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

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Dichloromethane has a wide range of applications in the field of chemical production raw materials, and its upstream and downstream related products are rich and diverse. The following are some of the main upstream and downstream associated products of dichloromethane:

1. Upstream products:

(1) Methanol: Methanol is one of the main raw materials for the production of dichloromethane, and dichloromethane can be produced by chlorination reaction.

(2) Chlorine gas: Chlorine gas is another important raw material in the production of dichloromethane, which reacts with methanol to form dichloromethane.

2. Downstream products:

(1) Polycarbonate (PC): Dichloromethane can be used as a solvent for polycarbonate production to help control the speed and molecular weight of the polymerization reaction.

(2) Coatings and adhesives: Dichloromethane can be used as a solvent in coatings and adhesives to improve product fluidity and construction performance.

(3) Pesticides and pharmaceutical intermediates: Dichloromethane can be used to produce pesticides and pharmaceutical intermediates, such as fungicides, herbicides, etc.

(4) Freon: Dichloromethane can be used as a raw material for the production of Freon, used in refrigerants and foaming agents.

In short, dichloromethane has a wide range of applications in the field of chemical production raw materials, and its upstream and downstream related products are rich and diverse, which plays an important role in promoting the development of the chemical industry.

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