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U.S. Department of Health and Human Services

Chemical Emergencies

Castor beans used in making ricin.  Image courtesy of USDA.    A chemical emergency occurs when a hazardous chemical has been released and the release has the potential for harming people's health. Chemical releases can be unintentional, as in the case of an industrial accident, or intentional, as in the case of a terrorist attack.


List of Agents:


Preparation and Planning:
References provided courtesy of Center for Disease Control and Radiation Emergency Medical Management.

  • This page last reviewed: October 24, 2018