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HS Code |
772469 |
| Chemical Name | Ethylene Sulfone |
| Cas Number | 1120-71-4 |
| Molecular Formula | C2H4O2S |
| Molecular Weight | 92.12 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Boiling Point | 140-141°C |
| Melting Point | −28°C |
| Density | 1.275 g/cm³ at 20°C |
| Solubility In Water | Miscible |
| Flash Point | 49°C (closed cup) |
| Refractive Index | 1.443 at 20°C |
| Vapor Pressure | 2 mmHg at 20°C |
As an accredited Ethylene Sulfone factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Ethylene Sulfone is packaged in a sealed, amber glass bottle containing 500 grams, with proper hazard labeling and tamper-evident seal. |
| Shipping | Ethylene Sulfone should be shipped in tightly sealed, compatible containers to prevent leaks due to its reactivity and potential for decomposition. It must be transported as a hazardous material, with labeling in accordance with international regulations. Protect from moisture, heat, and direct sunlight. Ensure compliance with all relevant chemical transport safety standards. |
| Storage | Ethylene sulfone should be stored in a cool, dry, and well-ventilated area, away from heat, sparks, and direct sunlight. It must be kept in tightly sealed containers made of compatible materials, clearly labeled, and separated from incompatible substances such as strong acids, bases, and oxidizers. Proper safety and precautionary measures must be observed to prevent leaks and accidental exposure. |
Applications of Ethylene Sulfone in Industrial ManufacturingEthylene sulfone serves as a vital intermediate and functional additive across several demanding industrial sectors. As a chemical manufacturer, we supply material that meets strict process and product requirements across specialty polymer, battery electrolyte, pharmaceutical intermediate, and textile finishing applications. Below we outline key downstream uses, focusing on regulatory compliance, recommended ratios, typical processing methods, and material impact on end products. 1. High-Performance Polymer CrosslinkingEthylene sulfone acts as a bifunctional crosslinking agent for specialty polymers like polyvinyl alcohol (PVA) and polyacrylamides. Its strong sulfone groups promote thermally stable, chemical-resistant network formation. In industrial resin or fiber production, formulators adjust its addition to achieve specified durability, chemical resistance, and flexibility profiles for engineered plastics, filtration materials, and high-grade coatings. Industry compliance standards
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2. Lithium-Ion Battery Electrolyte AdditiveIn lithium-ion battery manufacturing, ethylene sulfone functions as a high-voltage electrolyte stabilizer. Material scientists employ it to suppress gas formation, reduce electrolyte decomposition, and improve cycling at elevated voltages. Its electron-withdrawing structure assists in forming robust SEI (solid electrolyte interphase) layers, especially in demanding high-energy cathode cells used for electric vehicles and grid storage systems. Industry compliance standards
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3. Synthesis of Pharmaceutical IntermediatesEthylene sulfone is an established sulfonating reagent in active pharmaceutical ingredient (API) production, facilitating the synthesis of sulfonamide and sulfone-containing precursor compounds. Process chemists leverage its high reactivity for clean conversion in the presence of aromatic amines and heterocycles, optimizing yields of anti-infective, anti-diabetic, and oncology drug intermediates meeting strict impurity controls. Industry compliance standards
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4. Textile Finishing and Washfastness ImprovementTextile chemical houses use ethylene sulfone to enhance washfastness and durability in reactive dyeing of cellulose fibers. It enters as a crosslinking agent in post-printing or finishing baths, creating robust sulfone bridges between dye molecules and fiber hydroxyl groups. This step increases resistance of dyed fabrics to repeated washing, fading, and chemical exposure, crucial for performance apparel and technical textiles. Industry compliance standards
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5. Epoxy Resin Curing Agent for Adhesives and SealantsEpoxy resin formulators incorporate ethylene sulfone as a latent curing agent in heat-activated structural adhesives and electronic sealants. Its thermally triggered activity enables extended storage stability, and under heat, it rapidly decomposes, releasing reactive species that drive crosslinking even in filled or thick-section applications. This helps meet performance requirements in automotive assembly, electronics, and engineering adhesives. Industry compliance standards
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Ethylene Sulfone, with the formula C2H4SO2, holds a unique spot among cyclic sulfones. We have dedicated years to perfecting its manufacture, adjusting the critical reaction environments, honing purification, and paying close attention to the end-use requirements voiced by our industrial partners. Unlike bulk commodity chemicals that come with little discussion over purity or batch consistency, Ethylene Sulfone demands reliability every step of the way because the smallest deviation can disrupt downstream performance in specialty polymerization, pharmaceutical intermediates, and analytical chemistry applications.
