Hexane, 3,4-dimethyl-
- Formula: C8H18
- Molecular weight: 114.2285
- IUPAC Standard InChIKey: RNTWWGNZUXGTAX-UHFFFAOYSA-N
- CAS Registry Number: 583-48-2
- 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. - Stereoisomers:
- Other names: 3,4-Dimethylhexane; C2H5CH(CH3)CH(CH3)C2H5
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Gas phase thermochemistry data
Go To: Top, 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -50.91 ± 0.37 | kcal/mol | Ccb | Prosen and Rossini, 1945 | ALS |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
27.911 | 200. | Scott D.W., 1974 | Recommended values were obtained from the consistent correlation scheme for alkanes [ Scott D.W., 1974, 2, Scott D.W., 1974]. This approach gives a good agreement with experimental data available for alkanes. However, large uncertainties could be expected at high temperatures.; GT |
39.890 | 273.15 | ||
43.58 ± 0.33 | 298.15 | ||
43.850 | 300. | ||
57.421 | 400. | ||
69.020 | 500. | ||
78.800 | 600. | ||
87.101 | 700. | ||
94.099 | 800. | ||
100.20 | 900. | ||
105.40 | 1000. | ||
110.00 | 1100. | ||
114.00 | 1200. | ||
118.00 | 1300. | ||
121.00 | 1400. | ||
124.00 | 1500. |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
58.599 | 406.7 | Barrow G.M., 1951 | GT |
65.100 | 462.3 | ||
71.800 | 522.6 |
Mass spectrum (electron ionization)
Go To: Top, Gas phase thermochemistry data, 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
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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 | 1744 |
Gas Chromatography
Go To: Top, Gas phase thermochemistry data, 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
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | OV-101 | 60. | 769.6 | Chen, Liang, et al., 2001 | He; Column length: 50. m; Column diameter: 0.25 mm |
Packed | C78, Branched paraffin | 130. | 780.3 | Dallos, Sisak, et al., 2000 | He; Column length: 3.3 m |
Capillary | Squalane | 100. | 772. | Heinzen, Soares, et al., 1999 | |
Capillary | OV-101 | 0. | 765. | Skrbic, 1997 | |
Packed | Squalane | 78.5 | 774.7 | Zhang and Lu, 1996 | |
Capillary | Squalane | 25. | 768. | Hilal, Carreira, et al., 1994 | |
Capillary | DB-1 | 60. | 770.5 | Krupcik, Skacani, et al., 1994 | H2; Phase thickness: 0.25 μm |
Capillary | PONA | 60. | 770.5 | Krupcik, Skacani, et al., 1994 | H2; Phase thickness: 0.5 μm |
Capillary | PONA | 60. | 770.6 | Krupcik, Skacani, et al., 1994 | H2; Phase thickness: 0.5 μm |
Capillary | DB-1 | 60. | 770.5 | Krupcik, Skacani, et al., 1994 | H2; Phase thickness: 1. μm |
Capillary | OV-101 | 60. | 770.6 | Krupcik, Skacani, et al., 1994 | H2; Phase thickness: 0.2 μm |
Packed | C78, Branched paraffin | 130. | 780.1 | Reddy, Dutoit, et al., 1992 | Chromosorb G HP; Column length: 3.3 m |
Packed | Apolane | 130. | 780. | Dutoit, 1991 | Column length: 3.7 m |
Capillary | OV-1 | 60. | 771. | Engewald, Maurer, et al., 1989 | |
Capillary | OV-1 | 60. | 771. | Engewald, Maurer, et al., 1989 | |
Capillary | OV-1 | 45. | 769. | Guan, Kiraly, et al., 1989 | 25. m/0.31 mm/0.52 μm, He |
Capillary | OV-1 | 65. | 771.1 | Guan, Kiraly, et al., 1989 | 25. m/0.31 mm/0.52 μm, He |
Capillary | Squalane | 50. | 770.6 | Guan, Kiraly, et al., 1989 | 50. m/0.22 mm/0.21 μm, He |
