Aromatics are a wide group of compounds that include benzene and its derivatives. Some aromatic hydrocarbons in crude oil are: benzene, toluene, ortho-xylene, meta-xylene, para-xylene, naphthalene, cumene, etc. Aromatic products are used in the preparation and production of polyesters, synthetic fibers, paints, resins, disposable bottles, nylon detergents, pharmaceutical compounds, pesticides, industrial solvents, etc.