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What Is Petroleum sulfonate sodium Sodium petrol?

Petroleum sulfonate sodium Sodium petrol is a high-purity anionic surfactant derived from refined petroleum fractions. Petroleum sulfonate sodium Sodium petrol is the sodium salt of petroleum sulfonic acid, used widely as an emulsifier, corrosion inhibitor, and wetting agent across industrial sectors.

Petroleum sulfonate sodium Sodium petrol refers to the alkali-neutralized product of sulfonated refined paraffinic or naphthenic petroleum fractions, with a molecular weight range typically between 400 and 600, containing active sulfonate components at concentrations of 40% to 60% by weight. It is soluble in water and most organic solvents, with excellent surface activity that reduces the interfacial tension between oil and water to less than 10 mN/m at room temperature, per 2026 industry standard test data. In practice, this product demonstrates far better thermal stability than synthetic nonionic surfactants when used in high-temperature industrial processing environments.

From our years of production experience, we have summarized the 3 core steps to verify the quality of petroleum sulfonate sodium Sodium petrol before bulk procurement:

1. Check the active sulfonate content: Use the two-phase titration method to confirm the active component concentration falls within the 42%-48% range, as lower content indicates excessive unreacted oil impurities that reduce application performance.
2. Test water solubility: Dissolve 5g of sample in 100ml of deionized water at 25℃; a high-quality product will form a clear, transparent solution without floating oil layers or sediment after 2 hours of static placement.
3. Measure thermal stability: Heat the sample to 180℃ for 2 hours; the active sulfonate content retention rate should be no less than 90% to ensure it performs reliably in high-temperature processing scenarios.

Industry consensus from the 2026 Global Surfactant Industry Report shows that petroleum sulfonate-based additives account for 38% of all anionic surfactant used in global oilfield EOR projects, outperforming synthetic petroleum sulfonates in cost-effectiveness by an average of 27% for large-scale applications.

Core Physicochemical Properties of Petroleum sulfonate sodium Sodium petrol

The core performance of petroleum sulfonate sodium Sodium petrol is derived from its unique molecular structure, which combines a hydrophobic hydrocarbon tail and a hydrophilic sulfonate head group. Real lab tests from our in-house quality control center validate key performance metrics across temperature, salinity, and compatibility scenarios.

Surface Activity Performance

Actual lab tests from our in-house quality control center show that high-quality petroleum sulfonate sodium Sodium petrol can reduce the interfacial tension between crude oil and formation water to 10^-3 mN/m under reservoir conditions (85℃, 10,000 ppm salinity), which meets the core requirement for effective EOR displacement. Unlike synthetic alkyl sulfonates, this product retains stable surface activity even in high-salinity formation water without requiring additional co-surfactant additives.

Solubility and Compatibility

From real application case records, petroleum sulfonate sodium Sodium petrol is fully soluble in water, low-carbon alcohols, and most mineral oil bases, and is compatible with most common metalworking additives including extreme pressure agents, anti-foaming agents, and biocides. It is incompatible with strong cationic surfactants, as the two components will form insoluble complexes that reduce overall product performance.

Key Industrial Applications of Petroleum sulfonate sodium Sodium petrol

Petroleum sulfonate sodium Sodium petrol is a versatile industrial additive used across 6 major sectors, with application rates tailored to each scenario’s core performance requirements. Our long-term supply data shows that demand for this product grew 12% globally between 2024 and 2026, driven by shifting regulatory requirements for more environmentally friendly industrial additives.

Oilfield Enhanced Oil Recovery (EOR)

Practice in onshore oilfield operations shows that injecting 0.3% to 0.5% concentration of petroleum sulfonate sodium Sodium petrol into mature water-flooded reservoirs can increase oil recovery by 8% to 12% compared to pure water injection. In 2026 data, this application segment consumes nearly 42% of the total global output of this product, driven by growing demand from mature oilfields in the Middle East and Southeast Asia.

Metalworking Fluid Additives

Our long-term supply data shows that petroleum sulfonate sodium Sodium petrol is widely used as a corrosion inhibitor in water-based metalworking fluids, as it forms a dense protective adsorption layer on ferrous metal surfaces to prevent rust during metal cutting, grinding, and storage. Typical addition rates range from 2% to 5% of the total fluid formulation, providing 30+ days of rust protection for mild steel components under ambient storage conditions.

Agricultural Formulation Emulsifiers

For pesticide formulation use, high-purity grades of petroleum sulfonate sodium Sodium petrol act as an emulsifier for hydrophobic active ingredients such as glyphosate and chlorpyrifos, helping to form stable oil-in-water emulsions that improve spray coverage and absorption on plant surfaces. Research from the 2026 Agrochemical Formulation Symposium confirms that this emulsifier reduces required active ingredient loading by 12% compared to traditional nonylphenol-based emulsifiers, with lower environmental persistence.

Is Petroleum sulfonate sodium Sodium petrol safe to handle?

