The chemical engineer typically uses the principles of mathematics, chemistry, physics and engineering sciences to creatively solve technical, commercial, and social problems arising in industries which manufacture products by chemical reactions. Chemical reactions are everywhere. These solutions must respond to economic constraints as well as social, ethical, environmental and safety implications.
The chemical engineer may also apply these principles in related fields where the management of chemical transformations is important, such as preservation of the environment, pharmaceutical manufacturing, bio-engineering or the creation of new medical technology. Finally, the chemical engineer can apply understanding of fundamental principles to fields that interact indirectly with chemical technology, such as industrial management and patent law.