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2,2,4-Trimethylpentane, also known as isooctane, is an octane isomer which defines the 100 point on the octane rating scale (the zero point is n-heptane). It is an important component of gasoline . Isooctane is produced on a massive scale in the petroleum industry, usually as a mixture with related hydrocarbons.
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 ]
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 ]
Methylcyclopentadienyl manganese tricarbonyl (MMT or MCMT) is an organomanganese compound with the formula (C 5 H 4 CH 3)Mn(CO) 3.Initially marketed as a supplement for use in leaded gasoline, MMT was later used in unleaded gasoline to increase the octane rating.
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)
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Heptane or n-heptane is the straight-chain alkane with the chemical formula H 3 C(CH 2) 5 CH 3 or C 7 H 16.When used as a test fuel component in anti-knock test engines, a 100% heptane fuel is the zero point of the octane rating scale (the 100 point is 100% iso-octane).
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