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[Chemical Knowledge]：What are the upstream raw materials for 3,4-dichloroaniline? What do the downstream products contain?

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3,4-Dichloroaniline is an important chemical raw material, which is widely used in pesticide, medicine, dye and other fields. The following are the upstream and downstream related products of 3,4-dichloroaniline:

upstream products:

1. aniline: aniline is an important precursor of 3,4-dichloroaniline, which can be obtained by chlorination reaction.

2. Chlorine: Chlorine is the raw material required for the chlorination reaction and reacts with aniline to generate 3,4-dichloroaniline.

Downstream products:

1. Pesticide: 3,4-dichloroaniline can be used as an intermediate of pesticides for the production of fungicides, herbicides and other pesticide products.

2. Pharmaceutical intermediates: 3,4-dichloroaniline can be used to produce some pharmaceutical intermediates, such as antidepressants.

3. Dyes: 3,4-dichloroaniline can be used to produce some dye products, such as cationic dyes.

Specifically, the downstream products of 3,4-dichloroaniline include, but are not limited to, the following:

1. 3,4-dichlorobenzaldehyde: obtained from the oxidation of 3,4-dichloroaniline for the production of dyes and pharmaceutical intermediates.

2. 3,4-dichloronitrobenzene: obtained from the nitration of 3,4-dichloroaniline, used in the production of pesticides and dyes.

3. 3,4-dichloroacetophenone: by 3,4-dichloroaniline and ethyl acetoacetate reaction, used in the production of pharmaceutical intermediates and pesticides.

In short, 3,4-dichloroaniline, as an important chemical raw material, has a wide range of upstream and downstream related products, which is of great significance to the development of pesticides, pharmaceuticals, dyes and other fields.

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