Production quantities of basic chemicals in

Final products in chemical industry are produced by chemical reactions of intermediate and basic chemicals. These final products are widely used in almost all other industries. Final chemicals can be categorized into 

body care products (detergents, soaps, cosmetics, etc.) 

Among these categories, pharmaceuticals and body care products set up own subindustries due to the special characters of their products and production processes. These companies directly serve (private) consumer markets. The remaining three categories comprise classic chemical companies mainly providing intermediate products for other industries such as mechanical engineering industry, building industry, textile industry, and plastics industry. 

In the next section chemical production processes are characterized and categorized. The theoretical modelling of the underlying chemical reactions is described subsequently. Chemical production processes realise chemical reactions in industrial scale in chemical plants. Based on models of chemical reactions, methods are provided to describe the behaviour of chemical production processes. 

Production in chemical industry is in many aspects different from common industries. In most industries final products are produced by mechanical transformation processes such as assembling or machining. In contrast, in chemical industry the chemical and/or physical properties of substances are altered. Most chemical production processes rely on chemical reactions aiming at the transformation of reactants into substances of interest. The term chemical reactions refers to changes of the reactants molecular structures. Be- 

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