Benzo[a]pyrene

• Formula: C₂₀H₁₂
• Molecular weight: 252.3093
• IUPAC Standard InChI: InChI=1S/C20H12/c1-2-7-17-15(4-1)12-16-9-8-13-5-3-6-14-10-11-18(17)20(16)19(13)14/h1-12H Copy

  
• IUPAC Standard InChIKey: FMMWHPNWAFZXNH-UHFFFAOYSA-N Copy
• CAS Registry Number: 50-32-8
• 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: Benz[a]pyrene; 1,2-Benzpyrene; 3,4-Benzopyrene; 3,4-Benzpyrene; 3,4-Benz[a]pyrene; 6,7-Benzopyrene; Benzo[d,e,f]chrysene; B(a)P; BP; 3,4-Benzopirene; 3,4-Benzpyren; 3,4-BP; Rcra waste number U022; Benzopyrene; 4,5-Benzpyrene; NSC 21914; Benzo[α]pyrene
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Gas phase ion energetics data
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Phase change data
  • Henry's Law data
  • Mass spectrum (electron ionization)
• Data at other public NIST sites:
  • NIST Polycyclic Aromatic Hydrocarbon Structure Index
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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 by: Glushko Thermocenter, Russian Academy of Sciences, Moscow

Constant pressure heat capacity of gas

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:
L - Sharon G. Lias

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

Electron affinity determinations

Ionization energy determinations

Gas Chromatography

Go To: Top, Gas phase 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

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

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

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Normal alkane RI, non-polar column, temperature ramp

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Lee's RI, non-polar column, isothermal

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

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

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References

Go To: Top, Gas phase thermochemistry 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.

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Dorofeeva O.V., Thermodynamic Properties of Polycyclic Aromatic Hydrocarbons in the Gaseous Phase. Institute for High Temperatures, USSR Academy of Sciences, Preprint No.1-238 (in Russian), Moscow, 1988. [all data]

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Akiyama, I.; Li, K.C.; LeBreton, P.R.; Fu, P.P.; Harvey, R.G., Ultraviolet photoelectron studies of polycyclic aromatic hydrocarbons. The ground-state electronic structure of aryloxiranes and metabolites of benzo[a]pyrene, J. Phys. Chem., 1979, 83, 2997. [all data]

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Wang, Jia, et al., 2000
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Chen, J., GC and GC/MS methods for the analysis of polycyclic aromatic hydrocarbon (PAH) in sediment of the grand canal of China, Toxicol. Environ. Chem., 1996, 54, 1-4, 69-73, https://doi.org/10.1080/02772249609358297 . [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]

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Shaogang, C.; Xiaobai, X., System for calculating the linear temperature-programmed retention indices of polycylic aromatic compounds, J. Hi. Res. Chromatogr., 1994, 17, 5, 339-342, https://doi.org/10.1002/jhrc.1240170511 . [all data]

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Knobloch, T.; Engewald, W., Identification of some polar polycyclic compounds in emissions from brown-coal-fired residential stoves, J. Hi. Res. Chromatogr., 1993, 16, 4, 239-242, https://doi.org/10.1002/jhrc.1240160407 . [all data]

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Aceves, M.; Grimalt, J.O., Gas chromatographic screening of organic compounds in urban aerosols. Selectivity effects in semi-polar columns, J. Chromatogr., 1992, 607, 2, 261-270, https://doi.org/10.1016/0021-9673(92)87084-L . [all data]

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Guillén, M.D.; Blanco, J.; Bermejo, J.; Blanco, C.G., Temperature programmed retention indices of some PAHs on Capillary columns coated with OV-1701 and SE-54, J. Hi. Res. Chromatogr., 1989, 12, 8, 552-554, https://doi.org/10.1002/jhrc.1240120816 . [all data]

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Notes

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

• Symbols used in this document:
  

  Cp,gas	Constant pressure heat capacity of gas
  EA	Electron affinity
  IE (evaluated)	Recommended ionization energy

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