A generic term referring to a class of colorless, volatile, flammable liquid hydrocarbon mixtures. Naphtha is produced through fractionation of petroleum, natural gas or coal tar and is one of the highest-volume liquid fractions of crude oil. Light naphtha (a.k.a. natural gasoline or straight run gasoline) generally ranges from C5 to C7. Light naphtha is a major raw material for production of gasoline, petrochemicals (especially ethylene), and solvents. Chevron Phillips Chemical is also able to use light naphtha as a feedstock to its Aromax® process.