Bio - Based / Green Solvents, High-Purity Solvents

Dioctyldecyl Azelate

Dioctyl Azelate, identified by CAS number 103-24-2, is a high-performance diester plasticizer synthesized through the esterification of azelaic acid with 2-ethylhexanol. This clear, colorless, and odorless oily liquid is renowned for its exceptional low-temperature flexibility and low volatility characteristics. As a linear aliphatic ester, it exhibits a unique molecular structure that provides superior resistance to extraction by water and soapy solutions compared to common phthalate-based plasticizers. Chemically, it possesses high thermal stability and excellent compatibility with various polymers, particularly polyvinyl chloride, nitrocellulose, and synthetic rubbers. Its performance profile makes it an ideal choice for specialized industrial applications where extreme environmental conditions are prevalent. The compound’s high boiling point and low freezing point ensure functional integrity across a broad thermal range, while its low viscosity contributes to ease of handling and processing in various manufacturing workflows, maintaining structural durability in demanding polymer matrices without compromising clarity, overall texture, or chemical stability.

Attributes

Key Features and Benefits

Superior Low-Temperature Performance: Provides exceptional flexibility and impact resistance to polymer compounds even in sub-zero environmental conditions.
Low Volatility: Exhibits extremely low vapor pressure, ensuring long-term retention within the polymer matrix and reducing fogging in sensitive applications.
Excellent Weathering Resistance: Offers robust stability against ultraviolet degradation and oxidative stress, maintaining physical properties during prolonged outdoor exposure.
High Solvating Power: Demonstrates rapid fusion and efficient processing characteristics when blended with polyvinyl chloride resins and various synthetic elastomers.
Extraction Resistance: Shows remarkable resistance to leaching by water and aqueous solutions, enhancing the lifecycle of products in humid environments.

Specifications

Technical Highlights

Molecular Formula: C25H48O4 with a molecular weight of approximately 412.65 g/mol, ensuring a stable aliphatic diester structure.
Physical Constants: Features a high boiling point of 237°C at 5 mmHg and a very low pour point below -60°C.
Specific Gravity: Typically ranges between 0.912 and 0.920 at 20°C, providing consistent density for precise industrial formulation and blending.
Refractive Index: Maintains a refractive index of approximately 1.448 to 1.452, contributing to high optical clarity in transparent polymer films.
Acid Value: Produced with a maximum acid value of 0.1 mg KOH/g, indicating high purity and minimal residual unreacted precursors.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Automotive Interiors: Used extensively in dashboard skins and upholstery to prevent cracking in cold climates and minimize windshield fogging.
Wire and Cable Insulation: Incorporated into high-performance electrical jacketing to provide flexible protection for wiring systems in arctic or aerospace environments.
Synthetic Lubricants: Serves as a primary base oil or additive in aerospace lubricants and greases due to its wide temperature range.
Medical Tubing: Utilized in specialized healthcare applications requiring flexible, non-toxic polymer structures that resist extraction by aqueous fluids and sterilization.
Coated Fabrics: Applied in the production of high-quality protective clothing and rainwear to maintain suppleness and waterproof integrity across seasons.