This oil is used to some extent in perfumery, in the compounding of artificial pine needle oils, pine fragrances and air fresheners. tsca definition 2008: any of the volatile predominantly terpenic fractions or distillates resulting from the solvent extraction of, gum, collection from, or pulping of softwoods. composed primarily of c10h16 terpene hydrocarbons: alpha-pinene, beta-pinene, limonene, 3-carene, camphene. may contain other acyclic, monocyclic, or bicyclic terpenes, oxygenated terpenes, and anethole. exact composition varies with refining methods and the age, location, and species of the softwood source. the concrete oleoresin obtained from pinus palustris mill. (pinaceae) and other species of pinus. it contains a volatile oil, to which its properties are due, and to which form it is generally used. (dorland, 28th ed) turpentine is used as a solvent and an experimental irritant in biomedical research. turpentine toxicity is of medical interest.