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

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

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