|
HS Code |
474537 |
| Chemicalname | Ethylene Oxide |
| Molecularformula | C2H4O |
| Molarmass | 44.05 g/mol |
| Casnumber | 75-21-8 |
| Appearance | Colorless gas |
| Odor | Ether-like |
| Boilingpoint | 10.7°C |
| Meltingpoint | -111.3°C |
| Density | 0.88 g/cm³ (liquid at 0°C) |
| Solubilityinwater | Miscible |
| Vaporpressure | 1,190 mmHg at 25°C |
| Flashpoint | -20°C (closed cup) |
| Autoignitiontemperature | 429°C |
| Explosivelimits | 3%-100% (in air) |
| Refractiveindex | 1.359 (liquid at 20°C) |
As an accredited Ethylene Oxide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Ethylene Oxide is supplied in 58 kg steel cylinders, featuring hazard labels, valve protection caps, and clear product and warning information. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for Ethylene Oxide: 20-foot containers securely loaded with drums/ISO tanks, following strict safety and hazardous material regulations. |
| Shipping | Ethylene Oxide is shipped as a liquefied gas under pressure in specialized, tightly-sealed, and clearly marked cylinders or tank containers. It is classified as a highly flammable, toxic, and reactive substance, requiring temperature control and strict adherence to safety regulations. Proper ventilation, grounding, and hazard labeling are mandatory during transport. |
| Storage | Ethylene oxide should be stored in tightly closed, pressure-resistant containers in a cool, well-ventilated area away from heat, sparks, open flames, and direct sunlight. Storage areas must be equipped with explosion-proof equipment and proper fire suppression systems. Ethylene oxide should be separated from acids, alkalies, oxidizers, and other incompatible materials to prevent dangerous reactions. Compliance with relevant safety regulations is essential. |
| Shelf Life | Ethylene oxide typically has an indefinite shelf life when stored in tightly sealed containers under cool, dry, and well-ventilated conditions. |
Competitive Ethylene Oxide prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615365186327 or mail to sales3@liwei-chem.com.
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Tel: +8615365186327
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Years of standing by the reactors have taught a simple lesson: every chemical matters in the industrial supply chain, and ethylene oxide, or EO as we call it in the plant yards, is as core as they come. For many of us who have spent early mornings calibrating equipment and late nights monitoring product purity, EO’s reach is not something you read in marketing folios—it’s something that turns up everywhere, from hospitals to the clothes on your back.
Our crews run EO on a continuous basis, pushing for quality with constant checks. In daily operations, we produce ethylene oxide with consistent specs, hitting over 99.5% purity by weight. Each batch comes as a colorless, slightly sweet-smelling gas at ambient conditions, condensing into a clear liquid under moderate pressure. It takes constant dedication and attention, since EO is reactive and demands tight control all through storage and transport.
Those of us who’ve worked in production know the stories that linger in the break room about how tiny volumes of EO help keep medical equipment free from microbes. Hospitals rely on it every day; without sterilized surgical instruments, patient outcomes shift for the worse. The vapor-phase sterilization process penetrates through the packaging, which is why EO often gets chosen where heat or liquid disinfectants would cause damage.
Outside healthcare, EO is indispensable in chemistry labs and industrial synthesis workshops. The list of products manufactured using EO-based chemistry reads long: ethylene glycol, glycol ethers, ethanolamines, and polyether polyols—each the backbone in something else, from engine coolants to flexible foam in furniture. Our control teams work with process engineers to tune EO reaction conditions, responding to demand spikes in antifreeze when a harsh winter is coming, or shifting to surfactants when new detergent lines come online.
Those of us who’ve observed manufacturing trends long enough can attest that EO’s value only grows as the number of downstream products rises. If you trace the supply chain, ethylene oxide sits right behind an enormous spectrum of consumer and industrial items.
Our operations place the primary focus on process-grade ethylene oxide. Distillation columns, specialized driers, and selective scrubbing systems step in at multiple checkpoints for targeted purity. Batch records show standard purity above 99.5%, with water content typically kept below 0.05%. We hold tight control on byproduct aldehydes and acids, testing regularly with in-plant chromatography units, because even minor impurities affect downstream polymerization reactions or medical sterilization grade.
