|
HS Code |
718185 |
| Chemical Name | Propylene Oxide |
| Chemical Formula | C3H6O |
| Cas Number | 75-56-9 |
| Molecular Weight | 58.08 g/mol |
| Appearance | Colorless, volatile liquid |
| Odor | Ether-like |
| Boiling Point | 34°C (93°F) |
| Melting Point | -112°C (-170°F) |
| Density | 0.830 g/cm³ at 20°C |
| Solubility In Water | Miscible |
| Flash Point | -37°C (-35°F) |
| Vapor Pressure | 442 mmHg at 20°C |
| Autoignition Temperature | 455°C (851°F) |
| Refractive Index | 1.363 at 20°C |
| Flammability | Highly flammable |
As an accredited Propylene Oxide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Propylene Oxide is packaged in 200-liter steel drums, sealed, labeled with hazard warnings, and compliant with chemical transportation regulations. |
| Container Loading (20′ FCL) | Propylene Oxide is loaded in 20′ FCL containers, typically in steel drums or ISO tanks, ensuring secure, ventilated chemical transport. |
| Shipping | Propylene Oxide is shipped as a highly flammable, volatile liquid under pressure, typically in stainless steel cylinders or tank trucks. It must be transported in accordance with hazardous materials regulations, with proper labeling, leak-proof containers, and temperature control. Emergency procedures for fire and leaks must be strictly followed during shipping. |
| Storage | Propylene Oxide should be stored in tightly closed containers within a cool, dry, and well-ventilated area, away from heat, direct sunlight, and sources of ignition. Store separately from acids, alkalis, oxidizing agents, and amines, as it is highly flammable and reactive. Use explosion-proof equipment, and ensure proper labeling, secondary containment, and spill control measures for safety compliance. |
| Shelf Life | Propylene oxide typically has a shelf life of 12 months when stored in tightly closed containers under cool, dry, and well-ventilated conditions. |
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Purity 99.9%: Propylene Oxide with purity 99.9% is used in the manufacture of polyether polyols, where it enables consistent polymer chain formation and high-quality foam performance. Low Residual Water Content: Propylene Oxide with low residual water content is used in isocyanate production, where it minimizes side reactions and improves reaction yield. Molecular Weight 58.08 g/mol: Propylene Oxide with molecular weight 58.08 g/mol is used in pharmaceutical synthesis, where it ensures accurate dosing and reliable formulation outcomes. Stability Temperature up to 40°C: Propylene Oxide with stability temperature up to 40°C is used in fumigation of foodstuffs, where it preserves insecticidal efficacy during storage. Viscosity 0.59 mPa·s at 20°C: Propylene Oxide with viscosity 0.59 mPa·s at 20°C is used in the production of surfactants, where it allows efficient mixing and optimized emulsion stability. Melting Point -112°C: Propylene Oxide with melting point -112°C is used as a solvent in specialty chemical synthesis, where it enables operation at sub-zero process conditions. Stabilizer-Free Grade: Propylene Oxide in stabilizer-free grade is used in laboratory research, where it provides unaltered reactivity for kinetic studies. Peroxide Content ≤1 ppm: Propylene Oxide with peroxide content ≤1 ppm is used in electronics resin manufacturing, where it prevents unwanted polymerization and material defects. Chloride Content ≤10 ppm: Propylene Oxide with chloride content ≤10 ppm is used in the formulation of cosmetic emulsions, where it avoids corrosion and ensures product safety. Refractive Index 1.386 at 20°C: Propylene Oxide with refractive index 1.386 at 20°C is used in analytical laboratories, where it offers reliable product identification and quality control. |
Competitive Propylene Oxide prices that fit your budget—flexible terms and customized quotes for every order.
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As a chemical manufacturer, we approach each batch of propylene oxide with a deep understanding of its relationship to the businesses and products our customers create. People often ask us what sets our material apart. There is no magic ingredient—just a steady commitment to safe practices, purity, and knowledge built up from direct hands-on work in the plant and careful attention to detail in every stage of production.
Our liquid propylene oxide reflects the specifications that modern downstream industries demand. Most batches come in line with Standard Industrial Grade, maintaining water content well below the accepted threshold and controlling byproduct content, especially as measured by color and acidity, to avoid negative impacts on sensitive end uses.
Each tank, drum, or ISO container, once filled, represents hours of process control and line monitoring to ensure a product free of suspended solids, color bodies, or unreacted propene. Gas chromatography and Karl Fischer titrations verify the essential purity, and our team prides itself on keeping analytical results tight. We recognize even small deviations can affect foams, plastics, or surface coatings—making process consistency central to our success.
