Intermediates

Intermediates refer to semi-finished products, which are the intermediate products of some products. For example, if you want to produce a product, you can produce it from intermediates to save costs. Intermediates are made of cyclic compounds such as benzene, naphthalene and anthracene through sulfonation, alkali melting, nitrification, reduction and other reactions. For example, benzene is nitrated into nitrobenzene, and then reduced to aniline, which can be chemically processed into dyes, drugs, vulcanization accelerators, etc. Nitrobenzene and aniline are both intermediates. There are also acyclic compounds such as methane, acetylene, propylene, butane, butene and so on by dehydrogenation, polymerization, halogenation, hydrolysis and other reactions. For example, butane or butene by dehydrogenation into butadiene, butadiene can be chemically processed into synthetic rubber, synthetic fibers, etc. Butadiene is an intermediate. Originally refers to the intermediate products produced in the process of synthetic chemical products such as spices, dyes, resins, medicines, plasticizers and rubber promoters using coal tar or petroleum products as raw materials. Now refers to various intermediates obtained in the process of organic synthesis.