A colorless crystalline sound that may be very poisonous (0.1 g could well be a lethal dose). Evaluation from the stable and vapor states implies a dimerized structure of As4O6. Within the processing of As2O3 the oxide is Usually reduced withcarbon: 2As2O3+3C?→As4+3CO2 The response is endothermic which is completed at http://https//chemscenter.com