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Preparation method of 2-cyano-4-nitroaniline

2-cyano-4-nitroaniline is an important active component in the synthesis of disperse dyes. Usually, o-chlorobenzonitrile is synthesized from o-Chlorotoluene by ammoxidation, then 2-chloro-5-nitrobenzonitrile is obtained by nitration, and then 2-cyano-4-nitroaniline is obtained

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Hydrazine hydrate wastewater treatment

The chlorine-foam separation method is a new and efficient method for treating hydrazine hydrate wastewater. The hydrazine hydrate wastewater is spirally ejected through the nozzle in the foam separation column, and is

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Multiple uses of o-chlorobenzyl chloride

O-chlorobenzyl chloride is used in the production of o-chlorocyanobenzyl, o-chlorobenzamide and organic synthetic dyes, in the pharmaceutical industry.In the pharmaceutical industry, it is used to make stimulant enzymes such as sputum. O-chlorobenzyl

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