Dioctyl Sebacate (DOS)

1. Full Name: Dioctyl Sebacate (DOS)
2. Molecular Weight: ~426.7 g/mol
3. Type: Specialty plasticizer (ester-based)
4. Appearance: Clear, colorless to pale yellow oily liquid
5. CAS Number: 122-62-3
6. Chemical Formula: C₂₆H₅₀O₄

 Characteristics:

• Excellent low-temperature flexibility
• High thermal and oxidative stability
• Good electrical insulation properties
• Low volatility compared to other plasticizers
• Applications
• Plastics & Polymers
• Used as a primary or secondary plasticizer for PVC and synthetic rubbers
• Provides low-temperature flexibility (better than DOP/DOTP)
• Often blended with phthalates or adipates
• Aerospace & Military
• Widely used in aircraft hydraulic fluids (due to stability at low and high temperature
• Meets strict aviation specifications
• Lubricants
• Base fluid or additive in synthetic lubricants
• Used in low-temperature greases and oils
• Wires & Cables
• Ensures flexibility at sub-zero temperatures
• Enhances dielectric properties for electrical insulation
• Coatings & Films
• Used in flexible coatings, films, and adhesives requiring cold resistance