- Formula: C10H14
- Molecular weight: 134.2182
- IUPAC Standard InChI:
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- IUPAC Standard InChIKey: BFIMMTCNYPIMRN-UHFFFAOYSA-N
- CAS Registry Number: 527-53-7
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
- Other names: Isodurene; 1,2,3,5-Tetramethylbenzene
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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
|fH°gas||-43.2 ± 1.3||kJ/mol||Ccb||Draeger, 1985||Unpublished measurement of W.D.Good; ALS|
|fH°gas||-44.4 ± 1.2||kJ/mol||N/A||Good, 1975||Value computed using «DELTA»fHliquid° value of -96.4±1.2 kj/mol from Good, 1975 and «DELTA»vapH° value of 52.0±0.17 kj/mol from missing citation.; DRB|
|fH°gas||-46.5 ± 3.0||kJ/mol||N/A||Prosen, Johnson, et al., 1946||Value computed using «DELTA»fHliquid° value of -98.5±3 kj/mol from Prosen, Johnson, et al., 1946 and «DELTA»vapH° value of 52.0±0.17 kj/mol from missing citation.; DRB|
Constant pressure heat capacity of gas
|Cp,gas (J/mol*K)||Temperature (K)||Reference||Comment|
|135.0||200.||Draeger, 1985||There is an appreciable difference between values of S(T) and Cp(T) for tetra-, penta-, and hexamethylbenzene from earlier statistical thermodynamics calculation [ Hastings S.H., 1957] and those obtained by [ Draeger, 1985] (up to 5, 9, and 16 J/mol*K, respectively). Results [ Draeger, 1985] are more reliable and they agree with experimental data for hexamethylbenzene.; GT|
|180.7 ± 0.4||298.15|
Go To: Top, Gas phase thermochemistry data, Notes
Draeger, J.A., The methylbenzenes II. Fundamental vibrational shifts, statistical thermodynamic functions, and properties of formation, J. Chem. Thermodyn., 1985, 17, 263-275. [all data]
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]
Hastings S.H., 1957
Hastings S.H., Thermodynamic properties of selected methylbenzenes from 0 to 1000 K, J. Phys. Chem., 1957, 61, 730-735. [all data]
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas fH°gas Enthalpy of formation of gas at standard conditions
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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