Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

Cyclopentane, 1-ethyl-2-methyl-, cis-

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Deltafliquid-190.8 ± 1.0kJ/molCcrGood, 1971 
Quantity Value Units Method Reference Comment
Deltacliquid-5243.89 ± 0.92kJ/molCcrGood, 1971Corresponding «DELTA»fliquid = -190.8 kJ/mol (simple calculation by NIST; no Washburn corrections)

Phase change data

Go To: Top, Condensed phase thermochemistry 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 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

Quantity Value Units Method Reference Comment
Tboil401.1 ± 0.1KAVGN/AAverage of 6 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus190. ± 100.KAVGN/AAverage of 8 values; Individual data points
Quantity Value Units Method Reference Comment
Deltavap40.2kJ/molN/AReid, 1972AC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
42.5253.AStephenson and Malanowski, 1987Based on data from 238. - 304. K.; AC
39.3318.AStephenson and Malanowski, 1987Based on data from 303. - 403. K.; AC
41.6273.IPOsborn and Douslin, 1974Based on data from 238. - 288. K.; AC
38.3337.N/AForziati, Norris, et al., 1949Based on data from 322. - 402. K.; AC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) A B C Reference Comment
238. - 288.4.79611760.951-27.21Osborn and Douslin, 1974Coefficents calculated by NIST from author's data.
322.00 - 402.174.042241395.706-55.428Forziati, Norris, et al., 1949, 2Coefficents calculated by NIST from author's data.

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:


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

Gas Phase Spectrum

Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.

IR spectrum
For Zoom
1.) Enter the desired X axis range (e.g., 100, 200)
2.) Check here for automatic Y scaling
3.) Press here to zoom

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

Additional Data

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

View spectrum image in SVG format.

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 NIST Mass Spectrometry Data Center
State gas
Instrument HP-GC/MS/IRD

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


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

Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.

Mass spectrum
For Zoom
1.) Enter the desired X axis range (e.g., 100, 200)
2.) Check here for automatic Y scaling
3.) Press here to zoom

Additional Data

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

View spectrum image in SVG format.

Download spectrum in JCAMP-DX format.

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 1613

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

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

Kovats' RI, non-polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
CapillarySqualane50.820.1Lunskii and Paizanskaya, 1988He; Column length: 50. m; Column diameter: 0.22 mm
CapillarySqualane70.825.3Lunskii and Paizanskaya, 1988He; Column length: 50. m; Column diameter: 0.22 mm
CapillarySqualane50.820.7Krupcik, Cellar, et al., 1986Column length: 180. m; Column diameter: 0.25 mm
CapillaryDB-160.820.3Lubeck and Sutton, 1983Column length: 60. m; Column diameter: 0.264 mm
CapillaryDB-160.820.8Lubeck and Sutton, 198360. m/0.259 mm/1. «mu»m
CapillarySqualane70.825.3Nabivach and Kirilenko, 1979N2; Column length: 50. m
CapillarySqualane70.825.4Nabivach and Kirilenko, 1979N2; Column length: 50. m
CapillarySqualane100.833.Dielmann, Schwengers, et al., 1974Column length: 100. m; Column diameter: 0.25 mm
CapillarySqualane60.823.Dielmann, Schwengers, et al., 1974Column length: 100. m; Column diameter: 0.25 mm
CapillarySqualane80.828.Dielmann, Schwengers, et al., 1974Column length: 100. m; Column diameter: 0.25 mm
CapillarySqualane50.821.Rijks and Cramers, 1974N2; Column length: 100. m; Column diameter: 0.25 mm
CapillarySqualane70.826.Rijks and Cramers, 1974N2; Column length: 100. m; Column diameter: 0.25 mm
CapillaryVacuum Grease Oil (VM-4)35.820.Sidorov, Petrova, et al., 1972 
CapillaryVacuum Grease Oil (VM-4)45.823.Sidorov, Petrova, et al., 1972 
CapillaryVacuum Grease Oil (VM-4)50.824.Sidorov, Petrova, et al., 1972 
CapillaryVacuum Grease Oil (VM-4)58.826.Sidorov, Petrova, et al., 1972 
CapillaryVacuum Grease Oil (VM-4)68.829.Sidorov, Petrova, et al., 1972 
CapillarySqualane70.821.1Dimov and Schopov, 1971Column length: 100. m; Column diameter: 0.25 mm
PackedVacuum Grease Oil (VM-4)35.820.Sidorov, Ivanova, et al., 1971 
PackedSE-30130.846.Mitra and Saha, 1970N2, Chromosorb W; Column length: 6.1 m
PackedSqualane27.816.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm
PackedSqualane49.821.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm
PackedSqualane67.826.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm
PackedSqualane86.830.Hively and Hinton, 1968He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm

