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

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Phthalic anhydride, also known as phthalic anhydride, is an important organic chemical raw material. In the field of chemical production raw materials, phthalic anhydride has a wide range of upstream and downstream related products, and some of the main upstream and downstream products will be described in detail below.

upstream products:

1. Benzene: Benzene is one of the main raw materials of phthalic anhydride, which can be produced through oxidation reaction.

2. Naphthalene: Naphthalene can also be used as a raw material for the production of phthalic anhydride, which can be converted into phthalic anhydride through certain chemical reactions.

Downstream products:

1. Plasticizer: Phthalic anhydride is one of the main raw materials for the production of plasticizers. It can be used to produce phthalate plasticizers and is widely used in plastics, rubber, coatings and other fields.

2. unsaturated polyester resin: phthalic anhydride can be used in the production of unsaturated polyester resin, the resin has excellent resistance to chemical corrosion, widely used in glass steel products, coatings, adhesives and other fields.

3. Pesticide: Phthalic anhydride can be used as an intermediate for pesticides, used to produce some pesticides, fungicides and herbicides.

4. Dyes: Phthalic anhydride can be used as a dye intermediate for the production of some disperse dyes, reactive dyes, etc.

In conclusion, as an important organic chemical raw material, phthalic anhydride has a wide range of applications in the field of chemical production raw materials. Its upstream and downstream related products are numerous, involving plastics, rubber, coatings, pesticides, dyes and other fields, which play an important role in promoting the development of the chemical industry.

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