In our experience, the world rarely sees pure propylene oxide. The substance gets converted swiftly into derivatives or built into polymer structures. Flexible slabstock foam plants depend on the repeatability of propylene oxide, as it controls both reaction efficiency and finished cell structure. Demand from rigid foam producers and polyol manufacturers has always shaped how rigorously we set our quality benchmarks. A minor amount of water or extra unsaturation, and the reaction goes sideways.
Across our operation, we support producers of surfactants and lubricants who value the epoxide ring of propylene oxide for selective chemical synthesis. Their attention to trace impurities matches ours; an off-grade batch could lead to costly shutdowns or product recall cycles. Glycol producers focus on yield per mole in their reactors and trust that our process keeps the profile narrow, ensuring uniform feeds for ethylene oxide blends and specialized diols.
Some customers wonder if propylene oxide differs much from ethylene oxide or butylene oxide. While they can all open the door to polyol chemistry or serve as intermediate building blocks, the reality in the plant says otherwise. Propylene oxide, with its three-carbon ring, offers more control in chain propagation, letting chemists and engineers better regulate final viscosity or flexibility in polyurethane foams. Ethylene oxide has its place, especially in more hydrophilic products, but propylene oxide lands as the preferred choice where controlled reactivity and a tighter safety margin matter.
Physical handling also plays a role. Propylene oxide needs specific tank linings and vapor handling because of its volatility and moisture sensitivity. Our operations run dedicated lines after every cleaning and nitrogen purge, a practice some competitors overlook. Minor investments in line integrity have reduced downtime for our partners and protected staff from unexpected exposures.
The biggest chunk of global propylene oxide output finds its home in the foam industry. Automobile seat manufacturers report back every season about how modifications in our process, such as small changes to undesired byproducts or residual catalyst carryover, shift their yield or compressive strength curves. If you have ever sat in a car, office chair, or airplane seat with uniform padding and bounce, part of the credit belongs to a stable supply of pure propylene oxide made by manufacturers obsessing over ppm (parts-per-million) details.
Beyond foams, the world of glycols, fumigants, and specialty surfactants all draw from the same base. Our partners in brake fluid production report clear differences based on the manufacturer’s batch purity. The antifreeze market, which demands mono- and dipropylene glycol of specific chain lengths, relies on feedstock consistency to prevent gelling, separation, or off-color product. Long-term customer feedback keeps us motivated to uphold or exceed the stated specs.
Manufacturing propylene oxide rarely leaves room for shortcuts. Workers notice the distinctive, sweet odor. Over years, we have fine-tuned our ventilation, scrubbers, and leak prevention protocols. Our staff and local community take comfort knowing that multi-stage containment and gas alarms back up both people and property. Contrary to what some believe, making propylene oxide is not just about running a simple reactor. The real cost lies in safety and stewardship: every step from propene feedstock pretreatment to epoxidation requires vigilance and redundancy.
Spills and leaks do not just damage reputations. They harm the communities we live in, and insurance rarely covers the full impact. Our continuous improvement programs focus on human factors and equipment integrity. All the process automation in the world still depends on alert operators who recognize subtle shifts in reactor behavior. The company invests in training, regular process safety reviews, and constant dialogue with emergency responders in our area.
Any experienced propylene oxide producer can describe the persistent challenge of wastewater stream management. It is tempting to downplay this part of production, but a true manufacturer knows that regulatory compliance and environmental outcomes walk hand-in-hand. Every liter of process liquid gets tracked and analyzed. We recycle wherever possible, separating low-level organics from aqueous effluent using robust stripping systems and on-site incineration where recovery is not viable.
Neighbors want to know what happens beyond the plant gates at night. Over the years, transparency has built trust. Plant tours, publishing results, and responding to stakeholder inquiries form part of how we operate. As regulations tighten, these good habits help our business stay ahead of compliance deadlines.
No one at our firm believes in faceless management. Plant operators, maintenance, logistics, and quality control teams all feed data and insights into how we improve batches of propylene oxide. Regular meetings dissect deviations and, more importantly, feed them back to equipment upgrades and new process protocols. If a foam maker in another city reports an odd cell collapse in their line, we cross-check our logs and analytical results for the corresponding timeframe.
Our senior staff recall past years when industry standards were more relaxed. Over time, feedback from end users—better records, more honesty, fewer surprises—has led to stricter controls that benefit both us and the people who build their businesses using our output. Improvements in analytics and automation have helped, but the human eye and hands-on plant tours still catch things computers do not.
