MTBE

Gasoline octane booster

MTBE is methyl tertiary-butyl ether, a chemical compound once widely added to gasoline to reduce air pollution from vehicle exhaust.

It fell out of favor after contaminating groundwater supplies, as it dissolves readily in water and resists breakdown.

Most U.S. states have banned or restricted its use since the early 2000s.

additive

octane

Petroleum hydrocarbon measure

combustion · emissions · blending · phase-out

contamination

groundwater

Water in underground rock

cleanup · plume · drinking water · permeation · detection · monitoring · soil contamination · water treatment · taste · odor

Categories
Opposites
fuel oxygenate type

MTBEethanol

Drinkable volatile spirit

bioethanol · corn ethanol · E85 · biofuels · grain alcohol

Family

ether, methane, methyl, methylene, methylated

Familiarity
Top 2,000,000
Profile
Used worldwide · Timeless · Concrete · Rated G