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Heptane, 2,2,4,6,6-pentamethyl-

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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: Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference
83.886298.15Costas, Huu, et al., 1988
83.886298.15Perez-Casas, Aicart, et al., 1988

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
Tboil451. ± 2.KAVGN/AAverage of 8 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus206. ± 3.KAVGN/AAverage of 9 values; Individual data points
Quantity Value Units Method Reference Comment
Deltavap11.70kcal/molN/AMajer and Svoboda, 1985 
Deltavap11.7 ± 0.05kcal/molCMelaugh, Mansson, et al., 1976AC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction 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

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

Dodecane = Heptane, 2,2,4,6,6-pentamethyl-

By formula: C12H26 = C12H26

Quantity Value Units Method Reference Comment
Deltar-3.04kcal/molCcbMelaugh, Mansson, et al., 1976liquid phase; Unpublished results of Zwolinski and Desai
Deltar-2.91 ± 0.33kcal/molCcbMelaugh, Mansson, et al., 1976liquid phase

IR Spectrum

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Gas Phase Spectrum

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IR spectrum
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Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Download spectrum in JCAMP-DX format.

Owner NIST Standard Reference Data Program
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Sadtler Research Labs Under US-EPA Contract
State gas

This IR spectrum is from the NIST/EPA Gas-Phase Infrared Database .


Mass spectrum (electron ionization)

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Additional Data

View image of digitized spectrum (can be printed in landscape orientation).

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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.
NIST MS number 21999

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


Gas Chromatography

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
PackedApolane130.990.Dutoit, 1991Column length: 3.7 m

Kovats' RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryApiezon L980.Louis, 1971N2, 1. K/min; Column length: 50. m; Column diameter: 0.25 mm; Tstart: 60. C

Van Den Dool and Kratz RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryCP-Sil 8CB-MS990.Elmore, Cooper, et al., 20050. m/0.25 mm/0.25 «mu»m, He, 40. C @ 2. min, 4. K/min, 280. C @ 5. min
CapillaryHP-5997.Insausti, Goñi, et al., 200550. m/0.32 mm/1.05 «mu»m, He, 35. C @ 15. min, 8. K/min, 220. C @ 5. min
CapillaryPONA996.Vendeuvre, Bertoncini, et al., 200550. m/0.2 mm/0.5 «mu»m, 2. K/min; Tstart: 50. C
CapillaryPONA999.Vendeuvre, Bertoncini, et al., 200550. m/0.2 mm/0.5 «mu»m, 5. K/min; Tstart: 50. C
CapillaryDB-5997.0Xu, van Stee, et al., 200330. m/0.25 mm/1. «mu»m, He, 2.5 K/min; Tstart: 50. C; Tend: 200. C
CapillaryCP Sil 8 CB985.Oruna-Concha, Ames, et al., 200260. m/0.25 mm/0.25 «mu»m, He, 40. C @ 8. min, 4. K/min, 250. C @ 10. min
CapillaryPetrocol DH994.White, Hackett, et al., 1992100. m/0.25 mm/0.5 «mu»m, He, 1. K/min; Tstart: 30. C; Tend: 220. C
CapillaryUltra-1990.04Haynes and Pitzer, 198550. m/0.22 mm/0.33 «mu»m, He, 1. K/min; Tstart: -30. C; Tend: 240. C
CapillaryUltra-1992.84Haynes and Pitzer, 198550. m/0.22 mm/0.33 «mu»m, He, 2. K/min; Tstart: -30. C; Tend: 240. C
CapillaryUltra-1994.39Haynes and Pitzer, 198550. m/0.22 mm/0.33 «mu»m, He, 3. K/min; Tstart: -30. C; Tend: 240. C
CapillaryUltra-2987.85Haynes and Pitzer, 198550. m/0.22 mm/0.33 «mu»m, He, 1. K/min; Tstart: -30. C; Tend: 240. C
CapillaryUltra-2990.16Haynes and Pitzer, 198550. m/0.22 mm/0.33 «mu»m, He, 2. K/min; Tstart: -30. C; Tend: 240. C
CapillaryUltra-2992.02Haynes and Pitzer, 198550. m/0.22 mm/0.33 «mu»m, He, 3. K/min; Tstart: -30. C; Tend: 240. C

