Naphthalene, 1,8-dimethyl-
- Formula: C12H12
- Molecular weight: 156.2237
- IUPAC Standard InChI: InChI=1S/C12H12/c1-9-5-3-7-11-8-4-6-10(2)12(9)11/h3-8H,1-2H3
- IUPAC Standard InChIKey: XAABPYINPXYOLM-UHFFFAOYSA-N
- CAS Registry Number: 569-41-5
- 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: 1,8-Dimethylnaphthalene
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Gas phase thermochemistry data
Go To: Top, 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 26.00 ± 0.72 | kcal/mol | Ccb | Mansson, 1974 | Author was aware that data differs from previously reported values; ALS |
| ΔfH°gas | 25.96 | kcal/mol | N/A | Good, 1973 | Value computed using ΔfHsolid° value of 25.9±1.2 kj/mol from Good, 1973 and ΔsubH° value of 82.7 kj/mol from Mansson, 1974.; DRB |
Constant pressure heat capacity of gas
| Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 9.70 | 50. | Thermodynamics Research Center, 1997 | p=1 bar.; GT |
| 16.7 | 100. | ||
| 23.6 | 150. | ||
| 30.74 | 200. | ||
| 41.54 | 273.15 | ||
| 45.22 | 298.15 | ||
| 45.48 | 300. | ||
| 59.25 | 400. | ||
| 70.79 | 500. | ||
| 80.19 | 600. | ||
| 87.81 | 700. | ||
| 94.14 | 800. | ||
| 99.45 | 900. | ||
| 103.9 | 1000. | ||
| 108. | 1100. | ||
| 111. | 1200. | ||
| 114. | 1300. | ||
| 116. | 1400. | ||
| 118. | 1500. |
References
Go To: Top, Gas phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Mansson, 1974
Mansson, M.,
A calorimetric study of peri strain in 1,8-Dimethylnaphthalene and 1,4,5,8-Tetramethylnaphthalene,
Acta Chem. Scand., Ser. B, 1974, 28, 677-680. [all data]
Good, 1973
Good, W.D.,
The enthalpies of combustion and formation of 1,8-dimethylnaphthalene, 2,3-dimethylnaphthalene, 2,6-dimethylnaphthalene, and 2,7-dimethylnaphthalene,
J. Chem. Thermodyn., 1973, 5, 715-720. [all data]
Thermodynamics Research Center, 1997
Thermodynamics Research Center,
Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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