Cyclopentane, 1-ethyl-2-methyl-, cis-
- Formula: C8H16
- Molecular weight: 112.2126
- IUPAC Standard InChI: InChI=1S/C8H16/c1-3-8-6-4-5-7(8)2/h7-8H,3-6H2,1-2H3/t7-,8+/m0/s1
- IUPAC Standard InChIKey: BSKOLJVTLRLTHE-JGVFFNPUSA-N
- CAS Registry Number: 930-89-2
- 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: cis-1-Ethyl-2-Methylcyclopentane; cis-1-Methyl-2-ethylcyclopentane; 1-Methyl-cis-2-ethylcyclopentane; c-1-Ethyl-2-methylcyclopentane; 1-Ethyl-2-methylcyclopentane, (Z)-; 1-Ethyl-2-methylcyclopentane, cis
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Options:
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.
Phase change data
Go To: Top, 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 |
|---|---|---|---|---|---|
| Tboil | 401.1 ± 0.1 | K | AVG | N/A | Average of 6 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| Tfus | 190. ± 100. | K | AVG | N/A | Average of 8 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔvapH° | 40.2 | kJ/mol | N/A | Reid, 1972 | AC |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 42.5 | 253. | A | Stephenson and Malanowski, 1987 | Based on data from 238. to 304. K.; AC |
| 39.3 | 318. | A | Stephenson and Malanowski, 1987 | Based on data from 303. to 403. K.; AC |
| 41.6 | 273. | IP | Osborn and Douslin, 1974 | Based on data from 238. to 288. K.; AC |
| 38.3 | 337. | N/A | Forziati, Norris, et al., 1949 | Based on data from 322. to 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. to 288. | 4.7961 | 1760.951 | -27.21 | Osborn and Douslin, 1974 | Coefficents calculated by NIST from author's data. |
| 322.00 to 402.17 | 4.04224 | 1395.706 | -55.428 | Forziati, Norris, et al., 1949, 2 | Coefficents calculated by NIST from author's data. |
Gas Chromatography
Go To: Top, Phase change data, 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 | Squalane | 50. | 820.1 | Lunskii and Paizanskaya, 1988 | He; Column length: 50. m; Column diameter: 0.22 mm |
| Capillary | Squalane | 70. | 825.3 | Lunskii and Paizanskaya, 1988 | He; Column length: 50. m; Column diameter: 0.22 mm |
| Capillary | Squalane | 50. | 820.7 | Krupcik, Cellar, et al., 1986 | Column length: 180. m; Column diameter: 0.25 mm |
| Capillary | DB-1 | 60. | 820.3 | Lubeck and Sutton, 1983 | Column length: 60. m; Column diameter: 0.264 mm |
| Capillary | DB-1 | 60. | 820.8 | Lubeck and Sutton, 1983 | 60. m/0.259 mm/1. μm |
| Capillary | Squalane | 70. | 825.3 | Nabivach and Kirilenko, 1979 | N2; Column length: 50. m |
| Capillary | Squalane | 70. | 825.4 | Nabivach and Kirilenko, 1979 | N2; Column length: 50. m |
| Capillary | Squalane | 100. | 833. | Dielmann, Schwengers, et al., 1974 | Column length: 100. m; Column diameter: 0.25 mm |
| Capillary | Squalane | 60. | 823. | Dielmann, Schwengers, et al., 1974 | Column length: 100. m; Column diameter: 0.25 mm |
| Capillary | Squalane | 80. | 828. | Dielmann, Schwengers, et al., 1974 | Column length: 100. m; Column diameter: 0.25 mm |
| Capillary | Squalane | 50. | 821. | Rijks and Cramers, 1974 | N2; Column length: 100. m; Column diameter: 0.25 mm |
| Capillary | Squalane | 70. | 826. | Rijks and Cramers, 1974 | N2; Column length: 100. m; Column diameter: 0.25 mm |
| Capillary | Vacuum Grease Oil (VM-4) | 35. | 820. | Sidorov, Petrova, et al., 1972 | |
| Capillary | Vacuum Grease Oil (VM-4) | 45. | 823. | Sidorov, Petrova, et al., 1972 | |
| Capillary | Vacuum Grease Oil (VM-4) | 50. | 824. | Sidorov, Petrova, et al., 1972 | |
| Capillary | Vacuum Grease Oil (VM-4) | 58. | 826. | Sidorov, Petrova, et al., 1972 | |
| Capillary | Vacuum Grease Oil (VM-4) | 68. | 829. | Sidorov, Petrova, et al., 1972 | |
| Capillary | Squalane | 70. | 821.1 | Dimov and Schopov, 1971 | Column length: 100. m; Column diameter: 0.25 mm |
| Packed | Vacuum Grease Oil (VM-4) | 35. | 820. | Sidorov, Ivanova, et al., 1971 | |
| Packed | SE-30 | 130. | 846. | Mitra and Saha, 1970 | N2, Chromosorb W; Column length: 6.1 m |
