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Calcium cyanamide
The chemical formula of calcium cyanamide is CaCN₂, and its structural formula is Ca=N—C≡N. Calcium cyanamide is a mixture composed of calcium cyanamide, calcium oxide, and other insoluble impurities. It is gray - black in color and has a peculiar odor. It is an alkaline fertilizer and also one of the main raw materials for highly effective and low - toxicity carbendazim pesticides. It can be used as a herbicide, fungicide, insecticide, etc., and can be used in the production of dicyandiamide, melamine, and cyanide melt. The chemical equation for the formation of calcium cyanamide is: CaC₂ + N₂ = CaCN₂ + C (heated).

Product Uses It is an alkaline fertilizer and one of the main raw materials for highly effective and low - toxicity carbendazim pesticides. It can be used as a herbicide, fungicide, and insecticide (to prevent the spread of schistosomiasis, prevent root rot, rust, and white mold, and can kill oncomelania, leeches, etc.). It can also be used as a defoliant for cotton and plays a role in soil improvement. It is a basic raw material for the organic synthesis industry and the plastics industry, and can be used in the production of dicyandiamide, melamine, and cyanide melt. Product Characteristics The pure product is a white solid, containing about 34% nitrogen. It has the odor of calcium carbide or ammonia, with a melting point of 1300°C and sublimates above 1150°C. It is slightly soluble in water and hydrolyzes to release ammonia and acetylene. It is toxic.

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