Lewisite (L) is an organoarsenic compound. Liquid lewisite has faster effects than lewisite vapor. Other treatment for lewisite exposure is primarily supportive. The effects of Lewisite are immediate. It is also used as an antidote to the chemical weapon Lewisite. The chemical weapons agreement will assist Russia in disposing of its lewisite stockpiles. It is thought that he was experimenting with Lewisite. This stockpile of chemical weapons included of mustard agent, lewisite, adamsite, and chloroacetophenone. Mixing lewisite with distilled mustard lowers the freezing point to . British anti-lewisite, also called dimercaprol, is the antidote for lewisite. Producing or stockpiling lewisite was banned by the Chemical Weapons Convention. Chemically, dimercaprol binds to the arsenic in lewisite. The most severe consequences of eye exposure to lewisite are globe perforation and blindness. As of 1998, the lewisite production unit was still not completely disassembled.