Sarin

Decomposes thermally to form a variety of phosphorus containing products as well as propylene. The rate of decomposition increases with increase in temperature, and in the presence of acids. At the boiling point of GB, under atmospheric conditions, decomposition is fairly rapid.

Complete decomposition after 2.5 hr at 150 deg C.

When heated to decomposition or reacted with steam, it emits very toxic fumes ...