Fluorene

• Formula: C₁₃H₁₀
• Molecular weight: 166.2185
• IUPAC Standard InChI: InChI=1S/C13H10/c1-3-7-12-10(5-1)9-11-6-2-4-8-13(11)12/h1-8H,9H2 Copy

  
• IUPAC Standard InChIKey: NIHNNTQXNPWCJQ-UHFFFAOYSA-N Copy
• CAS Registry Number: 86-73-7
• 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: 9H-Fluorene; o-Biphenylenemethane; Diphenylenemethane; Methane, diphenylene-; 2,2'-Methylenebiphenyl; 2,3-Benzindene; o-Biphenylmethane
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
  • References
  • Notes
• Other data available:
  • Henry's Law data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
  • NIST Polycyclic Aromatic Hydrocarbon Structure Index
• 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, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering 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 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

Condensed phase thermochemistry data

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

Constant pressure heat capacity of solid

Phase change data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering 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 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
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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

Temperature of phase transition

Enthalpy of phase transition

Entropy of phase transition

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Ion clustering 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 as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

C₁₃H₉^- +  =

By formula: C₁₃H₉^- + H⁺ = C₁₃H₁₀

C₁₀H₈⁺ +  = (C₁₀H₈⁺ • )

By formula: C₁₀H₈⁺ + C₁₃H₁₀ = (C₁₀H₈⁺ • C₁₃H₁₀)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

C₁₂H₈⁺ +  = (C₁₂H₈⁺ • )

By formula: C₁₂H₈⁺ + C₁₃H₁₀ = (C₁₂H₈⁺ • C₁₃H₁₀)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

C₁₃H₁₀⁺ +  = (C₁₃H₁₀⁺ • )

By formula: C₁₃H₁₀⁺ + C₁₃H₁₀ = (C₁₃H₁₀⁺ • C₁₃H₁₀)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

C₁₃H₁₁⁺ +  = (C₁₃H₁₁⁺ • )

By formula: C₁₃H₁₁⁺ + C₁₃H₁₀ = (C₁₃H₁₁⁺ • C₁₃H₁₀)

3 +  =

By formula: 3H₂ + C₁₃H₁₀ = C₁₃H₁₆

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Ion clustering data, References, Notes

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

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
MM - Michael M. Meot-Ner (Mautner)
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C₁₃H₁₀⁺ (ion structure unspecified)

Electron affinity determinations

Proton affinity at 298K

Gas basicity at 298K

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₁₃H₉^- +  =

By formula: C₁₃H₉^- + H⁺ = C₁₃H₁₀

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry 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: Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

C₁₀H₈⁺ +  = (C₁₀H₈⁺ • )

By formula: C₁₀H₈⁺ + C₁₃H₁₀ = (C₁₀H₈⁺ • C₁₃H₁₀)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

C₁₂H₈⁺ +  = (C₁₂H₈⁺ • )

By formula: C₁₂H₈⁺ + C₁₃H₁₀ = (C₁₂H₈⁺ • C₁₃H₁₀)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

C₁₃H₁₀⁺ +  = (C₁₃H₁₀⁺ • )

By formula: C₁₃H₁₀⁺ + C₁₃H₁₀ = (C₁₃H₁₀⁺ • C₁₃H₁₀)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

C₁₃H₁₁⁺ +  = (C₁₃H₁₁⁺ • )

By formula: C₁₃H₁₁⁺ + C₁₃H₁₀ = (C₁₃H₁₁⁺ • C₁₃H₁₀)

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Notes

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

Roux, Temprado, et al., 2008
Roux, M.V.; Temprado, M.; Chickos, J.S.; Nagano, Y., Critically Evaluated Thermochemical Properties of Polycyclic Aromatic Hydrocarbons, J. Phys. Chem. Ref. Data, 2008, 37, 4, 1855-1996. [all data]

Rakus, Verevkin, et al., 1994
Rakus, K.; Verevkin, S.P.; Schatzer, J.; Beckhaus, H.-D.; Ruchardt, C., Thermochemistry and thermal decomposition of 9,9'-bifluorenyl and 9,9'-dimethyl-9,9'-bifluorenyl - the stabilization energy of 9-fluorenyl radicals, Chem. Ber., 1994, 127, 1095-1103. [all data]

