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Other names
Benzo[b]fluoranthene; Benzo[e]fluoranthene; 2,3-Benzofluoranthrene; benzo[e]acephenanthrylene; B(b)F; 2,3-Benzofluoranthene; 4,5-Benzofluoranthene; 2,3-Benzfluoranthene; 3,4-Benzfluoranthene; 3,4-Benzofluoranthene; Benz[b]fluoranthene[1]
3D model (JSmol)
Molar mass 252.32 g·mol−1
Appearance Off-white to tan powder[2]
Melting point 166 °C (331 °F; 439 K)[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Benz[e]acephenanthrylene is an organic compound with the chemical formula C20H12. It is a polycyclic aromatic hydrocarbon (PAH) made of four benzene rings around a 5-membered ring.

On February 22, 2014, NASA announced a greatly upgraded database[3][4] for detecting and monitoring polycyclic aromatic hydrocarbons (PAHs), including benz[e]acephenanthrylene (as benzo[b]fluoranthene, a synonym), in the universe. According to NASA scientists, over 20% of the carbon in the universe may be associated with PAHs, possible starting materials for the formation of life.[3] PAHs seem to have been formed shortly after the Big Bang, are abundant in the universe,[5][6][7] and are associated with new stars and exoplanets.[3]

See also[edit]


  1. ^ a b c d e Staff (2011). "Benz[e]acephenanthrylene". NIST. Retrieved March 5, 2014. 
  2. ^ a b c d e Staff (2014). "Benzo[e]acephenanthrylene". ChemSpider. Retrieved March 5, 2014. 
  3. ^ a b c Hoover, Rachel (February 21, 2014). "Need to Track Organic Nano-Particles Across the Universe? NASA's Got an App for That". NASA. Retrieved February 22, 2014. 
  4. ^ Staff (October 29, 2013). "PAH IR Spectral Database". NASA. Retrieved March 12, 2014. 
  5. ^ Carey, Bjorn (October 18, 2005). "Life's Building Blocks 'Abundant in Space'". Retrieved March 3, 2014. 
  6. ^ Hudgins, Douglas M.; Bauschlicher Jr, Charles W.; Allamandola, L. J. (October 10, 2005). "Variations in the Peak Position of the 6.2 μm Interstellar Emission Feature: A Tracer of N in the Interstellar Polycyclic Aromatic Hydrocarbon Population". Astrophysical Journal. 632: 316–332. doi:10.1086/432495. Retrieved March 3, 2014. 
  7. ^ Allamandola, Louis; et al. (April 13, 2011). "Cosmic Distribution of Chemical Complexity". NASA. Archived from the original on February 27, 2014. Retrieved March 3, 2014. 

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