Dinonylnaphthalenesulfonic acid, calcium salt， or also called Calcium Dinonylnaphthalene Sulfonate(CAS 57855-77-3) is a high-performance anti-rust agent, widely applied in diverse industrial lubricants such as rust preventive oils, greases, hydraulic oils, and gear oils. It exhibits excellent anti-emulsification properties and filtration performance (both dry and wet). it possesses good solubility in mineral base oils, synthetic base oils, and various solvents, and features excellent compatibility with other additives.
Neutral sulfonate rust inhibitor designed for use in lubricants, greases, and metalworking fluids. It delivers exceptional rust prevention, demulsibility, and filterability. Its outstanding demulsification property significantly enhances water separation efficiency. In rust preventive formulations, it exhibits excellent synergistic effects when combined with other functional additives such as oxidates, waxes, and carboxylates. Furthermore, it functions as a highly effective dispersant for solid ingredients within lubricant formulations.
Product Benefits
- Premium Corrosion Protection: Delivers superior salt spray resistance and exceptional thermal-humidity protection.
- Excellent Demulsibility & Water Resistance: Provides outstanding water separation capabilities to prevent emulsion formation.
- Enhanced Fluid Longevity: Effectively extends the TOST (Turbine Oil Stability Test) life and suppresses oil degradation and sludge formation.
- Superior Filterability: Ensures outstanding hydraulic fluid filterability under both dry and wet operating conditions.
- System Compatibility: Maintains zero adverse impact on the lubricant’s air release property and foam control.
| Recommended Applications | Recommended Treat Rates (w/w) |
|---|---|
| Solvent-Borne Rust Preventives (RP Oils) | 1.0% – 15.0% |
| Hydraulic Fluids (DIN 51524 L-HM / Parker HF-0) | 0.05% – 0.5% |
| Industrial & Automotive Gear Oils (ISO CKD / API GL-5) | 0.10% – 1.0% |
| Lubricating Greases | 0.50% – 3.0% |
Packaging and Storage
Supplied in 200L drums. It is highly recommended to store the product in a dry, cool, and well-ventilated area, maintaining the storage temperature below 40°C (104°F).
Safety Precautions
Avoid direct contact with eyes, face, and skin. In case of accidental exposure, flush immediately with plenty of water. For detailed health, safety, and handling information, please refer to the Material Safety Data Sheet (MSDS) / Safety Data Sheet (SDS).