Calcium Petroleum Sulfonate Emulsifier for Metalworking
CAS Number: 61791-12-6
Calcium petroleum sulfonate emulsifiers are anionic surfactants widely used in soluble oil and semi-synthetic metalworking fluid concentrates to form stable oil-in-water emulsions with tap water of varying hardness. They provide simultaneous emulsification, mild rust inhibition, and lubricity enhancement. The calcium sulfonate structure offers superior emulsion stability versus sodium sulfonates, particularly in hard water conditions common in manufacturing environments.
Technical Specifications
| TBN | 20–60 mg KOH/g |
| appearance | Brown to dark brown viscous liquid |
| calcium content | 2.5–4.0 wt% |
| flash point (COC) | >175 °C |
| sulfonate content (active) | 40–60 wt% |
| kinematic viscosity (40°C) | 100–500 mm²/s |
Applications
- Soluble oil metalworking fluid concentrates (3–10% dilution with water)
- Semi-synthetic metalworking fluid emulsifier component
- Rolling oil emulsifier for aluminum and steel rolling applications
- Textile processing oil emulsifier for fiber spinning and weaving
- Agricultural emulsifiable concentrate emulsifier
Key Features
- Excellent hard water stability forms stable milky emulsions with water up to 500 ppm hardness
- Combined emulsification and rust inhibition reduces number of components in fluid concentrates
- Low skin sensitization risk versus sodium sulfonates for improved worker health and safety
- Compatible with amine-based corrosion inhibitors and phosphate-based antiwear additives
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CAS Number
61791-12-6
Category
Automotive Lubricant AdditivesAvailability
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