Overbased Magnesium Sulfonate Detergent
CAS Number: 61789-87-5
Overbased magnesium sulfonate detergent offers excellent acid neutralization and high-temperature deposit control, making it a preferred alternative or complement to calcium sulfonate in engine oil and marine lubricant formulations. The magnesium sulfonate structure provides superior high-temperature detergency for controlling piston and ring belt deposits in turbocharged diesel engines. It is widely specified in marine two-stroke cylinder oils and aviation piston engine lubricants where magnesium ash is preferred.
Technical Specifications
| appearance | Brown to dark amber viscous liquid |
| sulfur content | 1.5–3.0 wt% |
| flash point (COC) | >160 °C |
| magnesium content | 7.0–10.0 wt% |
| TBN (total base number) | 300–450 mg KOH/g |
| kinematic viscosity (100°C) | 40–120 mm²/s |
Applications
- Marine two-stroke diesel cylinder lubricating oil (CLO)
- Aviation piston engine oils where magnesium ash is preferred over calcium
- Turbocharged diesel and gasoline engine oils requiring enhanced detergency
- High-sulfur fuel engine oils needing strong acid neutralization
- Blended with calcium sulfonate in heavy-duty diesel engine oil packages
Key Features
- Superior high-temperature piston cleanliness versus calcium sulfonate in turbo diesel applications
- High TBN (300–450) provides extended acid-neutralizing reserve for long-drain operation
- Magnesium ash preferred in marine and aviation applications for combustion cleanliness
- Excellent synergy with calcium-based detergents for balanced formulation flexibility
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CAS Number
61789-87-5
Category
Automotive Lubricant AdditivesAvailability
In StockSample
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