Agrochemicals

1,3-Dichlorobenzene is an organic compound with the formula C6H4Cl2. It is the least common of the three isomers of dichlorobenzene, it is a colorless liquid that is insoluble in water. It is produced as a minor byproduct of the chlorination of benzene, but can also be prepared in a directed manner by the Sandmeyer reaction of 3-chloroaniline. It also arises from the isomerization of the other dichlorobenzenes at high temperature.Used in organic synthesis. The Friedel-Crafts reaction between m-dichlorobenzene and chloroacetyl chloride yields 2,4,ω-trichloroacetophenone, which is used as an intermediate for the broad-spectrum antifungal drug miconazole. The chlorination reaction is carried out in the presence of ferric chloride or aluminum mercury, and 1,2,4-trichlorobenzene is mainly produced. In the presence of a catalyst, it is hydrolyzed at 550-850°C to produce m-chlorophenol and resorcinol. Using copper oxide as a catalyst, it reacts with concentrated ammonia at 150-200°C under pressure to generate m-phenylenediamine. 2. Used in dye manufacturing, organic synthesis intermediates and solvents.

3-methyl-2-nitrobenzoic acid is an organic synthetic intermediate and pharmaceutical intermediate, which can be used in laboratory R & D process and chemical production process.

This product can be used to manufacture a variety of pesticides, fungicides and herbicides. It is an important intermediate of medicine and pesticides.

Nitroguanidine is an organic synthetic raw material. It is used as an intermediate of imidacloprid and Acetamiprid in pesticides to synthesize the next intermediate n-nitroimino imidazolidine. In addition, it can be reduced to prepare aminoguanidine, which can be used to synthesize angina pectoris drug lecoan, etc. it can also be used in the preparation of explosives and smokeless water drugs.

3-Chloro-2-methylpropene is a synthetic, flammable, volatile, colorless to straw-colored liquid that is insoluble in water and soluble in chloroform, acetone, alcohol, ether and benzene. It is used primarily as a chemical intermediate in the production of carbofuran, a carbamate insecticide; used in the production of herbicides, plastics, pharmaceuticals, and other organic as well as an additive in textiles and perfumes. When heated to decomposition, it emits toxic fumes of hydrochloric acid and other chlorinated compounds. Contact exposure of this substance causes irritation of the eyes and skin. Inhalation can lead to irritation of the respiratory tract and depression of the central nervous system. Breathing at high levels of 3-chloro-2-methylpropene vapors may induce coughing, gasping, breathing difficulties and extreme respiratory distress, even coma. It is reasonably anticipated to be a human carcinogen.