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[Chemical Knowledge]：Properties and Uses of Cyanamide

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Cyanamide is an important organic chemical raw material with unique properties and a wide range of uses. This article will introduce in detail the properties, production methods, safety and applications of cyanamide in different fields.

properties of 1. cyanamide

cyanamide (Cyanamide) is a colorless crystalline powder, molecular formula CH2N2. It is highly alkaline and can be miscible with water, alcohol, ether and other solvents. Cyanamide is prone to hydrolysis to produce ammonia and formic acid under acidic conditions. In addition, cyanamide is also reductive and can be oxidized to generate cyanic acid.

2. cyanamide production method

cyanamide production method mainly has two kinds: sulfuric acid method and cyanidation method. The sulfuric acid method is to react lime nitrogen with sulfuric acid to generate calcium sulfate and cyanamide sulfate, and then obtain cyanamide products through crystallization, centrifugation, drying and other processes. Cyanidation law is the reaction of ammonium carbonate and sodium cyanide to produce cyanamide and sodium bicarbonate, and the product is obtained through filtration, crystallization, drying and other processes.

safety
of 3. cyanamide
cyanamide is toxic to human body and can enter human body through inhalation, ingestion and skin absorption, causing poisoning symptoms. Mild poisoning is manifested as headache, dizziness, nausea, vomiting, etc., severe poisoning can lead to coma, convulsions, and even death. Therefore, in the process of production and use, it is necessary to strictly abide by the safety operation procedures and take protective measures.

4. the use of cyanamide

1. pharmaceutical field: cyanamide can be used in the production of anti tuberculosis drugs isoniazid, antibacterial drugs such as furazolidone.
2. Pesticide field: Cyanamide can be used as an intermediate of fungicides, insecticides and other pesticides, such as carbendazim, thiophanate methyl, etc.
3. plastics field: cyanamide can be used as a modifier for plastics to improve the heat resistance, weather resistance, impact resistance and other properties of plastics.
4. Fiber field: Cyanamide can be used to produce nylon fiber to improve the strength and wear resistance of the fiber.
5. Rubber field: Cyanamide can be used as a vulcanization accelerator for rubber to improve the vulcanization speed and crosslinking density of rubber.

In short, as an important organic chemical raw material, cyanamide is widely used in medicine, pesticide, plastic, fiber, rubber and other fields. During use, it is necessary to pay attention to safety, abide by operating procedures, and take protective measures to ensure production safety and personnel health.

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