Sodium petroleum sulfonate

Sodium petroleum sulfonate (CAS 68608-26-4) is a sulfonation-derived anionic surfactant produced from refinery base oil fractions.

Where is Sodium petroleum sulfonate used?

• Metalworking: emulsifier, corrosion inhibitor and lubricity additive
• Metalworking fluids: emulsifies mineral oils into stable water-based cutting and grinding coolants
• Oil field: wetting and emulsifying agent in drilling muds and enhanced oil recovery formulations
• Rust-preventive compounds and corrosion-inhibiting coatings displace moisture from metal surfaces
• Textile and leather processing: dispersant and wetting agent in dyebath formulations and fat-liquoring operations
• It mobilizes crude from reservoir rock to improve extraction efficiency.

Good to know: Lighter cuts are preferred for emulsification performance, while heavier cuts are utilized for superior corrosion inhibition.

Commercial specifications

• Active matter content typically 50% to 62%
• Drum and IBC packaging