Tabun (GA) nerve agent

Tabun (GA) is a colorless to brownish liquid with a colorless vapor at 20 deg C (68 degrees F). It has no odor in pure form, but a slightly fruity odor when diluted. It is used as a fast-acting, lethal casualty agent. Tabun is the first of the G-series nerve agents, along with GB ( sarin ), GD (soman) and GF (cyclosarin). Tabun is more volatile than VX , but less volatile than sarin . The higher a chemical's volatility, the more likely it will evaporate from a liquid stage into a...