Sabbah, 1991
Sabbah, R., Thermodynamic study of fluorene and dibenzofuran, Bull. Soc. Chim. Fr., 1991, 128, 350. [all data]

Sabbah and Antipine, 1987
Sabbah, R.; Antipine, I., Thermodynamic study on four polycycles. Relationship between their energy values and their structure, Bull. Soc. Chim. Fr., 1987, 392-400. [all data]

Dorofeeva O.V., 1989
Dorofeeva O.V., Thermodynamic Properties of Gaseous Polycyclic Aromatic Hydrocarbons Containing Five-Membered Rings. Institute for High Temperatures, USSR Academy of Sciences, Preprint No.1-263 (in Russian), Moscow, 1989. [all data]

Frenkel M., 1994
Frenkel M., Thermodynamics of Organic Compounds in the Gas State, Vol. I, II, Thermodynamics Research Center, College Station, Texas, 1994, 1994. [all data]

Finke, Messerly, et al., 1977
Finke, H.L.; Messerly, J.F.; Lee, S.H.; Osborn, A.G.; Douslin, D.R., Comprehensive thermodynamic studies of seven aromatic hydrocarbons, J. Chem. Thermodyn., 1977, 9, 937-956. [all data]

Eibert, 1944
Eibert, J., Thesis Washington University (St. Louis), 1944. [all data]

Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc., Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]

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]

Lecat, 1943
Lecat, M., Azeotropes of Ethyl Urethane and other Azeotropes, C. R. Hebd. Seances Acad. Sci., 1943, 217, 273. [all data]

Finke, Messerly, et al., 1977, 2
Finke, H.L.; Messerly, J.F.; Lee, S.H.; Osborn, A.G.; Douslin, D.R., Comprehensive thermodynamic studies of seven aromatic hydrocarbons, J. Chem. Thermodyn., 1977, 9, 937. [all data]

Osborn and Douslin, 1975
Osborn, A.G.; Douslin, D.R., Vapor Pressure and Derived Enthalpies of Vaporization for Some Condensed Ring Hydrocarbons, J. Chem. Eng. Data, 1975, 20, 229-31. [all data]

Hanshaw, Nutt, et al., 2008
Hanshaw, William; Nutt, Marjorie; Chickos, James S., Hypothetical Thermodynamic Properties. Subcooled Vaporization Enthalpies and Vapor Pressures of Polyaromatic Hydrocarbons, J. Chem. Eng. Data, 2008, 53, 8, 1903-1913, https://doi.org/10.1021/je800300x . [all data]

Haftka, Parsons, et al., 2006
Haftka, Joris J.H.; Parsons, John R.; Govers, Harrie A.J., Supercooled liquid vapour pressures and related thermodynamic properties of polycyclic aromatic hydrocarbons determined by gas chromatography, Journal of Chromatography A, 2006, 1135, 1, 91-100, https://doi.org/10.1016/j.chroma.2006.09.050 . [all data]

Chickos, Hesse, et al., 1998
Chickos, James; Hesse, Donald; Hosseini, Sarah; Nichols, Gary; Webb, Paul, Sublimation enthalpies at 298.15K using correlation gas chromatography and differential scanning calorimetry measurements, Thermochimica Acta, 1998, 313, 2, 101-110, https://doi.org/10.1016/S0040-6031(97)00432-2 . [all data]

Chickos, Hosseini, et al., 1995
Chickos, James S.; Hosseini, Sarah; Hesse, Donald G., Determination of vaporization enthalpies of simple organic molecules by correlations of changes in gas chromatographic net retention times, Thermochimica Acta, 1995, 249, 41-62, https://doi.org/10.1016/0040-6031(95)90670-3 . [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]

Sasse, Jose, et al., 1988
Sasse, Karim; Jose, Jacques; Merlin, Jean-Claude, A static apparatus for measurement of low vapor pressures. Experimental results on high molecular-weight hydrocarbons, Fluid Phase Equilibria, 1988, 42, 287-304, https://doi.org/10.1016/0378-3812(88)80065-7 . [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]

Mortimer and Murphy, 1923
Mortimer, F. Spencer.; Murphy, Ray v., The Vapor Pressures of Some Substances Found in Coal Tar., Ind. Eng. Chem., 1923, 15, 11, 1140-1142, https://doi.org/10.1021/ie50167a012 . [all data]

