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[Chemical Knowledge]：What are the upstream raw materials for aniline? What do the downstream products contain?

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Aniline is an important organic chemical raw material, which is widely used in medicine, pesticide, dye, rubber, plastic, ink and other fields. There are many upstream and downstream related products of aniline, some of which are described in detail below.

1. the upstream product of aniline

1. Benzene: Benzene is one of the main raw materials of aniline. Nitrobenzene can be generated by nitration reaction, and then aniline can be obtained by reduction.
2. Hydrogen: Hydrogen is also essential in the production of aniline and is used to reduce nitrobenzene to produce aniline.

2. the downstream products of aniline

1. Methylaniline: Methylaniline is an important derivative of aniline, which can be prepared by the reaction of aniline and methanol. Methylaniline is an important organic intermediate, which can be used in the production of pesticides, pharmaceuticals, dyes and other products.
2. Diphenylamine: Diphenylamine can be prepared by the reaction of aniline and benzene. It is also an important organic intermediate and can be used in the production of rubber antioxidants, antioxidants, dyes and other products.
3. nigrosine: nigrosine is a dye made by the reaction of aniline with benzoquinone. It has good light resistance and heat resistance, and is widely used in dyeing textiles, leather and other products.
4. rubber antioxidant: aniline derivatives can be used as rubber antioxidant, can extend the service life of rubber products.

In short, as an important organic chemical raw material, aniline has a wide range of upstream and downstream related products, involving medicine, pesticides, dyes, rubber, plastics and other fields.

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