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Tetraethyllead (commonly styled tetraethyl lead), abbreviated TEL, is an organolead compound with the formula Pb(C 2 H 5) 4.It was widely used as a fuel additive for much of the 20th century, first being mixed with gasoline beginning in the 1920s.
Tetraethyl lead was largely replaced in the US with methyl tert-butyl ether starting in 1979. MTBE is a toxic water pollutant, and a series of groundwater contamination scandals starting in the 90's prompted the EPA to begin phasing MTBE out in 2000.
Tetraethyllead was supplied for blending with raw gasoline in the form of "Ethyl Fluid", which blended tetraethyllead with the lead scavengers 1,2-dibromoethane and 1,2-dichloroethane. Ethyl fluid contained a dye which would distinguish treated gasoline from untreated gasoline and discourage the diversion of gasoline for other purposes, such as ...
Thomas Midgley Jr. (May 18, 1889 – November 2, 1944) was an American mechanical and chemical engineer.He played a major role in developing leaded gasoline (tetraethyl lead) and some of the first chlorofluorocarbons (CFCs), better known in the United States by the brand name Freon; both products were later banned from common use due to their harmful impact on human health and the environment.
Robert Arthur Kehoe (/ ˈ k iː h oʊ /; November 18, 1893 – November 24, 1992) was an American toxicologist and a dominant figure in occupational health. [1] [2] Working on behalf of the lead industry (including the manufacturing of leaded gasoline and lead-acid batteries), Kehoe was the most powerful medically-trained proponent for the use of tetraethyllead as an additive in gasoline.
Surprising Lead-Tainted Foods. Lead, a naturally occurring toxic element found in the earth’s soil, can have serious health consequences with even minimal exposure.
Unlike motor gasoline, which has been formulated without lead since the 1970s to allow the use of catalytic converters for pollution reduction, the most commonly used grades of avgas still contain tetraethyl lead, a toxic lead-containing additive used to aid in lubrication of the engine, increase octane rating, and prevent engine knocking ...
"Lead can be damaging to the developing brain," Calello says. "While adults can have effects from excess lead exposure as well, the effects are more severe in children and occur at lower levels."