Trans-2-nonenal (CAS 18829-56-6) is a fascinating unsaturated aldehyde, widely recognized for its unique olfactory profile and diverse industrial applications. Also known by names such as (2E)-2-Nonenal or (E)-2-Nonenal, this colorless to pale yellow liquid holds significant importance in various sectors due to its distinctive properties and reactivity. As a compound with the molecular formula C9H16O and a molecular weight of approximately 140.22 g/mol, Trans-2-nonenal stands out as a key ingredient for innovation.

Chemically, Trans-2-nonenal exhibits a range of defining characteristics. It has a melting point estimated around -28°C and a boiling point of 88-90°C at 12 mm Hg, or 188-190°C at standard pressure. Its density is about 0.846 g/mL at 25°C, and it is notably insoluble in water. The flash point for this compound is approximately 79-84°C, indicating its relative flammability. With a refractive index of around 1.453, its clarity and consistency are optimal for a variety of precise applications.

One of the most compelling aspects of Trans-2-nonenal is its complex aroma profile. It is frequently described as possessing green, cucumber, fatty, orris, and even iris, citrus, or violet notes. This makes it a highly sought-after component in the flavor and fragrance industry. Beyond its pleasant attributes, Trans-2-nonenal is also known as a principal determinant of beer staling, where it can impart undesirable 'wet paper' or 'cardboard' off-notes. Intriguingly, research has also linked this molecule to human body odor alterations during aging, often referred to as 'geriatric fragrance,' due to its natural presence in aged human skin lipids.

The applications of Trans-2-nonenal extend far beyond its primary role as an aroma chemical. In organic synthesis, it serves as a valuable raw material and intermediate for creating more complex chemical structures, including pharmaceuticals and agrochemicals. Its specific reactivity makes it an ideal building block for advanced chemical reactions. In the realm of cosmetics, its appealing fragrance properties lead to its incorporation into lotions, creams, and other personal care items, enhancing the sensory experience for consumers. Furthermore, its potential calming properties are explored in aromatherapy, making it suitable for essential oils and diffusers aimed at creating relaxing environments. Some studies also suggest its possible antimicrobial properties, which could be beneficial in food preservation, extending the shelf life of certain products.

For optimal quality and longevity, Trans-2-nonenal should be stored in a well-closed, light-resistant, dry, and cool place, ideally at around +4°C. Proper handling, including purging the headspace with nitrogen, helps maintain its stability and purity over time. NINGBO INNO PHARMCHEM CO.,LTD. is a reputable manufacturer and supplier committed to providing high-quality Trans-2-nonenal. We ensure rigorous quality control and offer comprehensive product documentation. For those looking to buy or purchase this versatile chemical, competitive price options are available for various packaging sizes, from laboratory quantities to bulk orders. We invite interested parties to inquire about our product specifications and current availability to meet their specific industrial and research needs.