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Heptane, 4-ethyl-

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Kovats' RI, non-polar column, isothermal

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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

Column type CapillaryCapillaryCapillaryCapillaryCapillary
Active phase SqualaneSqualaneSqualaneSqualaneSqualane
Column length (m)    50.50.
Carrier gas    HeHe
Substrate      
Column diameter (mm)    0.220.22
Phase thickness (mum)      
Temperature (C) 100.25.25.50.70.
I 858.856.866.857.4858.5
ReferenceHeinzen, Soares, et al., 1999Hilal, Carreira, et al., 1994Hilal, Carreira, et al., 1994Lunskii and Paizanskaya, 1988Lunskii and Paizanskaya, 1988
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI MSDC-RI
Column type CapillaryCapillaryCapillaryCapillaryCapillary
Active phase DB-1DB-1OV-1SqualaneSqualane
Column length (m) 60.60.150. 120.
Carrier gas   He He
Substrate      
Column diameter (mm) 0.2640.2590.50 0.25
Phase thickness (mum)  1.   
Temperature (C) 60.60.60.60.100.
I 861.8861.9857.858.2859.
ReferenceLubeck and Sutton, 1983Lubeck and Sutton, 1983Nijs and Jacobs, 1981Chretien and Dubois, 1976Lulova, Leont'eva, et al., 1976
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI MSDC-RI
Column type CapillaryCapillaryCapillaryCapillaryCapillary
Active phase SqualaneVacuum Grease Oil (VM-4)Apiezon LVacuum Grease Oil (VM-4)Vacuum Grease Oil (VM-4)
Column length (m) 120.150.   
Carrier gas HeN2   
Substrate      
Column diameter (mm) 0.250.25   
Phase thickness (mum)      
Temperature (C) 100.95.100.35.45.
I 859.6857.6861.856.856.
ReferenceLulova, Leont'eva, et al., 1976Sultanov and Arustamova, 1975Rappoport and Gäumann, 1973Sidorov, Petrova, et al., 1972Sidorov, Petrova, et al., 1972
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI MSDC-RI
Column type CapillaryCapillaryCapillaryPackedCapillary
Active phase Vacuum Grease Oil (VM-4)Vacuum Grease Oil (VM-4)Vacuum Grease Oil (VM-4)SqualaneSqualane
Column length (m)    3.91.4
Carrier gas    N2N2
Substrate    Chromosorb W 
Column diameter (mm)     0.25
Phase thickness (mum)      
Temperature (C) 50.58.68.50.60.
I 857.857.858.857.5858.
ReferenceSidorov, Petrova, et al., 1972Sidorov, Petrova, et al., 1972Sidorov, Petrova, et al., 1972Takács, Szita, et al., 1971Matukuma, 1969
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI MSDC-RI
Column type CapillaryCapillaryCapillaryCapillaryPacked
Active phase SqualaneSqualaneSqualaneSqualaneSE-30
Column length (m) 100.100.100.100.7.9
Carrier gas ArH2H2H2 
Substrate     Diatoport S
Column diameter (mm)  0.250.250.25 
Phase thickness (mum)      
Temperature (C) 80.30.50.70.70.
I 861.857.858.858.863.
ReferenceSchomburg, 1967Tourres, 1967Tourres, 1967Tourres, 1967Widmer, 1967
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI MSDC-RI

References

Go To: Top, Kovats' RI, non-polar column, isothermal, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Heinzen, Soares, et al., 1999
Heinzen, V.E.F.; Soares, M.F.; Yunes, R.A., Semi-empirical topological method for the prediction of the chromatographic retention of cis- and trans-alkene isomers and alkanes, J. Chromatogr. A, 1999, 849, 2, 495-506, https://doi.org/10.1016/S0021-9673(99)00530-0 . [all data]

Hilal, Carreira, et al., 1994
Hilal, S.H.; Carreira, L.A.; Karickhoff, S.W.; Melton, C.M., Estimation of Gas-Liquid Chromatographic Retention Times from Molecular Structure, J. Chromatogr. A, 1994, 662, 2, 269-280, https://doi.org/10.1016/0021-9673(94)80515-6 . [all data]