Customers request help in integrating our propylene oxide into new or changing processes. We provide technical support grounded in real-world experience—not just from behind a screen. Many of our technical advisors walked the production floor and learned troubleshooting step by step. We receive queries on batch reactivity, resin clarity, and storage logistics on a regular basis, and we understand which variables affect each type of plant.
One foam manufacturer might flag shrinkage or color shift. Another glycol producer calls with questions on evaporator fouling. Our advice never rests on generic responses. Instead, we share tested blending techniques or storage protocols developed through years of practice in our own facilities, knowing full well the impact on customer yield, safety, and product appeal.
Propylene oxide may feel like a commodity, but decades spent running reactors and troubleshooting utility systems have taught us that every plant and region faces slightly different challenges. Some countries demand ultra-low impurity content for food-contact uses. Others emphasize cost, volume, or supply certainty. No matter the destination, the technical reality remains: overlooked contamination or slack process controls can trigger expensive quality issues in finished products.
We see the long arc—from propene tank unloading all the way to the drum handing off at the customer’s warehouse. The margin for error narrows each year, as customers document every process event and expect manufacturers to do the same. We welcome the scrutiny. Our team has responded with more precise plant automation, tighter analytical controls, and stronger partnerships with logistics carriers specializing in temperature, pressurization, and hazardous material handling.
Material certifications matter on paper but mean much more when a supplier stands behind every shipment. Issues across the industry, whether from unexpected moisture, peroxide formation, or off-gas contamination, have driven us to invest in both online and at-line sampling systems capable of catching quality drift during production. Historical batch traceability, including tank-to-finished-product mapping, builds a robust audit trail for customers' quality management systems.
We routinely advise on ideal storage temperatures and tank materials to other firms making similar products. Small operational changes—for instance, tighter management of purge gases and improved insulation on tanks—reduce the risk of slow, silent contamination by water vapor, which in turn extends shelf life for both us and our partners.
Keeping up with global demand and new applications for propylene oxide requires an ongoing research program. Our lab teams collaborate with downstream manufacturers to develop next-generation building blocks that maintain drop-in compatibility with legacy foams, surfactants, and glycols while improving sustainability metrics.
Energy consumption during production has drawn scrutiny from both regulators and customers. We leverage heat integration and process simulation tools to reduce consumption without shortcutting on reliability. Several trials with alternative catalysts have so far produced interesting results, changing byproduct patterns and lowering certain emissions. Knowledge gained from these trials feeds directly into plant upgrades, not just corporate reports.
Market disruptions in recent years have exposed vulnerabilities across worldwide chemical supply chains. We maintain buffer stocks of key input chemicals, manage diversified supplier relationships, and work with transport specialists who know the needs of flammable, moisture-sensitive bulk chemicals like propylene oxide. Customers often reach out requiring flexibility on short notice, and we plan our inventory and maintenance turnarounds to meet those requests.
Local staff collaborate with customs and port authorities to prevent shipment delays, especially for overseas clients facing unpredictable dock schedules or regulatory changes. Advanced tracking and electronic documents minimize bottlenecks during international hand-offs, reflecting a view that robust supply is just as critical as high-purity chemistry.
Maintaining a reputation in the propylene oxide field depends not just on certificates or published specifications, but on a demonstrated track record of consistency across many years and business cycles. Customers rarely forget a bad shipment, but they build loyalty to suppliers who respond, investigate, and fix issues quickly.
As new uses for propylene oxide emerge—from modern polyols to biomedical polymers—we remain involved with trade groups, research bodies, and safety organizations, sharing our operational knowledge and learning from others in the process. The trust we have built over decades stems from listening, acting on feedback, and focusing resources on both technology and people to keep quality high.
The market never stands still. Existing industrial and consumer products continue to push for tighter performance limits, longer lifespans, and improved sustainability. Competing materials will always tempt some buyers. Still, the backbone of successful propylene oxide manufacturing is a willingness among producers to work closely with the companies who turn chemicals into finished products.
Every year brings a new regulatory or supply chain challenge, but working directly with customers and responding to real-time feedback has taught us that detailed process knowledge beats any shortcut. If our propylene oxide helps someone’s finished foam perform better, last longer, or meet a new legal requirement, we count that as proof of a job well done.
In this business, manufacturers of propylene oxide wear the history of their own process, their local environment, and their customer relationships. Our experience in the chemical industry has grounded us in the responsibility to supply safe, clean, and repeatable material—but also to blend technical, environmental, and practical concerns into a lasting partnership that keeps our operation accountable. We offer propylene oxide as more than just a liquid; for us, it is a measure of discipline, improvement, and the shared success of everyone in the value chain.