Heptatriacontane
- Formula: C37H76
- Molecular weight: 520.9993
- IUPAC Standard InChIKey: PXEZIKSRSYGOED-UHFFFAOYSA-N
- CAS Registry Number: 7194-84-5
- Chemical structure:
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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 |
---|---|---|---|---|---|
Tfus | 312. | K | N/A | Staudinger and Staiger, 1935 | Uncertainty assigned by TRC = 5. K; note discrepancy with 1933 staker 0; TRC |
Tfus | 301. | K | N/A | Staudinger and Kern, 1933 | Uncertainty assigned by TRC = 5. K; value reported for stable form, metastable form was detected; TRC |
Tfus | 349.4 | K | N/A | Buchler and Graves, 1927 | Uncertainty assigned by TRC = 4. K; TRC |
Tfus | 349.6 | K | N/A | Buchler and Graves, 1927 | Uncertainty assigned by TRC = 4. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 44.81 | 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 |
---|---|---|---|---|
37.0 ± 0.5 | 491. | TE | Piacente, Fontana, et al., 1994 | Based on data from 471. to 511. K.; AC |
30.21 | 556. | A,E | Stephenson and Malanowski, 1987 | Based on data from 541. to 778. K. See also Kudchadker and Zwolinski, 1966.; AC |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Staudinger and Staiger, 1935
Staudinger, H.; Staiger, F.,
Chem. Ber., 1935, 68, 707. [all data]
Staudinger and Kern, 1933
Staudinger; Kern,
Chem. Ber., 1933, 66, 373. [all data]
Buchler and Graves, 1927
Buchler, C.C.; Graves, G.D.,
Ind. Eng. Chem., 1927, 19, 718. [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]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tfus Fusion (melting) point 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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