- Formula: C10H14
- Molecular weight: 134.2182
- IUPAC Standard InChI:
- Download the identifier in a file.
- IUPAC Standard InChIKey: UOHMMEJUHBCKEE-UHFFFAOYSA-N
- CAS Registry Number: 488-23-3
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
- Other names: Prehnitene; Prehnitol; 1,2,3,4-Tetramethylbenzene
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Condensed 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
DH - Eugene S. Domalski and Elizabeth D. Hearing
|fH°liquid||-90.2 ± 1.2||kJ/mol||Ccb||Good, 1975||ALS|
|fH°liquid||-96.4 ± 3.0||kJ/mol||Ccb||Prosen, Johnson, et al., 1946||ALS|
|cH°liquid||-5845.7 ± 1.1||kJ/mol||Ccb||Good, 1975||Corresponding «DELTA»fHºliquid = -90.21 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS|
|cH°liquid||-5839.6 ± 3.0||kJ/mol||Ccb||Prosen, Johnson, et al., 1946||Corresponding «DELTA»fHºliquid = -96.32 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS|
|cH°liquid||-5827.5 ± 5.9||kJ/mol||Ccb||Banse and Parks, 1933||Reanalyzed by Cox and Pilcher, 1970, Original value = -5823.58 kJ/mol; Corresponding «DELTA»fHºliquid = -108.4 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS|
|S°liquid||290.8||J/mol*K||N/A||Huffman, Parks, et al., 1931||Extrapolation below 90 K, 76.32 J/mol*K.; DH|
Constant pressure heat capacity of liquid
|Cp,liquid (J/mol*K)||Temperature (K)||Reference||Comment|
|244.3||298.||Kurbatov, 1947||T = 12 to 198°C, mean Cp, four temperatures.; DH|
|236.0||291.9||Huffman, Parks, et al., 1931||T = 91 to 292 K. Value is unsmoothed experimental datum.; DH|
Go To: Top, Condensed phase thermochemistry data, Notes
Good, W.D., The standard enthalpies of combustion and formation of n-butylbenzene, the dimethylethylbenzenes, and the tetramethylbenzenes in the condensed state, J. Chem. Thermodyn., 1975, 7, 49-59. [all data]
Prosen, Johnson, et al., 1946
Prosen, E.J.; Johnson, W.H.; Rossini, F.D., Heats of combustion and formation at 25°C of the alkylbenzenes through C10H14, and of the higher normal monoalkylbenzenes, J. Res. NBS, 1946, 36, 455-461. [all data]
Banse and Parks, 1933
Banse, H.; Parks, G.S., Thermal data on organic compounds. XII. The heats of combustion of nine hydrocarbons, J. Am. Chem. Soc., 1933, 55, 3223-3227. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Huffman, Parks, et al., 1931
Huffman, H.M.; Parks, G.S.; Barmore, M., Thermal data on organic compounds. X. Further studies on the heat capacities, entropies and free energies of hydrocarbons, J. Am. Chem. Soc., 1931, 53, 3876-3888. [all data]
Kurbatov, V.Ya., Specific heat of liquids. I. Specific heat of benzenoid hydrocarbons, Zhur. Obshch. Khim., 1947, 17, 1999-2003. [all data]
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions cH°liquid Enthalpy of combustion of liquid at standard conditions fH°liquid Enthalpy of formation of liquid at standard conditions
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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