when was zyklon originally made
Zyklon B (. [tsykloËn ËbeË] ; anglicized /ËzaÉªklÉn ËbiË/ or translated Cyclone B) was the trade name of a cyanide-based pesticide invented in Germany in the early 1920s. It consisted of hydrogen cyanide (prussic acid), a warning eye irritant, and one of several adsorbents such as diatomaceous earth.