Out on the plant floor, Ethylene Sulfone bowls over the usual challenges that come with unstable ring systems. Our reactors run under carefully monitored temperatures to avoid side reactions, and strict nitrogen blanketing ensures moisture doesn’t degrade the product or kickstart unnecessary sulfonation. Every drum coming from our site carries tightly held specifications—a minimum purity above 99 percent and controlled moisture and color. Years ago, "good enough" might have meant a degree or two of yellow or trace volatile impurities. Those days are gone. Our operators reject any batch with off-odors, haze, or residue. Chemistry doesn’t forgive laziness, and customers notice the difference in reactivity, shelf life, and repeatability between manufacturers who get by and those who get it right.
Across our customer base, Ethylene Sulfone provides a dependable backbone for high-energy chemistry. One of its defining roles features in the production of crosslinkers for engineering plastics and elastomers. The two-carbon sulfone ring opens via controlled polymerization or nucleophile attack, laying the groundwork for unique network structures. Some of our partners in high-performance coatings appreciate the exact reactivity window of our material, as even a slight impurity content can introduce unpredictable curing times or partial gelation during blending.
Laboratory researchers ask for Ethylene Sulfone because it enables the preparation of sulfonyl-containing heterocycles, useful for medicinal chemistry. Beyond this, analytical chemists value the clean mass spectra and minimal by-product backdrop. Quality in this case goes well beyond a purity statistic; it means nothing extra shows up to confound an NMR spectrum or interfere with GC-MS assay. Those competing for patents on sulfonamide drugs or ionic monomers want certainty: no spurious peaks, no lingering stabilizers, and no batch-to-batch drift.
Downstream chemical engineers report that our material's predictable ring-opening chemistry in base-catalyzed reactions reduces waste and rework costs. In our view, savings go beyond dollar figures—they reflect a tighter process, fewer safety incidents, and higher material throughput. Especially in scale-up, unclean Ethylene Sulfone can lead to unpredictable viscosity shifts or generate off-gassing that fouls expensive plant assets.
Many see Ethylene Sulfone as just one more flask off the shelf. From our vantage point—on the ground where the phosgene cylinders roll in and reaction vessels need urgent cleaning—we see every reason not to trust random suppliers. A few years back, one industrial adhesive maker shared how a farther-east provider cut costs by skipping a purification cycle. The finished adhesive failed early in life testing, costing hundreds of thousands in warranty replacements. Our team still talks about the call where the customer’s formulation chemist read off batch numbers, shocked that the difference came from a single supplier switch. With Ethylene Sulfone, corners cut in filtration, drying, or storage don't just show up in paperwork—they end up as real, costly failures out in the field.
We invest heavily in analytical controls. After each batch, fresh samples head straight to our in-house lab. Titration, Karl Fischer for residual water, and UV-vis scans catch any deviation before shipping. These steps seem obsessive to newcomers, but veteran users know the pain of a missed sulfolane contaminant or a residue that migrates during a melt-processing operation. Our plant staff see this vigilance not as a check-the-box duty, but as a personal guarantee that each order reflects our standards and reputation, not a distant trader’s word.
