Naphthenic Process Oil (Rubber Extender Grade)
CAS Number: 64742-53-6
Naphthenic process oil is a low-aromatic, low-pour-point mineral oil extender used primarily in EPDM, NR, CR, and NBR rubber compounding. It provides excellent solvation of EPDM due to its compatible chemical nature, enabling high oil loading for low-cost compounds. Naphthenic oils are also used in rubber sponge, tire inner liners, and colored rubber goods where the non-staining, light color of naphthenic oil is advantageous.
Technical Specifications
| appearance | Light yellow to amber liquid |
| moisture (%) | ≤0.10 |
| pour point (°C) | ≤-15 |
| flash point (°C) | ≥170 |
| aniline point (°C) | 80–100 |
| kinematic viscosity (40°C, mm²/s) | 20–100 (grade-dependent) |
Applications
- EPDM compound extender (high oil loadings)
- Rubber sponge and foam compounds
- CR and NR electrical insulation compounds
- Tire inner liner softener
- Light-colored rubber goods where staining is unacceptable
Key Features
- Excellent compatibility with EPDM for high oil-loaded compounds
- Non-staining light color for colored rubber applications
- Low pour point for cold-temperature rubber flexibility
- Wide viscosity range available for different compound requirements
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CAS Number
64742-53-6
Category
Rubber / Tire ChemicalsAvailability
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