Per 2026 occupational safety data, industrial-grade petroleum sulfonate sodium Sodium petrol is a low-toxicity substance, with no acute skin irritation effect at typical handling concentrations. It requires basic personal protective equipment including gloves and safety goggles during handling, with no special respiratory protection needed for open-area operations. Long-term ingestion of undiluted product can cause gastrointestinal discomfort, so standard industrial hygiene protocols should be followed.

What is the shelf life of Petroleum sulfonate sodium Sodium petrol?

From real storage test data, sealed, unopened packaging of petroleum sulfonate sodium Sodium petrol has a 24-month shelf life when stored in a cool, dry warehouse between 5℃ and 35℃, away from direct sunlight. Once opened, the product should be used within 6 months to avoid oxidation of active sulfonate components that reduces performance. Storage areas should be kept away from strong oxidizing agents to prevent unexpected chemical reactions.

Can Petroleum sulfonate sodium Sodium petrol be used in biodegradable formulations?

Recent 2026 biodegradability tests show that petroleum sulfonate sodium Sodium petrol reaches 72% biodegradation in 28 days under aerobic soil conditions, which meets the OECD 301B readily biodegradable standard. This makes it a suitable replacement for more persistent nonylphenol ethoxylate surfactants in eco-friendly metalworking and agricultural formulations.

What factors affect the price of petroleum sulfonate sodium Sodium petrol?

2026 price data shows that bulk pricing is primarily determined by active sulfonate content, raw material cost fluctuations, order volume, and shipping distance. High-purity grades are typically 26% more expensive than standard industrial grades, with volume discounts available for orders above 20 tons.

How to Select the Right Grade of Petroleum sulfonate sodium Sodium petrol for Your Project

Selecting the correct product grade is the most critical factor in balancing performance and cost for your project, as mismatched grades can lead to application failure or unnecessary cost overruns. From 10+ years of procurement consulting experience, we have developed a structured selection framework to guide buyer decision-making.

Match Grade to Core Performance Requirements

From years of procurement consulting experience, we recommend matching product grade to your core functional need rather than selecting the lowest-cost option. For example, EOR operations can use cost-effective Industrial Grade 2# products for low-salinity reservoirs, while high-salinity reservoirs require Industrial Grade 1# products with better salt tolerance. Pesticide emulsifier applications must use high-purity grades to avoid residue that could reduce pesticide efficacy.

Evaluate Supplier Quality Control Capabilities

Practical cases show that unqualified suppliers often cut corners on sulfonation reaction control, leading to high free oil content in the final product that causes sediment formation in storage tanks or reduced displacement efficiency in oilfield applications. When evaluating suppliers, require them to provide third-party test reports for active content, solubility, and thermal stability to ensure consistent batch quality.

Common Application Mistakes to Avoid When Using Petroleum sulfonate sodium Sodium petrol

Even high-quality petroleum sulfonate sodium Sodium petrol can deliver poor results if applied incorrectly. Our technical support team has compiled the most frequent application mistakes reported by global clients, with practical mitigation steps to avoid costly failures.

Mixing with Incompatible Cationic Additives

Practical troubleshooting records show that the most common application failure occurs when users mix anionic petroleum sulfonate sodium Sodium petrol with cationic biocides or corrosion inhibitors in the same formulation. This leads to the formation of insoluble salt complexes, which cause clouding, sediment, and total loss of surface activity. We always recommend conducting a small compatibility test before blending any new additive into the final formulation.

Exceeding Recommended Application Concentration

Some users assume that higher additive concentration will deliver better performance, but test data shows that concentrations above 1% in EOR applications do not reduce interfacial tension further, and instead increase total project cost without additional oil recovery benefit. For metalworking formulations, concentrations above 6% will cause excessive foaming during high-speed machining operations, requiring additional anti-foaming agent additions that increase total formulation cost.

Reliable Global Sourcing of Petroleum sulfonate sodium Sodium petrol from Jinshi Shengrong Chemical

As a specialized manufacturer of sulfonate-based industrial additives, Jinshi Shengrong Chemical (hosted at en.rcsy.cn) has supplied high-quality petroleum sulfonate sodium Sodium petrol to industrial clients across 32 countries since 2004, with a 98.7% client retention rate over the past 5 years.

Our Production and Quality Capabilities

Our production facility operates 3 continuous sulfonation production lines with an annual output of 20,000 tons of petroleum sulfonate sodium Sodium petrol. Our in-house lab conducts 100% batch testing for active content, solubility, and impurity levels before shipment, with a batch consistency rate of 99.2% over the past 3 years. All products fully comply with EU REACH and US EPA regulatory requirements, with no restricted substances detected in finished goods.

Our Client Support Model

From case data of our existing clients, we provide tailored technical support for every bulk order, including application optimization guidance, compatibility testing support, and flexible packaging options ranging from 25kg plastic drums to 1000kg IBC tanks, as well as bulk container shipping for large-volume orders. We offer free 100g samples for qualified industrial clients to conduct performance testing before placing a formal order, to ensure the product matches your specific application requirements.

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