The pursuit of advanced materials with tailored properties often hinges on the precise selection of chemical intermediates and additives. Dioctyl Sebacate (CAS 2432-87-3) is a prime example of such a versatile compound, offering a unique scientific profile that makes it invaluable across various high-tech industries. From its ester linkage to its branched alkyl chains, understanding the chemistry of Dioctyl Sebacate unlocks its potential for innovation.

Chemical Structure and Its Impact

Dioctyl Sebacate is the diester formed from sebacic acid (a linear dicarboxylic acid) and 2-ethylhexanol (a branched alcohol). The chemical formula C26H50O4 encapsulates this structure. The long, linear sebacic acid backbone provides flexibility, while the branched 2-ethylhexyl groups contribute to steric hindrance and disrupt close packing, which is key to its excellent low-temperature performance and low viscosity. This molecular architecture is the foundation of its utility as a plasticizer and lubricant base.

Key Physicochemical Properties

The scientifically relevant properties of Dioctyl Sebacate include:

  • Low Freezing Point: Its solidification point is around -55 °C, allowing it to remain liquid and functional in extremely cold conditions. This makes it ideal for aerospace lubricants and automotive fluids operating in frigid climates.
  • High Boiling Point and Low Volatility: With a boiling point of approximately 212 °C at 1 mm Hg, it exhibits low volatility. This property is crucial for applications where evaporation loss needs to be minimized, such as in long-life lubricants and high-temperature plasticizers.
  • Excellent Thermal and Oxidative Stability: The ester linkages, while susceptible to hydrolysis under extreme acidic or basic conditions, are generally stable at elevated temperatures in the absence of contaminants, contributing to the longevity of lubricants and the durability of plastic products.
  • Good Solvency: Dioctyl Sebacate is miscible with most organic solvents and oils, allowing for effective incorporation of other additives into lubricant formulations or efficient plasticization of polymers.
  • Low Viscosity Index: It typically has a relatively low viscosity index, meaning its viscosity changes moderately with temperature, which can be advantageous for certain lubricant applications.

Applications in Advanced Material Science

These properties translate into critical roles in advanced materials:

  • OLED Materials: While not a primary OLED material itself, its properties as a stable, low-volatility ester can make it suitable as a solvent or processing aid in the manufacture of some organic electronic components.
  • High-Performance Polymers: Beyond PVC, it can plasticize other resins like nitrocellulose and polymethyl methacrylate, enhancing their processing and performance characteristics.
  • Specialty Greases and Lubricants: Forms the base for synthetic greases and specialized industrial lubricants requiring extreme temperature performance.

Sourcing High-Purity Dioctyl Sebacate

For scientists and procurement managers in advanced materials and specialty chemicals sectors, securing high-purity Dioctyl Sebacate (CAS 2432-87-3) is essential. As a trusted manufacturer and supplier from China, we provide material that meets stringent quality standards. We encourage you to buy Dioctyl Sebacate from us to ensure the precise chemical properties your advanced applications demand. Contact us for technical data, pricing, and sample requests.