Many buyers compare Ethylene Sulfone directly to technology mainstays like Sulfolane or Tetrahydrothiophene 1,1-dioxide. Those chemicals work well in extraction, solvents, or donor properties for catalysis, but they do not replicate the sharp reactivity profile or ring strain offered by Ethylene Sulfone. Where Sulfolane brings stable, high-boiling solvent qualities for gas treatment and purification, Ethylene Sulfone provides a reactive intermediate for forging entirely new molecules. Operators switching from Sulfolane to Ethylene Sulfone after years of routine are sometimes surprised by the potent nucleophilicity and lower thermal threshold. Mishandling can invoke rapid ring-opening reactions. We mitigate these not just through product labeling, but on-the-spot advice from plant veterans who have seen both routine and outlier cases during large-scale campaigns.
Contrasting Ethylene Sulfone to solid-phase sulfones reveals sharp differences, too. Benzene sulfone derivatives serve in fixed-site catalysis, while Ethylene Sulfone’s cyclic nature lets it bridge into polymer chains or small molecule insertions with almost surgical precision. Because of this, process engineers in fine chemicals make Ethylene Sulfone their go-to in tight-batch synthesis, where precise quantities deliver on high-value, low-volume targets. In larger-volume production, heat history and purity aren’t just nice-to-have: they turn into hard yield numbers and customer confidence after final property testing.
Some inquire whether Ethylene Sulfone can sub for more stable sulfonyl chlorides found at commodity price points. Chlorides supply quick and dirty reactivity, but they introduce handling risks and frequently generate chloride waste or hydrogen chloride gas—a real headache for both operators and environmental teams. Ethylene Sulfone gives a cleaner, more controllable route. We noticed a marked drop in off-gassing incidents after one major elastomer customer switched to our material, reporting improved air quality metrics and fewer unplanned downtime hours.
Success with any specialty chemical ties directly back to the people and culture running the plant. Whether tuning the charge tank temperature at 3 a.m. or recalibrating a spectrophotometer after a storm knocks out power, real-world manufacturing depends on scrappy, detail-prone teams who know every quirk of the raw materials. In our experience, legacy wisdom—those hundreds of production notes passed down by operators—often head off trouble long before test results would catch it. Someone who catches a trace odor of decomposition knows to shut down a process before wasted hours and product build up.
We bring customers onto the plant floor whenever possible. Many technical leads who specify Ethylene Sulfone never see beyond the paperwork or the clear liquid in the sample bottle. Walking through our finishing room, they watch how much effort goes into polishing out final impurities, stabilizing storage conditions, and continuously monitoring for contamination signs. That direct connection shifts the typical purchasing discussion from cold price-points and spec sheets to real conversations about plant performance, end-use failures, and lessons learned the hard way.
Through decades of partnership, we’ve seen that no two downstream applications use Ethylene Sulfone quite the same way. One customer, working on ion-exchange resins, tweaked process water levels by less than 0.1 percent and saw considerable jump in product performance. Our technical service team worked side by side with theirs, trialing drum lots against archived benchmarks. These firsthand collaborations keep both sides humble and tuned in to the practical edge of chemical manufacturing—where the best process beats theoretical optimums, because only one survives on an actual line.
Ethylene Sulfone’s volatility and specific reactivity call for respect in both production and application. Early on, plant incidents showed that misplaced assumptions about its hazard profile led to incidents, both environmental and human. Our production teams take their own health seriously: full-face protection, active ventilation, fast-acting shutoff systems. We design our transfer lines and delivery tanks to remove stasis points—if Ethylene Sulfone sits too long, particularly near heat sources, runaway reactions may trigger. Every year, our line operators run drills for response, using lessons from industry-wide case studies and internal audits.
Downstream, our technical advisors walk new customers through safe handling, even visiting local plants to see how Ethylene Sulfone fits into their workflow. Larger clients sometimes forget that a few small spills or incorrect venting can quickly cause problems, especially as regulations around workplace exposure tighten. From unloading to batch prep, our seasoned staff share best practices and pitfall stories to keep each plant moving, not just ticking safety boxes.
