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Cyanide preparation to be opened and used only by trained personnel". Zyklon B ( German: [tsyˈkloːn ˈbeː] ⓘ; translated Cyclone B) was the trade name of a cyanide-based pesticide invented in Germany in the early 1920s. It consists of hydrogen cyanide (prussic acid), as well as a cautionary eye irritant and one of several adsorbents such ...
Sodium cyanide is produced by treating hydrogen cyanide with sodium hydroxide: HCN + NaOH → NaCN + H 2 O. Worldwide production was estimated at 500,000 tons in the year 2006. Formerly it was prepared by the Castner process involving the reaction of sodium amide with carbon at elevated temperatures. NaNH 2 + C → NaCN + H 2
There are some cyanides that are, but others that are not. Prussian blue, a cyanide compound, is given as a treatment to poisoning with thallium and caesium, for example. The poisons referred to are usually hydrogen cyanide (HCN), and the chemicals which are similar to it, like potassium cyanide (KCN), and sodium cyanide (NaCN).
Cyanide wordt gebruikt in galvanisatiebaden voor depositie van koper en zilver en bij een aantal chemische synthesen van grondstoffen voor kunststoffen . Cyanide zorgde in 1978 voor de verplichte zelfmoord van meer dan 900 leden van Peoples Temple in Guyana . Abrikozenpitten en amandelpitten bevatten van nature cyanogene glycosiden.
Potassium cyanide is highly toxic, and a dose of 200 to 300 milligrams will kill nearly any human. The moist solid emits small amounts of hydrogen cyanide due to hydrolysis (reaction with water). Hydrogen cyanide is often described as having an odor resembling that of bitter almonds.
Acid hydrocyanic có công thức hóa học là HCN, khối lượng phân tử 27. Ở thể khan là chất lỏng linh động, không màu, rất dễ tan trong nước, rượu và dễ hóa rắn, dễ bay hơi ( nhiệt độ nóng chảy là −15 °C, nhiệt độ sôi là 25,6 °C), tỷ trọng d= 0.696. Hơi của HCN có tỷ ...