Van Den Dool and Kratz RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryDB-11003.Place, Imhof, et al., 200360. m/0.32 mm/1. «mu»m, He; Program: 35C(5min) => 10C/min => 45C (5min) => 5C/min => 250C (10min)
CapillaryCP Sil 8 CB989.Oruna-Concha, Bakker, et al., 200260. m/0.25 mm/0.25 «mu»m, He; Program: 0C => rapidly => 40C(8min) => 4C/min => 250C(10min)

Van Den Dool and Kratz RI, polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillarySupelcowax-10957.Chung and Cadwallader, 199360. m/0.25 mm/0.25 «mu»m, He, 40. C @ 5. min, 2. K/min, 195. C @ 40. min
CapillarySupelcowax-10954.Tanchotikul and Hsieh, 198960. m/0.25 mm/0.25 «mu»m, 40. C @ 5. min, 2. K/min, 175. C @ 20. min
CapillarySupelcowax-10956.Tanchotikul and Hsieh, 198960. m/0.25 mm/0.25 «mu»m, 40. C @ 5. min, 2. K/min, 175. C @ 20. min

Normal alkane RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryPetrocol DH994.Supelco, 2012100. m/0.25 mm/0.50 «mu»m, Helium, 20. C @ 15. min, 15. K/min, 220. C @ 30. min
CapillaryHP-5 MS995.Xu, Han, et al., 201230. m/0.25 mm/0.25 «mu»m, 60. C @ 2. min, 15. K/min, 300. C @ 10. min
CapillaryHP-5 MS995.Xu, Han, et al., 200930. m/0.25 mm/0.25 «mu»m, Helium, 60. C @ 2. min, 15. K/min, 300. C @ 10. min

Normal alkane RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryHP-5995.Garcia-Estaban, Ansorena, et al., 200450. m/0.32 mm/1.05 «mu»m; Program: 40C(10min) => 5C/min => 200C => 20C/min => 250C(5min)
CapillaryCP-Sil5 CB MS994.Tirillini, Verdelli, et al., 200050. m/0.32 mm/0.4 «mu»m; Program: 0C (3min) => 3C/min => 50C => 5C/min => 220C (30min)
CapillaryRSL-150997.Buchbauer, Nikiforov, et al., 199460. m/0.32 mm/0.25 «mu»m, He; Program: 30c (1.5min) => 20C/min => 55C => 6C/min => 200C(10min)

Normal alkane RI, polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryCP-Wax 52CB943.Povolo, Contarini, et al., 200760. m/0.32 mm/0.5 «mu»m, He, 40. C @ 8. min, 4. K/min, 220. C @ 20. min
CapillaryHP-Wax915.Sanz, Maeztu, et al., 200260. m/0.25 mm/0.5 «mu»m, He, 40. C @ 6. min, 3. K/min; Tend: 190. C
CapillaryHP-Wax915.Sanz, Ansorena, et al., 200160. m/0.25 mm/0.5 «mu»m, He, 40. C @ 6. min, 3. K/min; Tend: 190. C

References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry 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.

Costas, Huu, et al., 1988
Costas, M.; Huu, V.T.; Patterson, D.; Caceres-Alonso, M.; Tardajos, G.; Aicart, E., Liquid structure and second-order mixing functions for l-chloronaphthalene with linear and branched alkanes, J. Chem. Soc., Faraday Trans., 1988, 1 84(5), 1603-1616. [all data]

Perez-Casas, Aicart, et al., 1988
Perez-Casas, S.; Aicart, E.; Trojo, L.M.; Costas, M., Excess heat capacity. Chlorobenzene-2,2,4,4,6,8,8-heptamethylnonane, Int. Data Ser., Sel. Data Mixtures, 1988, (2)A, 123. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

Melaugh, Mansson, et al., 1976
Melaugh, R.A.; Mansson, M.; Rossini, F.D., The energy of isomerization of n-dodecane into 2,2,4,6,6-pentamethylheptane, J. Chem. Thermodyn., 1976, 8, 623-626. [all data]

