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Phosgene · Fosgene · Фосген · Fosgeno · Phosgen · فوسجين · Fosgen · Фосген · Φωσγένιο · فسژن · Phosgène · פוסגן

Phosgene is an acyl chloride obtained by substitution of both hydrogens of formaldehyde by chlorine. It is functionally related to a formaldehyde. Phosgene appears as a chemical warfare choking agent. Extremely toxic. A colorless gas or very low-boiling, volatile liquid with an odor of new-mown hay or green corn.