A Solvent is a liquid that can dissolve a solid, liquid, or gaseous solute and then become a solution. The most common solvent in everyday life is water. The so-called organic solvent is the solvent of organic compounds containing carbon atoms. Solvents usually have relatively low boiling points and are easily volatile. Or it can be removed by distillation, leaving behind the dissolved substance. Therefore, the solvent cannot react chemically to the solute. They must be low active. Solvents can extract soluble compounds from mixtures, the most common example being hot water for brewing coffee or tea. Solvents are usually clear, colorless liquids, and most of them have a distinctive odor.

Naphtha, commonly known as light oil, white electric oil, or naphtha, is an intermediate of a hydrocarbon liquid used in the refining of crude oil. It consists of a mixture of different hydrocarbons, the main components of which are alkanes, cycloalkanes, or aromatics with 5 to 11 carbon atoms. This is usually done by desulphurization followed by catalytic reforming, which rearrangements or restructures the hydrocarbon molecules in the naphtha and breaks them into smaller molecules to produce a high-octane gasoline component (or gasoline). [1][2][3] There are hundreds of different petroleum crude oil sources worldwide, each with its own unique composition or content determination. There are also hundreds of global petroleum refineries, many designed to process specific crude oil or crude oil. This means that it is almost impossible to exist a definitive naphtha composition, as each refinery producing its own naphtha is unique to initial and final boiling points and other physical and compositive characteristics. In other words, naphtha is a general term, not a specific term.

In addition, naphtha can also be extracted from coal tar, tar sands, shale deposits, such as in Canada, in the gasification of wood and coal or in the dry distillation of biomass gasification to produce syngas which is then converted into liquid hydrocarbon products by the Fischer-Tropsch process.

Aromatic solvent oil is a chemical used in paints, coatings, inks, pesticides, aromatic refers to hydrocarbons containing benzene rings.