Phenol, 2,6-dimethyl-

• Formula: C₈H₁₀O
• Molecular weight: 122.1644
• IUPAC Standard InChI: InChI=1S/C8H10O/c1-6-4-3-5-7(2)8(6)9/h3-5,9H,1-2H3 Copy

  
• IUPAC Standard InChIKey: NXXYKOUNUYWIHA-UHFFFAOYSA-N Copy
• CAS Registry Number: 576-26-1
• 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: 2,6-Xylenol; 2,6-Dimethylphenol; 1,2,6-Xylenol; 1,3-Dimethyl-2-hydroxybenzene; 1-Hydroxy-2,6-dimethylbenzene; 2,6-Dmp; NSC 2123
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Phase change data
  • Gas phase ion energetics data
  • IR Spectrum
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
• Options:
  • Switch to SI units

Data at NIST subscription sites:

• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

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.

Gas phase thermochemistry data

Go To: Top, Phase change data, Gas phase ion energetics 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 as indicated in comments:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Constant pressure heat capacity of gas

Phase change data

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics 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 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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing

Enthalpy of vaporization

Antoine Equation Parameters

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

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

Enthalpy of sublimation

Enthalpy of fusion

Entropy of fusion

Gas phase ion energetics data

Go To: Top, Gas 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: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

View reactions leading to C₈H₁₀O⁺ (ion structure unspecified)

Ionization energy determinations

IR Spectrum

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, Gas Chromatography, References, Notes

Data compiled by: Coblentz Society, Inc.

• SOLUTION (10% CCl4 FOR 2.6-7.5, 10% CS2 FOR 7.5-24); BECKMAN IR-9 (GRATING); DIGITIZED BY COBLENTZ SOCIETY (BATCH I) FROM HARD COPY; 2 cm^-1 resolution

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

• gas

Gas Chromatography

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, 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.

Kovats' RI, non-polar column, custom temperature program

View large format table.

Van Den Dool and Kratz RI, non-polar column, temperature ramp

View large format table.

Van Den Dool and Kratz RI, non-polar column, custom temperature program

View large format table.

Van Den Dool and Kratz RI, polar column, temperature ramp

View large format table.

Normal alkane RI, non-polar column, isothermal

View large format table.

Normal alkane RI, non-polar column, temperature ramp

View large format table.

Normal alkane RI, non-polar column, custom temperature program

View large format table.

Normal alkane RI, polar column, temperature ramp

View large format table.

Normal alkane RI, polar column, custom temperature program

View large format table.

Lee's RI, non-polar column, temperature ramp

View large format table.

Lee's RI, non-polar column, custom temperature program

View large format table.

References

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Gas Chromatography, Notes

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

Lebedev, Vasil'ev, et al., 1996
Lebedev, B.V.; Vasil'ev, V.G.; Bykova, T.A.; Kiparisova, E.G.; Wunderliche, B., Thermodynamics of 2,6-dimethylphenol, of the reaction of its oxidative dehydropolycondensation, and of the resultant poly(2,6-dimethyl-p-phenylene oxide)at 0-600 K, Vysokomol. Soedin., Ser. A, 1996, 38, 216-225. [all data]

Andon, Biddiscombe, et al., 1960
Andon, R.J.L.; Biddiscombe, D.P.; Cox, J.D.; Handley, R.; Harrop, D.; Herington, E.F.G.; Martin, J.F., Thermodynamic properties of organic oxygen compounds. Part I. Preparation and physical properties of pure phenol, cresols, and xylenols, J. Chem. Soc., 1960, 5246-5254. [all data]

Lindberg, Jauhiainen, et al., 1972
Lindberg, J.J.; Jauhiainen, T.P.; Savolainen, A., Oxidative coupling of 2,6-disubstituted phenols and the heat of combustion of the resulting products, Pap. Puu, 1972, 54, 91-93. [all data]

Kudchadker S.A., 1979
Kudchadker S.A., Property data available for coal chemicals, Hydrocarbon Process., 1979, 58, 169-171. [all data]