Capillary | Squalane | 70. | 772.6 | Guan, Kiraly, et al., 1989 | 50. m/0.22 mm/0.21 μm, He |
Capillary | OV-101 | 40. | 767. | Laub and Purnell, 1988 | |
Capillary | OV-101 | 60. | 769. | Laub and Purnell, 1988 | |
Capillary | OV-101 | 80. | 771. | Laub and Purnell, 1988 | |
Capillary | Squalane | 50. | 770.1 | Lunskii and Paizanskaya, 1988 | He; Column length: 50. m; Column diameter: 0.22 mm |
Capillary | Squalane | 70. | 772.9 | Lunskii and Paizanskaya, 1988 | He; Column length: 50. m; Column diameter: 0.22 mm |
Capillary | OV-101 | 40. | 768.4 | Boneva and Dimov, 1986 | 100. m/0.27 mm/0.9 μm |
Capillary | OV-101 | 50. | 769.3 | Boneva and Dimov, 1986 | 100. m/0.27 mm/0.9 μm |
Capillary | OV-101 | 60. | 770.2 | Boneva and Dimov, 1986 | 100. m/0.27 mm/0.9 μm |
Capillary | OV-101 | 70. | 771.2 | Boneva and Dimov, 1986 | 100. m/0.27 mm/0.9 μm |
Capillary | OV-101 | 30. | 766. | Chien, Furio, et al., 1983 | |
Capillary | OV-101 | 40. | 767. | Chien, Furio, et al., 1983 | |
Capillary | OV-101 | 50. | 768. | Chien, Furio, et al., 1983 | |
Capillary | OV-101 | 60. | 769. | Chien, Furio, et al., 1983 | |
Capillary | OV-101 | 70. | 770. | Chien, Furio, et al., 1983 | |
Capillary | OV-101 | 80. | 771. | Chien, Furio, et al., 1983 | |
Capillary | DB-1 | 60. | 770.5 | Lubeck and Sutton, 1983 | Column length: 60. m; Column diameter: 0.264 mm |
Capillary | DB-1 | 60. | 770.8 | Lubeck and Sutton, 1983 | 60. m/0.259 mm/1. μm |
Capillary | DB-1 | 60. | 770.5 | Lubeck and Sutton, 1983 | Column length: 60. m; Column diameter: 0.264 mm |
Capillary | DB-1 | 60. | 770.8 | Lubeck and Sutton, 1983 | 60. m/0.259 mm/1. μm |
Capillary | OV-101 | 50. | 769. | Johansen and Ettre, 1982 | 100. m/0.27 mm/0.20 μm |
Capillary | OV-101 | 50. | 769. | Johansen and Ettre, 1982 | 55. m/0.27 mm/0.9 μm |
Capillary | SF-96 | 50. | 769. | Johansen and Ettre, 1982 | 91.4 m/0.31 mm/0.20 μm |
Packed | Triacontane | 80. | 773. | Castello and D'Amato, 1979 | He, Chromosorb W AW (60-80 mesh); Column length: 3. m |
Packed | Squalane | 80. | 774. | Castello and D'Amato, 1979 | He, Chromosorb W AW (60-80 mesh); Column length: 3. m |
Capillary | Squalane | 60. | 772. | Chretien and Dubois, 1976 | |
Capillary | Squalane | 100. | 770.9 | Lulova, Leont'eva, et al., 1976 | He; Column length: 120. m; Column diameter: 0.25 mm |
Capillary | Squalane | 100. | 766. | Lulova, Leont'eva, et al., 1976 | He; Column length: 120. m; Column diameter: 0.25 mm |
Packed | Apolane | 70. | 774.0 | Riedo, Fritz, et al., 1976 | He, Chromosorb; Column length: 2.4 m |
Capillary | Squalane | 50. | 771. | Rijks and Cramers, 1974 | N2; Column length: 100. m; Column diameter: 0.25 mm |
Capillary | Squalane | 70. | 773. | Rijks and Cramers, 1974 | N2; Column length: 100. m; Column diameter: 0.25 mm |
Capillary | Vacuum Grease Oil (VM-4) | 35. | 768. | Sidorov, Petrova, et al., 1972 | |
Capillary | Vacuum Grease Oil (VM-4) | 45. | 769. | Sidorov, Petrova, et al., 1972 | |
Capillary | Vacuum Grease Oil (VM-4) | 50. | 770. | Sidorov, Petrova, et al., 1972 | |
Capillary | Vacuum Grease Oil (VM-4) | 58. | 770. | Sidorov, Petrova, et al., 1972 | |
Capillary | Vacuum Grease Oil (VM-4) | 68. | 771. | Sidorov, Petrova, et al., 1972 | |
Capillary | Squalane | 70. | 770.8 | Dimov and Schopov, 1971 | Column length: 100. m; Column diameter: 0.25 mm |
