Dicarboxylic acids are a fundamental class of organic compounds, characterized by the presence of two carboxyl functional groups. Their bifunctional nature makes them exceptionally versatile building blocks in organic synthesis, particularly for polymerization and the creation of specialty chemicals. Among these, Hexadecanedioic Acid (CAS 505-54-4) stands out due to its long aliphatic chain, offering unique physical and chemical properties that dictate its wide range of industrial applications. For researchers and buyers in the chemical and pharmaceutical sectors, a thorough understanding of these properties is crucial for successful sourcing and application.

The physical properties of Hexadecanedioic Acid are a direct consequence of its molecular structure. With a molecular formula of C16H30O4 and a molecular weight of 286.41, it presents as a white powder. Its relatively high melting point, typically in the range of 120-128°C, is indicative of strong intermolecular forces, including hydrogen bonding between the carboxyl groups. This solid state at room temperature, combined with its purity (often ≥97%), makes it convenient to handle and store, especially when compared to liquid acids. For procurement managers seeking bulk quantities, understanding its physical form is key for logistics and storage planning.

Chemically, the two carboxyl groups are the primary sites of reactivity. They can undergo esterification with alcohols to form diesters, amidation with amines to form diamides (a key step in polyamide synthesis), or reduction to form diols. The length of the carbon chain (16 carbons) influences the solubility and flexibility of derivatives. Hexadecanedioic Acid is generally soluble in organic solvents but has limited solubility in water, a characteristic that can be leveraged in various reaction conditions or formulation processes. Its stability is generally good, though it is incompatible with strong bases and oxidizing agents, as noted by its common chemical properties data.

The applications of Hexadecanedioic Acid are intimately linked to these properties. Its bifunctionality and long chain are ideal for synthesizing high-molecular-weight polymers like polyamides and polyesters, where it contributes flexibility and improves thermal and mechanical properties. Furthermore, its structure is beneficial for creating specialty surfactants and lubricants that require specific hydrophobicity/hydrophilicity balances and excellent thermal stability. Researchers designing novel materials often consult detailed product specifications when looking to buy Hexadecanedioic Acid, ensuring the CAS number 505-54-4 and associated purity levels meet their experimental or production requirements.

When sourcing Hexadecanedioic Acid, it is vital to consider the manufacturer's ability to consistently deliver a product with well-defined properties and purity. Direct engagement with manufacturers in regions like China, known for their chemical production capabilities, can provide access to competitive pricing and a reliable supply. Understanding the chemical and physical characteristics of Hexadecanedioic Acid allows buyers to make informed decisions and leverage its potential in their synthesis endeavors.