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

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Industrial naphthalene plays an important role in the field of raw materials for chemical production, and its upstream and downstream related products are extensive. The main upstream and downstream related products of industrial naphthalene will be described in detail below.

upstream products:

1. Coal tar: The main raw material for the production of industrial naphthalene is coal tar, which contains a large number of aromatic compounds, and industrial naphthalene can be obtained by distillation and separation.
2. Petroleum brain: Petroleum brain is also one of the raw materials for the production of industrial naphthalene, which is rich in aromatic hydrocarbons and can be used to produce industrial naphthalene.

downstream products:

1. refined naphthalene: industrial naphthalene can be further refined into refined naphthalene for the production of higher grade chemical products, such as phthalic anhydride, phthalic anhydride and so on.
2. Naphthol: fine naphthalene can be oxidized to naphthol, naphthol is the production of dyes, pharmaceuticals, pesticides and other important intermediates.
3. methyl naphthalene: industrial naphthalene can be generated by alkylation reaction of methyl naphthalene, methyl naphthalene is the production of pesticides, plastic plasticizers and other important raw materials.
4. Naphthalene water reducing agent: industrial naphthalene can be processed into naphthalene water reducing agent, is a kind of efficient concrete admixture, can be used to improve the strength and fluidity of concrete.

To sum up, industrial naphthalene plays an important role in the field of chemical production raw materials, and its upstream and downstream related products are extensive, involving many fields, such as dyes, pharmaceuticals, pesticides, plastics, concrete and so on. With the continuous development and progress of science and technology, the application field of industrial naphthalene upstream and downstream products will continue to expand and deepen.

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