Methods of dissemination and physical characteristics

Nerve agent ways of dissemination: 

Indoor Air: Nerve agents can be released into indoor air as a liquid spray (aerosol) or as a vapor.

Water: Nerve agents can contaminate water, although they will decompose slowly.

Food: Nerve agents can contaminate food.

Outdoor Air: Nerve agents can be released into outdoor air as a liquid spray (aerosol) or as a vapor.

Agricultural: When nerve agents are released into the air as a liquid spray (aerosol), it has the potential to contaminate agricultural products. If they are released as a vapor, it is highly unlikely to contaminate agricultural products.

Nerve Agents physical characteristics:

SARIN: Clear, colorless liquid. 

SOMAN: Clear, colorless, liquid. Discolors with aging to dark brown. Gives off colorless vapor. 

TABUN: Clear, amber-colored, oily liquid.  

VX: Clear, amber-colored, oily liquid.