We supply EO in both bulk liquid form, suitable for pressurized tank cars and iso containers, and as a compressed gas for specific sterilization systems. Every load comes with a COA, matched against our archived trend data stretching back over a decade. It’s not just about ticking the regulatory boxes—buyers expect a clear, robust performance every time, and the demands of a continuous plant leave no room for error.
Ethylene oxide is never treated as a “low-risk” commodity on the floor. Machinists and operators keep breathing zones monitored with personal alarms. All connections get leak-checked with soap solution, and teams work under strict lockout-tagout whenever hoses or filling lines are handled. These aren’t just safety theater—EO’s reactivity, volatility, and health hazards push us to drill every procedure until it’s second nature.
Comparing EO to similar chemicals creates clear dividing lines in usage and risk. Our time training new engineers is often spent explaining why, despite some overlap, EO can't be swapped out with propylene oxide or other alkylene oxides in many applications. EO’s three-membered ring gives it a higher reactivity profile—given the choice, EO reacts more readily with water, alcohols, acids, and amines, making it the preferred route to high-molecular-weight polyols or polyester intermediates.
Propylene oxide, while similar in volatility and handling requirements, carries a slightly larger ring and a methyl group. This difference seems subtle on paper, but our process chemists know it shifts the reactivity and selectivity landscape. You can make glycol ethers with both, but the final product composition, performance, and regulatory status—especially in food, drugs, and personal care—often land EO-based products at the center.
Safety-wise, all alkylene oxides have reputational risk, but EO’s long history and well-documented properties lead most major downstream manufacturers to trust it where exacting process control is required. EO’s lethal concentration is lower, and its flammability range is broader, which adds to the operational complexity. Maintenance leads in our plant routinely train teams on this; our EO handling rooms have constant negative pressure and custom flame detectors tuned for EO’s specific infrared signature.
The handling of EO doesn't lend itself to halfway measures. Older production lines—common in many regions—struggle with EO’s demand for exact temperature and pressure control, and the regulatory landscape only tightens year by year. As a plant, we’ve invested heavily in modernized sensors, explosion suppression systems, and automated interlocks to mitigate these risks. Walk the plant floor on a maintenance day, and you’ll see double-walled pipe runs, nitrogen blanketing systems, and intelligent vent scrubbing tech in constant operation.
Regulatory changes can land like an avalanche. A few years back, occupational exposure limits saw another round of tightening. In response, we set up continuous photoionization detector arrays in critical zones. Real-time feedback and regular medical screening are now standard parts of an operator’s main job. Robust shift rotations reduce fatigue, and refresher training stays mandatory for everyone who works with EO. These investments come straight from the reality that a single lapse could cause harm—to people, communities, or our own hard-earned reputation.
Environmental concerns also push us to rethink older process steps. We capture and recycle EO vent gases, feeding recovered product back to reactor feeds. Tanker loading now finishes with vapor balancing lines, cutting down fugitive emissions to barely-detectable levels. Process solvents once sent to incineration are now run through recovery column loops, with tighter trace-component cutoffs to ensure we never ship product with hazardous residuals.
Community impact draws attention, too. EO production facilities naturally bring public scrutiny; the news of emissions or safety events from plants in other jurisdictions means plant managers end up fielding more calls from local governments and stakeholders. Our response is simple: open up the site, run regular neighborhood briefings, provide transparent emissions reporting, and host plant tours so people see the level of investment we place in controls and safety. Most folks leave with a better appreciation for how technical and regulated EO production actually is. Fostering trust means sharing not just what we achieve but also the problems we encounter and what steps we’re taking to address them.
Living with EO production, you quickly learn that making it safer and cleaner isn’t just a compliance goal—it becomes a source of competitive edge. Customers depend on purity specs to avoid costly failures on their lines; even a trace contaminant in a glycol or polyol batch cascades into days of downstream trouble. We log every deviation, review them in root-cause rounds, and drive upgrades back to equipment vendors, process chemists, and, most importantly, daily operations teams.
