Cyanamide
Molecular formula : CN2H2
Molecular weight : 42.02
Physical and chemical properties: Crystal Cyanamide is unstable, diamond-shaped, colorless, and easy to moisture. The melting point is 46°C, the boiling point is 83°C, and the flash point is 141°G. When 0°C-30°C is about, the heat capacity value is 2.29 kJ/kg.°C. Cyanamide has high solubility in water and is weakly acidic. Liquid 30%-50% Cyanamide itself is acidic with a general pH of 4.2 to 5.0. It is completely miscible with water at 43°C. Cyanamide contains cyano and amino groups, both of which are active groups. With the multiple reactivity of the above functional groups, it is prone to reactions such as addition, substitution and condensation.
Cyanamide solution is used as a defoliant and non-toxic insecticide for fruit trees abroad. Crystalline Cyanamide is mainly used in the synthesis of medicines, health care products, feed additives and pesticide intermediates, and its Uses are very wide.
Cyanamide is an important pesticide intermediate. It can be used to prepare the fungicides carbendazim, benomyl, methastrobin, azoxystrobin, the insecticides Aphicarb, pyrimidinox, and the herbicides chlorsulfuron and metsulfuron , Mesulfuron-methyl, Tribenuron-methyl, Bensulfuron-methyl, Pyridinesulfuron, Cyclozinone, etc.
Packing: Packed in plastic barrels, 50, 100, 200Kg per barrel, or according to user requirements.
Cyanamide is mainly used for the production of cytidine hydrochloride, dye intermediate 3-amino-5-hydroxy-1,2,4-triazole, cyanuronamide, cyanamide, cyanamide, cyanamide, cyanurimide, thiourea, carbendazim, etc; It is also the raw material for the preparation of organic guanidine, and then produces barbituric acid, sulfonamide medicine, guanidine salt, etc; In medicine, it can also be used to produce fluorouracil, an anti-cancer drug; Cyanamide calcium salt is used in alcohol poisoning and has the effect of insect repellency. Cyanamide can be used as raw materials for chemical pesticides without residue, low toxicity and broad-spectrum, and also can be used to produce fungicides such as carbendazim, Benazolin, methylazoxyamine, azoxyamine, insecticide against aphimethacin, pyrimidinol, herbicides such as Chlorsulfuron, methasulfuron, methasulfuron, ether benzenesulfuron, benzyl Sulfuron, pyrazosulfuron and cyclozine. It is of great significance to the technical innovation of pesticide production, which can solve the environmental pollution problems that are difficult to solve when the general pesticide manufacturers buy lime nitrogen to produce pesticides, turn to buy cyanamide to produce pesticides, save equipment investment and reduce production cost. In addition, cyanamide can also be used to produce o-methyl-isourea, creatine, guanidine phosphate flame retardant, etc. at the same time, as a flame retardant with excellent performance, monocyanamide polyol or polyether solution can be used to produce polyurethane, which can obviously improve the flame retardant performance of polyurethane materials, and is a new fine chemical new material.
Ningxia, China
