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Victor Ivanovich Kholstov was appointed as Director General of Russian Munitions Agency
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Lewisite (L, dichloro(2-chlorovinyl)arsine) - vesicant, which affects eyes, skin and respiratory tract in case of direct contact. After resorption it causes the increase of capillary permeability, resulting in shock and injury of organ.
Molecular formula: C2H2AsCl3
Molecular weight: 207.31
Molecular structure:

Lewisite

Acute toxicity:
Minimum lethal concentration(LCL0) (inhalation; human): 55.5 mg/m3
Median lethal dose (LD50) (skin application; rat): 15 mg/kg
Median lethal dose (LD50) (skin application; mouse): 12 mg/kg
Median lethal dose (LD50) (skin application; rabbit): 4 mg/kg
Median lethal dose (LD50) (skin application; guinea pig): 12 mg/kg
Median lethal dose (LD50) (skin application; dog): 15 mg/kg