Hydrogen cyanide (formerly known as prussic acid) is a chemical compound with the formula HCN and structural formula H−C≡N. It is a highly toxic and flammable liquid that boils slightly above room temperature, at 25.6 °C (78.1 °F).

氰化氫，又稱 氫氰酸， 化学式 H C N，相当 擬鹵素 氰 的擬 鹵化氫。 标准状态下为 液體，剧毒且致命，無色而 苦，並有淡淡的 杏仁 氣味（杏桃 的果核中含有 苦杏仁苷，溶于水會釋放出氰化氫 [12]），能否嗅出視乎個人 基因 [13]。 氰化氫是一种弱酸，沸點26℃（79°F）。 氰化氫是一個線性分子，碳和氮之間具有三鍵。 红色的 铁氰酸根 离子，是 普鲁士蓝 的一部分。 氢氰酸首次在一种1706年已知的蓝色染料（普鲁士蓝）中提取，不过普鲁士蓝的结构在当时仍然未知。 它现 …

Hydrogen cyanide (formula HCN) or prussic acid is a colourless to slightly yellowish liquid when it is pure. It is also flammable, soluble in water and highly volatile. The name hydrocyanic acid goes back to the earlier extraction from the inorganic, pigment “Berlin blue”, which is characterised by a deep blue colour.

At temperatures below 78ºF, hydrogen cyanide is a colorless or pale-blue liquid (hydrocyanic acid); at higher temperatures, it is a colorless gas. Hydrogen cyanide is very volatile, producing potentially lethal concentrations at room temperature. …

Hydrogen Cyanide | CHN | CID 768 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

Hydrogen cyanide‚ HCN‚ is also known as hydrocyanic acid‚ prussic acid and formonitrile. Although HCN is a colorless liquid‚ iron cyanide is blue (prussian blue) and its presence as a slight contaminant usually gives HCN a bluish tint that led to the German name Blausäure – blue acid.

Hydrogen cyanide (with the historical common name of Prussic acid) is a chemical compound with chemical formula HCN. Hydrogen cyanide is a colorless, extremely poisonous liquid that boils slightly above room temperature at 26 °C (79 °F). Hydrogen cyanide is a linear molecule, with a triple bond between carbon and nitrogen.

With variant colour from colourless to pale blue, hydrogen Cyanide (HCN) is easily detectable through its bitter almond smell. This highly toxic gas features many harmful or lethal properties. This chemical compound is extremely flammable with explosive limits between 5.6 and 40%.

Hydrogen cyanide is a chemical compound with chemical formula HCN. A solution of hydrogen cyanide in water is called hydrocyanic acid. Hydrogen cyanide is a colorless, very poisonous, and highly volatile liquid that boils slightly above room temperature at 26 °C (78.8 °F).

Hydrocyanic acid, also known as prussic acid or hydrogen cyanide (HCN), is an unstable, colorless, and extremely poisonous liquid that boils slightly above room temperature at 26 °C (78.8 °F). Discovered by Swedish chemist Carl Wilhelm Scheele in 1782, it has a pungent odor of almonds, which is detectable at concentrations above 5 ppm.