible 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
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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 | CONTINENTAL OIL CO., PONCA CITY, OKLA, USA |
| NIST MS number | 34745 |
UV/Visible spectrum
Go To: Top, Phase change data, Gas phase ion energetics 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.
Spectrum
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Additional Data
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| Source | Kusakov, et al., 1963 |
|---|---|
| Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
| Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
| Source reference | RAS UV No. 20017 |
| Instrument | unknown |
| Melting point | 44 |
References
Go To: Top, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Schiessler and Whitmore, 1955
Schiessler, R.W.; Whitmore, F.C.,
Properties of High Molecular Weight Hydrocarbons,
Ind. Eng. Chem., 1955, 47, 8, 1660-1665, https://doi.org/10.1021/ie50548a054
. [all data]
King, 1965
King, A.B.,
Mass-spectral fragmentation of phenyl-n-alkanes,
J. Chem. Phys., 1965, 42, 3526. [all data]
Kusakov, et al., 1963
Kusakov, M.M., et al.,
Ultraviolet Absorption Spectra of Aromatic Hydrocarbons, 1963, 53. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible spectrum, References
- Symbols used in this document:
AE Appearance energy Tfus Fusion (melting) point ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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