Dutoit, 1991
Dutoit, J., Gas chromatographic retention behaviour of some solutes on structurally similar polar and non-polar stationary phases, J. Chromatogr., 1991, 555, 1-2, 191-204, https://doi.org/10.1016/S0021-9673(01)87179-X . [all data]

Louis, 1971
Louis, R., Kovats-index-tafeln zur gaschromatographischen analyse von kohlenwasserstoffgemischen, Erdoel Kohle Erdgas Petrochem., 1971, 24, 2, 88-94. [all data]

Elmore, Cooper, et al., 2005
Elmore, J.S.; Cooper, S.L.; Enser, M.; Mottram, D.S.; Sinclair, L.A.; Wilkinson, R.G.; Wood, J.D., Dietary manipulation of fatty acid composition in lamb meat and its effect on the volatile aroma compounds of grilled lamb, Meat Sci., 2005, 69, 2, 233-242, https://doi.org/10.1016/j.meatsci.2004.07.002 . [all data]

Insausti, Goñi, et al., 2005
Insausti, K.; Goñi, V.; Petri, E.; Gorraiz, C.; Beriain, M.J., Effect of weight at slaughter on the volatile compounds of cooked beef from Spanish cattle breeds, Meat Sci., 2005, 70, 1, 83-90, https://doi.org/10.1016/j.meatsci.2004.12.003 . [all data]

Vendeuvre, Bertoncini, et al., 2005
Vendeuvre, C.; Bertoncini, F.; Thiébaut, D.; Martin, M.; Hennion, M.-C., Evluation of a retention model in comprehensive two-dimensional gas chromatography, J. Sep. Sci., 2005, 28, 11, 1129-1136, https://doi.org/10.1002/jssc.200401933 . [all data]

Xu, van Stee, et al., 2003
Xu, X.; van Stee, L.L.P.; Williams, J.; Beens, J.; Adahchour, M.; Vreuls, R.J.J.; Brinkman, U.A.Th.; Lelieveld, J., Comprehensive two-dimensional gas chromatography (GC×GC) measurements of volatile organic compounds in the atmosphere, Atmos. Chem. Phys., 2003, 3, 3, 665-682, https://doi.org/10.5194/acp-3-665-2003 . [all data]

Oruna-Concha, Ames, et al., 2002
Oruna-Concha, M.J.; Ames, J.M.; Bakker, J., Comparison of the volatile components of eight cultivars of potato after microwave baking, Lebensm. Wiss. Technol., 2002, 35, 1, 80-86, https://doi.org/10.1006/fstl.2001.0819 . [all data]

White, Hackett, et al., 1992
White, C.M.; Hackett, J.; Anderson, R.R.; Kail, S.; Spock, P.S., Linear temperature programmed retention indices of gasoline range hydrocarbons and chlorinated hydrocarbons on cross-linked polydimethylsiloxane, J. Hi. Res. Chromatogr., 1992, 15, 2, 105-120, https://doi.org/10.1002/jhrc.1240150211 . [all data]

Haynes and Pitzer, 1985
Haynes, P.C., Jr.; Pitzer, E.W., Disengaging solutes in shale- and petroleum-derived jet fuels by altering GC programmed temperature rates, J. Hi. Res. Chromatogr. Chromatogr. Comm., 1985, 8, 5, 230-242, https://doi.org/10.1002/jhrc.1240080504 . [all data]

Place, Imhof, et al., 2003
Place, R.B.; Imhof, M.; Teuber, M.; Olivier Bosset, J., Distribution of the volatile (flavour) compounds in Raclette cheese produced with different staphylococci in the smear, Mitt. Lebensmittelunters. Hyg., 2003, 94, 192-211. [all data]

Oruna-Concha, Bakker, et al., 2002
Oruna-Concha, M.J.; Bakker, J.; Ames, J.M., Comparison of the volatile components of two cultivars of potato cooked by boiling, conventional baking and microwave baking, J. Sci. Food Agric., 2002, 82, 9, 1080-1087, https://doi.org/10.1002/jsfa.1148 . [all data]

