3,3,6,6-Tetramethyloctane
- Formula: C12H26
- Molecular weight: 170.3348
- IUPAC Standard InChI: InChI=1S/C12H26/c1-7-11(3,4)9-10-12(5,6)8-2/h7-10H2,1-6H3
- IUPAC Standard InChIKey: PAEUGKMMSQUAGH-UHFFFAOYSA-N
- CAS Registry Number: 62199-46-6
- Chemical structure:
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Condensed phase thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔcH°liquid | -1927.6 | kcal/mol | Ccb | Shtekher, Skuratov, et al., 1959 | Corresponding ΔfHºliquid = -89.1 kcal/mol (simple calculation by NIST; no Washburn corrections) |
Phase change data
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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 462.9 | K | N/A | Birch, Gripp, et al., 1952 | Uncertainty assigned by TRC = 0.6 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 199.56 | K | N/A | Birch, Gripp, et al., 1952 | Uncertainty assigned by TRC = 0.2 K; TRC |
| Tfus | 199.87 | K | N/A | Birch, Gripp, et al., 1952 | Uncertainty assigned by TRC = 0.1 K; TRC |
Enthalpy of vaporization
| ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 12.6 | 362. | A | Stephenson and Malanowski, 1987 | Based on data from 347. to 463. K.; AC |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Shtekher, Skuratov, et al., 1959
Shtekher, S.M.; Skuratov, S.M.; Daukshas, V.K.; Levina, R.Ya.,
Heats of combustion of some branched alkanes,
Dokl. Akad. Nauk SSSR, 1959, 127, 812-814. [all data]
Birch, Gripp, et al., 1952
Birch, S.F.; Gripp, V.E.; Mcallan, D.T.; Nathan, W.S.,
Preparation and Properties of Some Hydrocarbons With Recurrent Groups,
J. Chem. Soc., 1952, 1952, 1363. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Notes
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- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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