Naphthalene, 1,5-dimethyl-
- Formula: C12H12
- Molecular weight: 156.2237
- IUPAC Standard InChIKey: SDDBCEWUYXVGCQ-UHFFFAOYSA-N
- CAS Registry Number: 571-61-9
- 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. - Other names: 1,5-Dimethylnaphthalene
- Permanent link for this species. Use this link for bookmarking this species for future reference.
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Phase change data
Go To: Top, Gas phase ion energetics 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 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 | 538.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Tboil | 542.3 | K | N/A | Kruber and Oberkobusch, 1951 | Uncertainty assigned by TRC = 2. K; TRC |
Tboil | 538. | K | N/A | Bailey, Bryant, et al., 1947 | Uncertainty assigned by TRC = 6. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 351. | K | N/A | Kotula and Rabczuk, 1985 | Uncertainty assigned by TRC = 2. K; TRC |
Tfus | 354. | K | N/A | Cocker, Cross, et al., 1953 | Uncertainty assigned by TRC = 4. K; TRC |
Tfus | 355.15 | K | N/A | Luther and Riechel, 1950 | Uncertainty assigned by TRC = 0.5 K; TRC |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
15.3 | 398. | GC | Lei, Chankalal, et al., 2002 | Based on data from 323. to 473. K.; AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
4.8 | 355.2 | DSC | Cheon and Kim, 2007 | AC |
Gas phase ion energetics data
Go To: Top, Phase change 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 as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.30 ± 0.05 | EI | Loudon and Mazengo, 1974 | LLK |
7.85 ± 0.03 | PE | Heilbronner, Hoshi, et al., 1976 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C11H9+ | 12.85 ± 0.05 | CH3 | EI | Loudon and Mazengo, 1974 | LLK |
C12H11+ | 12.85 ± 0.05 | H | EI | Loudon and Mazengo, 1974 | LLK |
Gas Chromatography
Go To: Top, Phase change data, Gas phase ion energetics 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 | OV-1 | 150. | 1440. | Zhang, Chen, et al., 1997 | 25. m/0.2 mm/0.33 μm, N2 |
Capillary | OV-1 | 150. | 1440. | Zhang, Chen, et al., 1997 | 25. m/0.2 mm/0.33 μm, N2 |
Capillary | OV-1 | 160. | 1448. | Zhang, Chen, et al., 1997 | 25. m/0.2 mm/0.33 μm, N2 |
Capillary | CP Sil 8 CB | 130. | 1445.8 | Schaefer and Höltkemeier, 1992 | 50. m/0.32 mm/0.25 μm |
Capillary | OV-1 | 130. | 1421. | Engewald, Wennrich, et al., 1979 | Column length: 50. m; Column diameter: 0.23 mm |
Capillary | Squalane | 130. | 1399. | Bogoslovsky, Anvaer, et al., 1978 |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-5 | 1428.3 | Song, Lai, et al., 2003 | 30. m/0.25 mm/0.25 μm, He, 2. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | DB-5 | 1439.8 | Song, Lai, et al., 2003 | 30. m/0.25 mm/0.25 μm, He, 4. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | DB-5 | 1446.4 | Song, Lai, et al., 2003 | 30. m/0.25 mm/0.25 μm, He, 6. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | DB-5 | 1428.3 | Lai and Song, 1995 | 30. m/0.25 mm/0.25 μm, He, 2. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | DB-5 | 1439.8 | Lai and Song, 1995 | 30. m/0.25 mm/0.25 μm, He, 4. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | DB-5 | 1446.4 | Lai and Song, 1995 | 30. m/0.25 mm/0.25 μm, He, 6. K/min; Tstart: 40. C; Tend: 310. C |
