Hexatriacontane
- Formula: C36H74
- Molecular weight: 506.9728
- IUPAC Standard InChIKey: YDLYQMBWCWFRAI-UHFFFAOYSA-N
- CAS Registry Number: 630-06-8
- 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: n-Hexatriacontane
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Condensed phase thermochemistry data
Go To: Top, Phase change data, 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: Eugene S. Domalski and Elizabeth D. Hearing
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
288.2 | 353. | Atkinson, Larkin, et al., 1969 | T = 353 to 453 K. Equation only. |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
201. | 300. | Hoehne, 1981 | T = 300 to 500 K. Cv = 1.64 J/g*K. |
Phase change data
Go To: Top, Condensed phase thermochemistry data, 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tfus | 349.1 ± 0.9 | K | AVG | N/A | Average of 26 out of 27 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 43.69 | kcal/mol | CGC | Chickos and Hanshaw, 2004 | Based on data from 534. to 565. K.; AC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
37.5 ± 0.5 | 484. | TE | Piacente, Fontana, et al., 1994 | Based on data from 452. to 516. K.; AC |
29.73 | 550. | A,E | Stephenson and Malanowski, 1987 | Based on data from 535. to 571. K. See also Kudchadker and Zwolinski, 1966.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
19.5 | 350.2 | DSC | Khimeche, Boumrah, et al., 2006 | AC |
24.500 | 349.2 | DSC | Wang, Tozaki, et al., 2006 | AC |
20.9 | 349. | DSC | Marti, Kaisersberger, et al., 2004 | AC |
20.9 | 348.9 | AC | Wang, Tan, et al., 1999 | Based on data from 80. to 370. K.; AC |
21.23 | 349.2 | N/A | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
6.862 | 345.4 | Domalski and Hearing, 1996 | CAL |
21.03 | 347.1 | ||
60.805 | 349.2 |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
2.370 | 345.35 | crystaline, III | crystaline, II | Company, 1973 | DH |
7.3000 | 347.05 | crystaline, II | crystaline, I | Company, 1973 | DH |
31.2299 | 349.15 | crystaline, I | liquid | Company, 1973 | DH |
2.370 | 345.25 | crystaline, III | crystaline, II | Schaerer, Busso, et al., 1955 | DH |
7.3000 | 346.95 | crystaline, II | crystaline, I | Schaerer, Busso, et al., 1955 | DH |
21.230 | 349.05 | crystaline, I | liquid | Schaerer, Busso, et al., 1955 | DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
6.86 | 345.35 | crystaline, III | crystaline, II | Company, 1973 | DH |
21.0 | 347.05 | crystaline, II | crystaline, I | Company, 1973 | DH |
89.44 | 349.15 | crystaline, I | liquid | Company, 1973 | DH |
6.86 | 345.25 | crystaline, III | crystaline, II | Schaerer, Busso, et al., 1955 | DH |
21.0 | 346.95 | crystaline, II | crystaline, I | Schaerer, Busso, et al., 1955 | DH |
60.83 | 349.05 | crystaline, I | liquid | Schaerer, Busso, et al., 1955 | DH |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Atkinson, Larkin, et al., 1969
Atkinson, C.M.L.; Larkin, J.A.; Richardson, M.J.,
Enthalpy changes in molten n-alkanes and polyethylene,
J. Chem. Thermodynam., 1969, 1, 435-445. [all data]
Hoehne, 1981
Hoehne, G.W.H.,
Transitions of n-alkanes above the melting point,
Polym. Bull. (Berlin), 1981, 6, 41-46. [all data]
Chickos and Hanshaw, 2004
Chickos, James S.; Hanshaw, William,
Vapor Pressures and Vaporization Enthalpies of the n -Alkanes from C 31 to C 38 at T = 298.15 K by Correlation Gas Chromatography,
J. Chem. Eng. Data, 2004, 49, 3, 620-630, https://doi.org/10.1021/je030236t
. [all data]
Piacente, Fontana, et al., 1994
Piacente, Vincenzo; Fontana, Danilo; Scardala, Paolo,
Enthalpies of Vaporization of a Homologous Series of n-Alkanes Determined from Vapor Pressure Measurements,
J. Chem. Eng. Data, 1994, 39, 2, 231-237, https://doi.org/10.1021/je00014a009
. [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]
Kudchadker and Zwolinski, 1966
Kudchadker, A.P.; Zwolinski, B.J.,
Vapor Pressure and Boiling Points of Normal Alkanes, C 21 to C 100 .,
J. Chem. Eng. Data, 1966, 11, 2, 253-255, https://doi.org/10.1021/je60029a039
. [all data]
Khimeche, Boumrah, et al., 2006
Khimeche, Kamel; Boumrah, Yacine; Benziane, Mokhtar; Dahmani, Abdallah,
Solid--liquid equilibria and purity determination for binary n-alkane+naphthalene systems,
Thermochimica Acta, 2006, 444, 2, 166-172, https://doi.org/10.1016/j.tca.2006.03.011
. [all data]
Wang, Tozaki, et al., 2006
Wang, Shaolan; Tozaki, Ken-Ichi; Hayashi, Hideko; Inaba, Hideaki; Yamamoto, Hiroko,
Observation of multiple phase transitions in some even n-alkanes using a high resolution and super-sensitive DSC,
Thermochimica Acta, 2006, 448, 2, 73-81, https://doi.org/10.1016/j.tca.2006.06.022
. [all data]
Marti, Kaisersberger, et al., 2004
Marti, E.; Kaisersberger, E.; Emmerich, W.-D.,
New aspects of thermal analysis, Part I. Resolution of DSC and means for its optimization,
Journal of Thermal Analysis and Calorimetry, 2004, 77, 3, 905-934, https://doi.org/10.1023/B:JTAN.0000041669.06816.36
. [all data]
Wang, Tan, et al., 1999
Wang, Lan; Tan, Zhi-Cheng; Meng, Shuang-He; Liang, Dong-Bai,
Low-temperature heat capacity and phase transition of n-hexatriacontane,
Thermochimica Acta, 1999, 342, 1-2, 59-65, https://doi.org/10.1016/S0040-6031(99)00308-1
. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Company, 1973
Company, J.C.,
Measurement and interpretation of crystallization equilibriums of heavy paraffin and aromatic hydrocarbon solutions,
Chem. Eng. Sci., 1973, 28, 318-323. [all data]
Schaerer, Busso, et al., 1955
Schaerer, A.A.; Busso, C.J.; Smith, A.E.; Skinner, L.B.,
Properties of pure normal alkanes in the C17 to C36 range,
J. Am. Chem. Soc., 1955, 77, 2017-2019. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid Cp,solid Constant pressure heat capacity of solid Tfus Fusion (melting) point ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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