Chemicals by Category
![chem-by-category chemical by category](/chemicalemergencies/images/chem-by-category-small.jpg?_=33176)
CDC/ATSDR scientists have grouped chemicals into categories based on similarities in how they affect health or the environment.
Blister Agents (Vesicants)
![Blister Agents Torso](/chemicalemergencies/images/chemical-category/Blister_Agents_Torso.png?_=71254)
![Blister_Agents_Foot Blister Agents Foot](/chemicalemergencies/images/chemical-category/Blister_Agents_Foot-small.png?_=45264)
Chemicals causing severe blisters in the eyes, skin, and lining of the nose, sinuses, mouth, throat, and lungs (respiratory tract).
- Lewisite (L, L-1, L-2, L-3)
- Nitrogen mustard (HN-1, HN-2, HN-3)
- Phosgene oxime (CX)
- Sulfur mustard (H) (mustard gas)
Choking/Lung Agents (Pulmonary)
![Pulmonary Agents](/chemicalemergencies/images/chemical-category/Pulmonary_Agents.png?_=45266)
Chemicals causing severe irritation or swelling the lining of the respiratory tract.
Nerve Agents
![Nerve Agents](/chemicalemergencies/images/chemical-category/Nerve_Agents.png?_=45270)
Chemicals that prevent the brain and nerves to the muscles and organs (nervous system) from working properly.
G agents
V agents
Additional Chemicals by Category