Capillary | Petrocol DH | 1398.4 | White, Douglas, et al., 1992 | 100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C |
Capillary | Petrocol DH | 1398. | White, Hackett, et al., 1992 | 100. m/0.25 mm/0.5 μm, He, 1. K/min; Tstart: 30. C; Tend: 220. C |
Capillary | DB-5 | 1450. | Rostad and Pereira, 1986 | 30. m/0.26 mm/0.25 μm, He, 50. C @ 4. min, 6. K/min, 300. C @ 20. min |
Van Den Dool and Kratz RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | HP-5 | 1438.4 | Sandercock and du Pasquier, 2003 | 30. m/0.25 mm/0.25 μm, He; Program: 40C(3min) => 4C/min => 208C => 25C/min => 290C(5min) |
Capillary | DB-5 | 1425. | Havenga and Rohwer, 1999 | 30. m/0.25 mm/0.25 μm, He; Program: 60 0C 7 0C/min -> 130 0C 5 0C/min -> 200 0C 6 0C/min -> 260 0C 20 0C/min -> 320 0C (4 min) |
Van Den Dool and Kratz RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Supelcowax-10 | 2048. | Chung, 1999 | 60. m/0.25 mm/0.25 μm, He, 35. C @ 5. min, 2. K/min, 195. C @ 90. min |
Normal alkane RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | Squalane | 130. | 1400. | Papazova and Pankova, 1975 | N2; Column length: 100. m; Column diameter: 0.25 mm |
Packed | Polydimethyl siloxane | 147. | 1430. | Ferrand, 1962 |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Ultra-1 | 1420. | Elizalde-González, Hutfliess, et al., 1996 | 50. m/0.2 mm/0.33 μm, H2, 3. K/min, 300. C @ 35. min; Tstart: 60. C |
Normal alkane RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | CP Sil 8 CB | 1446. | Bertsch, 1999 | Program: not specified |
Capillary | OV-1 | 1420.7 | Dimov, Osman, et al., 1994 | Program: not specified |
Lee's RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-5MS | 246.51 | Sun, Zhou, et al., 2008 | 30. m/0.25 mm/0.25 μm, 50. C @ 2. min, 6. K/min, 300. C @ 16. min |
Capillary | 5 % Phenyl methyl siloxane | 244.98 | Skrbic and Onjia, 2006 | 2. K/min; Tstart: 50. C; Tend: 250. C |
Capillary | DB-5MS | 247.00 | Chen, Keeran, et al., 2002 | 30. m/0.25 mm/0.5 μm, 40. C @ 1. min, 10. K/min; Tend: 310. C |
Capillary | SE-52 | 245.83 | Wang, Peng, et al., 1997 | 4. K/min; Column length: 30. m; Column diameter: 0.30 mm; Tstart: 40. C; Tend: 250. C |
Capillary | CP Sil 8 CB | 246.7 | Bundt, Herbel, et al., 1991 | 50. m/0.25 mm/0.25 μm, He, 4. K/min; Tstart: 80. C; Tend: 300. C |
Capillary | DB-5 | 247.62 | Rostad and Pereira, 1986 | 30. m/0.26 mm/0.25 μm, He, 50. C @ 4. min, 6. K/min, 300. C @ 20. min |
Capillary | SE-52 | 246.92 | Vassilaros, Kong, et al., 1982 | 20. m/0.30 mm/0.25 μm, H2, 40. C @ 2. min, 4. K/min; Tend: 265. C |
Capillary | SE-52 | 244.98 | Lee, Vassilaros, et al., 1979 | 12. m/0.3 mm/0.34 μm, He, 2. K/min; Tstart: 50. C; Tend: 250. C |
Lee's RI, non-polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-5 | 245.6 | Fuentes, Font, et al., 2007 | Column length: 60. m; Program: not specified |
Capillary | DB-5MS | 247.3 | Aracil, Font, et al., 2005 | Column length: 60. m; Column diameter: 0.25 mm; Program: not specified |
Capillary | Ultra-1 | 245.0 | Sremac, Skrbic, et al., 2005 | 50. m/0.32 mm/0.50 μm, Nitrogen; Program: 40-100 0C 3-15 0C/min -> 290 0C |
Capillary | HP-5 | 247.62 | Sandercock and du Pasquier, 2003 | 30. m/0.25 mm/0.25 μm, He; Program: 40C(3min) => 4C/min => 208C => 25C/min => 290C(5min) |