Ambrose, 1963
Ambrose, D., Critical Temperatures of Some Phenols and Other Organic Compounds, Trans. Faraday Soc., 1963, 59, 1988. [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

Morawetz, 1971
Morawetz, E., Chem. Scr., 1971, 1, 103. [all data]

Morawetz, Elvebredd, et al., 1968
Morawetz, Ernst; Elvebredd, I.; Brunvoll, J.; Hagen, G.; Paasivirta, Jaakko, A Non-Equilibrium Low Vapor Pressure Heat of Vaporization Calorimeter. Part I. Vapor Pressure Range 200-10^-3 mm Hg., Acta Chem. Scand., 1968, 22, 1509-1531, https://doi.org/10.3891/acta.chem.scand.22-1509 . [all data]

Wolf and Weghofer, 1938
Wolf, K.L.; Weghofer, H., Uber sublimationswarmen, Z. Phys. Chem., 1938, 39, 194-208. [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]

Andon, Biddiscombe, et al., 1960, 2
Andon, R.J.L.; Biddiscombe, D.P.; Cox, J.D.; Handley, R.; Harrop, D.; Herington, E.F.G.; Martin, J.F., 1009. Thermodynamic properties of organic oxygen compounds. Part I. Preparation and physical properties of pure phenol, cresols, and xylenols, J. Chem. Soc., 1960, 5246, https://doi.org/10.1039/jr9600005246 . [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]

Poeti, Fanelli, et al., 1982
Poeti, G.; Fanelli, E.; Braghetti, M., A differential scanning calorimetric study of some phenol derivatives, J. Therm. Anal., 1982, 24(2), 273-279. [all data]

Jamróz, Palczewska-Tulinska, et al., 1998
Jamróz, Malgorzata E.; Palczewska-Tulinska, Marcela; Wyrzykowska-Stankiewicz, Danuta; Szafranski, Andrzej M.; Polaczek, Jerzy; Dobrowolski, Jan Cz.; Jamróz, Michal H.; Mazurek, Aleksander P., The urea--phenol(s) systems, Fluid Phase Equilibria, 1998, 152, 2, 307-326, https://doi.org/10.1016/S0378-3812(98)90206-0 . [all data]

Acree, 1991
Acree, William E., Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation, Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H . [all data]

Maier and Turner, 1973
Maier, J.P.; Turner, D.W., Steric inhibition of resonance studied by molecular photoelectron spectroscopy Part 3. Anilines, Phenols and Related Compounds, J. Chem. Soc. Faraday Trans. 2, 1973, 69, 521. [all data]

Kobayashi and Nagakura, 1974
Kobayashi, T.; Nagakura, S., Photoelectron spectra of substituted benzenes, Bull. Chem. Soc. Jpn., 1974, 47, 2563. [all data]

Dewar, Ernstbrunner, et al., 1974
Dewar, P.S.; Ernstbrunner, E.; Gilmore, J.R.; Godfrey, M.; Mellor, J.M., Conformational analysis of alkyl aryl ethers and alkyl aryl sulphides by photoelectron spectroscopy, Tetrahedron, 1974, 30, 2455. [all data]

Lebrón-Aguilar, Eduardo Quintanilla-López, et al., 2002
Lebrón-Aguilar, R.; Eduardo Quintanilla-López, J.; Antonio García-Domínguez, J., Improving the accuracy of Kováts' retention indices in isothermal gas chromatography, J. Chromatogr. A, 2002, 945, 1-2, 185-194, https://doi.org/10.1016/S0021-9673(01)01463-7 . [all data]

Berezkin, Korolev, et al., 2000
Berezkin, V.G.; Korolev, A.A.; Malyukova, I.V., A comparative analysis of retention values obtained on fused silica capillary columns from various manufacturers, Analusis, 2000, 28, 2, 132-135, https://doi.org/10.1051/analusis:2000105 . [all data]

