Naphthalene

• Formula: C₁₀H₈
• Molecular weight: 128.1705
• IUPAC Standard InChI: InChI=1S/C10H8/c1-2-6-10-8-4-3-7-9(10)5-1/h1-8H Copy

  
• IUPAC Standard InChIKey: UFWIBTONFRDIAS-UHFFFAOYSA-N Copy
• CAS Registry Number: 91-20-3
• 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.
• Isotopologues:
  • Naphthalene-D8
• Other names: Albocarbon; Dezodorator; Moth flakes; Naphthalin; Naphthaline; Naphthene; Tar camphor; White tar; Camphor tar; Moth balls; Naftalen; NCI-C52904; Mighty 150; Mighty RD1; Rcra waste number U165; UN 1334; UN 2304; NSC 37565
• 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
  • Henry's Law data
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • UV/Visible spectrum
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
  • NIST Polycyclic Aromatic Hydrocarbon Structure Index
• Options:
  • Switch to calorie-based units

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Gas phase thermochemistry data

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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

Constant pressure heat capacity of gas

Condensed phase thermochemistry data

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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:
DH - Eugene S. Domalski and Elizabeth D. Hearing
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Constant pressure heat capacity of liquid

Constant pressure heat capacity of solid

Phase change data

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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
DH - Eugene S. Domalski and Elizabeth D. Hearing
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Enthalpy of vaporization

Entropy of vaporization

Antoine Equation Parameters

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

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Enthalpy of sublimation

Entropy of sublimation

Enthalpy of fusion

Entropy of fusion

Enthalpy of phase transition

Entropy of phase transition

Reaction thermochemistry data

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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

C₁₀H₇^- +  =

By formula: C₁₀H₇^- + H⁺ = C₁₀H₈

C₆H₇N⁺ +  = (C₆H₇N⁺ • )

By formula: C₆H₇N⁺ + C₁₀H₈ = (C₆H₇N⁺ • C₁₀H₈)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

C₁₂H₈⁺ +  = (C₁₂H₈⁺ • )

By formula: C₁₂H₈⁺ + C₁₀H₈ = (C₁₂H₈⁺ • C₁₀H₈)

Bond type: Charge transfer bond (positive ion)

C₁₂H₉⁺ +  = (C₁₂H₉⁺ • )

By formula: C₁₂H₉⁺ + C₁₀H₈ = (C₁₂H₉⁺ • C₁₀H₈)

Bond type: Charge transfer bond (positive ion)

2 +  =

By formula: 2H₂ + C₁₀H₈ = C₁₀H₁₂

=

By formula: C₁₀H₈ = C₁₀H₈

C₁₀H₈⁺ +  = (C₁₀H₈⁺ • )

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

Bond type: Charge transfer bond (positive ion)

C₁₀H₇^- +  =

By formula: C₁₀H₇^- + H⁺ = C₁₀H₈

H₄O₄^- +  + 2 = C₁₀H₁₂O₄^-

By formula: H₄O₄^- + C₁₀H₈ + 2H₂O = C₁₀H₁₂O₄^-

H₂O₃^- +  +  = C₁₀H₁₀O₃^-

By formula: H₂O₃^- + C₁₀H₈ + H₂O = C₁₀H₁₀O₃^-

C₁₀H₉⁺ +  = (C₁₀H₉⁺ • )

By formula: C₁₀H₉⁺ + C₁₀H₈ = (C₁₀H₉⁺ • C₁₀H₈)

 +  = C₁₀H₈O₂^-

By formula: O₂^- + C₁₀H₈ = C₁₀H₈O₂^-

 +  = C₁₀H₈NO^-

By formula: NO^- + C₁₀H₈ = C₁₀H₈NO^-

C₁₀H₈NO^- + 2 = C₂₀H₁₆NO^-

By formula: C₁₀H₈NO^- + 2C₁₀H₈ = C₂₀H₁₆NO^-

5 +  =

By formula: 5H₂ + C₁₀H₈ = C₁₀H₁₈

Henry's Law data

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

Data compiled by: Rolf Sander

Henry's Law constant (water solution)

k_H(T) = k°_H exp(d(ln(k_H))/d(1/T) ((1/T) - 1/(298.15 K)))
k°_H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(k_H))/d(1/T) = Temperature dependence constant (K)