Capillary | CP Sil 8 CB | 246.8 | Bundt, Herbel, et al., 1991 | 50. m/0.25 mm/0.25 μm, He; Program: not specified |
Capillary | CP Sil 8 CB | 246.8 | Bundt, Herbel, et al., 1991 | 50. m/0.25 mm/0.25 μm, He; Program: not specified |
References
Go To: Top, Phase change data, Gas phase ion energetics data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]
Kruber and Oberkobusch, 1951
Kruber, O.; Oberkobusch, R.,
Chem. Ber., 1951, 84, 826. [all data]
Bailey, Bryant, et al., 1947
Bailey; Bryant; Hancock; Morrell; Smith, J.O.,
The ten dimethylnaphthalenes, their physical properties, molecular compounds, and ultra-violet spectra,
J. Inst. Pet., 1947, 33, 503. [all data]
Kotula and Rabczuk, 1985
Kotula, I.; Rabczuk, A.,
DTA Investigation of the Solid-Liquid Equilibrium for Mehtyl Derivatives of Naphthalene with Some Nitroaromatics,
J. Therm. Anal., 1985, 30, 195. [all data]
Cocker, Cross, et al., 1953
Cocker, W.; Cross, B.E.; Edward, D.S.; Jenkinson, D.S.; McCormick, J.,
J. Chem. Soc., 1953, 1953, 2355-62. [all data]
Luther and Riechel, 1950
Luther, H.; Riechel, C.,
The Raman Spectra of Polymethylnphthalenes,
Z. Phys. Chem. (Leipzig), 1950, 195, 103. [all data]
Lei, Chankalal, et al., 2002
Lei, Ying Duan; Chankalal, Raymond; Chan, Anita; Wania, Frank,
Supercooled Liquid Vapor Pressures of the Polycyclic Aromatic Hydrocarbons,
J. Chem. Eng. Data, 2002, 47, 4, 801-806, https://doi.org/10.1021/je0155148
. [all data]
Cheon and Kim, 2007
Cheon, Yang-Ho; Kim, Kwang-Joo,
Solid-Liquid Equilibria of Binary Mixtures of Dimethylnaphthalene Isomers,
J. Chem. Eng. Data, 2007, 52, 4, 1390-1393, https://doi.org/10.1021/je700088n
. [all data]
Loudon and Mazengo, 1974
Loudon, A.G.; Mazengo, R.Z.,
Steric strain and electron-impact. The behaviour of some n, n'-dimethyl- 1,1-binaphthyls, some n, n'-dimethylbiphenyls and model compounds,
Org. Mass Spectrom., 1974, 8, 179. [all data]
Heilbronner, Hoshi, et al., 1976
Heilbronner, E.; Hoshi, T.; von Rosenberg, J.L.; Hafner, K.,
Alkyl-induced, natural hypsochromic shifts of the 2A←2X and 2B←2X transitions of azulene and naphthalene radical cations,
Nouv. J. Chim., 1976, 1, 105. [all data]
Zhang, Chen, et al., 1997
Zhang, M.; Chen, B.; Shen, S.; Chen, S.,
Compositional studies of high-temperature coal tar by g.c.-FT-i.r. analysis of middle oil fractions,
Fuel, 1997, 76, 5, 415-423, https://doi.org/10.1016/S0016-2361(97)85518-4
. [all data]
Schaefer and Höltkemeier, 1992
Schaefer, R.G.; Höltkemeier, J.,
Direkte Analyse von dimethylnaphthalinen in Erdölen mittels zweidimensionaler Kapillar-Gas-Chromatographie,
Anal. Chim. Acta., 1992, 260, 1, 107-112, https://doi.org/10.1016/0003-2670(92)80133-R
. [all data]
Engewald, Wennrich, et al., 1979
Engewald, W.; Wennrich, L.; Ritter, E.,
Molekülstruktur und Retentionsverhalten. XII. Zur Retention von Alkylnaphthalinen Bei der Gasverteilungs- und Gas-Adsorptions-Chromatographie,
J. Chromatogr., 1979, 174, 2, 315-323, https://doi.org/10.1016/S0021-9673(00)86005-7
. [all data]
Bogoslovsky, Anvaer, et al., 1978
Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S.,
Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192. [all data]
Song, Lai, et al., 2003
Song, C.; Lai, W.-C.; Madhusudan Reddy, K.; Wei, B.,