Berezkin, Popova, et al., 1997
Berezkin, V.G.; Popova, T.P.; Shiryayeva, V.Ye.; Nomura, N., Gas-chromatographic separation of monoalkylphenols on polar and non-polar phases by means of capillary chromatography, Pet. Chem. USSR (Engl. Transl.), 1997, 37, 2, 161-167. [all data]

Malyukova, Berezkin, et al., 1997
Malyukova, I.V.; Berezkin, V.G.; Kramers, K.; Jansen, H.G., Capillary chromatrography of hydrocarbons and their derivatives. Use of sulphur hexafluoride as the carrier gas, Pet. Chem. USSR (Engl. Transl.), 1997, 37, 3, 265-272. [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]

Juvancz, Cserháti, et al., 1994
Juvancz, Z.; Cserháti, T.; Markides, K.E.; Bradshaw, J.S.; Lee, M.L., Characterization of some new polysiloxane stationary phases by principal component analysis, Chromatographia, 1994, 38, 3/4, 227-231, https://doi.org/10.1007/BF02290341 . [all data]

Zhang, Li, et al., 1992
Zhang, M.J.; Li, S.D.; Chen, B.J., Compositional studies of high-temperature coal tar by GC/FTIR analysis of light oil fractions, Chromatographia, 1992, 33, 3/4, 138-146, https://doi.org/10.1007/BF02275894 . [all data]

Farkas, Sojak, et al., 1989
Farkas, P.; Sojak, L.; Kovac, M.; Janak, J., Interface Adsorption and Reproducibility of Retention Indices in Glass Capillary Columns with Dimethylpolysiloxane Stationary Phases Cross-Linked by γ-Irradiation, J. Chromatogr., 1989, 471, 251-261, https://doi.org/10.1016/S0021-9673(00)94173-6 . [all data]

Engewald, Billing, et al., 1988
Engewald, W.; Billing, U.; Topalova, I.; Petsev, N., Structure-retention correlations of alkylphenols in gas-liquid and gas-solid chromatography, J. Chromatogr., 1988, 446, 71-77, https://doi.org/10.1016/S0021-9673(00)94419-4 . [all data]

Tiess, 1984
Tiess, D., Gaschromatographische Retentionsindices von 125 leicht- bis mittelflüchtigen organischen Substanzen toxikologisch-analytischer Relevanz auf SE-30, Wiss. Z. Wilhelm-Pieck-Univ. Rostock Math. Naturwiss. Reihe, 1984, 33, 6-9. [all data]

Radecki, Grzybowski, et al., 1979
Radecki, A.; Grzybowski, J.; Lamparczyk, H.; Nasal, A., Relationships between retention indices and substituent constants of phenols on polar stationary phases, J. Hi. Res. Chromatogr. Chromatogr. Comm., 1979, 2, 9, 581-582, https://doi.org/10.1002/jhrc.1240020911 . [all data]

Grzybowski, Lamparczyk, et al., 1980
Grzybowski, J.; Lamparczyk, H.; Nasal, A.; Radecki, A., Relationship between the retention indices of phenols on polar and non-polar stationary phases, J. Chromatogr., 1980, 196, 2, 217-223, https://doi.org/10.1016/S0021-9673(00)80441-0 . [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]

Gautzsch and Zinn, 1996
Gautzsch, R.; Zinn, P., Use of incremental models to estimate the retention indexes of aromatic compounds, Chromatographia, 1996, 43, 3/4, 163-176, https://doi.org/10.1007/BF02292946 . [all data]

Coen, Engel, et al., 1995
Coen, M.; Engel, R.; Nahrstedt, A., Chavicol β-D-glucoside, a phenylpropanoid heteroside, benzyl-β-D-glucoside and glycosidically bound volatiles from subspecies of Cedronella canariensis, Phytochemistry, 1995, 40, 1, 149-155, https://doi.org/10.1016/0031-9422(95)00241-X . [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]

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]

