Chemistry:Dibenz(a,j)anthracene
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| Preferred IUPAC name
Benzo[m]tetraphene | |
| Other names
1,2:7,8-Dibenzanthracene[1]
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3D model (JSmol)
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| Properties | |
| C22H14 | |
| Molar mass | 278.3466 |
| Appearance | colorless crystals |
| Melting point | 196 °C (385 °F; 469 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Dibenz[a,j]anthracene or Benzo[m]tetraphene or 1,2:7,8-Dibenzanthracene is an organic compound with the chemical formula C22H14. It belongs to the class of polycyclic aromatic hydrocarbons (PAHs) and is formed whenever there is incomplete combustion of organic matter.
Occurrence
Dibenz(a,j)anthracene is a memebr of the class of polycyclic aromatic hydrocarbons (PAHs). It is generated whenever organic matter or fuel is incompletely burnt or combusted. Examples include industrial emissions such as coke oven operations in the coal and steel industry, coal tar distillation, or within engine exhaust. On a personal level it is produced with high temperature cooking like frying, grilling, broiling, roasting and baking, but also when cigarette smoking or marijuana smoking.[2]
In space
In February 2014, NASA announced a greatly upgraded database for tracking polycyclic aromatic hydrocarbons (PAHs), including dibenz[a,j]anthracene, in the universe.[3] According to scientists, more than 20% of the carbon in the universe may be associated with PAHs, possible starting materials for the formation of life. PAHs seem to have been formed shortly after the Big Bang, are widespread throughout the universe, and are associated with new stars and exoplanets.[4]
See also
References
- ↑ National Institute of Standards and Technology (NIST) (nd). "Dibenz[a,janthracene"]. https://webbook.nist.gov/cgi/cbook.cgi?ID=224-41-9.
- ↑ California OEHHA. "Dibenz[a,janthracene"]. https://oehha.ca.gov/chemicals/dibenzajanthracene.
- ↑ "NASA Ames PAH IR Spectroscopic Database". nd. https://www.astrochemistry.org/pahdb/theoretical/3.20/default/view.
- ↑ Hoover, Rachel (February 21, 2014). "Need to Track Organic Nano-Particles Across the Universe? NASA's Got an App for That". NASA. http://www.nasa.gov/ames/need-to-track-organic-nano-particles-across-the-universe-nasas-got-an-app-for-that/. Retrieved February 22, 2014.
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