From our vantage point, few chemicals have as direct a line from basic production through community impact, occupational safety, end-product integrity, and regulatory oversight as EO. It forces us to stay sharp, keep learning, and never take shortcuts. Many plants choose not to produce EO due to its inherent challenges, but those who do tend to lead in process safety, emissions control, and output uniformity across the industry.
We frequently partner on downstream R&D. Surfactant developers and specialty polymer labs now bring us process data and custom contaminant analyses, so both sides hone the spec sheet with every cycle. That kind of cooperation wasn’t standard years ago, but now it draws a line between those just trading volumes and those shaping where the market will head next.
Every drum, tank, and pipeline load we dispatch comes from production teams that see the product from reaction to delivery gate. Few appreciate the full context unless they’ve stood in full gear for a tank changeout or caught a 2 AM batch analysis shift. Manufacturer-direct supply brings a difference in traceability and customization. Need a tighter impurity cutoff for biopharma? We run dedicated campaigns and add extra analytics. Facing a new cleanroom validation? We connect QA teams directly so switchover runs fit end-user constraints.
Unlike bulk traders, our people can walk buyers through the how and why of each process tweak. Buyers facing sudden downtime or regulatory inquiries get not just a delayed user manual but process team rosters with direct phone and video support. Continuous engagement rolls changes from the lab to the field, skipping months of ignorance between sites and forcing a culture of open troubleshooting.
Long-term storage and shipping always bring new pains. Winter storms or logistics crunches can push deliveries out of schedule, but our onsite tank farms let customers draw directly, or use smaller delivery batches to better match warehouse capacity or provide rapid replenishment in tight windows. Experienced drivers, trained for EO hazards, visit sites, offload under strict monitoring, and complete post-transfer inspections to change out seals and gaskets as needed—real problems solved by real expertise, not just paperwork.
The ability to set production triggers based on direct buyer input means faster pivots to new grades or tighter specs. Changes in environmental regulation often call for quick process tweaks, rather than passive compliance. While traders can offer options across a broad basket, only plant production teams sit close enough to the valves to pull a full spec change with confidence.
We see new regulatory attention on EO’s residual presence beyond the factory gate, particularly in food-contact and health applications. This feeds our internal push for advanced analytics, chromatograph upgrades, and operator training, with each improvement feeding directly back into production practice. As the pressure grows for circularity and transparency, EO plants serving leading markets become laboratories for innovation in trace quality analysis and byproduct isolation, not just scale production.
Younger engineers and operators join the team now expecting more openness between production and customer. They want clear maps from raw input to shipped chemical, visible emissions performance, and a direct path for product upgrades. The best retention we’ve seen comes from collaborative projects—joint quality audits, remote process monitoring, and in-person cross-training. Together, these nurture a team that delivers not only reliable EO, but ongoing improvements.
As care in industrial chemistry rises globally, customers appreciate the additional investment in documentation, traceability, and verified process controls. We see it reflected in audit scores and repeat orders, especially from businesses facing their own share of product stewardship demands. Today’s EO manufacturing is less about mere output, and more about accountability—something only the manufacturer can fully provide, built from years of running the line, battling bottlenecks, and learning with every campaign. For chemists, engineers, loaders, and every hand on the moving parts, that’s the real story behind each shipment, setting it apart from what's possible through middlemen.
A lot gets said about the risks and complexity of producing ethylene oxide. Every day spent in production reminds us those difficulties are real, and they challenge teams to continuously lift standards for safety, sustainability, and reliability. From first drum to last shipment on each campaign, direct EO production places unmatched emphasis on traceability, adaptability, and support that supply chains built purely on trade can’t equal.
In the end, the value of EO comes down not only to molecular utility but also to the discipline applied through every production and shipping step. We live with that chemistry every day and welcome every new challenge as a reason to improve—not just to meet new rules or satisfy press scrutiny but because those who trust us with their critical processes deserve nothing less.