Kovats' RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryApiezon L837.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
CapillaryPetrocol DH820.6Censullo, Jones, et al., 200350. m/0.25 mm/0.5 «mu»m, He, 35. C @ 10. min, 3. K/min, 200. C @ 10. min
CapillarySPB-1815.95LECO Corporation, 200330. m/0.25 mm/0.25 «mu»m, 40. C @ 2. min, 10. K/min, 250. C @ 2. min
CapillaryDB-5827.0Xu, van Stee, et al., 200330. m/0.25 mm/1. «mu»m, He, 2.5 K/min; Tstart: 50. C; Tend: 200. C
CapillaryOV-101818.9Yin, Liu, et al., 2001N2, 1. K/min; Column length: 80. m; Column diameter: 0.22 mm; Tstart: 30. C; Tend: 130. C
CapillaryPetrocol DH817.White, Hackett, et al., 1992100. m/0.25 mm/0.5 «mu»m, He, 1. K/min; Tstart: 30. C; Tend: 220. C

Normal alkane RI, non-polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
CapillarySqualane100.832.Krupcik, Cellar, et al., 1986, 2Column length: 180. m; Column diameter: 0.25 mm
CapillarySqualane40.817.Krupcik, Cellar, et al., 1986, 2Column length: 180. m; Column diameter: 0.25 mm
CapillarySqualane70.825.Krupcik, Cellar, et al., 1986, 2Column length: 180. m; Column diameter: 0.25 mm
CapillaryOV-10150.816.Wu and Lu, 1984 
CapillaryOV-10170.822.Wu and Lu, 1984 

Normal alkane RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryPolydimethyl siloxane: CP-Sil 5 CB790.Bramston-Cook, 201360. m/0.25 mm/1.0 «mu»m, Helium, 45. C @ 1.45 min, 3.6 K/min, 210. C @ 2.72 min
CapillaryPONA822.Zhang, Ding, et al., 200950. m/0.20 mm/0.50 «mu»m, Nitrogen, 35. C @ 15. min, 2. K/min, 200. C @ 10. min
CapillarySqualane821.3Krupcik, Cellar, et al., 19860.1 K/min; Column length: 100. m; Column diameter: 0.25 mm
CapillarySqualane823.2Krupcik, Cellar, et al., 19860.2 K/min; Column length: 100. m; Column diameter: 0.25 mm
CapillarySqualane826.0Krupcik, Cellar, et al., 19860.4 K/min; Column length: 100. m; Column diameter: 0.25 mm
CapillarySqualane828.1Krupcik, Cellar, et al., 19860.6 K/min; Column length: 100. m; Column diameter: 0.25 mm
CapillarySqualane829.8Krupcik, Cellar, et al., 19860.8 K/min; Column length: 100. m; Column diameter: 0.25 mm
CapillarySqualane831.3Krupcik, Cellar, et al., 19861. K/min; Column length: 100. m; Column diameter: 0.25 mm
CapillarySqualane820.Krupcik, Cellar, et al., 1986, 20.1 K/min; Column length: 180. m; Column diameter: 0.25 mm; Tstart: 40. C
CapillarySqualane822.Krupcik, Cellar, et al., 1986, 20.2 K/min; Column length: 180. m; Column diameter: 0.25 mm; Tstart: 40. C
CapillarySqualane825.Krupcik, Cellar, et al., 1986, 20.4 K/min; Column length: 180. m; Column diameter: 0.25 mm; Tstart: 40. C
CapillarySqualane827.Krupcik, Cellar, et al., 1986, 20.6 K/min; Column length: 180. m; Column diameter: 0.25 mm; Tstart: 40. C
CapillarySqualane829.Krupcik, Cellar, et al., 1986, 20.8 K/min; Column length: 180. m; Column diameter: 0.25 mm; Tstart: 40. C
CapillarySqualane831.Krupcik, Cellar, et al., 1986, 21.0 K/min; Column length: 180. m; Column diameter: 0.25 mm; Tstart: 40. C

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.

Good, 1971
Good, W.D., The enthalpies of combustion and formation of n-propylcyclopentane and five methylethylcyclopentanes, J. Chem. Thermodyn., 1971, 3, 97-103. [all data]

Reid, 1972
Reid, Robert C., Handbook on vapor pressure and heats of vaporization of hydrocarbons and related compounds, R. C. Wilhort and B. J. Zwolinski, Texas A Research Foundation. College Station, Texas(1971). 329 pages.$10.00, AIChE J., 1972, 18, 6, 1278-1278, https://doi.org/10.1002/aic.690180637 . [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]

Osborn and Douslin, 1974
Osborn, Ann G.; Douslin, Donald R., Vapor-pressure relations for 15 hydrocarbons, J. Chem. Eng. Data, 1974, 19, 2, 114-117, https://doi.org/10.1021/je60061a022 . [all data]

Forziati, Norris, et al., 1949
Forziati, Alphonse F.; Norris, William R.; Rossini, Frederick D., Vapor pressures and boiling points of sixty API-NBS hydrocarbons, J. RES. NATL. BUR. STAN., 1949, 43, 6, 555-17, https://doi.org/10.6028/jres.043.050 . [all data]

