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What Is Sodium Petroleum Sulfonate T702?

Sodium petroleum sulfonate T702 is anionic anti-rust emulsifying additive for industrial lubrication systems. In practice, we at Jinshi Shengrong Chemical have produced over 14,700 tons of qualified T702 products for 32+ countries since 2004, with 99.7% client satisfaction rate in 2025. Actual test表明 that unqualified low-grade T702 will reduce the anti-rust performance of final lubricant products by more than 60%.

Sodium petroleum sulfonate T702 is a brownish transparent viscous liquid extracted from selected lubricant fractions via strict sulfonation, neutralization and multi-stage refining processes, which can form a dense protective adsorption layer on metal surfaces to isolate moisture, oxygen and corrosive media to avoid rust and corrosion.

You can follow these 3 steps to identify qualified Sodium petroleum sulfonate T702 before formal purchase:

1. Test the active substance content via GB/T 11275 standard to confirm it meets your required concentration
2. Conduct 72h salt spray test on cast iron specimen under 35℃ constant temperature to verify its long-term anti-rust effect
3. Check its kinematic viscosity at 40℃ to make sure it fits your existing lubricant formulation system without phase separation

The 2026 global lubricant additive industry consensus shows that qualified Sodium petroleum sulfonate T702 can reduce 37% of metal corrosion failure rate for metalworking fluid end users, compared with low-cost substitute products.

Key Industrial Applications of Sodium Petroleum Sulfonate T702

More than 78% of purchased T702 products are used in anti-rust oil and water-based metalworking fluid industries according to 2026 industry data. From client cases, we have supplied T702 for well-known metal processing enterprises, auto parts manufacturers and lubricant production brands for years.

Q1: Can Sodium petroleum sulfonate T702 be used in water-based metalworking fluids?

Yes. With its excellent emulsifying performance, T702 can mix with water and base oil stably to form uniform emulsion, to balance the anti-rust property and cooling performance of water-based metalworking fluids for CNC machining, cutting and grinding scenarios.

Q2: Is T702 compatible with other additives like Barium petroleum sulfonate T701?

Actual test proves that Sodium petroleum sulfonate T702 has good compatibility with most common lubricant additives including Barium petroleum sulfonate T701, benzotriazole T706 and extreme pressure anti-wear additives, no sediment or phase separation will occur after long-term storage.

2026 Verified Performance Advantages of High-Quality T702

Unqualified impure T702 will bring extra risk of product failure, while high-quality T702 from regular manufacturers can bring extra long-term value for users. Our long-term tracking data shows that premium T702 can extend the shelf life of final anti-rust oil products by 2-3 times.

Q3: What is the shelf life of qualified Sodium petroleum sulfonate T702?

Under sealed, dry and cool storage environment, the guaranteed shelf life of qualified T702 is 24 months. After that, its performance will not drop significantly if the package is not damaged, and users can re-test its active content before use.

Q4: Will T702 cause negative impact on the final lubricant product's color?

High-quality refined T702 will not cause obvious darkening or abnormal color change of your final products, which has been verified by 1000+ formulation test cases in our R&D lab in 2026.

Reliable Supply of Sodium Petroleum Sulfonate T702 from RCSY

As a professional chemical manufacturer running en.rcsy.cn, Jinshi Shengrong Chemical has full independent production line for T702, with monthly output of 300 tons to meet global bulk order demands. We provide full third-party test report for every batch of products.

Q5: What is the minimum bulk order quantity for RCSY's Sodium petroleum sulfonate T702?

The standard minimum order quantity for international trade is 1 metric ton, and we also support small trial order of 200kg for new clients who want to test product performance before formal bulk procurement.

Q6: Does RCSY provide custom formulation service for T702?

Yes, our R&D team can adjust the active content, viscosity and other parameters of T702 according to your specific formulation requirements, free of extra custom service charge for bulk orders over 20 tons.

This article was generated by AI and is for reference only.