Chung and Cadwallader, 1993
Chung, H.Y.; Cadwallader, K.R., Volatile components in blue crab (Callinectes sapidus) meat and processing by-product, J. Food Sci., 1993, 58, 6, 1203-1207, https://doi.org/10.1111/j.1365-2621.1993.tb06148.x . [all data]

Tanchotikul and Hsieh, 1989
Tanchotikul, U.; Hsieh, T.C.-Y., Volatile Flavor Components in Crayfish Waste, J. Food Sci., 1989, 54, 6, 1515-1520, https://doi.org/10.1111/j.1365-2621.1989.tb05149.x . [all data]

Supelco, 2012
Supelco, CatalogNo. 24160-U, Petrocol DH Columns. Catalog No. 24160-U, 2012, retrieved from http://www.sigmaaldrich.com/etc/medialib/docs/Supelco/Datasheet/1/w97949.Par.0001.File.tmp/w97949.pdf. [all data]

Xu, Han, et al., 2012
Xu, L.-L.; Han, T.; Wu, J.-Z.; Zhang, Q.-Y.; Zhang, H.; Huang, B.-K.; Rahman, K., Comparative research of chemical constituents, antifungal and antitumor properties of ether extracts of Panax ginseng and its endophytic fungus, 2012, retrieved from http://www.thefreelibrary.com/Comparative .... [all data]

Xu, Han, et al., 2009
Xu, L.-L.; Han, T.; Wu, J.-Z.; Zhang, Q.-Y.; Zhang, H.; Huang, B.-K.; Rahman, K., Comparative research of chemical constituents, antifungal and antitumor properties of ether extracts of Panax ginseng and its endophytic fungus, Phytomedicine: Int. J. Phytotherapy Phytopharmacology, 2009, 16, 6-7, 609-616, https://doi.org/10.1016/j.phymed.2009.03.014 . [all data]

Garcia-Estaban, Ansorena, et al., 2004
Garcia-Estaban, M.; Ansorena, D.; Astiasaran, I.; Martin, D.; Ruiz, J., Comparison of simultaneous distillation extraction (SDE) and solid-phase microextraction (SPME) for the analysis of volatile compounds in dry-cured ham, J. Sci. Food Agric., 2004, 84, 11, 1364-1370, https://doi.org/10.1002/jsfa.1826 . [all data]

Tirillini, Verdelli, et al., 2000
Tirillini, B.; Verdelli, G.; Paolocci, F.; Ciccioli, P.; Frattoni, M., The volatile organic compounds from the mycelium of Tuber borchii Vitt., Phytochemistry, 2000, 55, 8, 983-985, https://doi.org/10.1016/S0031-9422(00)00308-3 . [all data]

Buchbauer, Nikiforov, et al., 1994
Buchbauer, G.; Nikiforov, A.; Remberg, B., Headspace constituents of opium, Planta Medica, 1994, 60, 2, 181-183, https://doi.org/10.1055/s-2006-959447 . [all data]

Povolo, Contarini, et al., 2007
Povolo, M.; Contarini, G.; Mele, M.; Secchiari, P., Study on the influence of pasture on volatile fraction of Ewes' dairy products by solid-phase microextraction and gas chromatography-mass spectrometry, J. Dairy Sci., 2007, 90, 2, 556-569, https://doi.org/10.3168/jds.S0022-0302(07)71539-4 . [all data]

Sanz, Maeztu, et al., 2002
Sanz, C.; Maeztu, L.; Zapelena, M.J.; Bello, J.; Cid, C., Profiles of volatile compounds and sensory analysis of three blends of coffee: influence of different proportions of Arabica and Robusta and influence of roasting coffee with sugar, J. Sci. Food Agric., 2002, 82, 8, 840-847, https://doi.org/10.1002/jsfa.1110 . [all data]

Sanz, Ansorena, et al., 2001
Sanz, C.; Ansorena, D.; Bello, J.; Cid, C., Optimizing headspace temperature and time sampling for identification of volatile compounds in ground roasted Arabica coffee, J. Agric. Food Chem., 2001, 49, 3, 1364-1369, https://doi.org/10.1021/jf001100r . [all data]


Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References