2-Undecenal(CAS: 2463-77-6)

2-Undecenal is a clear, colorless liquid with a strong, sweet, fruity odor. Its molecular weight is approximately 170.31 g/mol. The compound is poorly soluble in water but miscible with ethanol and other organic solvents. It is moderately reactive, particularly towards oxidizing agents and can undergo autoxidation. It has a melting point of -25°C and a boiling point of 154°C.

2-Undecenal is commonly synthesized via the hydroformylation of 1-undecene using a cobalt or rhodium-based catalyst in the presence of carbon monoxide and hydrogen. The reaction is typically carried out at elevated temperatures and pressures. The selectivity and yield can be improved by adjusting the catalyst system and reaction conditions.

2-Undecenal is used in various industries. It serves as a fragrance and flavor additive in the perfume and food industries. It is also used in the production of synthetic musks, as a starting material in the synthesis of other compounds, and in the formulation of certain pesticides and herbicides. Additionally, it is utilized in the cosmetic industry and as a chemical intermediate.

When handling 2-Undecenal, it is important to use appropriate personal protective equipment (PPE), including safety goggles, gloves, and a lab coat. Handle it in a well-ventilated area or a fume hood to avoid inhalation of vapors. Store it in a cool, dry place away from direct sunlight and heat sources. In case of a spill, immediately contain it and clean up using appropriate procedures, following the Material Safety Data Sheet (MSDS) guidelines.