Chapter 7. Temperature-programmed retention indices for GC and GC-MS of hydrocarbon fuels and simulated distillation GC of heavy oils
in Analytical advances for hydrocarbon research, Hsu,C.S., ed(s)., Kluwer Academic/Plenum Publishers, New York, 2003, 147-193. [all data]
Lai and Song, 1995
Lai, W.-C.; Song, C.,
Temperature-programmed retention indices for g.c. and g.c.-m.s. analysis of coal- and petroleum-derived liquid fuels,
Fuel, 1995, 74, 10, 1436-1451, https://doi.org/10.1016/0016-2361(95)00108-H
. [all data]
White, Douglas, et al., 1992
White, C.M.; Douglas, L.J.; Hackett, J.P.; Anderson, R.R.,
Characterization of synthetic gasoline from the chloromethane-zeolite reaction,
Energy Fuels, 1992, 6, 1, 76-82, https://doi.org/10.1021/ef00031a012
. [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]
Rostad and Pereira, 1986
Rostad, C.E.; Pereira, W.E.,
Kovats and Lee retention indices determined by gas chromatography/mass spectrometry for organic compounds of environmental interest,
J. Hi. Res. Chromatogr. Chromatogr. Comm., 1986, 9, 6, 328-334, https://doi.org/10.1002/jhrc.1240090603
. [all data]
Sandercock and du Pasquier, 2003
Sandercock, P.M.L.; du Pasquier, E.,
Chemical fingerprinting of unevaporated automotive gasoline samples,
Forensic Sci. Int., 2003, 134, 1, 1-10, https://doi.org/10.1016/S0379-0738(03)00081-1
. [all data]
Havenga and Rohwer, 1999
Havenga, W.J.; Rohwer, E.R.,
Chemical Characterization and Screening of Hydrocarbon Pollution in Industrial Soils by Headspace Solid-Phase Microextraction,
J. Chromatogr., 1999, 848, 1-2, 279-295, https://doi.org/10.1016/S0021-9673(99)00522-1
. [all data]
Chung, 1999
Chung, H.Y.,
Volatile components in crabmeats of Charybdis feriatus,
J. Agric. Food Chem., 1999, 47, 6, 2280-2287, https://doi.org/10.1021/jf981027t
. [all data]
Papazova and Pankova, 1975
Papazova, D.I.; Pankova, M.C.,
Identification of individual aromatic hydrocarbons in kerosene fraction (b.p. 150-250 °),
J. Chromatogr., 1975, 105, 2, 411-414, https://doi.org/10.1016/S0021-9673(01)82276-7
. [all data]
Ferrand, 1962
Ferrand, R.,
Gas phase chromatography using retention indices for the analysis of tars and their hydrogenation products,
Journees internationales d'etude des methodes de separation immediate at de chromatographie; Org. sur l'initiative du IX., 1962, 132-140. [all data]
Elizalde-González, Hutfliess, et al., 1996
Elizalde-González, M.P.; Hutfliess, M.; Hedden, K.,
Retention index system, adsorption characteristics, and sructure correlations of polycyclic aromatic hydrocarbons in fuels,
J. Hi. Res. Chromatogr., 1996, 19, 6, 345-352, https://doi.org/10.1002/jhrc.1240190608
. [all data]
Bertsch, 1999
Bertsch, W.,
Two-dimensional gas chromatography. Concepts, instrumentation, and applications. Part 1: Fundamentals, conventional two-dimensional gas chromatography, selected applications,
J. Hi. Res. Chromatogr., 1999, 22, 12, 647-665, https://doi.org/10.1002/(SICI)1521-4168(19991201)22:12<647::AID-JHRC647>3.0.CO;2-V
. [all data]
Dimov, Osman, et al., 1994
Dimov, N.; Osman, A.; Mekenyan, Ov.; Papazova, D.,
Selection of moelcular descriptors used in quantitative structure-gas chromatographic retention relationships. I. Application to alkylbenzenes and naphthalenes,
