Cyclohexane, 1,1-dimethyl-
- Formula: C8H16
- Molecular weight: 112.2126
- IUPAC Standard InChI: InChI=1S/C8H16/c1-8(2)6-4-3-5-7-8/h3-7H2,1-2H3
- IUPAC Standard InChIKey: QEGNUYASOUJEHD-UHFFFAOYSA-N
- CAS Registry Number: 590-66-9
- 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: Gem-Dimethylcyclohexane; 1,1-Dimethylcyclohexane
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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 by: Glushko Thermocenter, Russian Academy of Sciences, Moscow
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°gas | 87.220 | cal/mol*K | N/A | Huffman H.M., 1949 |
Constant pressure heat capacity of gas
| Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 9.118 | 50. | Thermodynamics Research Center, 1997 | p=1 bar. There is an appreciable difference, mainly at high temperatures, with values estimated earlier by a method of increments [ Beckett C.W., 1947]. |
| 13.88 | 100. | ||
| 19.51 | 150. | ||
| 25.22 | 200. | ||
| 34.49 | 273.15 | ||
| 37.88 | 298.15 | ||
| 38.15 | 300. | ||
| 51.63 | 400. | ||
| 63.58 | 500. | ||
| 73.57 | 600. | ||
| 81.91 | 700. | ||
| 88.91 | 800. | ||
| 94.89 | 900. | ||
| 100.0 | 1000. | ||
| 104.3 | 1100. | ||
| 108.1 | 1200. | ||
| 111.3 | 1300. | ||
| 114.1 | 1400. | ||
| 116.5 | 1500. | ||
| 121.1 | 1750. | ||
| 124.5 | 2000. | ||
| 126.9 | 2250. | ||
| 128.7 | 2500. | ||
| 130.1 | 2750. | ||
| 131.1 | 3000. |
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.
Huffman H.M., 1949
Huffman H.M.,
Low-temperature thermal data on eight C8H16 alkylcyclohexanes,
J. Am. Chem. Soc., 1949, 71, 584-592. [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]
Beckett C.W., 1947
Beckett C.W.,
The thermodynamic properties and molecular structure of cyclohexane, methylcyclohexane, ethylcyclohexane, and seven dimethylcyclohexanes,
J. Am. Chem. Soc., 1947, 69, 2488-2495. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas S°gas Entropy of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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