Gas phase ion energetics data

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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)
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
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 C₁₀H₈⁺ (ion structure unspecified)

Electron affinity determinations

Proton affinity at 298K

Gas basicity at 298K

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₁₀H₇^- +  =

By formula: C₁₀H₇^- + H⁺ = C₁₀H₈

C₁₀H₇^- +  =

By formula: C₁₀H₇^- + H⁺ = C₁₀H₈

Ion clustering data

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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:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
B - John E. Bartmess

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

C₆H₇N⁺ +  = (C₆H₇N⁺ • )

By formula: C₆H₇N⁺ + C₁₀H₈ = (C₆H₇N⁺ • C₁₀H₈)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

C₁₀H₈⁺ +  = (C₁₀H₈⁺ • )

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

Bond type: Charge transfer bond (positive ion)

C₁₀H₈NO^- + 2 = C₂₀H₁₆NO^-

By formula: C₁₀H₈NO^- + 2C₁₀H₈ = C₂₀H₁₆NO^-

C₁₀H₉⁺ +  = (C₁₀H₉⁺ • )

By formula: C₁₀H₉⁺ + C₁₀H₈ = (C₁₀H₉⁺ • C₁₀H₈)

C₁₂H₈⁺ +  = (C₁₂H₈⁺ • )

By formula: C₁₂H₈⁺ + C₁₀H₈ = (C₁₂H₈⁺ • C₁₀H₈)

Bond type: Charge transfer bond (positive ion)

C₁₂H₉⁺ +  = (C₁₂H₉⁺ • )

By formula: C₁₂H₉⁺ + C₁₀H₈ = (C₁₂H₉⁺ • C₁₀H₈)

Bond type: Charge transfer bond (positive ion)

H₂O₃^- +  +  = C₁₀H₁₀O₃^-

By formula: H₂O₃^- + C₁₀H₈ + H₂O = C₁₀H₁₀O₃^-

H₄O₄^- +  + 2 = C₁₀H₁₂O₄^-

By formula: H₄O₄^- + C₁₀H₈ + 2H₂O = C₁₀H₁₂O₄^-

 +  = C₁₀H₈NO^-

By formula: NO^- + C₁₀H₈ = C₁₀H₈NO^-

 +  = C₁₀H₈O₂^-

By formula: O₂^- + C₁₀H₈ = C₁₀H₈O₂^-

IR Spectrum

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Data compiled by: Coblentz Society, Inc.

• SOLUTION (10% CCl4 FOR 3800-1300, 11% CS2 FOR 1300-650, AND 10% CCl4 FOR 650-250); PERKIN-ELMER 521 (GRATING); 2 cm^-1 resolution
• VAPOR (1.0 MICROLITER AT 245 C); NICOLET FTIR; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 CM^-1 cm^-1 resolution

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

• gas

Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering 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

Spectrum

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Additional Data

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Notes

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

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Notes

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• Symbols used in this document:
  

  AE	Appearance energy
  Cp,gas	Constant pressure heat capacity of gas
  Cp,liquid	Constant pressure heat capacity of liquid
  Cp,solid	Constant pressure heat capacity of solid
  EA	Electron affinity
  IE (evaluated)	Recommended ionization energy
  Pc	Critical pressure
  S°liquid	Entropy of liquid at standard conditions
  S°solid,1 bar	Entropy of solid at standard conditions (1 bar)
  T	Temperature
  Tboil	Boiling point
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  Ttriple	Triple point temperature
  Vc	Critical volume
  d(ln(kH))/d(1/T)	Temperature dependence parameter for Henry's Law constant
  k°H	Henry's Law constant at 298.15K
  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
  ΔsubS	Entropy of sublimation
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions
  ΔvapS	Entropy of vaporization
  ρc	Critical density

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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