Triacontane
- Formula: C30H62
- Molecular weight: 422.8133
- IUPAC Standard InChIKey: JXTPJDDICSTXJX-UHFFFAOYSA-N
- CAS Registry Number: 638-68-6
- 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-Triacontane
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Condensed phase thermochemistry data
Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, 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 solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
558. | 300. | Hoehne, 1981 | T = 300 to 500 K. Cv = 1.30 J/g*K. |
808.8 | 301. | Garner, Van Bibber, et al., 1931 | crystaline, II phase; T = 289 to 373 K. Mean value 16 to 38°C, β-form. |
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:
BS - Robert L. Brown and Stephen E. Stein
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 |
---|---|---|---|---|---|
Tboil | 722.9 | K | N/A | Weast and Grasselli, 1989 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 338.9 ± 0.5 | K | AVG | N/A | Average of 19 out of 22 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 152.3 | kJ/mol | CGC | Chickos and Hanshaw, 2004 | Based on data from 434. to 539. K.; AC |
ΔvapH° | 164.5 ± 0.4 | kJ/mol | CGC | Nichols, Orf, et al., 2000 | AC |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
531.7 | 0.004 | Aldrich Chemical Company Inc., 1990 | BS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
143. ± 2. | 454. | TE | Piacente, Fontana, et al., 1994 | Based on data from 422. to 487. K.; AC |
111.3 | 510. | A,E | Stephenson and Malanowski, 1987 | Based on data from 495. to 723. K. See also Kudchadker and Zwolinski, 1966.; AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
68.83 | 338.7 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
111.82 | 335.3 | Domalski and Hearing, 1996 | CAL |
203.24 | 338.7 |
Temperature of phase transition
Ttrs (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|
335.15 | crystaline, II | crystaline, I | Schaerer, Busso, et al., 1955 | DH |
338.55 | crystaline, I | liquid | Schaerer, Busso, et al., 1955 | DH |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
37.489 | 335.25 | crystaline, II | crystaline, I | Company, 1973 | DH |
68.827 | 338.65 | crystaline, I | liquid | Company, 1973 | DH |
36.484 | 332.2 | crystaline, II | crystaline, I | Garner, Van Bibber, et al., 1931 | DH |
68.827 | 338.7 | crystaline, I | liquid | Garner, Van Bibber, et al., 1931 | DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
111.8 | 335.25 | crystaline, II | crystaline, I | Company, 1973 | DH |
203.2 | 338.65 | crystaline, I | liquid | Company, 1973 | DH |
109.8 | 332.2 | crystaline, II, á | crystaline, I, à transition | Garner, Van Bibber, et al., 1931 | DH |
203.2 | 338.7 | crystaline, I | liquid | Garner, Van Bibber, et al., 1931 | DH |
IR Spectrum
Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), Gas Chromatography, 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: Timothy J. Johnson, Tanya L. Myers, Yin-Fong Su, Russell G. Tonkyn, Molly Rose K. Kelly-Gorham, and Tyler O. Danby
Condensed Phase Spectrum
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Additional Data
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Detailed documentation for this spectrum is available.
Particle size distribution data for this spectrum is available.
Owner | Public domain |
---|---|
Origin | Pacific Northwest National Laboratory Under IARPA Contract |
Date | March 2017 |
State | solid |
Instrument | Bruker Tensor 37 FTIR |
Aperture | 6 mm |
External diffuse reflectance accessory | A 562-G integrating sphere |
Beam splitter | Ge on KBr |
Diameter of detector port in sphere | 2×2 mm, 60° field of view MCT |
Sphere diameter | 75 mm |
Acquisition mode | double-sided, forward-backward |
Scanner velocity | 40 kHz |
Co-added scans | 2048 |
Phase resolution | 32.00 |
Phase correction | Mertz |
Zero filling | 4× |
Spectral range | 7,500 to 600 cm-1 saved; 7500 to 600 cm-1 reported |
Resolution | 0.96450126 |
Spectral resolution | 4 cm-1 |
Wavenumber accuracy | ± 0.4 cm-1 |
Apodization function | Blackman-Harris 3-term |
Low-pass filter | Open |
Switch gain on | 512 points |
Mass spectrum (electron ionization)
Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Gas Chromatography, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | Japan AIST/NIMC Database- Spectrum MS-NW-2836 |
NIST MS number | 231640 |
Gas Chromatography
Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Lee's RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-5MS | 467.01 | Chen, Keeran, et al., 2002 | 30. m/0.25 mm/0.5 μm, 40. C @ 1. min, 4. K/min; Tend: 310. C |
Capillary | DB-1 | 488.4 | Johnson, Urso, et al., 1997 | 30. m/0.2 mm/0.25 μm, 50. C @ 2. min, 5. K/min, 300. C @ 5. min |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Hoehne, 1981
Hoehne, G.W.H.,
Transitions of n-alkanes above the melting point,
Polym. Bull. (Berlin), 1981, 6, 41-46. [all data]
Garner, Van Bibber, et al., 1931
Garner, W.E.; Van Bibber, K.; King, A.M.,
The melting points and heats of crystallization of the normal long-chain hydrocarbons,
J. Chem. Soc. (London), 1931, 1931, 1533-1541. [all data]
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Chickos and Hanshaw, 2004
Chickos, James S.; Hanshaw, William,
Vapor Pressures and Vaporization Enthalpies of the n -Alkanes from C 21 to C 30 at T = 298.15 K by Correlation Gas Chromatography,
J. Chem. Eng. Data, 2004, 49, 1, 77-85, https://doi.org/10.1021/je0301747
. [all data]
Nichols, Orf, et al., 2000
Nichols, Gary; Orf, Jennifer; Reiter, Sarah M.; Chickos, James; Gokel, George W.,
The vaporization enthalpies of some crown and polyethers by correlation gas chromatography,
Thermochimica Acta, 2000, 346, 1-2, 15-28, https://doi.org/10.1016/S0040-6031(99)00405-0
. [all data]
Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc.,
Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [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]
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]
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]
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]
Chen, Keeran, et al., 2002
Chen, P.H.; Keeran, W.S.; Van Ausdale, W.A.; Schindler, D.R.; Roberts, D.W.,
Application of Lee retention indices to the confirmation of tentatively identified compounds from GC/MS analysis of environmental samples, Technical paper, Analytical Services Division, Environmental ScienceEngineering, Inc, PO Box 1703, Gainesville, FL 32602, 2002, 11. [all data]
Johnson, Urso, et al., 1997
Johnson, C.I.; Urso, A.; Geleta, L.,
Broad spectrum analysis of municipal and industrial effluents discharged into the Peace, Athabasca and Slave river basins: characterization of effluent samples, 1994 - Volume 1 of 2, Northern River Basins Study Project Report No. 121, Norther River Basins Study, Edmonton, Alberta, 1997, 27. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid Tboil Boiling point Tfus Fusion (melting) point Ttrs Temperature of phase transition 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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