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Hydrogen cyanide gas released by sodium cyanide has a distinctive bitter almond odor (others describe a musty “old sneakers smell”), but a large proportion of people cannot detect it the odor does not provide adequate warning of hazardous concentrations. Sodium cyanide is used commercially for fumigation, electroplating, extracting gold and silver from ores, and chemical manufacturing. It has whole-body (systemic) effects, particularly affecting those organ systems most sensitive to low oxygen levels: the central nervous system (brain), the cardiovascular system (heart and blood vessels), and the pulmonary system (lungs).

Exposure to sodium cyanide can be rapidly fatal. DESCRIPTION: Sodium cyanide releases hydrogen cyanide gas, a highly toxic chemical asphyxiant that interferes with the body’s ability to use oxygen.APPEARANCE: White crystalline or granular powder.