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Isobutane

Description

Isobutane, also known as i-butane, 2-methylpropane or methylpropane, is a chemical compound with molecular formula HC(CH3)3. It is an isomer of butane. Isobutane is a colourless, odourless gas. It is the simplest alkane with a tertiary carbon atom. Isobutane is used as a precursor molecule in the petrochemical industry, for example in the synthesis of isooctane.

 

Using Areas

Isobutane is the principal feedstock in alkylation units of refineries. Using isobutane, gasoline-grade “blendstocks” are generated with high branching for good combustion characteristics. Typical products created with isobutane are 2,4-dimethylpentane and especially 2,2,4-trimethylpentane.

 

Properties Description
Chemical formula C4H10
Molar mass 58.124 g·mol−1
Appearance Colorless gas
Odor Odorless
Density 2.51 kg/m3
Conjugate acid Isobutanium
Magnetic susceptibility −51.7·10−6 cm3/mol