Chemicals by Category
CDC/ATSDR scientists have grouped chemicals into categories based on similarities in how they affect health or the environment.
Blister Agents (Vesicants)
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)
Chemicals causing severe irritation or swelling the lining of the respiratory tract.
Nerve Agents
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