Cyanide compounds are chemical substances that contain the cyanide ion (CN⁻), which consists of a carbon atom triple-bonded to a nitrogen atom. These compounds can be found in various forms, including gaseous hydrogen cyanide (HCN) and solid sodium cyanide (NaCN). Cyanide is known for its high toxicity and can interfere with the body's ability to use oxygen, making it dangerous to humans and animals. Cyanide compounds are used in several industrial applications, such as in the extraction of gold and silver from ores, and in the production of certain plastics and chemicals. Due to their hazardous nature, strict regulations govern their use and disposal to prevent environmental contamination and health risks.