- Formula: C8H18
- Molecular weight: 114.2285
- IUPAC Standard InChI:
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- IUPAC Standard InChIKey: NHTMVDHEPJAVLT-UHFFFAOYSA-N
- CAS Registry Number: 540-84-1
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
- Other names: Isooctane; Isobutyltrimethylmethane; 2,2,4-Trimethylpentane; (CH3)2CHCH2C(CH3)3; Isobutyltrimethylethane; UN 1262
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Reaction thermochemistry data
Go To: Top, References, Notes
Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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By formula: C8H16 + H2 = C8H18
|rH°||-107.||kJ/mol||Chyd||Turner, Nettleton, et al., 1958||liquid phase; solvent: Acetic acid|
|rH°||-112.9 ± 0.3||kJ/mol||Chyd||Dolliver, Gresham, et al., 1937||gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -114.0 ± 0.3 kJ/mol; At 355 °K|
|rH°||-119.6 ± 3.3||kJ/mol||Chyd||Crawford and Parks, 1936||liquid phase|
By formula: C8H16 + H2 = C8H18
|rH°||-112.||kJ/mol||Chyd||Turner, Nettleton, et al., 1958||liquid phase; solvent: Acetic acid|
|rH°||-118.8||kJ/mol||Chyd||Dolliver, Gresham, et al., 1937||gas phase; At 355 °K|
By formula: C8H18 = C8H18
|rH°||-9.4 ± 1.0||kJ/mol||Ciso||Prosen and Rossini, 1945||liquid phase; Calculated from «DELTA»Hc|
Go To: Top, Reaction thermochemistry data, Notes
Turner, Nettleton, et al., 1958
Turner, R.B.; Nettleton, J.E.; Perelman, Heats of Hydrogenation. VI. Heats of hydrogenation of some substituted ethylenes, J. Am. Chem. Soc., 1958, 80, 1430-1433. [all data]
Dolliver, Gresham, et al., 1937
Dolliver, M.a.; Gresham, T.L.; Kistiakowsky, G.B.; Vaughan, W.E., Heats of organic reactions. V. Heats of hydrogenation of various hydrocarbons, J. Am. Chem. Soc., 1937, 59, 831-841. [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]
Crawford and Parks, 1936
Crawford, B.L., Jr.; Parks, G.S., The heat of hydrogenation of diisobutylene, J. Am. Chem. Soc., 1936, 58, 373. [all data]
Prosen and Rossini, 1945
Prosen, E.J.; Rossini, F.D., Heats of isomerization of the 18 octanes, J. Res. NBS, 1945, 34, 163-174. [all data]
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
rH° Enthalpy of reaction at standard conditions
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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