Cyanide is a rapidly acting, potentially deadly chemical that interferes with the body's ability to use oxygen.
Cyanide can be a colorless gas or liquid, such as hydrogen cyanide (HCN) or cyanogen chloride (CNCl).
Cyanide can also be a crystal (solid) form such as sodium cyanide (NaCN) or potassium cyanide (KCN).
In chemistry, cyanide is a chemical compound that contains a C≡N functional group.
This group, known as the cyano group, consists of a carbon atom triple-bonded to a nitrogen atom.
In inorganic cyanides, the cyanide group is present as the cyanide anion ⁻C≡N.
This anion is extremely poisonous.