Packed | SE-30 | 80. | 773. | Mitra and Saha, 1970 | N2 |
Packed | Squalane | 25. | 768. | Mitra and Saha, 1970 | N2 |
Packed | Squalane | 80. | 774. | Mitra and Saha, 1970 | N2 |
Capillary | Squalane | 40. | 770. | Matukuma, 1969 | N2; Column length: 91.4 m; Column diameter: 0.25 mm |
Capillary | Squalane | 40. | 770. | Matukuma, 1969 | N2; Column length: 91.4 m; Column diameter: 0.25 mm |
Packed | Squalane | 27. | 768. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 49. | 771. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 67. | 772. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 86. | 774. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Packed | Squalane | 30. | 769. | Tourres, 1967 | H2; Column length: 10. m |
Packed | Squalane | 50. | 771. | Tourres, 1967 | H2; Column length: 10. m |
Capillary | Squalane | 30. | 769. | Tourres, 1967, 2 | H2; Column length: 100. m; Column diameter: 0.25 mm |
Capillary | Squalane | 50. | 771. | Tourres, 1967, 2 | H2; Column length: 100. m; Column diameter: 0.25 mm |
Capillary | Squalane | 70. | 773. | Tourres, 1967, 2 | H2; Column length: 100. m; Column diameter: 0.25 mm |
Packed | Squalane | 40. | 770. | Evans, 1966 | Untreated celite; Column length: 1.8 m |
Packed | Squalane | 55. | 771. | Evans, 1966 | Untreated celite; Column length: 1.8 m |
Packed | Squalane | 70. | 773. | Evans, 1966 | Untreated celite; Column length: 1.8 m |
Kovats' RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-101 | 764. | Hayes and Pitzer, 1982 | 110. m/0.25 mm/0.20 μm, He, 1. K/min; Tstart: 35. C; Tend: 200. C |
Capillary | Apiezon L | 772. | Louis, 1971 | N2, 1. K/min; Column length: 50. m; Column diameter: 0.25 mm; Tstart: 60. C |
Kovats' RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Petrocol DH-100 | 767.2 | Haagen-Smit Laboratory, 1997 | He; Column length: 100. m; Column diameter: 0.2 mm; Program: 5C(10min) => 5C/min => 50C(48min) => 1.5C/min => 195C(91min) |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Petrocol DH | 770.2 | Censullo, Jones, et al., 2003 | 50. m/0.25 mm/0.5 μm, He, 35. C @ 10. min, 3. K/min, 200. C @ 10. min |
Capillary | SPB-1 | 764.08 | LECO Corporation, 2003 | 30. m/0.25 mm/0.25 μm, 40. C @ 2. min, 10. K/min, 250. C @ 2. min |
Capillary | OV-101 | 767.6 | Yin, Liu, et al., 2001 | N2, 1. K/min; Column length: 80. m; Column diameter: 0.22 mm; Tstart: 30. C; Tend: 130. C |
Capillary | Petrocol DH | 765.50 | Subramaniam, Bochniak, et al., 1994 | 100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C |
Capillary | Petrocol DH | 768.08 | Subramaniam, Bochniak, et al., 1994 | 100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C |
Capillary | Petrocol DH | 765. | White, Hackett, et al., 1992 | 100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C |
Capillary | Ultra-1 | 766.04 | Haynes and Pitzer, 1985 | 50. m/0.22 mm/0.33 μm, He, 1. K/min; Tstart: -30. C; Tend: 240. C |
Capillary | Ultra-1 | 767.33 | Haynes and Pitzer, 1985 | 50. m/0.22 mm/0.33 μm, He, 2. K/min; Tstart: -30. C; Tend: 240. C |
Capillary | Ultra-1 | 768.12 | Haynes and Pitzer, 1985 | 50. m/0.22 mm/0.33 μm, He, 3. K/min; Tstart: -30. C; Tend: 240. C |
Capillary | Ultra-2 | 766.33 | Haynes and Pitzer, 1985 | 50. m/0.22 mm/0.33 μm, He, 1. K/min; Tstart: -30. C; Tend: 240. C |
