Intermediates refer to intermediates that use coal tar or petroleum products as raw materials to manufacture dyes, pesticides, pharmaceuticals, resins, additives, plasticizers, etc.
Intermediate is also called organic intermediate. Coal tar or petroleum products are used as raw materials to produce intermediates such as dyes, pesticides, pharmaceuticals, resins, additives, plasticizers, etc. It was originally used in the manufacture of dyes, also known as dye intermediates.
Some are formed by sulfonation, alkali melting, nitration, reduction and other reactions of cyclic compounds such as benzene, naphthalene, anthracene, etc.
For example, benzene is nitrated into nitrobenzene, and then reduced to aniline. Aniline can be chemically processed into dyes, drugs, vulcanization accelerators, etc. Nitrobenzene and aniline are intermediates.
Some are formed from acyclic compounds such as methane, acetylene, propylene, butane, butene through dehydrogenation, polymerization, halogenation, hydrolysis and other reactions. For example, butane or butene is dehydrogenated into butadiene, and butadiene can be chemically processed into synthetic rubber, synthetic fiber, etc. Butadiene is an intermediate.
Initially, it refers to the intermediate products produced in the process of synthesizing chemical products such as spices, dyes, resins, drugs, plasticizers, rubber accelerators, etc. with coal tar or petroleum products as raw materials. It now refers to various intermediates obtained in the process of organic synthesis.
Intermediates refer to semi-finished products, which are intermediate products in the production of some products. For example, if you want to produce a product, you can produce it from intermediates to save costs. Pharmaceutical production requires a large number of special chemicals, most of which were originally produced by the pharmaceutical industry itself. However, with the deepening of social division of labor and the progress of production technology, the pharmaceutical industry has transferred some pharmaceutical intermediates to chemical enterprises for production. Pharmaceutical intermediates are fine chemical products. The production of pharmaceutical intermediates has become a major industry in the international chemical industry.
In cell biology, intermediate refers to the middle of the gradually disintegrating spindle near the equatorial plane at the late stage of cell division. The concentration of cytoplasm around it increases and fills the whole equatorial plane. This area of concentration is called intermediate.
Pharmaceutical production requires a large number of special chemicals, most of which were originally produced by the pharmaceutical industry itself. However, with the deepening of social division of labor and the progress of production technology, the pharmaceutical industry has transferred some pharmaceutical intermediates to chemical enterprises for production. Pharmaceutical intermediates are fine chemical products. The production of pharmaceutical intermediates has become a major industry in the international chemical industry.
In cell biology, intermediate refers to the middle of the gradually disintegrating spindle near the equatorial plane at the late stage of cell division. The concentration of cytoplasm around it increases and fills the whole equatorial plane. This area of concentration is called intermediate.
Extended data:
Classification of intermediates:
Intermediates are formed by sulfonation, alkali melting, nitration, reduction and other reactions of cyclic compounds such as benzene, naphthalene, anthracene, etc. For example, benzene is nitrated into nitrobenzene, and then reduced to aniline. Aniline can be chemically processed into dyes, drugs, vulcanization accelerators, etc. Nitrobenzene and aniline are intermediates.
There are also acyclic compounds such as methane, acetylene, propylene, butane, butene, etc. through dehydrogenation, polymerization, halogenation, hydrolysis and other reactions. For example, butane or butene is dehydrogenated into butadiene, and butadiene can be chemically processed into synthetic rubber, synthetic fiber, etc. Butadiene is an intermediate.
Initially, it refers to the intermediate products produced in the process of synthesizing chemical products such as spices, dyes, resins, drugs, plasticizers, rubber accelerators, etc. with coal tar or petroleum products as raw materials. It now refers to various intermediates obtained in the process of organic synthesis.