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Beta-pinene, a specific isomer of pinene, is distinguished by its exocyclic double bond. It is a significant component in the essential oils derived from a wide variety of plants and plays a role as a plant metabolite. Structurally, it is classified as a monoterpene, which is a category of organic compounds commonly found in plants. Beta-pinene is one of two isomers of pinene, the other being alpha-pinene. It is a colorless liquid that is soluble in alcohol but insoluble in water. Beta-pinene is noted for its distinct woody-green, pine-like aroma, contributing to the characteristic scent of many plants and essential oils. beta-pinene is one of the most abundant compounds emitted by forest trees. When exposed to air, it undergoes oxidation, leading to the formation of allylic products predominantly belonging to the pinocarveol and myrtenol families. This process of oxidation significantly alters the chemical composition and properties of beta-pinene, showcasing its reactive nature in the presence of air.

GHS Hazard Statements

• H226 (99.87%): Flammable liquid and vapor [Warning Flammable liquids]

• H304 (99.87%): May be fatal if swallowed and enters airways [Danger Aspiration hazard]

• H315 (82.2%): Causes skin irritation [Warning Skin corrosion/irritation]

• H317 (97.69%): May cause an allergic skin reaction [Warning Sensitization, Skin]

• H400 (25.48%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]

• H410 (29.54%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]

Chemical and Physical Properties

Source: PubChem