vesicating agent

ves·i·cat·ing agent

(ves'i-kāt-ing ā'jĕnt)
A toxic chemical-warfare agent that causes vesicles and bullae.
References in periodicals archive ?
The crushing and wiping of the Paederus beetle on the skin causes an acute dermatitis within 24 hours, corresponding in shape and dimension to the area affected by the release of the vesicating agent paederin found in the haemolymph of the beetle.
Vesicating Agents This category of agents includes "mustard," the name apparently stemming from the compound's smell, taste, and color.