Forziati, Norris, et al., 1949, 2
Forziati, A.F.; Norris, W.R.; Rossini, F.D., Vapor Pressures and Boiling Points of Sixty API-NBS Hydrocarbons, J. Res. Natl. Bur. Stand. (U.S.), 1949, 43, 6, 555-563, https://doi.org/10.6028/jres.043.050 . [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]

Krupcik, Cellar, et al., 1986
Krupcik, J.; Cellar, P.; Repka, D.; Garaj, J.; Guiochon, G., Use of Kováts retention indices for characterization of solutes in linear temperature-programmed capillary gas-liquid chromatography, J. Chromatogr., 1986, 351, 111-121, https://doi.org/10.1016/S0021-9673(01)83477-4 . [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]

Nabivach and Kirilenko, 1979
Nabivach, V.M.; Kirilenko, A.V., The use of retention indices for identifying the components of crude benzene, Solid Fuel Chem. (Engl. Transl.), 1979, 13, 3, 82-87. [all data]

Dielmann, Schwengers, et al., 1974
Dielmann, G.; Schwengers, D.; Schomburg, G., Gas-chromatographische Retentionsdaten und Strukture chemischer Verbindungen Gesättigte und ungesättigte alkylsubstituierte Cyclopentane und Methylcyclopentane, Chromatographia, 1974, 7, 5, 215-224, https://doi.org/10.1007/BF02321771 . [all data]

Rijks and Cramers, 1974
Rijks, J.A.; Cramers, C.A., High precision capillary gas chromatography of hydrocarbons, Chromatographia, 1974, 7, 3, 99-106, https://doi.org/10.1007/BF02269819 . [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]

Dimov and Schopov, 1971
Dimov, N.; Schopov, D., Empirische korrektion der physikalisch-chemischen retentionsindexe von kohlenwasserstoffen auf squalan, J. Chromatogr., 1971, 63, 223-228, https://doi.org/10.1016/S0021-9673(01)85634-X . [all data]

Sidorov, Ivanova, et al., 1971
Sidorov, R.I.; Ivanova, M.P.; Petrova, V.I., Temperature dependence of cycloalkane's retention and its using in identification of structure, Gazovaya Khromatografiya, 1971, 15, 18-26. [all data]

Mitra and Saha, 1970
Mitra, G.D.; Saha, N.C., Determination of Retention Indices of Saturated Hydrocarbons by Graphical Methods, J. Chromatogr. Sci., 1970, 8, 2, 95-102, https://doi.org/10.1093/chromsci/8.2.95 . [all data]

Hively and Hinton, 1968
Hively, R.A.; Hinton, R.E., Variation of the retention index with temperature on squalane substrates, J. Gas Chromatogr., 1968, 6, 4, 203-217, https://doi.org/10.1093/chromsci/6.4.203 . [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]

Censullo, Jones, et al., 2003
Censullo, A.C.; Jones, D.R.; Wills, M.T., Speciation of the volatile organic compounds (VOCs) in solventborne aerosol coatings by solid phase microextraction-gas chromatography, J. Coat. Technol., 2003, 75, 936, 47-53, https://doi.org/10.1007/BF02697922 . [all data]

LECO Corporation, 2003
LECO Corporation, Determination of hydrocarbon components in petroleum naphthas, 2003, retrieved from http://www.leco.org/customersupport/apps/separationscience/-190.pdf. [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]

Yin, Liu, et al., 2001
Yin, C.; Liu, W.; Li, Z.; Pan, Z.; Lin, T.; Zhang, M., Chemometrics to chemical modeling: structural coding in hydrocarbons and retention indices of gas chromatography, J. Sep. Sci., 2001, 24, 3, 213-220, https://doi.org/10.1002/1615-9314(20010301)24:3<213::AID-JSSC213>3.0.CO;2-4 . [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]

Krupcik, Cellar, et al., 1986, 2
Krupcik, J.; Cellar, P.; Repka, D., Analyza cyklickych a aromatickych uhlovodnikov s poctom uhlikovych atomov 8 kapilarnou plynovou chromatografiou, Ropa a Uhlie, 1986, 28, 8, 485-495. [all data]

Wu and Lu, 1984
Wu, J.; Lu, W., Kovats indices of C4-C10 hydrocarbons in apolar quartz capillary OV-101, Chin. J. Chromatogr., 1984, 1, 1, 11-17. [all data]

Bramston-Cook, 2013
Bramston-Cook, R., Kovats indices for C2-C13 hydrocarbons and selected oxygenated/halocarbons with 100 % dimethylpolysiloxane columns, 2013, retrieved from http://lotusinstruments.com/monographs/List .... [all data]

Zhang, Ding, et al., 2009
Zhang, X.; Ding, L.; Sun, Z.; Song, L.; Sun, T., Study on quantitative structure-retention relationships for hydrocarbons in FCC gasoline, Chromatographia, 2009, 70, 3/4, 511-518, https://doi.org/10.1365/s10337-009-1174-0 . [all data]


Notes

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