It is a colourless odourless nerve gas. It belongs to organophosphate chemical group. Most of the moderninsecticides 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.

 Chemical Weapons