The boundaries of the chemical industry, then, are somewhat confused. Its primary raw materials are the fossil fuels (coal, gas, and Air Compressor For Production Of Chemical Raw Materials china petroleum), air flow, drinking water, salt, limestone, sulfur or an equivalent, and some specialized recycleables for special items, such as for example phosphates and the mineral fluorspar.

The chemical industry comprises the firms that produce commercial chemicals. Central to the modern world economy, it converts recycleables (oil, gas, air, drinking water, metals, and minerals) into more than 70,000 different products.