【 Purpose 1 】 Synthetic medicine, pesticides, spices, dyes, rubber anti-aging agent [Purpose 2] mainly used for the production of benzene anhydride, but also the production of dyes, medicine and other raw materials [Purpose 3] mainly used for the production of benzene anhydride, but also the preparation of dyes, medicine, plastics and other basic raw materials, Can be used for the manufacture of dye intermediates, diffusion agents, water reducer, etc. [Purpose 4] used as solvents and analytical reagents, also used for organic synthesis [Purpose 5] used for leather mildew, anticorrosion. Naphthalene is a kind of raw material in the production of pesticides. It can be made into menaphthol and acetonaphthol, and can also be oxidized into benzyl anhydride to further generate benzoimide, and can also be combined with chloroacetic acid to generate naphthalene acetic acid. It CAN BE USED AS THE INTERMEDIates OF INSECTICIDES IMine THIophospHORus, MENalin, HERBICides dioxALamine, plant growth regulators naphthalene ACETIC acid and naphthalene oxyacetic acid. Naphthalene is the most important thick cyclic hydrocarbon in industry, mainly used in the production of benzene anhydride, various naphthalene phenol, naphthalene amine, etc., is the production of synthetic resins, plasticizers, dyes intermediates, surfactants, synthetic fibers, coatings, pesticides, medicine, spices, rubber additives and pesticides raw materials. The distribution of naphthalene uses varies from country to country. About 70% are used in the production of benzene ANHYDRIde, about 15% are used in dye intermediates and rubber auxiliaries, about 6% ARE insecticides, and about 4% are tanning agents. A larger proportion of pesticides are used in the United States, mainly for carbaryl. A variety of intermediates can be prepared from naphthalene through sulfonation, nitration, reduction, amination, hydrolysis and other unit operations. The application of refined naphthalene is also expanding, and a new product, "super plastic material", namely naphthalene sulfonate formaldehyde condensation, can be used as cement additives to increase the plastic deformation of concrete without reducing its strength. Demand will grow at a rate of 5-10% in the next few years. [Purpose 8] Solvent for crystallization of insoluble dyes in organic analysis. Determination of molecular weight. Standard for colorimetry. Standard for the determination of carbon and hydrogen by organic microanalysis. Crystal organic scintillators in liquid scintillation counting. Calibrate the thermometer.
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