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