This chapter is limited to an outline in the chemistry of arsenic compounds which have likely environmental value. A list of these compounds is supplied in Table two-1. During the processing of As2O3 the oxide is Commonly lessened withcarbon: 2As2O3+3C?→As4+3CO2 The reaction is endothermic and is performed at five hundred–800℃.The http://https//chemscenter.com