Jet fuels are used in aircrafts powered by turbojet or turboprop engines. They consist of hydrocarbons (paraffins, cycloparaffins, olefins, naphthenes and aromatics) and additives such as corrosion inhibitors, anti-icing additives and antioxidants. These additives depend on the intended use of the jet fuel, i.e. for civil or military aircrafts, for different climates or for special applications. Wide-cut fuels are a blend of kerosene and naphtha fractions.