mtbe is used as a gasoline additive to prevent engine knocking.
why is mtbe used as a gasoline additive?
to prevent engine knocking
in the us it has been used in gasoline at low levels since 1979, replacing tetraethyl lead as an antiknock (octane rating) additive to prevent engine knocking. oxygenates also help gasoline burn more completely, reducing tailpipe emissions and dilute or displace gasoline components such as aromatics (e.g., benzene). before the introduction of other oxygenates and octane enhancers, refiners chose mtbe for its blending characteristics and low cost.





























section::::uses.:alternatives to mtbe as an anti-knock agent.





























other oxygenates are available as additives for gasoline including ethanol and other ethers such as etbe.
methyl tert-butyl ether
section::::regulation in the united states.:restrictions on mtbe manufacturing and usage.





























in 2000, epa drafted plans to phase out the use of mtbe nationwide over four years.. some states enacted mtbe prohibitions without waiting for federal restrictions. california banned mtbe as a gasoline additive in 2002. the state of new york banned the use of mtbe as a "fuel additive", effective in 2004. mtbe use is still legal in the state for other industrial uses.
mtbe controversy