| Packed | Squalane | 27. | 816. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
| Packed | Squalane | 49. | 821. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
| Packed | Squalane | 67. | 826. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
| Packed | Squalane | 86. | 830. | Hively and Hinton, 1968 | He, Chromosorb P; Column length: 15. m; Column diameter: 0.25 mm |
Kovats' RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Apiezon L | 837. | Louis, 1971 | N2, 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
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Petrocol DH | 820.6 | 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 | 815.95 | LECO Corporation, 2003 | 30. m/0.25 mm/0.25 μm, 40. C @ 2. min, 10. K/min, 250. C @ 2. min |
| Capillary | DB-5 | 827.0 | Xu, van Stee, et al., 2003 | 30. m/0.25 mm/1. μm, He, 2.5 K/min; Tstart: 50. C; Tend: 200. C |
| Capillary | OV-101 | 818.9 | 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 | 817. | White, Hackett, et al., 1992 | 100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C |
Normal alkane RI, non-polar column, isothermal
| Column type | Active phase | Temperature (C) | I | Reference | Comment |
|---|---|---|---|---|---|
| Capillary | Squalane | 100. | 832. | Krupcik, Cellar, et al., 1986, 2 | Column length: 180. m; Column diameter: 0.25 mm |
| Capillary | Squalane | 40. | 817. | Krupcik, Cellar, et al., 1986, 2 | Column length: 180. m; Column diameter: 0.25 mm |
| Capillary | Squalane | 70. | 825. | Krupcik, Cellar, et al., 1986, 2 | Column length: 180. m; Column diameter: 0.25 mm |
| Capillary | OV-101 | 50. | 816. | Wu and Lu, 1984 | |
| Capillary | OV-101 | 70. | 822. | Wu and Lu, 1984 |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Polydimethyl siloxane: CP-Sil 5 CB | 790. | 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 | PONA | 822. | 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 | Squalane | 821.3 | Krupcik, Cellar, et al., 1986 | 0.1 K/min; Column length: 100. m; Column diameter: 0.25 mm |
| Capillary | Squalane | 823.2 | Krupcik, Cellar, et al., 1986 | 0.2 K/min; Column length: 100. m; Column diameter: 0.25 mm |
| Capillary | Squalane | 826.0 | Krupcik, Cellar, et al., 1986 | 0.4 K/min; Column length: 100. m; Column diameter: 0.25 mm |
| Capillary | Squalane | 828.1 | Krupcik, Cellar, et al., 1986 | 0.6 K/min; Column length: 100. m; Column diameter: 0.25 mm |
| Capillary | Squalane | 829.8 | Krupcik, Cellar, et al., 1986 | 0.8 K/min; Column length: 100. m; Column diameter: 0.25 mm |
| Capillary | Squalane | 831.3 | Krupcik, Cellar, et al., 1986 | 1. K/min; Column length: 100. m; Column diameter: 0.25 mm |
| Capillary | Squalane | 820. | Krupcik, Cellar, et al., 1986, 2 | 0.1 K/min; Column length: 180. m; Column diameter: 0.25 mm; Tstart: 40. C |
| Capillary | Squalane | 822. | Krupcik, Cellar, et al., 1986, 2 | 0.2 K/min; Column length: 180. m; Column diameter: 0.25 mm; Tstart: 40. C |
| Capillary | Squalane | 825. | Krupcik, Cellar, et al., 1986, 2 | 0.4 K/min; Column length: 180. m; Column diameter: 0.25 mm; Tstart: 40. C |
| Capillary | Squalane | 827. | Krupcik, Cellar, et al., 1986, 2 | 0.6 K/min; Column length: 180. m; Column diameter: 0.25 mm; Tstart: 40. C |
| Capillary | Squalane | 829. | Krupcik, Cellar, et al., 1986, 2 | 0.8 K/min; Column length: 180. m; Column diameter: 0.25 mm; Tstart: 40. C |
| Capillary | Squalane | 831. | Krupcik, Cellar, et al., 1986, 2 | 1.0 K/min; Column length: 180. m; Column diameter: 0.25 mm; Tstart: 40. C |
References
Go To: Top, Phase change data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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, Phase change data, Gas Chromatography, References
- Symbols used in this document:
Tboil Boiling point Tfus Fusion (melting) point ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.