Overview
(-)-alpha-Pinene is a naturally occurring monoterpene found in the essential oils of many coniferous trees, particularly pine trees. It is one of the two isomers of alpha-pinene, with the other being (+)-alpha-pinene. The (-)-alpha-pinene isomer is known for its distinct pine-like aroma and is widely used in the fragrance and flavor industries. In addition to its aromatic properties, (-)-alpha-pinene serves as a valuable chemical intermediate in the synthesis of other compounds, including terpineol and camphor. Its versatility and natural origin make it a popular choice in various industrial applications.
Physical and Chemical Properties
(-)-alpha-Pinene is a colorless liquid with a characteristic pine-like odor. It has a molecular weight of 136.23 g/mol and a boiling point of 156°C. The compound is insoluble in water but readily dissolves in organic solvents such as ethanol, ether, and acetone. Chemically, (-)-alpha-pinene is highly reactive due to its double bond, making it a useful intermediate in organic synthesis. It is also flammable and volatile, requiring careful handling and storage to prevent accidents.
Main Applications
The primary use of (-)-alpha-pinene is in the fragrance and flavor industries, where it imparts a fresh, pine-like scent to perfumes, soaps, and cleaning products. It is also used as a flavoring agent in food and beverages. In the chemical industry, (-)-alpha-pinene serves as a precursor for the synthesis of other terpenes, such as terpineol and camphor. Additionally, it is used as a solvent in some industrial processes and as a component in insect repellents.
Safety and Storage
(-)-alpha-Pinene is flammable and should be stored in a cool, dry, well-ventilated area away from heat sources and open flames. It is also important to keep the compound in tightly sealed containers to prevent evaporation and contamination. Exposure to (-)-alpha-pinene may cause skin and eye irritation. Proper personal protective equipment, such as gloves and goggles, should be worn when handling the chemical. In case of contact, rinse immediately with plenty of water and seek medical attention if necessary.
B2B Procurement Guide
When procuring (-)-alpha-pinene for industrial use, it is essential to verify the purity and quality of the product. Reputable suppliers should provide certificates of analysis (CoA) and material safety data sheets (MSDS). Buyers should also consider the intended application and required specifications, such as purity levels and packaging options. Bulk purchases may offer cost savings, but storage and handling requirements must be carefully evaluated to ensure safety and product integrity.
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