1-Methylnaphthalene

1-Methylnaphthalene[1]
Names
IUPAC name
1-Methylnaphthalene
Other names
α-methylnaphthalene
Identifiers
90-12-0 YesY
ChEBI CHEBI:50717 YesY
ChEMBL ChEMBL383808 YesY
ChemSpider 6736 YesY
EC Number 201-966-8
Jmol 3D model Interactive image
KEGG C14082 YesY
PubChem 7002
Properties
C11H10
Molar mass 142.20 g/mol
Appearance Liquid
Density 1.001 g/mL
Melting point −22 °C (−8 °F; 251 K)
Boiling point 240–243 °C (464–469 °F; 513–516 K)
Vapor pressure 4.91
Hazards
R-phrases R22 R42 R43
S-phrases S7 S36 S37 S39
Flash point 82 °C (180 °F; 355 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

1-Methylnaphthalene is a polycyclic aromatic hydrocarbon (PAH). It has a cetane number of zero, and was previously used as the lower reference for cetane number. However, due to the expense and handling difficulty of 1-methylnaphthalene, it was replaced in this capacity by isocetane, with a CN of 15.[2]

On February 22, 2014, NASA announced a greatly upgraded database[3][4] for detecting and monitoring PAHs, including 1-methylnaphthalene, 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

References

  1. ↑ 1-Methylnaphthalene at University of Oxford
  2. ↑ Cetane number
  3. 1 2 3 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'". Space.com. 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. Retrieved March 3, 2014.

External links


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