Scientists often categorize hazardous chemicals by the type of chemical or by the effects a chemical would have on people exposed to it. The categories/types used by the Centers for Disease Control and Prevention are as follows:

Selecting a category will take you to the CDC Website

• Biotoxins
• Blister Agents/Vesicants
• Blood Agents
• Caustics (Acids)
• Choking/Lung/Pulmonary Agents
• Incapacitating Agents
• Long-Acting Anticoagulants
• Metals
• Nerve Agents
• Organic Solvents
• Riot Control Agents/Tear Gas
• Toxic Alcohols
• Vomiting Agents