Nass, Lenoir, et al., 1995
Nass, Karen; Lenoir, Dieter; Kettrup, Antonius, Calculation of the Thermodynamic Properties of Polycyclic Aromatic Hydrocarbons by an Incremental Procedure, Angew. Chem. Int. Ed. Engl., 1995, 34, 16, 1735-1736, https://doi.org/10.1002/anie.199517351 . [all data]

Hansen and Eckert, 1986
Hansen, Philip C.; Eckert, Charles A., An improved transpiration method for the measurement of very low vapor pressures, J. Chem. Eng. Data, 1986, 31, 1, 1-3, https://doi.org/10.1021/je00043a001 . [all data]

SATO, INOMATA, et al., 1986
SATO, NOBUYUKI; INOMATA, HIROSHI; ARAI, KUNIO; SAITO, SHOZABURO, Measurement of vapor pressures for coal-related aromatic compounds by gas saturation method., J. Chem. Eng. Japan / JCEJ, 1986, 19, 2, 145-147, https://doi.org/10.1252/jcej.19.145 . [all data]

Sonnefeld, Zoller, et al., 1983
Sonnefeld, W.J.; Zoller, W.H.; May, W.E., Dynamic coupled-column liquid-chromatographic determination of ambient-temperature vapor pressures of polynuclear aromatic hydrocarbons, Anal. Chem., 1983, 55, 2, 275-280, https://doi.org/10.1021/ac00253a022 . [all data]

Osborn and Douslin, 1975, 2
Osborn, Ann G.; Douslin, Donald R., Vapor pressures and derived enthalpies of vaporization for some condensed-ring hydrocarbons, J. Chem. Eng. Data, 1975, 20, 3, 229-231, https://doi.org/10.1021/je60066a022 . [all data]

Budurov, 1960
Budurov, S., Izv. Khim. Inst. Bulg. Akad. Nauk, 1960, 7, 281. [all data]

Bradley and Cleasby, 1953
Bradley, R.S.; Cleasby, T.G., 346. The vapour pressure and lattice energy of hydrogen-bonded crystals. Part I. Oxamide, oxamic acid, and rubeanic acid, J. Chem. Soc., 1953, 1681, https://doi.org/10.1039/jr9530001681 . [all data]

Jones, 1960
Jones, A.H., Sublimation Pressure Data for Organic Compounds., J. Chem. Eng. Data, 1960, 5, 2, 196-200, https://doi.org/10.1021/je60006a019 . [all data]

Bradley and Cleasby, 1953, 2
Bradley, R.S.; Cleasby, T.G., 349. The vapour pressure and lattice energy of some aromatic ring compounds, J. Chem. Soc., 1953, 1690, https://doi.org/10.1039/jr9530001690 . [all data]

Bradley and Cleasby, 1953, 3
Bradley, R.S.; Cleasby, T.G., The vapour pressure and lattice energy of some aromatic ring compounds, J. Am. Chem. Soc., 1953, 1690-16. [all data]

Lisicki and Jamróz, 2000
Lisicki, Zygmunt; Jamróz, Malgorzata E., (Solid + liquid) equilibria in (polynuclear aromatic+ tertiary amide) systems, The Journal of Chemical Thermodynamics, 2000, 32, 10, 1335-1353, https://doi.org/10.1006/jcht.2000.0685 . [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Römer, Janaway, et al., 1997
Römer, B.; Janaway, G.; Brauman, J.I., Cyclopentadienyl, Indenyl, and Fluorenyl Anions: Gas-Phase and Solvation Energy Contributions to Electron Detachment Energies, J. Am. Chem. Soc., 1997, 119, 9, 2249, https://doi.org/10.1021/ja961947x . [all data]

Taft and Bordwell, 1988
Taft, R.W.; Bordwell, F.G., Structural and Solvent Effects Evaluated from Acidities Measured in Dimethyl Sulfoxide and in the Gas Phase, Acc. Chem. Res., 1988, 21, 12, 463, https://doi.org/10.1021/ar00156a005 . [all data]

Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P., Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A), Can. J. Chem., 1978, 56, 1. [all data]

Meot-Ner (Mautner), 1980
Meot-Ner (Mautner), M., Dimer Cations of Polycyclic Aromatics: Experimental Bonding Energies and Resonance Stabilization, J. Phys. Chem., 1980, 84, 21, 2724, https://doi.org/10.1021/j100458a012 . [all data]