Capillary | Ultra-2 | 767.70 | Haynes and Pitzer, 1985 | 50. m/0.22 mm/0.33 μm, He, 2. K/min; Tstart: -30. C; Tend: 240. C |
Capillary | Ultra-2 | 768.60 | Haynes and Pitzer, 1985 | 50. m/0.22 mm/0.33 μm, He, 3. K/min; Tstart: -30. C; Tend: 240. C |
Capillary | OV-101 | 764. | Hayes and Pitzer, 1981 | 108. m/0.25 mm/0.2 μm, 1. K/min; Tstart: 35. C; Tend: 200. C |
Van Den Dool and Kratz RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-101 | 768. | Wu and Lu, 1984 | Program: not specified |
Normal alkane RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | OV-101 | 40. | 768. | Li and Deng, 1998 | N2; Column length: 51. m; Column diameter: 0.25 mm |
Capillary | Methyl Silicone | 50. | 771. | N/A | N2; Column length: 74.6 m; Column diameter: 0.28 mm |
Capillary | OV-101 | 50. | 769. | Wu and Lu, 1984, 2 | |
Capillary | OV-101 | 70. | 771. | Wu and Lu, 1984, 2 | |
Capillary | Squalane | 100. | 776. | Dimov N., 1976 | |
Capillary | Squalane | 70. | 773. | Dimov N., 1976 | |
Capillary | Squalane | 86. | 765. | Vigdergauz and Martynov, 1971 | He; Column length: 150. m; Column diameter: 0.35 mm |
Capillary | Squalane | 70. | 772. | Schomburg, 1966 |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Polydimethyl siloxane: CP-Sil 5 CB | 772. | Bramston-Cook, 2013 | 60. m/0.25 mm/1.0 μm, Helium, 45. C @ 1.45 min, 3.6 K/min, 210. C @ 2.72 min |
Capillary | Petrocol DH | 768. | Supelco, 2012 | 100. m/0.25 mm/0.50 μm, Helium, 20. C @ 15. min, 15. K/min, 220. C @ 30. min |
Capillary | PONA | 770. | Zhang, Ding, et al., 2009 | 50. m/0.20 mm/0.50 μm, Nitrogen, 35. C @ 15. min, 2. K/min, 200. C @ 10. min |
Capillary | OV-101 | 767. | Orav, Kailas, et al., 1999 | 50. m/0.20 mm/0.50 μm, Helium, 30. C @ 6. min, 1. K/min; Tend: 100. C |
Capillary | SE-54 | 772. | Guan, Li, et al., 1995 | 60. C @ 2. min, 4. K/min; Column length: 50. m; Column diameter: 0.32 mm; Tend: 200. C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Methyl Silicone | 774. | Chen and Feng, 2007 | Program: not specified |
Capillary | Methyl Silicone | 771. | Feng and Mu, 2007 | Program: not specified |
Capillary | OV-101 | 772. | Du and Liang, 2003 | Program: not specified |
Capillary | Polydimethyl siloxane | 772. | Junkes, Castanho, et al., 2003 | Program: not specified |
Capillary | Polydimethyl siloxanes | 768. | Yin, Guo, et al., 2001 | Program: not specified |
Capillary | OV-101 | 765. | Skrbic and Cvejanov, 1993 | Program: not specified |
Capillary | SE-52 | 770. | van Langenhove and Schamp, 1986 | Column length: 100. m; Column diameter: 0.50 mm; Program: not specified |
Capillary | Squalane | 766. | Petrov, 1984 | Program: not specified |
Capillary | OV-1, SE-30, Methyl silicone, SP-2100, OV-101, DB-1, etc. | 770. | Waggott and Davies, 1984 | Hydrogen; Column length: 50. m; Column diameter: 0.32 mm; Program: not specified |
References
Go To: Top, Gas phase thermochemistry data, 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.
Prosen and Rossini, 1945
Prosen, E.J.; Rossini, F.D.,
Heats of combustion and formation of the paraffin hydrocarbons at 25° C,
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Scott D.W., 1974
Scott D.W.,
