Turpentine oil is a kind of fluid isolated from live trees, mainly pines. It consists of terpenes including monoterpenes, alpha-pinene, beta-pinene and some amount of careen, camphene, dipentene, and terpinolene. It can be used as a solvent and as a source of materials for organic synthesis. For its application in solvent, it can be used for thinning oil-based paints that are useful for the manufacturing of varnishes. In organic synthesis, it can be used for the synthesis of fragrant chemical compounds such as camphor, linalool and alpha-terpineol. It can also be used for large-scale synthesis of bundles of aligned carbon nanotubes. It can also be used as natural flavoring agent as food additive. Moreover, it can be used to synthesize pesticide as well as be used to facilitate the endodontic retreatment.