Dioctyl Adipate, commonly known as DOA, is a highly efficient monomeric ester plasticizer recognized for its exceptional performance in a wide range of polymer applications. With the chemical formula C22H42O4 and CAS number 123-79-5, DOA stands out as a preferred choice, especially when superior low-temperature flexibility and cold resistance are paramount. It is synthesized through a meticulous process involving the reaction of adipic acid and 2-ethylhexanol, typically in the presence of a catalyst. Modern industrial trends increasingly favor solid acid catalysts due to their enhanced catalytic activity, selectivity, and environmental benefits, marking a significant advancement in the production of this vital compound.

This organic compound typically appears as a clear, colorless to pale yellowish oily liquid with a very faint, almost imperceptible aroma. Its physical properties underscore its utility: it has a molar mass of approximately 370.57 g/mol and a density of around 920 kg/m³. A notable characteristic is its very low melting point of -67.8 °C and a boiling point of 214 °C, which contributes significantly to its effectiveness as a cold-resistant plasticizer. While sparingly soluble in water (approximately 0.78 mg/L at 22°C), DOA exhibits excellent compatibility with a broad spectrum of polymers, including polyvinyl chloride (PVC), various synthetic rubbers, nitrocellulose, and ethyl cellulose, making it highly versatile in formulation.

The applications of Dioctyl Adipate are remarkably diverse, driven by its unique combination of properties. In the plastics industry, DOA is extensively used as a primary plasticizer for PVC and other chloroethylene polymers, imparting superior flexibility and processing characteristics. It is especially vital in products requiring exceptional performance in cold environments, such as cold-resisting agricultural plastic films, freezing food packaging, and insulation for cables and electric wires. Its ability to lower the glass transition temperature of polymers makes materials more pliable and durable at lower temperatures, ensuring product integrity and longevity.

Beyond its prevalent role in PVC, DOA finds significant utility across other sectors. It serves as an effective dispersant for pigments in paints, ensuring uniform color distribution and enhancing product aesthetics. In the realm of lubricants, Dioctyl Adipate functions as a Group V synthetic base oil, particularly valued for its low-temperature performance and ability to improve the properties of Group III and Group IV base oils when blended. It is also utilized in specialized applications like aircraft and industrial lubricants, textile spin finishes, and as an emollient or plasticizer in pharmaceutical and cosmetic formulations. Its non-toxic nature allows for its use in food-contact materials, including food packaging films, seals, and gaskets for containers, meeting stringent safety standards.

Choosing a reliable Dioctyl Adipate manufacturer is paramount for ensuring consistent quality and performance in your products. A reputable DOA supplier will provide Dioctyl Adipate that adheres to strict specifications, guaranteeing its effectiveness in diverse applications. For those looking to buy Dioctyl Adipate, it is advisable to inquire about the purity level and typical specifications to ensure it meets your specific requirements. The Dioctyl Adipate price can fluctuate based on market dynamics and order volume, making it beneficial to engage with suppliers who offer competitive pricing alongside robust quality assurance. Securing a dependable source for your DOA purchase is crucial for seamless production and product excellence.