tetraethyl lead

tet·ra·eth·yl lead

also tet·ra·eth·yl·lead T0131400 (tĕt′rə-ĕth′əl-lĕd′)n. A colorless, poisonous, oily liquid, C₈H₂₀Pb, comprised of four ethyl groups on each lead atom, used in gasoline for internal-combustion engines as an antiknock agent.

tetraethyl lead

(ˌtɛtrəˈiːθaɪl lɛd) or

tetraethyllead

n (Elements & Compounds) a colourless oily insoluble liquid formerly used in petrol to prevent knocking. Its use has been banned in most developed countries due to its toxicity. Formula: Pb(C2H5)4. Systematic name: lead tetraethyl Former names: tetramethyl lead or tetramethyllead

Thesaurus

Noun

tetraethyl lead - a clear oily poisonous liquid added to gasoline to prevent knockinglead tetraethylantiknock - any of various compounds that are added to gasoline to reduce engine knocking

tetraethyl lead

(tĕt'rəĕth`əl), (C₂H₅)₄Pb, viscous, colorless, poisonous liquid. It is an organometallic compound prepared by reacting ethyl chloride with a sodium-lead alloy. When added to gasoline, it improves the combustion characteristics (see octane numberoctane number,
figure of merit representing the resistance of gasoline to premature detonation when exposed to heat and pressure in the combustion chamber of an internal-combustion engine.
..... Click the link for more information. ). When tetraethyl lead burns in an engine, lead oxide is formed. Ethylene dibromide is usually also added to the gasoline; on burning, the resulting mixture forms products that react with the lead oxide to form lead bromide, a volatile compound that escapes from the engine with other exhausted products. Because the lead bromide is poisonous, lead-free gasolines are required in the United States. An additional reason for lead-free gas is that the lead in the exhaust pipe would poison the catalytic converter that is standard equipment for U.S. cars. Catalytic converters which serve to oxidize unburned hydrocarbons, carbon monoxide, and nitrogen oxides contain platinum group metals that are inactivated by lead.

tetraethyl lead

a colourless oily insoluble liquid used in petrol to prevent knocking. Formula: Pb(C₂H₅)₄

tetraethyl lead

tet·ra·eth·yl lead

tetraethyl lead

tetraethyllead

tetraethyl lead

tetraethyl lead

tetraethyl lead

tetraethyl lead

Synonyms for tetraethyl lead

noun a clear oily poisonous liquid added to gasoline to prevent knocking

Synonyms

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