ATSDR - Toxic Substances - Hydrogen Cyanide (HCN)
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Hydrogen Cyanide (HCN)

CAS ID #: 74-90-8, 143-33-9,000151-50-8,000592-01-8, 000544-92-3, 506-61-6, 0460-19-5, 506-77-4

Affected Organ Systems: None

Cancer Effects: None

Chemical Classification: Inorganic substances

Summary: 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. The vapor is flammable and potentially explosive. Hydrogen cyanide has a faint, bitter almond odor and a bitter, burning taste. It is soluble in water and is often used as a 96% aqueous solution.

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