4-dichlorophenylhydrazine_Kain Industrial Additive

background and overview[1] 2,4-dichlorophenylhydrazine is an important chemical raw material. the current preparation methods of 2,4-dichlorophenylhydrazine cannot avoid operations such as diazotization, sulfonation, and reduction of 2,4-dichloroaniline. these operations have high requirements on reaction temperature, and diazotization must be low-temperature reaction, and poor control of the dripping speed and reaction degree of the sodium nitrite…