What Is Ricin?
Ricin is a poison that can be made from the waste left over from processing
Castor Bean Plant
It can be in the form of a powder, a mist, or a pellet, or it can be
dissolved in water or weak acid.
It is a stable substance. For example, it is not affected much by extreme
conditions such as very hot or very cold temperatures.
National Terror Alert Resource & Information Center 2003