Magnesium petroleum sulfonate

Magnesium petroleum sulfonate (CAS 61789-87-5), also marketed as oil-soluble petroleum sulfonate magnesium salt, is a metal sulfonate detergent-dispersant derived from petroleum refining streams.

Where is Magnesium petroleum sulfonate used?

• Lubricants and industrial fluids: corrosion inhibitor, detergent additive and emulsifier
• Engine and industrial lubricants: overbased or neutral detergent that neutralises acidic combustion by-products and keeps metal surfaces clean
• Metalworking fluids: rust protection and emulsification stability in cutting oils
• Rolling fluids and the oil and gas sector
• Pipeline corrosion inhibitor packages and drilling fluid additives where oil-phase compatibility is required
• Automotive transmission fluids and gear oils maintain dispersancy and protect against oxidative deposit formation.

Good to know: Total base number (TBN) is the key specification buyers use to select the appropriate grade. Neutral and overbased grades are available.

Commercial specifications

• Typically blended in a base oil carrier at defined active matter concentrations
• Drum and IBC quantities
• Bulk tanker options for large-volume customers