Hydrogen Cyanide Gas

Hydrogen cyanide (HCN) is a highly toxic and flammable compound with the chemical formula HCN and structural formula H−C≡N. It exists as a colorless liquid or gas, with a boiling point slightly above room temperature at 25.6 °C (78.1 °F). Here are some key points about hydrogen cyanide:

1. Toxicity: Hydrogen cyanide is extremely poisonous. It produces potentially lethal concentrations even at room temperature due to its high volatility. Inhaling its vapor can be fatal.
2. Odor: It has a faint, bitter almond odor, although not everyone can detect it.
3. Flammability: The vapor of hydrogen cyanide is flammable and potentially explosive.
4. Historical Discovery: Swedish chemist Carl Wilhelm Scheele discovered hydrogen cyanide in 1782 by preparing it from the pigment Prussian blue.

Remember to handle this substance with extreme caution due to its toxicity and flammability.

NOTE 

NITRILE is any of a class of organic compounds having molecular structures in which a cyano group (―C ≡ N) is attached to a carbon atom (C). Nitriles are colourless solids or liquids with distinctive odours. Also called: Cyano Compound.