tabun, liquid chemical compound used as a nerve gas. It boils at 240°C; with some decomposition. The liquid is colorless to brownish; its vapors have a fruity odor similar to that of bitter almonds. The liquid is absorbed through the skin, but the vapor is not. Although tabun is destroyed by its reaction with bleaching powder, the poisonous gas cyanogen chloride is produced. Chemically, tabun is cyanodimethylaminoethoxyphosphine oxide.

Tabun-Khara-Obo is a meteorite crater in the Dornogovi Aimag (province) the south-east of Mongolia.

The crater, which is exposed at the surface, is 1.3 km in diameter and has an estimated age of 150 ± 20 million years (Upper Jurassic).

External links

• Earth Impact Database