A colorless crystalline strong that may be very poisonous (0.1 g could well be a lethal dose). Examination of your sound and vapor states implies a dimerized structure of As4O6. During the processing of As2O3 the oxide is Typically minimized withcarbon: 2As2O3+3C?→As4+3CO2 The reaction is endothermic and is also performed http://https//chemscenter.com