Frye and Weitkamp, 1969
Frye, C.G.; Weitkamp, A.W., Equilibrium hydrogenations of multi-ring aromatics, J. Chem. Eng. Data, 1969, 14, 372-376. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Wojnarovits and Foldiak, 1981
Wojnarovits, L.; Foldiak, G., Electron capture detection of aromatic hydrocarbons, J. Chromatogr. Sci., 1981, 206, 511. [all data]

Chen and Wentworth, 1989
Chen, E.C.M.; Wentworth, W.E., Experimental Determination of Electron Affinities of Organic Molecules, Mol. Cryst. Liq. Cryst., 1989, 171, 271. [all data]

Aue, Guidoni, et al., 2000
Aue, D.H.; Guidoni, M.; Betowski, L.D., Ab initio calculated gas-phase basicities of polynuclear aromatic hydrocarbons, Int. J. Mass Spectrom., 2000, 201, 283. [all data]

Mautner(Meot-Ner), 1980
Mautner(Meot-Ner), M., Ion thermochemistry of low volatility compounds in the gas phase. 3. Polycyclic aromatics: Ionization energies, proton, and hydrogen affinities. Extrapolations to graphite, J. Phys. Chem., 1980, 84, 2716. [all data]

Terlouw, Heerma, et al., 1974
Terlouw, J.K.; Heerma, W.; Frintrop, P.C.M.; Dijkstra, G.; Meinema, H.A., Electron-impact induced fragmentation of some heterocyclic-tin compounds, J. Organomet. Chem., 1974, 64, 205. [all data]

Potapov, Kardash, et al., 1972
Potapov, V.K.; Kardash, I.E.; Sorokin, V.V.; Sokolov, S.A.; Evlasheva, T.I., Photoionization of heteroaromatic compounds, Khim. Vys. Energ., 1972, 6, 392. [all data]

Dewar, Haselbach, et al., 1970
Dewar, M.J.S.; Haselbach, E.; Worley, S.D., Calculated and observed ionization potentials of unsaturated polycyclic hydrocarbons; calculated heats of formation by several semiempirical s.c.f. m.o. methods, Proc. Roy. Soc. (London), 1970, A315, 431. [all data]

Mukherjee, 1969
Mukherjee, T.K., Charge-transfer donor abilities of o,o'bridged biphenyls, J. Phys. Chem., 1969, 73, 3442. [all data]

Slifkin and Allison, 1967
Slifkin, M.A.; Allison, A.C., Measurement of ionization potentials from contact charge transfer spectra, Nature, 1967, 215, 949. [all data]

Ruscic, Kovac, et al., 1978
Ruscic, B.; Kovac, B.; Klasinc, L.; Gusten, H., Photoelectron spectroscopy of J. Heterocycl. Chem.. Fluorene analogues, Z. Naturforsch. A:, 1978, 33, 1006. [all data]

Maier and Turner, 1972
Maier, J.P.; Turner, D.W., Steric inhibition of resonance studied by molecular photoelectron spectroscopy. Part I. Biphenyls, Faraday Discuss. Chem. Soc., 1972, 54, 149. [all data]

Rapp, Staab, et al., 1970
Rapp, U.; Staab, H.A.; Wunsche, C., Skelettumlagerungen unter Elektronenbeschuss-IV: zur Struktur der C₁₃H₉- und C₁₂H₉N-Ionen bei Benzylidenaminobenztriazolen, Org. Mass Spectrom., 1970, 3, 45. [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, References

• Symbols used in this document:
  

  AE	Appearance energy
  Cp,gas	Constant pressure heat capacity of gas
  Cp,solid	Constant pressure heat capacity of solid
  EA	Electron affinity
  IE (evaluated)	Recommended ionization energy
  S°solid,1 bar	Entropy of solid at standard conditions (1 bar)
  T	Temperature
  Tboil	Boiling point
  Tfus	Fusion (melting) point
  Ttriple	Triple point temperature
  Ttrs	Temperature of phase transition
  ΔHtrs	Enthalpy of phase transition
  ΔStrs	Entropy of phase transition
  ΔcH°solid	Enthalpy of combustion of solid at standard conditions
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔfH°solid	Enthalpy of formation of solid at standard conditions
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions
  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.