Efforts don’t stop at the plant gate. Customers in regions with developing regulatory infrastructure receive direct support from our compliance staff, ensuring that Ethylene Sulfone’s unique hazards—reactivity with water, heat sensitivity, volatility—don’t catch anyone unprepared. This ongoing dialogue helps shape not only batch sizes and packaging but also educates operators about routine and outlier incidents, supporting both environmental stewardship and safe growth.
Chemistry is evolving, and few chemicals highlight this better than Ethylene Sulfone. Pressure from downstream brands, stricter environmental audits, and customer requirements for both quality and transparency have changed how we manufacture and manage waste. Our plant recycles process water, makes use of secondary condensers to trim fugitive emissions, and sources raw materials from long-term partners whose own environmental standards meet audited benchmarks.
We keep tracking the conversation around "green chemistry" and recognize that customers want more than a certificate—they want to see real data showing how footprint and risk decrease year over year. That’s why our technical team collaborates with both external researchers and in-house process development to minimize by-product formation, lower energy use in ring closure reactions, and seek less hazardous solvents. Our research group has piloted alternative catalysts, which have cut the need for traditional heavy metal species. Every improvement, small or large, grows from close coordination between chemists, engineers, and downstream users willing to trial new ideas.
In the past, legacy plants operated out of sight from their biggest clients. Today, visibility into how Ethylene Sulfone flows from raw material to finished drum gives procurement managers and plant engineers peace of mind. We maintain traceability over every lot shipped and retain analytical samples so questions, years down the line, come with clear documentation. Customers value this recordkeeping not as a bureaucratic burden but as the foundation of reliable, audit-ready supply chains.
Ethylene Sulfone does not benefit from the brand recognition of other specialty chemicals, and this breeds confusion. New users ask for application guides and case studies to avoid costly scale-up failures. We see too many regulatory documents and technical handbooks containing outdated guidance, making it hard for operations staff to safely swap in Ethylene Sulfone or spot minor impurities before shipment. Advocacy within the industrial chemistry community and engagement with academic partners help address these gaps—but the best solutions emerge from candid, sustained conversation between manufacturer and user.
Packaging and logistics supply further complications. Ethylene Sulfone’s particular reactivity calls for leakproof, inert-lined drums that resist corrosion over time, especially during intercontinental shipping. Any moisture intrusion, even during brief storage at a port, causes material breakdown and loss of specification. Years of partnership with drum suppliers and logistics providers yielded the knowledge to reliably maintain product integrity from reactor to customer tank—nothing beats boots-on-the-ground troubleshooting and repeated verification at every handoff point.
Recent pressure on international raw material markets—price spikes, logistical bottlenecks, closer environmental scrutiny—demands nimble response. We maintain critical inventories and supplier redundancy, keeping end-users buffered against interruptions. The ability to shift feedstock sources or re-batch on short notice has turned near-crises into uneventful weeks for our partners. Our experience shows that talking through risks openly and planning with customers ahead of time leads to fewer panicked calls and greater trust.
Every molecule rolling out of our reactors speaks to our ongoing effort—constant testing, careful handling, and joint problem-solving with plant partners. Ethylene Sulfone isn’t a low-cost line item to us. Our plant operators know the fallout from a misstep, whether that means an out-of-spec polymer run or a failed product batch that jeopardizes a customer’s business. The pride our team carries comes from seeing familiar names on returning orders and the mutual respect earned by solving tough technical puzzles together.
Whether it's building a new block copolymer, refining a pharmaceutical step, or developing advanced resins, we bring Ethylene Sulfone forward as a specialty tool for creative industry. Our approach doesn’t focus on commoditization—it emphasizes craft, control, and deep technical knowledge shaped by decades of manufacturing. For teams looking for more than a lowest-bid chemical, we offer a partnership built on evidence and experience. The value we deliver is measured not just in USP graphs or ppm of impurity, but in batches that perform to spec, operators who trust their supply line, and businesses that keep their edge in innovation and quality.