Overview
Nonadecanal, also known as aldehyde C19, is a long-chain fatty aldehyde with a floral-waxy odor profile. It belongs to the aliphatic aldehyde family and is primarily used in high-end perfumery and flavor formulations. Industrially, it serves as a precursor in the synthesis of other specialty chemicals. Its molecular structure (C19H38O) consists of a 19-carbon chain with a terminal aldehyde group, contributing to its moderate volatility and solubility in organic solvents. The compound is typically synthesized via oxidation of nonadecanol or through hydroformylation reactions.
Physical and Chemical Properties
Nonadecanal is a colorless to faint yellow liquid at room temperature, with a density close to 0.82 g/cm³. Its high boiling point (~350°C) makes it suitable for applications requiring thermal stability. The compound is hydrophobic, insoluble in water, but readily dissolves in alcohols, ethers, and oils. Key chemical properties include its susceptibility to oxidation, which requires inert storage conditions, and its reactivity with reducing agents. Its characteristic waxy-floral odor is valued in fragrance compositions, where it acts as a fixative to prolong scent longevity.
Main Applications
In perfumery, nonadecanal is used as a niche fragrance ingredient, particularly in floral and musky accords. It contributes depth and persistence to luxury perfumes and cosmetic products. The flavor industry employs it in trace amounts to impart creamy, fatty notes to food additives. Industrially, it serves as an intermediate for synthesizing lubricants, plasticizers, and surfactants. Its long hydrocarbon chain makes it useful in coatings and polymer modifications, where aldehyde functionality enables cross-linking reactions.
Safety and Storage
Nonadecanal requires careful handling due to potential skin and eye irritation. PPE such as nitrile gloves and goggles are recommended. Storage should be in tightly sealed containers under nitrogen or argon to prevent oxidation, ideally at temperatures below 25°C. Spills should be contained with absorbent materials like vermiculite. Disposal must comply with local regulations for organic compounds. SDS documentation typically lists it as non-hazardous for transport but advises against prolonged inhalation exposure.
B2B Procurement Guide
Buyers should prioritize suppliers with ISO 9001 certification and batch-specific COAs (Certificates of Analysis) confirming purity (≥95%). Key procurement metrics include odor consistency, peroxide value (indicating oxidation), and residual alcohol content. Bulk pricing is often negotiable for quantities above 100 kg, with lead times of 2–4 weeks. Consider regional logistics: the compound may solidify in cold climates, requiring heated transport. Preferred packaging includes amber glass bottles or lined steel drums for large orders.
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