MTBE (Methyl tert-butyl ether)

It is used as an additive to motor fuels to increase the octane number of gasoline (antiknocker). The maximum legally allowed amount of MTBE in gasoline in the European Union is 15%, in Poland — 5%, in Russia — 15%.

MTBE is widely used in the production of high-octane gasoline, acting as a non-toxic but less calorific high-octane component and as an oxygenate (oxygen carrier) that contributes to more complete combustion of fuel and prevents corrosion of metals. Global consumption of MTBE stands at 20-22 million tonnes per year.

Description: A volatile, flammable and colourless liquid, poorly soluble in water.

Qualitative indicators:

Visual appearance — transparent liquid
Density at 20ºС = 740
Mass fraction of methyl tert-butyl ether, = 98,8 %