Chemical Thermodynamic Properties of Hydrocarbons and Related Substances. Properties of the Alkane Hydrocarbons, C1 through C10 in the Ideal Gas State from 0 to 1500 K. U.S. Bureau of Mines, Bulletin 666, 1974. [all data]
Scott D.W., 1974, 2
Scott D.W.,
Correlation of the chemical thermodynamic properties of alkane hydrocarbons,
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Barrow G.M., 1951
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Experimental vapor heat capacities and heats of vaporization of seven octanes,
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Chen, Liang, et al., 2001
Chen, J.P.; Liang, X.M.; Zhang, Q.; Zhang, L.F.,
Prediction of GC retention values under various column temperature conditions from temperature programmed data,
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Dallos, Sisak, et al., 2000
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Pair-wise interactions by gas chromatography VII. Interaction free enthalpies of solutes with secondary alcohol groups,
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Semi-empirical topological method for the prediction of the chromatographic retention of cis- and trans-alkene isomers and alkanes,
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Skrbic, 1997
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Unified retention concept -- statistical treatment of Kováts retention index,
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Unified equation between Kováts indices on different stationary phases for select types of compounds,
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Estimation of Gas-Liquid Chromatographic Retention Times from Molecular Structure,
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Krupcik, J.; Skacani, I.; Benicka, E.; Sandra, P.,
Dependence of gas chromatographic retention data of hydrocarbons on the film thickness of the polydimethylsiloxane stationary phase,
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Reddy, K.S.; Dutoit, J.-Cl.; Kovats, E. sz.,
Pair-wise interactions by gas chromatography. I. Interaction free enthalpies of solutes with non-associated primary alcohol groups,
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Dutoit, J.,
Gas chromatographic retention behaviour of some solutes on structurally similar polar and non-polar stationary phases,
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Engewald, Maurer, et al., 1989
Engewald, W.; Maurer, T.; Schiefke, A.,
Investigation of isomeric hydrocarbons by gas-solid chromatography on graphitized thermal carbon black,
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Guan, Kiraly, et al., 1989
Guan, Y.; Kiraly, J.; Rijks, J.A.,
Interactive retention index database for compound identification in temperature-programmed capillary gas chromatography,
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Specific retention volumes, retention indices, and family-plot regressions of aliphatic, alicyclic, and aromatic hydrocarbon solutes with OV-101 poly (dimethylsiloxane) stationary phase,
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Kovats retention indices of selected hydrocarbons through C10 on bonded phase fused silica capillaries,
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Notes
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