Author: Health Institution of the Protectorate of Bohemia and Moravia

Directives for the Use of Prussic Acid (Zyklon) for the Destruction of Vermin (Disinfestation)

Translation of Document No. NI-9912 Office of Chief Counsel of War Crimes I. Properties of Prussic Acid (Hydrocyanic Acid) Prussic acid is a gas which is generated by evaporation. Boiling point: 25 degrees Centigrade Freezing point: -15 degrees Centigrade Specific gravity: 0-69 Steam density: 0-97 (Air: 1-0) The liquid evaporates easily. Liquid: transparent, colourless. Smell:…

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