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An antiknock agent is a gasoline additive used to reduce engine knocking and increase the fuel's octane rating by raising the temperature and pressure at which auto-ignition occurs.
As anti-knocking agent [ edit ] In the U.S. MTBE has been used in gasoline at low levels since 1979, replacing tetraethyllead (TEL) as an antiknock (octane rating) additive to prevent engine knocking . [ 16 ]
Antiknock agents. Tetraethyllead (TEL), now banned almost everywhere for causing brain damage. Methylcyclopentadienyl manganese tricarbonyl (MMT) is a neurotoxic substance and is fatal if swallowed/inhaled and causes manganism. [7] Ferrocene; Dimethyl methylphosphonate; Toluene; Isooctane; Triptane; Lead scavengers (for leaded gasoline)
Ethylbenzene is added to gasoline as an anti-knock agent to reduce engine knocking and increase the octane rating. Ethylbenzene is often found in other products, including pesticides , cellulose acetate, synthetic rubber , paints, and inks. [ 4 ]
The octane rating of gasoline is measured in a test engine and is defined by comparison with the mixture of 2,2,4-trimethylpentane (iso-octane) and normal heptane that would have the same anti-knocking capability as the fuel under test. The percentage, by volume, of 2,2,4-trimethylpentane in that mixture is the octane number of the fuel.
An experimental nasal spray has helped clear toxic protein buildups in the brains of mouse models of Alzheimer's. Its developers believe the spray may help delay Alzheimer's by at least a decade.
Pages in category "Antiknock agents" The following 9 pages are in this category, out of 9 total. This list may not reflect recent changes. ...
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