Knoppel, de Bortoli, et al., 1983
Knoppel, H.; de Bortoli, M.; Peil, A.; Vissers, H., Reproducibility of Temperature-Programmed Gas Chromatographic Retention Indices with Non-Polar Glass Capillary Columns, J. Chromatogr., 1983, 279, 483-492, https://doi.org/10.1016/S0021-9673(01)93649-0 . [all data]

Knoppel, de Bortoli, et al., 1982
Knoppel, H.; de Bortoli, M.; Peil, A.; Schauenburg, H.; Vissers, H., The determination of linear PTGC retention indices for use in environmental organics analysis, Comm. Eur. Communities, Rep. EUR, 1982, 99-109. [all data]

Varlet, Serot, et al., 2007
Varlet, V.; Serot, T.; Cardinal, M.; Knockaert, C.; Prost, C., Olfactometric Determination of the Most Potent Odor-Active Compounds in Salmon Muscle (Salmo salar) Smoked by Using Four Smoke Generation Techniques, J. Agric. Food Chem., 2007, 55, 11, 4518-4525, https://doi.org/10.1021/jf063468f . [all data]

Künzel, Breuer, et al., 2006
Künzel, H.; Breuer, K.; Mayer, F.; Sedlbauer, K., Luftqualität und Zufriedenheit - Verbesserung von Innenraumluftqualität und Nutzerzufriedenheit durch Materialgeruchsverbesserung, WKSB : Zeitschrift fur Warmeschutz, Kalteschutz, Schallschutz, Brandschutz, 2006, 57, 49-57. [all data]

Mjøs, Meier, et al., 2006
Mjøs, S.A.; Meier, S.; Boitsov, S., Alkylphenol retention indices, J. Chromatogr. A, 2006, 1123, 1, 98-105, https://doi.org/10.1016/j.chroma.2006.05.002 . [all data]

Varlet V., Knockaert C., et al., 2006
Varlet V.; Knockaert C.; Prost C.; Serot T., Comparison of odor-active volatile compounds of fresh and smoked salmon, J. Agric. Food Chem., 2006, 54, 9, 3391-3401, https://doi.org/10.1021/jf053001p . [all data]

Chung, Yung, et al., 2001
Chung, H.Y.; Yung, I.K.S.; Kim, J.-S., Comparison of volatile components in dried scallops (Chlamys farreri and Patinopecten yessoensis) prepared by boiling and steaming methods, J. Agric. Food Chem., 2001, 49, 1, 192-202, https://doi.org/10.1021/jf000692a . [all data]

Berezkin, Korolev, et al., 1998
Berezkin, V.G.; Korolev, A.A.; Malyukova, I.V., Dependence of the relative retention of compounds on the average pressure of helium as a carrier gas in capillary GLC, Russ. Chem. Bull. (Engl. Transl.), 1998, 47, 2, 307-309, https://doi.org/10.1007/BF02498955 . [all data]

Gruzdev, Kuzivanov, et al., 2012
Gruzdev, I.V.; Kuzivanov, I.M.; Zenkevich, I.G.; Kondratenok, B.M., Gas-chromatographic identification of products formed in iodination of methyl phenols by retention indices, Rus. J. Appl. Chem., 2012, 85, 9, 1355-1365, https://doi.org/10.1134/S1070427212090108 . [all data]

Gruzdev, Kuzivanov, et al., 2012, 2
Gruzdev, I.V.; Kuzivanov, I.M.; Zenkevich, I.G.; Kondratenok, B.M., Gas chromatographic determination of methylsubstituted phenols in aqueous media with preliminary iodination, Rus. J. Anal. Chem., 2012, 68, 2, 175-183. [all data]

Souza, Re-Poppi, et al., 2012
Souza, J.B.G.; Re-Poppi, N.; Raposo, J.L.(Jr)., Characterization of pyroligneous acid used in agriculture by gas chromatography - mass spectrometry (in press), J. Braz. Chem. Soc., 2012, 00, 00, 1-8. [all data]

Czerny, Brueckner, et al., 2011
Czerny, M.; Brueckner, R.; Kirchoff, E.; Schmitt, R.; Buettner, A., The influence of molecular structure on odor qualities and odor detection thresholds of volatile alkylated phenols, Chem. Senses, 2011, 1-15, retrieved from http://chemie.oxfordjournals.org. [all data]

