Butane, do you know what it is? Maybe many people will shake their heads if I ask: Do you know the gas in the lighter? I believe that most people will say, "This must be known!" The main component of the gas in the lighter is butane, but do you know its nature and use? Now I will discuss the properties and uses of butane with you.

Butane, also known as n-butane, is the general name of two alkane hydrocarbons with the same molecular formula. Including: n-butane and isobutane (2-methylpropane) Butane is a flammable, colorless and easily liquefied gas. It is an important raw material for the development of petrochemical industry and organic raw materials, and its use is increasingly valued. Nature: colorless flammable gas. Melting point: "- 135.35C", boiling point: "- 0.5C", density in liquid state: 0.5788g/cm3, refractive index: 1.3326 (20. C), critical temperature: "- 152.0l. C", critical pressure: 380kPa, critical volume: 4387ml/g. It is insoluble in water and soluble in ethanol, ether, chloroform and other hydrocarbons. It forms explosive mixture with air, and the explosive limit is 19% - 84% (xi).

Use of butane gas: In addition to being directly used as fuel and refrigerant, this product is widely used to produce a variety of organic synthetic materials, such as butylene and butadiene through dehydrogenation; Isobutane can be prepared by isomerization; Maleic anhydride and acetic acid can be prepared by catalytic oxidation; Halogenated butane can be prepared; Nitrobutane can be prepared by nitration; Carbon disulfide can be prepared by catalysis at high temperature; Hydrogen can be produced by steam conversion. In addition, butane can also be used as motor fuel admixture to control volatile matter; It can also be used as heavy oil refining deasphalting agent; Wax precipitation solvent in oil well; Spillage agent for secondary oil recovery; Resin foaming agent; Refrigerant for converting seawater into fresh water and olefin Ziegler polymerization solvent. Isobutane (2-methylpropane) is used as refrigerant in refrigeration system, especially in household refrigerators and freezers, instead of Freon. In addition, isobutane is also added to the spray to replace chlorofluorocarbons.

Through such simple description and analysis, I believe that you have a new understanding of butane.