Butane, 2-methyl-
- Formula: C5H12
- Molecular weight: 72.1488
- IUPAC Standard InChIKey: QWTDNUCVQCZILF-UHFFFAOYSA-N
- CAS Registry Number: 78-78-4
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: iso-Pentane; 1,1,2-Trimethylethane; 2-Methylbutane; iso-C5H12; Ethyldimethylmethane; Isoamylhydride; Exxsol isopentane S; 1,1-Dimethylpropane; Methylbutane; NSC 119476
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Normal alkane RI, non-polar column, custom temperature program
Go To: Top, 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
Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|---|
Active phase | Nonpolar | Methyl Silicone | Methyl Silicone | Methyl Silicone | OV-101 |
Column length (m) | 60. | ||||
Carrier gas | Helium | ||||
Substrate | |||||
Column diameter (mm) | 0.32 | ||||
Phase thickness (μm) | 1.0 | ||||
Program | not specified | not specified | not specified | -50 0C (2 min) 8 0C/min -> 200 0C (7.75 min) 25 0C -> 225 0C (8 min) | not specified |
I | 475. | 476. | 475. | 475. | 475. |
Reference | Staples and Zeiger, 2008 | Chen and Feng, 2007 | Feng and Mu, 2007 | Blunden, Aneja, et al., 2005 | Du and Liang, 2003 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|---|
Active phase | Polydimethyl siloxane | PONA | Polydimethyl siloxanes | Methyl Silicone | Methyl Silicone |
Column length (m) | 100. | ||||
Carrier gas | |||||
Substrate | |||||
Column diameter (mm) | |||||
Phase thickness (μm) | 0.50 | ||||
Program | not specified | not specified | not specified | not specified | not specified |
I | 475. | 477. | 466. | 472. | 474. |
Reference | Junkes, Castanho, et al., 2003 | Perkin Elmer Instruments, 2002 | Yin, Guo, et al., 2001 | Spieksma, 1999 | Xu, Chu, et al., 1995 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Packed | Packed | Packed | Packed |
---|---|---|---|---|---|
Active phase | SE-52 | SE-30 | Squalane | SE-30 | Squalane |
Column length (m) | 100. | 6.1 | 3.0 | 6.1 | 3.0 |
Carrier gas | N2 | N2 | |||
Substrate | Chromosorb W | Embacel | Chrom W | Embacel | |
Column diameter (mm) | 0.50 | ||||
Phase thickness (μm) | |||||
Program | not specified | 50C910min) => 20C/min => 90(6min) => 10C/min => 150C(hold) | 25C(5min) => 2C/min => 35 => 4C/min => 95C(hold) | 50C(10min) => 20C/min(2min) => 90C(6min) => 10C/min(6min) => (hold at 150C) | 25C(5min) => 2C/min(5min) => 4C/min(15min) => (hold at 95C) |
I | 467. | 476. | 476. | 476. | 476. |
Reference | van Langenhove and Schamp, 1986 | Robinson and Odell, 1971 | Robinson and Odell, 1971 | Robinson and Odell, 1971, 2 | Robinson and Odell, 1971, 2 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
References
Go To: Top, Normal alkane RI, non-polar column, custom temperature program, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Staples and Zeiger, 2008
Staples, E.; Zeiger, K.,
On-Site Measurements of VOCs and Odors from Metal Casting Operations Using an Ultra-Fast Gas Chromatograph, 2008, retrieved from http://www.estcal.com/TechPapers/Industrial/FoundryOdors.doc. [all data]
Chen and Feng, 2007
Chen, Y.; Feng, C.,
QSPR study on gas chromatography retention index of some organic pollutants,
Comput. Appl. Chem. (China), 2007, 24, 10, 1404-1408. [all data]
Feng and Mu, 2007
Feng, H.; Mu, L.-L.,
Quantitative structure-retention relationships for alkane and its derivatives based on electrotopological state index and molecular shape index,
Chem. Ind. Engineering (Chinese), 2007, 24, 2, 161-168. [all data]
Blunden, Aneja, et al., 2005
Blunden, J.; Aneja, V.P.; Lonneman, W.A.,
Characterization of non-methane volatile organic compounds at swine facilities in eastern North Carolina,
Atm. Environ., 2005, 39, 36, 6707-6718, https://doi.org/10.1016/j.atmosenv.2005.03.053
. [all data]
Du and Liang, 2003
Du, Y.; Liang, Y.,
Data mining for seeking accurate quantitative relationship between molecular structure and GC retention indices of alkanes by projection pursuit,
Comput. Biol. Chem., 2003, 27, 3, 339-353, https://doi.org/10.1016/S1476-9271(02)00081-6
. [all data]
Junkes, Castanho, et al., 2003
Junkes, B.S.; Castanho, R.D.M.; Amboni, C.; Yunes, R.A.; Heinzen, V.E.F.,
Semiempirical Topological Index: A Novel Molecular Descriptor for Quantitative Structure-Retention Relationship Studies,
Internet Electronic Journal of Molecular Design, 2003, 2, 1, 33-49. [all data]
Perkin Elmer Instruments, 2002
Perkin Elmer Instruments,
Detailed hydrocarbon analysis (DHAX) Model 4015, 2002, retrieved from http://www.perkinelmer.com/instruments. [all data]
Yin, Guo, et al., 2001
Yin, C.; Guo, W.; Lin, T.; Liu, S.; Fu, R.; Pan, Z.; Wang, L.,
Application of wavelet neural network to the prediction of gas chromatographic retention indices of alkanes,
J. Chinese Chem. Soc., 2001, 48, 739-749. [all data]
Spieksma, 1999
Spieksma, W.,
Determination of vapor liquid equilibrium from the Kovats retention index on dimethylsilicone using the Wilson mixing tool,
J. Hi. Res. Chromatogr., 1999, 22, 10, 565-588, https://doi.org/10.1002/(SICI)1521-4168(19991001)22:10<565::AID-JHRC565>3.0.CO;2-2
. [all data]
Xu, Chu, et al., 1995
Xu, X.; Chu, S.; Song, N.,
Application of chromatographic studies of air pollution in China,
J. Chromatogr. A, 1995, 710, 1, 21-37, https://doi.org/10.1016/0021-9673(95)00173-K
. [all data]
van Langenhove and Schamp, 1986
van Langenhove, H.; Schamp, N.,
Identification of Volatiles in the Head Space of Acid-Treated Phosphate Rock by Gas Chromatography-Mass Spectromety,
J. Chromatogr., 1986, 351, 65-75, https://doi.org/10.1016/S0021-9673(01)83473-7
. [all data]
Robinson and Odell, 1971
Robinson, P.G.; Odell, A.L.,
A system of standard retention indices and its uses. The characterisation of stationary phases and the prediction of retention indices,
J. Chromatogr., 1971, 57, 1-10, https://doi.org/10.1016/0021-9673(71)80001-8
. [all data]
Robinson and Odell, 1971, 2
Robinson, P.G.; Odell, A.L.,
Comparison of isothermal and non-linear temperature programmed gas chromatography. The temperature dependence of the retention indices of a number of hydrocarbons on squalane and SE-30,
J. Chromatogr., 1971, 57, 11-17, https://doi.org/10.1016/0021-9673(71)80002-X
. [all data]
Notes
Go To: Top, Normal alkane RI, non-polar column, custom temperature program, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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