Lunskii and Paizanskaya, 1988
Lunskii, M.Kh.; Paizanskaya, I.L., Identification of hydrocarbons C1-C9 of petrol fractions of oils and condensates in the use of capillary columns with dinonylphthalate, Zh. Anal. Khim., 1988, 43, 127-135. [all data]

Lubeck and Sutton, 1983
Lubeck, A.J.; Sutton, DL., Kovats retention indices of selected hydrocarbons through C10 on bonded phase fused silica capillaries, J. Hi. Res. Chromatogr. Chromatogr. Comm., 1983, 6, 6, 328-332, https://doi.org/10.1002/jhrc.1240060612 . [all data]

Nijs and Jacobs, 1981
Nijs, H.H.; Jacobs, P.A., On-Line Single Run Analysis of Effluents from a Fischer-Tropsch Reactor, J. Chromatogr. Sci., 1981, 19, 1, 40-45, https://doi.org/10.1093/chromsci/19.1.40 . [all data]

Chretien and Dubois, 1976
Chretien, J.R.; Dubois, J.-E., New Perspectives in the Prediction of Kovats Indices, J. Chromatogr., 1976, 126, 171-189, https://doi.org/10.1016/S0021-9673(01)84071-1 . [all data]

Lulova, Leont'eva, et al., 1976
Lulova, N.I.; Leont'eva, S.A.; Timofeeva, A.N., Gas-chromatographic method of determination of individual hydrocarbons in catalytic cracking gasolines in Proceedings of All-Union Research Institute on Oil Processes. Vol.18, All-Union Research Institute on Oil Processes, Moscow, 1976, 30-53. [all data]

Sultanov and Arustamova, 1975
Sultanov, N.T.; Arustamova, L.G., Determination of the boiling points of C10 isoalkanes in an n-decane isomerizate from gas chromatographic retention indices, J. Chromatogr., 1975, 115, 2, 553-558, https://doi.org/10.1016/S0021-9673(01)98959-9 . [all data]

Rappoport and Gäumann, 1973
Rappoport, S.; Gäumann, T., 114. L'indice de rétention des alcanes isomères en chromatographie en phase gazeuse, Helv. Chim. Acta, 1973, 56, 3, 1145-1158, https://doi.org/10.1002/hlca.19730560338 . [all data]

Sidorov, Petrova, et al., 1972
Sidorov, R.I.; Petrova, V.I.; Ivanova, M.P., Qualitative analysis of wide-boiling fraction C5-C10 with capillary chromatography in Processes in chromatographic columns. Vol.17, 1972, 14-25. [all data]

Takács, Szita, et al., 1971
Takács, J.; Szita, C.; Tarján, G., Contribution to the theory of the retention index system. III. Retention index and molecular structure. Calculation of retention indices of paraffin hydrocarbons on the basis of their molecular structure, J. Chromatogr., 1971, 56, 1-12, https://doi.org/10.1016/S0021-9673(00)97771-9 . [all data]

Matukuma, 1969
Matukuma, A., Retention indices of alkanes through C10 and alkenes through C8 and relation between boiling points and retention data, Gas Chromatogr., Int. Symp. Anal. Instrum. Div Instrum Soc. Amer., 1969, 7, 55-75. [all data]

Schomburg, 1967
Schomburg, G., Struktur und Retentionsverhalten von Offenkettigen und Cyclischen Kohlenwasserstoffen und Deren Einfacher Substitutionsprodukte, Anal. Chim. Acta., 1967, 38, 45-64, https://doi.org/10.1016/S0003-2670(01)80560-2 . [all data]

Tourres, 1967
Tourres, D.A., Structure moléculaire et rétention en chromatographie en phase gazeuse. Influence de la température sur l'indice de rétention d'alcanes isomères, J. Chromatogr., 1967, 30, 357-377, https://doi.org/10.1016/S0021-9673(00)84168-0 . [all data]

Widmer, 1967
Widmer, H., Gas chromatographic identification of hydrocarbons using retention indices, J. Gas Chromatogr., 1967, 5, 10, 506-510, https://doi.org/10.1093/chromsci/5.10.506 . [all data]


Notes

Go To: Top, Kovats' RI, non-polar column, isothermal, References