Bio - Based / Green Solvents, High-Purity Solvents

Dioctyldecyl Sebacate

Dioctyl Sebacate, formally recognized by CAS number 122-62-3, is a high-performance linear diester derived from sebacic acid and 2-ethylhexanol. This organic compound is characterized as a clear, colorless to pale-yellow oily liquid that exhibits exceptional low-temperature flexibility and thermal stability. As a primary plasticizer, it is renowned for its low volatility and excellent resistance to extraction by water and soapy solutions. The molecular structure imparts a unique combination of high boiling point and low freezing point, making it indispensable in demanding industrial environments. Its chemical inertness ensures compatibility with various synthetic resins, particularly polyvinyl chloride, where it significantly enhances performance under extreme cold conditions. Furthermore, Dioctyl Sebacate maintains low viscosity across a broad temperature range, facilitating processing efficiency. Due to its superior dielectric properties and minimal impact on mechanical strength, it serves as a critical component in advanced polymer formulations, aerospace lubricants, and specialized chemical intermediates requiring precise rheological control.

Attributes

Key Features and Benefits

Exceptional low-temperature performance, providing polymers with flexibility down to minus sixty degrees Celsius without cracking.
High thermal stability and low volatility, ensuring minimal weight loss during high-temperature processing and long-term service life.
Outstanding resistance to leaching and hydrolysis, maintaining structural integrity even when exposed to water or humid conditions.
Excellent dielectric properties, making it an ideal choice for high-voltage cable insulation and electronic component encapsulation.
Superior light resistance and weathering capabilities, protecting end products from degradation caused by prolonged ultraviolet radiation exposure.

Specifications

Technical Highlights

Molecular Formula: C26H50O4 with a high molecular weight of 426.67 grams per mole for reduced migration.
Boiling Point: Approximately 212 degrees Celsius at 1 mmHg, indicating high thermal persistence and low evaporative loss.
Specific Gravity: Ranges from 0.912 to 0.918 at 25 degrees Celsius, ensuring compatible density for varied formulations.
Refractive Index: Typically measured at 1.449 to 1.451 at 20 degrees Celsius, crucial for optical clarity requirements.
Acid Value: Maintained below 0.1 mg KOH/g, indicating high purity and minimal residual acidic species during synthesis.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Primary plasticizer for PVC resins used in cold-storage gaskets, automotive interiors, and heavy-duty outdoor wire coatings.
Base fluid for synthetic aviation lubricants and jet engine oils requiring consistent viscosity across extreme temperature gradients.
Essential additive in rubber compounding, particularly for NBR and chloroprene, to improve processing and low-temperature elastic recovery.
High-performance solvent and carrier in pharmaceutical coatings and specialized ink formulations requiring low toxicity and high stability.
Critical component in the manufacturing of hydraulic fluids and greases used in arctic and high-altitude machinery environments.