| [Visitor (112.21.*.*)]answers [Chinese ] | Time :2022-01-26 |  cyanide
Cyanide refers specifically to a compound with a cyanogen group (CN), in which the carbon and nitrogen atoms are connected by three bonds. This three-fold bond gives the cyano a fairly high degree of stability, allowing it to exist as a whole in the usual chemical reactions. Because this group has similar chemical properties to halogens, it is often referred to as halogen-like. Cyanide is generally known as inorganic cyanide, commonly known as Sannai (from the English transliteration "Cyanide"), refers to the inorganic salt containing cyanide ions (CN-), can be considered as hydrocyanic acid (HCN) salts, common potassium cyanide and sodium cyanide. They are highly toxic and are therefore well known to the world. Organic cyanide is also formed by combining cyanogen groups with additional carbon atoms through single bonds.Depending on the binding method, organic cyanide can be classified as nitrile (C-CN) and isonitrile (C-NC), correspondingly, cyanide can be called nitrile (-CN) or isonitrile (-NC). Organic cyanides, such as acetonitrile, acrylonitrile, n-butyronitrile, etc., can quickly precipitate ions in the body, which are highly toxic. Many cyanides that release hydrogen cyanide or cyanide ions in air and tissues after heating or acting with acids have the same highly toxic effect as hydrogen cyanide...
Cyanide is widely used in industry. Such as engaged in electroplating, washing, paint, dyes, rubber and other industries personnel contact opportunities more. In daily life, peach, plum, apricot, loquat and other contain hydrocyanic acid, of which bitter almonds are the highest content, cassava also contains hydrocyanic acid. There are also cases of suicide or other homicide with cyanide in society.
Occupational cyanide poisoning is mainly through the respiratory tract and, secondly, can be absorbed through the skin at high concentrations.
Living cyanide poisoning is mainly oral. The oral mucosa and digestive tract are adequately absorbed.
After the cyanide enters the human body, the cyanide ions are precipitated, which binds to the trivalent iron of the oxidizing cytochrome oxidase in the mitochondrial body, prevents the reduction of trivalent iron in the oxidase, hinders the normal respiration of the cells, and the tissue cells cannot use oxygen, causing the tissue to be hypoxic, resulting in the body falling into an internal asphyxia state. In addition, the molecules of certain nitrile compounds themselves have a direct inhibitory effect on the central nervous system. |
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