Anal. Chim. Acta., 1994, 298, 3, 303-317, https://doi.org/10.1016/0003-2670(94)00280-0
. [all data]
Sun, Zhou, et al., 2008
Sun, P.; Zhou, Q.; Li, G.; Wang, X.; Zhao, Y.; Cao, L.,
fingerprint analysis of polycyclic aromatic hydrocarbons in crude oil by internal standard method,
J. Instrumental Anal., 2008, 27, 4, 344-348. [all data]
Skrbic and Onjia, 2006
Skrbic, B.; Onjia, A.,
Prediction of Lee Retention Indices of Polycyclic Aromatic Hydrocarbons by Artificial Neural Networks,
J. Chromatorg. A, 2006, 1108, 2, 279-284, https://doi.org/10.1016/j.chroma.2006.01.080
. [all data]
Chen, Keeran, et al., 2002
Chen, P.H.; Keeran, W.S.; Van Ausdale, W.A.; Schindler, D.R.; Roberts, D.W.,
Application of Lee retention indices to the confirmation of tentatively identified compounds from GC/MS analysis of environmental samples, Technical paper, Analytical Services Division, Environmental ScienceEngineering, Inc, PO Box 1703, Gainesville, FL 32602, 2002, 11. [all data]
Wang, Peng, et al., 1997
Wang, Y.; Peng, P.; Cui, S.; Zhang, Y.,
Identification of PAH in the Suzhou River bed sediments by GC/MS and PAH retention index system,
J. Nanjing Norm. Univ. (Nat. Sci.), 1997, 20, 2, 47-68. [all data]
Bundt, Herbel, et al., 1991
Bundt, J.; Herbel, W.; Steinhart, H.; Franke, S.; Francke, W.,
Structure-type separation of diesel fuels by solid phase extraction and identification of the two- and three-ring aromatics by capillary GC-mass spectrometry,
J. Hi. Res. Chromatogr., 1991, 14, 2, 91-98, https://doi.org/10.1002/jhrc.1240140205
. [all data]
Vassilaros, Kong, et al., 1982
Vassilaros, D.L.; Kong, R.C.; Later, D.W.; Lee, M.L.,
Linear retention index system for polycyclic aromatic compounds. Critical evaluation and additional indices,
J. Chromatogr., 1982, 252, 1-20, https://doi.org/10.1016/S0021-9673(01)88394-1
. [all data]
Lee, Vassilaros, et al., 1979
Lee, M.L.; Vassilaros, D.L.; White, C.M.; Novotny, M.,
Retention Indices for Programmed-Temperature Capillary-Column Gas Chromatography of Polycyclic Aromatic Hydrocarbons,
Anal. Chem., 1979, 51, 6, 768-773, https://doi.org/10.1021/ac50042a043
. [all data]
Fuentes, Font, et al., 2007
Fuentes, M.J.; Font, R.; Gomez-Rico, M.F.; Martin-Gullon, I.,
Pyrolysis and combustion of waste lubricant oil from diesel cars: Decomposition and pollutants,
J. Anal. Appl. Pyrolysis, 2007, 79, 1-2, 215-226, https://doi.org/10.1016/j.jaap.2006.12.004
. [all data]
Aracil, Font, et al., 2005
Aracil, I.; Font, R.; Conesa, J.A.,
Semivolatile and volatile compounds from the pyrolysis and combustion of polyvinyl chloride,
J. Anal. Appl. Pyrolysis, 2005, 74, 1-2, 465-478, https://doi.org/10.1016/j.jaap.2004.09.008
. [all data]
Sremac, Skrbic, et al., 2005
Sremac, S.; Skrbic, B.; Onjia, A.,
Artificial neural network prediction of quantitative structure-retention relationships of polycyclic aromatic hydrocarbons in gas chromatography,
J. Serb. Chem. Soc., 2005, 70, 11, 1291-1300, https://doi.org/10.2298/JSC0511291S
. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, Gas Chromatography, References
- Symbols used in this document:
AE Appearance energy Tboil Boiling point Tfus Fusion (melting) point ΔfusH Enthalpy of fusion ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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