User:Milton Beychok/Sandbox: Difference between revisions

Revision as of 17:17, 24 April 2009

Gasoline moved to Namespace as a developing article.

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 [[Gasoline]] moved to Namespace as a developing article.
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-{{main|Gasoline|Tetra-ethyl lead}}
-Tetra-ethyl lead, commonly referred to as TEL, is a viscous liquid with the chemical formula (CH<sub>3</sub>CH<sub>2</sub>)<sub>4</sub>Pb.  Once widely used (circa 1925 to 1990) to increase the [[octane rating]] of [[gasoline]] ([[petrol]]), TEL usage in gasoline has been largely phased out by most nations primarily because of the toxicity of the lead [[emission]]s from [[internal combustion engine]]s burning gasoline containing TEL. Another reason for discontinuing TEL usage was that it degraded the efficiency of the [[catalytic converter]]s installed in automotive vehicles to reduce their emissions of [[Air pollution|air pollutants]].