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The most common agent is Methyl tert-butyl ether, also known as methyl tertiary butyl ether and MTBE; a chemical compound with molecular formula C5H12O. MTBE is a volatile, flammable and colorless liquid that is immiscible with water. MTBE has a minty odour vaguely reminiscent of diethyl ether, leading to unpleasant taste and odour in water. MTBE is a gasoline additive, used as an oxygenate and to raise the octane number, although its use has declined in the United States in response to environmental and health concerns. In the US it has been used in gasoline at low levels since 1979 to replace tetra-ethyl lead to help prevent engine knocking. Oxygen helps gasoline burn more completely, reducing tailpipe emissions from pre-1984 motor vehicles.
Other anti-knocking compounds are available as oxygenate additives for gasoline, for example ethanol and related ethers, e.g. tert-amyl methyl ether (TAME). Ethanol has been advertised as a safe alternative by the agricultural interest groups in the USA and Europe. Its lack of toxicity is not different from MTBE, but as a polar solvent, it drives off nonpolar hydrocarbons from the gasoline, a problem that MTBE does not cause.
Wiki User
∙ 14y ago
Wiki User
∙ 8y agoKnocking in gas engines is when the fuel-air mixture in the cylinder self-ignites due to compression instead of waiting on the spark plug spark to ignite it. Anti-knocking agents are substances that let's the fuel-air mixture in the cylinder be compressed more w/o self-igniting.
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What is an anti-foaming agent?
simethecone and other non-foaming detergents are good anti-foaming agents.
What Anti caking agents are used in detergent?
Some common anti-caking agents used in detergents include sodium silicate, sodium aluminosilicate, and cellulose. These agents help prevent the detergent particles from clumping together and forming lumps, ensuring that the detergent remains free-flowing and easy to use.
What is knocking in thermodynamics?
gaseous molecules (or atoms)
Are antiseptics oxidizing agents?
Not necessary, but most of the oxidizing agents are antiseptic
Which of the infectious agents is unicellular?
Unicellular infectious agents are prokaryotes, eukaryotes, bacteria, and protoza.
Which agent is the best anti knocking agent?
tetraethyllead
What is used to increase the anti-knocking property of petrol?
tetraethy lead
What has the author Mark Abramowicz written?
Mark Abramowicz has written: 'Handbook of antimicrobial therapy' -- subject(s): Antibacterial agents, Anti-Infective Agents, Adverse effects, Handbooks, Handbooks, manuals, Antiviral agents, Anti-Bacterial Agents, Chemotherapy, Therapeutic use, Anti-infective agents, Communicable diseases, Drug Therapy
What is protozoa treated with?
Anti-protozoal agents
Which is used to increase the anti-knocking property of petrol?
tetra ethyl benzene
What are Anti knocking agent in fuel?
'Gasoline' has the potential to ignite too early ('detonate') in high compression combustion engines, producing a 'knocking' or 'ping' effect. The first compound discovered to remedy this effect was tetraethyllead (tetra-ethyl-lead, TEL). This anti-knocking agent therefore came into widespread use in petroleum, but use of this chemical began to be phased out after the toxicity of lead became known. Thus other antiknock agents used instead of tetraethyllead are: ferrocene, iron pentacarbonyl, toluene, MMT (an organomagnesium compound) and several others.
What is the chemical bromine used for?
Bromine is a halogen element. It is used as a gasoline additive (many brands are using his anti-engine knocking agents for their gasoline). Also, it is used for pesticide, the bromine makes a tenting method so it is perfect for fumigate housing.
WHY IS THERE A Knocking from passenger side Ford Fiesta?
anti roll bar bush 2.50
What is micort cream?
Micort cream consists of the synthetic steroids that is used as anti-inflammatory and anti-pruritic agents.
What class of drugs is used to treat chickenpox?
Anti-viral agents.
Why dont snow cannon pipes freeze?
Anti freezing agents are used
Front suspension knocking noise on a Mercedes Benz 230CLK?
most likely the anti roll bar bushes. It was on mine
