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Chemical Agents of Opportunity for Terrorism: TICs & TIMs

Chemical Agents of Opportunity for Terrorism: TICs & TIMs

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<strong>Chemical</strong> <strong>Agents</strong> <strong>of</strong> <strong>Opportunity</strong> <strong>for</strong> <strong>Terrorism</strong><br />

Training Support Package<br />

Participant Guide<br />

Slide 50<br />

<strong>Chemical</strong> <strong>Agents</strong> <strong>of</strong> <strong>Opportunity</strong> <strong>for</strong> <strong>Terrorism</strong>:<br />

<strong>TICs</strong> & <strong>TIMs</strong><br />

Phosphine (PH 3 )<br />

• Forms<br />

– Gas (vapor density 1.17)<br />

– Aluminum and Zinc phosphide<br />

pellets<br />

• Smells like garlic and rotten fish<br />

• Many uses in agriculture & structural<br />

pest control<br />

• Used in semiconductor industry<br />

• Concentration effects<br />

– 400-600 ppm - severe toxicity in<br />

30 min<br />

– 1000 ppm - immediate death<br />

Module Four – Cyanide & Fumigants<br />

50<br />

Phosphides, typically distributed in pellet <strong>for</strong>m, are commonly used in agricultural<br />

settings <strong>for</strong> the fumigation <strong>of</strong> grain and widely used in the semiconductor industry. In<br />

gaseous <strong>for</strong>m phosphine is heavier than air and produces severe toxic effects above 400<br />

ppm. Exposures exceeding 1000ppm usually lead to immediate death.<br />

Phosphine is the common name <strong>for</strong> phosphorus hydride (PH3). It is a colorless,<br />

flammable gas with a boiling point <strong>of</strong> -88 °C at standard pressure. Pure phosphine is<br />

odorless, but technical grade phosphine has a highly unpleasant odor like garlic or<br />

rotting fish, due to the presence <strong>of</strong> substituted phosphine and diphosphine (P2H4).<br />

December 2008 Version 2.0 Page 237

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