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High purity Isobutane

Name: High purity Isobutane Alias: 2-methylpropane Chemical formula: C4H10 Molecular weight: 58.12 CAS registration number: 75-28-5 Melting point: -159.4℃ ...

Release time：2025-04-26

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Name: High purity Isobutane

Alias: 2-methylpropane

Chemical formula: C4H10

Molecular weight: 58.12

CAS registration number: 75-28-5

Melting point: -159.4℃

Boiling point: -11.73℃

Physical properties:

Appearance and properties Colorless, slightly odorous gas

Melting point (℃) -159.6

Relative density (water = 1) 0.56

Boiling point (℃) -11.8

Relative vapor density (air = 1) 2.01

Molecular formula C4H10

Molecular weight 58.12

Preparation method of High purity Isobutane:

1. It exists in liquefied petroleum gas, natural gas, and cracked gas. The four fractions of carbon produced by petroleum cracking are separated.

2. Using industrial isobutane as raw material (content 82%~91%), a three-stage adsorption process is adopted. The first-stage adsorber removes impurities such as C2, C3, n-butane, 1-butene, etc., the second-stage adsorber removes isobutylene, and the third-stage adsorber further removes C2 and C3 hydrocarbon impurities. The product purity is greater than 99.99%.

3. Natural gas is obtained by adsorption or freezing with surfactants after fractionation.

High purity Isobutane application areas:

1. Alkylation reaction with isobutylene to produce isooctane, which is used as a gasoline octane improver. Isobutylene and propylene can be produced by cracking. Alkylation gasoline can be produced by alkylation reaction of n-butene and propylene. Methyl acrylic acid, acetone and methanol are produced. It can also be used as a refrigerant.

2. High purity Isobutane is mainly used as a standard gas and a special standard mixed gas.

3. It is used to synthesize isooctane as a gasoline octane improver, used to manufacture isobutylene, propylene, methacrylic acid, and used as a refrigerant.

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