Dye intermediates, also referred to as intermediates, refer to various aromatic derivatives used in the production of dyes and organic pigments. They are derived from benzene, toluene, naphthalene, anthracene and other aromatic hydrocarbons from coal chemical and petrochemical industries through a series of organic synthesis unit processes. With the development of chemical industry, the application range of dye intermediates has been extended to pharmaceutical industry, pesticide industry, propellant and explosive industry, information recording materials industry, as well as auxiliaries, surfactants, spices, plastics, synthetic fibers and other production sectors. There are many kinds of dye intermediates, and hundreds of them are more important. The most important early dye intermediates, such as nitrobenzene, aniline, phenol, chlorobenzene and phthalic anhydride, have been developed into important basic organic intermediates because of their wide use and large dosage. The annual output in the world is more than one million tons. The most important dye intermediates are o-nitrochlorobenzene, p-nitrochlorobenzene, o-nitrotoluene, p-nitrotoluene, 2-naphthol, anthraquinone, 1-aminoanthraquinone and so on. Starting from the above intermediates and through a series of organic synthesis unit processes, various intermediates with complex structures can be prepared.
Dye intermediates mainly include benzene intermediates, toluene intermediates, naphthalene intermediates and anthraquinone intermediates, in addition, there are some heterocyclic intermediates. The main reaction processes of intermediate in production are nitration, sulfonation, halogenation, reduction, amination, hydrolysis, oxidation, condensation and so on. The synthesis of a complex intermediate often takes many unit processes, sometimes using different basic materials and different synthetic routes.
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A: we will pack the product specifications according to your needs.
Q2: Do you have some videos where we can see the line production?
A: Yes, we can provide some videos for reference. (yes, we can provide some videos).
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A: 30% TT deposit + 70% TT before shipment, 50% TT deposit + 50% LC bala
Nce, Flexible payment can be negotiated.
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A: the quality of the products we offer can be guaranteed and will provide you with very competitive prices.
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Shandong Chenyi Environmental Protection Technology Co.,Ltd
Contact Person: Jerry
Address: No.215 Beiyuan Main street,tianqiao District,Jinan,Shandong