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Topic: Benzene

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  Benzene @ ColorFool.com (Color Fool)   (Site not responding. Last check: 2007-10-21)
Benzene is a colorless and flammable liquid with a sweet smell and a relatively high melting point.
Benzene is a natural constituent of crude oil, but it is usually synthesized from other compounds present in petroleum.
An often-repeated story claims that after years of studying carbon bonding, benzene and related molecules, he dreamt one night of the Ouroboros, a snake eating its own tail, and that upon waking he was inspired to deduce the ring structure of benzene.
www.colorfool.com /encyclopedia/Benzene/index.htm   (2511 words)

 benzene - HighBeam Encyclopedia   (Site not responding. Last check: 2007-10-21)
The simplest picture of the benzene molecule, proposed by the German chemist Friedrich Kekulé; (1865), is a hexagon of six carbon atoms joined by alternating single and double bonds and each bearing one hydrogen atom, symbolized by [symbol].
Benzene is the parent substance of the aromatic compounds, a large and important group of organic compounds.
Benzene and the other aromatic hydrocarbons are obtained for industrial purposes from the distillation of coal tar, a byproduct in the manufacture of coke, and from petroleum by special reforming methods.
encyclopedia.infonautics.com /html/b/benzen.asp   (366 words)

 MedlinePlus Medical Encyclopedia: Benzene ingestion
This is poisoning from swallowing, breathing in, or touching benzene.
Benzene is a clear liquid chemical that hasĀ a sweet smell.
People who are continously exposed to low-levels of benzene can also become sick.
www.nlm.nih.gov /medlineplus/ency/article/002720.htm   (470 words)

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