Dyestuff IntermediateSyntheses

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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2-Chloronitrobenzene 99% CAS NO 88-73-3
2-Chloronitrobenzene 99% CAS NO 88-73-3

4-Aminoacetanilide 98% CAS NO 122-80-5
4-Aminoacetanilide 98% CAS NO 122-80-5

4-Chlorophenylhydrazine hydrochloride 99% CAS NO 1073-70-7
4-Chlorophenylhydrazine hydrochloride 99% CAS NO 1073-70-7

4-iodopyrazole 98%  CAS NO 3469-69-0
4-iodopyrazole 98% CAS NO 3469-69-0

Aluminum phthalocyanine chloride 99% CAS NO 14154-42-8
Aluminum phthalocyanine chloride 99% CAS NO 14154-42-8

Sulphur Black 1 CAS NO 1326-82-5 98%
Sulphur Black 1 CAS NO 1326-82-5 98%

Sudan I 98% CAS  842-07-9
Sudan I 98% CAS 842-07-9

12-Phthaloperinone 98% CAS NO 61969-47-9
12-Phthaloperinone 98% CAS NO 61969-47-9

Solvent Yellow 33 Lemon Yellow 4G CAS NO 8003-22-3
Solvent Yellow 33 Lemon Yellow 4G CAS NO 8003-22-3

Benzylamine 99% CAS  100-46-9
Benzylamine 99% CAS 100-46-9

Hot sale Organic Chemicals CAS 515-74-2 for Industry
Hot sale Organic Chemicals CAS 515-74-2 for Industry

Factory Price Industrial Grade Nickel sulfate with CAS 7786-81-4
Factory Price Industrial Grade Nickel sulfate with CAS 7786-81-4

Nickel Sulfate/NiSO4 Nickel Sulfate price CAS 7786-81-4
Nickel Sulfate/NiSO4 Nickel Sulfate price CAS 7786-81-4

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