Chloroacetic Acid Chloroacetic acid is a monohalogenated acetic acid (m-HAA) that is used as a photosensitizing agent and also in industrial synthesis of certain organic chemicals such as indigoid dyes. Chloroacetic acid is used in the topical treatment of warts in some countries and also as an herbicide and a bleaching agent for silkworm cocoons. The general population can be exposed to...