Sarin :It is a colourless odourless nerve gas. It belongs to organophosphate chemical group. Most of the modern insecticides too belong to this family of chemicals. US, Russia and Iraq had produced Sarin. By the end of World War I, most European powers
had integrated gas warfare capabilities into their armies at some level, and
nerve gases such as sarin, small amounts of which cause paralysis or death, were developed
in Germany between the two world wars. Despite the availability of gases,
only Japan used them—in China—as World War II became global. After World
War II, knowledge of nerve-gas manufacture became widespread. Soman : is also a nerve agent. It is a volatile substance effective mainly through inhalation. Tabun : It was invented by a German chemist, Gerhard Schrader, in the mid 1930s. It is a colourless or brownish as a liquid and odourless as a vapour. Schrader worked for IG Farben, a company that later used slave labour from the Birkenau concentration camp to produce its products. Another one of Fraben's invention was Zyklon-B, a type of hydrogen cyanide used by the Nazis to gas victims in those same camps during World War II. Tabun is also an organophosphate like many pesticides is among the easiest to nerve gases to manufacture.
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