Raw materials of chemical industry , the relationship of environmental

Raw materials of chemical industry is differentiated according to the natural and economic characteristics of individual countries and regions. In some areas - coal, coke oven gas , others - oil, oil associated gas, salt, pyrite , gas ferrous and non-ferrous metallurgy, in the third - salt and so on.
Raw factor affects the specialization territorial combinations of chemical production . Chemical production in the improvement of technological methods may in turn affect the resource base .
Chemical industry is associated with many branches. It is combined with refining , coking coal, ferrous and nonferrous metallurgy , timber industry .