Distilled Mustard (HD) blister agent

Distilled mustard (HD) is a blister agent that has been purified by washing and vacuum distillation. It is a colorless liquid with a colorless vapor at 20 deg C (68 deg F) and has a garlic-like odor. HD is typically used as a delayed-action casualty agent and is highly persistent. Mustard has been known to last for decades if protected from the elements (e.g., buried).

Blister agents can be used to produce casualties, restrict the use of terrain, material and installations, as...