Overbased Calcium Sulfonates
| Formula: | Not applicable (mixture – typically Ca salts of alkylbenzenesulfonic acids) |
| CAS Number: | 68783-96-0 |
| EC Number (EINECS): | 263-093-9 |
| HS Code: | 38119000 |
| UN Number: | Not classified as dangerous goods for transport |
| IUPAC Name: | Calcium alkylbenzenesulfonate (overbased) |
| Also Known As: | Calcium Petroleum Sulfonate (Overbased); Overbased Calcium Alkylbenzene Sulfonates |
| Molecular Weight, g/mol: | Variable (mixture, typically ~500–600 range) |
Typical Specifications
| Appearance: | Dark brown to amber liquid |
| Odor: | Slight petroleum odor |
| Density, g/cm³ (at 20°C): | 0.95–1.05 |
| Flash Point, °C: | >180 |
| Solubility: | Soluble in mineral oils and hydrocarbons |
| Grades Available: | Overbased, Neutral, Low-Base |
| Packaging: | 200kg drums, 1000kg IBCs, bulk ISO tanks |
Applications / Uses
Primary Applications
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Widely used as detergent and neutralizing additive in lubricating oils
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Provides rust and corrosion protection in engine oils and marine oils
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Functions as an acid neutralizer in high-performance crankcase oils
Secondary Applications
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Used in greases as a thickener and rust inhibitor
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Additive in industrial lubricants and hydraulic fluids
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Component in metalworking fluids and rust-preventive coatings
End Industries Served: Automotive Lubricants, Marine Oils, Industrial Lubricants, Greases, Metalworking, Oil & Gas
Safety & Handling Information
Hazard Class (GHS): Skin Irritant (Category 2), Eye Irritant (Category 2)
Hazard Statements (H-Codes):
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H315: Causes skin irritation
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H319: Causes serious eye irritation
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H335: May cause respiratory irritation
Precautionary Statements (P-Codes):
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P280: Wear protective gloves/eye protection
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P261: Avoid breathing mist/vapors
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P302 + P352: IF ON SKIN – wash with plenty of soap and water
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P305 + P351 + P338: IF IN EYES – rinse cautiously with water, remove contact lenses if present
Storage Conditions
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Store in cool, dry, ventilated area
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Keep container tightly closed when not in use
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Protect from direct sunlight and moisture
Transport Information
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ADR/RID: Not classified as dangerous goods
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IMDG: Not classified as dangerous goods
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IATA: Not classified as dangerous goods