Barium petroleum sulfonate

Barium petroleum sulfonate (CAS 61790-48-5) is an oil-soluble metallic sulfonate. Also sold as barium petroleum sulfonates or referred to in technical literature as sulfonic acids, petroleum, barium salts.

Where is Barium petroleum sulfonate used?

• Lubricants: corrosion inhibitor and detergent additive
• Metalworking: protects ferrous surfaces during cutting, drawing and forming
• Rust-preventive oils and protective coatings for steel components in storage and transit
• Oilfield: supports water-in-oil emulsion stability in drilling and completion fluids
• In lubricant additive packages it acts as a detergent-dispersant, neutralizing acidic combustion byproducts and keeping engine and industrial oil systems clean.

Good to know: Product specifications are defined by total base number, barium content, and sulfonate equivalent weight. Buyers should confirm active sulfonate concentration and carrier oil type when comparing grades across suppliers.

Commercial specifications

• Viscous liquid or semi-solid, typically dissolved in a mineral oil carrier