Which of the following is a known blister agent?

Lewisite is a well-known blister agent, which falls under the category of chemical warfare agents. Blister agents are designed to cause severe skin and eye irritation as well as damage to the respiratory tract. Lewisite specifically is classified as an organic arsenical compound that was developed in the early 20th century, and it is notable for causing severe skin blisters upon contact, as well as systemic toxicity.

Its mechanism of action involves alkylation of cellular components, leading to cell damage and the formation of blisters. The symptoms of exposure can manifest quickly, often within minutes, making it a particularly dangerous and effective weapon in warfare scenarios.

Understanding Lewisite's effects helps military personnel and responders develop appropriate protective measures and treatments potentially necessary in the event of exposure. This knowledge is crucial for ensuring safety and readiness in environments where chemical agents may be employed.