Arsenic trioxide is the principal merchandise of arsenic smelters. This oxide has immediate applications in industry—e.g., as being a glass decolorizing agent. Other commercially beneficial natural and inorganic arsenic derivatives are organized from it. Within the processing of As2O3 the oxide is Usually decreased withcarbon: 2As2O3+3C?→As4+3CO2 The response is endothermic http://https//chemscenter.com