Health Safety Executive, 2000
Health Safety Executive, MDHS 96 Volatile organic compounds in air - Laboratory method using pumed solid sorbent tubes, solvent desorption and gas chromatography in Methods for the Determination of Hazardous Substances (MDHS) guidance, Crown, Colegate, Norwich, 2000, 1-24, retrieved from http://www.hse.gov.uk/pubns/mdhs/pdfs/mdhs96.pdf. [all data]

Kim, Kim, et al., 1993
Kim, K.-R.; Kim, J.-H.; Park, H.-K.; Oh, C.-H., Dual capillary column system for the qualitative gas chromatography: 2. Comparison between splitless and on-column injection modes, Bull. Korean Chem. Soc., 1993, 14, 2, 250-255. [all data]

Okumura, 1991
Okumura, T., retention indices of environmental chemicals on methyl silicone capillary column, Journal of Environmental Chemistry (Japan), 1991, 1, 2, 333-358, https://doi.org/10.5985/jec.1.333 . [all data]

Vinogradov, 2004
Vinogradov, B.A., Production, composition, properties and application of essential oils, 2004, retrieved from http://viness.narod.ru. [all data]

Soderstrom, White, et al., 2001
Soderstrom, M.; White, E.; Abis, L.; Sliwakowski, M., Summary report of the eight meeting of the validation group for the updating of the central OPCW analytical database, 28-29 November 2000, CS-2001-2242, Verification Division S/239/2001, 2001, 14. [all data]

Peterson, 1992
Peterson, K.L., Counter-Propagation Neural Networks in the Modeling and Prediction of Kovats Indices for Substituted Phenols, Anal. Chem., 1992, 64, 4, 379-386, https://doi.org/10.1021/ac00028a011 . [all data]

Geldon, 1989
Geldon, A.L., Ground Water Hydrology of the Central Raton Basin, Colorado and New Mexico, US Geological Survey, US Government Printing Office, 1989, 104. [all data]

Waggott and Davies, 1984
Waggott, A.; Davies, I.W., Identification of organic pollutants using linear temperature programmed retention indices (LTPRIs) - Part II, 1984, retrieved from http://dwi.defra.gov.uk/research/completed-research/reports/dwi0383.pdf. [all data]

Peng, Yang, et al., 1991
Peng, C.T.; Yang, Z.C.; Ding, S.F., Prediction of rentention idexes. II. Structure-retention index relationship on polar columns, J. Chromatogr., 1991, 586, 1, 85-112, https://doi.org/10.1016/0021-9673(91)80028-F . [all data]

Williams and Horne, 1995
Williams, P.T.; Horne, P.A., Analysis of aromatic hydrocarbons in pyrolytic oil derived from biomass, J. Anal. Appl. Pyrolysis, 1995, 31, 15-37, https://doi.org/10.1016/0165-2370(94)00814-H . [all data]

Donnelly, Abdel-Hamid, et al., 1993
Donnelly, J.R.; Abdel-Hamid, M.S.; Jeter, J.L.; Gurka, D.F., Application of gas chromatographic retention properties to the identification of environmental contaminants, J. Chromatogr., 1993, 642, 1-2, 409-415, https://doi.org/10.1016/0021-9673(93)80106-I . [all data]

Eckel, Ross, et al., 1993
Eckel, W.P.; Ross, B.; Isensee, R.K., Pentobarbital found in ground water, Ground Water, 1993, 31, 5, 801-804, https://doi.org/10.1111/j.1745-6584.1993.tb00853.x . [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Phase change data, Gas phase ion energetics data, IR Spectrum, Gas Chromatography, References

• Symbols used in this document:
  

  Cp,gas	Constant pressure heat capacity of gas
  Tboil	Boiling point
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔsubH	Enthalpy of sublimation
  ΔsubH°	Enthalpy of sublimation at standard conditions
  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.