Shell Catenex S 579 (H)
Shell Catenex S 579 (H) is a paraffinic process oil refined via solvent extraction, offering high viscosity, thermal stability, and consistent formulation properties for use as a general-purpose extender or carrier fluid.
Shell Catenex S 579 (H)
( Previously named: Shellflex 790 HP, Shell Catenex SM 979, Shell Catenex 79 )
High-viscosity paraffinic process oil for industrial extender and carrier applications
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Solvent-extracted formulation for consistent purity
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Extremely high kinematic viscosity: 500 mm²/s @ 40 °C and 32 mm²/s @ 100 °C
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Light colour (ASTM 5.5) with good oxidative stability
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High flash point (300 °C) and low pour point (-6 °C)
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Balanced aromatic (6%) and polar (3%) content
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Low PCA content (<3%) ensures safe processing
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Previously known as Shellflex 790 HP, Shell Catenex SM 979, Shell Catenex 79
Global Product Code: 001D1921
Application:
Shell Catenex S 579 (H) is a high-viscosity paraffinic process oil produced via solvent extraction. It is designed for use in industrial processing as an extender or carrier fluid where high viscosity, low aromatic content, and excellent thermal stability are essential. Its previous commercial names include Shellflex 790 HP, Shell Catenex SM 979, and Shell Catenex 79.
Performance Features & Benefits:
- High Viscosity: Exceptional thickness with 500 mm²/s @ 40 °C and 32.0 mm²/s @ 100 °C for applications requiring film strength and flow resistance.
- Refined Purity: Solvent-extracted for consistent quality and performance in demanding industrial uses.
- Good Thermal Properties: High flash point (300 °C) and low pour point (-6 °C) support a wide operational temperature range.
- Balanced Composition: Aromatic (6%) and polar (3%) content support compatibility and dispersion stability.
- Safe for Industrial Use: PCA content below 3% per IP 346 compliance.
Main Application Areas:
- Industrial formulations requiring high-viscosity carrier oils
- Rubber, elastomer, or chemical extension processes
- Applications needing thermal and oxidative stability
Specifications & Approvals:
- Manufactured via Shell solvent extraction
- Internal Shell specifications for paraffinic process oils
- PCA <3% by IP 346 method
Environmental & Safety Information:
- Shell Catenex S 579 (H) is not expected to present significant health or safety hazards when used as directed.
- Avoid prolonged skin contact. Use gloves when handling used oil. Wash skin with soap and water after contact.
- Do not discharge into drains, water, or soil. Dispose of used oil through authorised collection channels.
- Safety Data Sheet (SDS) available via inquiry
Technical Specifications:
| Property | Typical Value | Method |
|---|---|---|
| Colour (ASTM) | 5.5 | ASTM D1500 |
| Density @ 15°C | 905 kg/m³ | ISO 12185 |
| Refractive Index @ 20°C | 1.498 | ASTM D1218 |
| Flash Point (COC) | 300 °C | ISO 2592 |
| Pour Point | -6 °C | ISO 3016 |
| Kinematic Viscosity @ 20°C | 2300 mm²/s | ISO 3104 |
| Kinematic Viscosity @ 40°C | 500 mm²/s | ISO 3104 |
| Kinematic Viscosity @ 100°C | 32.0 mm²/s | ISO 3104 |
| Carbon Type Distribution — Aromatic (C/A) | 6% | DIN 51378 / ASTM D2140 mod. |
| Carbon Type Distribution — Naphthenic (C/N) | 23% | DIN 51378 / ASTM D2140 mod. |
| Carbon Type Distribution — Paraffinic (C/P) | 71% | DIN 51378 / ASTM D2140 mod. |
| Refractive Intercept | 1.0470 | DIN 51378 |
| Viscosity Gravity Constant (VGC) | 0.819 | DIN 51378 |
| Sulphur Content | 1.3% m/m | ISO 14596 |
| Aniline Point | 122 °C | ISO 2977 |
| Clay Gel Analysis — Polar Components | 3.0% m/m | ASTM D2007 |
| Clay Gel Analysis — Aromatic Components | 48.5% m/m | ASTM D2007 |
| Clay Gel Analysis — Saturated Components | 48.5% m/m | ASTM D2007 |
| Evaporation Loss (22h @ 107°C) | <0.1% m/m | ASTM D972 |
| PCA Content (DMSO Method) | <3.0% m/m | IP 346 |
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