|
HS Code |
314123 |
| Chemicalname | Propylene |
| Chemicalformula | C3H6 |
| Casnumber | 115-07-1 |
| Molecularweight | 42.08 g/mol |
| Physicalstate | Gas (at room temperature) |
| Boilingpoint | -47.6°C |
| Meltingpoint | -185.2°C |
| Density | 1.81 kg/m³ (at 0°C, 101.3 kPa) |
| Solubilityinwater | 0.235 g/L (at 25°C) |
| Odor | Faint petroleum-like odor |
| Color | Colorless |
| Flammability | Highly flammable |
| Autoignitiontemperature | 455°C |
| Vaporpressure | 835 kPa (at 21.1°C) |
| Commonuses | Production of polypropylene, chemical intermediate, fuel |
As an accredited Propylene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
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Purity 99.5%: Propylene with a purity of 99.5% is used in polymer-grade polypropylene production, where it ensures high polymer strength and clarity. Viscosity grade low: Propylene of low viscosity grade is used in the synthesis of acrylonitrile, where it achieves improved reaction efficiency and yield. Boiling point -47.6°C: Propylene with a boiling point of -47.6°C is used in refrigeration systems, where it provides efficient heat exchange and rapid cooling. Molecular weight 42.08 g/mol: Propylene with a molecular weight of 42.08 g/mol is used in propane dehydrogenation units, where it allows optimal conversion rates. Stability temperature up to 120°C: Propylene stable up to 120°C is used in fuel cell applications, where it maintains product integrity and operational reliability. Moisture content <10 ppm: Propylene with moisture content below 10 ppm is used in the production of cumene, where it prevents catalyst deactivation and maximizes yields. Density 1.81 kg/m³: Propylene with a density of 1.81 kg/m³ is used in chemical vapor deposition processes, where it enables precise film thickness control. Sulfur content <1 ppm: Propylene with sulfur content below 1 ppm is used in polyolefin manufacturing, where it reduces catalyst poisoning and ensures consistent polymer quality. |
| Packing | Propylene is typically supplied in sturdy, pressurized steel cylinders, each containing 50 kg, clearly labeled with hazard warnings and handling instructions. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL): Propylene is loaded in specialized 20-foot containers, ensuring secure transport under controlled temperature and pressure conditions. |
| Shipping | Propylene is typically shipped as a liquefied gas under pressure in specialized, clearly labeled cylinders, tank trucks, or railcars. It must be transported according to strict safety regulations due to its flammability. Appropriate hazard placards, leak detection systems, and temperature controls are essential during transit to prevent accidents and ensure safe delivery. |
| Storage | Propylene is typically stored as a liquefied gas under pressure in specially designed, well-ventilated cylinders or bulk tanks. Storage vessels are made of materials compatible with propylene, often carbon steel, and are equipped with safety relief valves. The storage area should be free from ignition sources due to propylene’s flammability. Temperature and pressure must be carefully monitored and controlled. |
| Shelf Life | Propylene typically has an indefinite shelf life when stored in tightly sealed, high-pressure cylinders away from heat, ignition sources, and moisture. |
Competitive Propylene prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to sales3@ascent-chem.com.
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Tel: +8615365186327
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In chemical manufacturing, few materials shape factories, supply chains, and end-products as broadly as propylene. From the outset, as a facility with years on the ground moving tons of product, the blend of safety demands, quality focus, and commitment to responsible supply shape every batch of propylene that leaves our reactors. The gas stage of propylene means constant vigilance for leaks, purity, and pressure. Our leadership in processing propylene comes from hands-on factory-floor experience: workers learn the ins and outs over years, and equipment never leaves their grasp without careful monitoring. Large-scale polymerization needs technical experience and a true grasp of market needs.
We run propylene production to meet international and domestic standards. Our output includes polymer-grade and chemical-grade propylene, each matching strict pressure and purity requirements. Polymer grade runs at 99.5% and above by volume, with trace oxygen, water, and sulfur limits. This level goes into polypropylene plants where minute impurity changes affect the final plastic’s color, mechanical strength, and safe use in appliances and food packaging. Chemical grade, used mostly for propylene oxide and acrylonitrile, suits a wider impurity range—though our process can supply tighter specs if your operation demands it. Customers depend on our stable feedstock to keep their reactors running 24/7.
We move propylene daily under high pressure in certified, leak-checked cylinders, tube trailers, and ISO tanks. Each load meets standards set by ASTM and other regulatory bodies. Operators double-check moisture and hydrocarbon content, avoiding stickiness or side reactions that threaten downstream processes. Our long-term experience running compressors, driers, and fractionation towers shows up in every shipment. We stand behind numbers that reflect years of stability and hands-on controls.
Propylene covers more ground in practical chemistry than most laypeople realize. Most commonly, it forms the backbone of polypropylene—one of the most widespread plastics in packaging, auto manufacturing, fibers, and household goods. Not a week passes without a customer calling about critical filtration grades needed so their molding machines keep running smoothly. If the propylene carries too much dimer or sulfur, the final product fails their application tests. Engineers complain about haze, unevenities, brittleness, or coloring, so we invest in maximum purity for demanding clients.
Beyond polymers, propylene becomes solvents, coatings, and chemical intermediates. Factories buy our gas to turn into acrylonitrile (driving ABS plastic and nylon markets), propylene oxide (for flexible foams, refrigerator insulation, and coatings), isopropanol (widely used as a solvent and disinfectant), and cumene (turns into phenol and acetone). Local downstream sites count on our logistics team because process stoppages mean huge losses. Real-world supply means weathering storms, adjusting schedules, and keeping product moving in the pipeline or on trucks, despite roadblocks—experience that separates long-time producers from brokers and traders.
People unfamiliar with petrochemical plants sometimes lump propylene together with its kin, ethylene and butylene. Handling these gases reveals their differences in reaction behavior, storage, and reactivity. Propylene’s double bond enables more versatile chemistry than ethylene’s, and that methyl group makes it more selective in catalysts. Many of the plants we supply run processes that would stall with straight ethylene. For instance, polypropylene and propylene oxide rely on the very characteristics that separate propylene from the lighter ethylene—even a process engineer can’t substitute one for the other and expect workable results.
Moreover, propylene aligns with the demands of the modern value chain: the mix of strength, chemical resistance, and cost provides customers an edge not achievable with ethylene-based alternatives. Compared to butylene, propylene remains far more common in industrial supply. Our tanks show that scale every month. The industry’s ongoing shift toward “on-purpose” propylene production (via propane dehydrogenation) reflects a move away from petroleum cracker dependency. Our own investments in newer catalytic dehydrogenation units allow us to supply markets even when naphtha cracker economics shift out of balance.
Maintaining a stable supply of high-purity propylene calls for more than the right equipment. Lab confirmation alone cannot keep a plant successful if leaks or poor handling compromise the cylinders or ISO tanks. The true test comes during seasonal peaks or disruptions: the reliability and safety of our workforce translates directly into fewer off-spec incidents and less downtime for everyone along the value chain.
We learned early to calibrate all cylinders, hoses, and gauges by hand, not just relying on automation. Careful oversight at every step avoids contaminant pickup or drops during transfer. Experience proved critical: one humid summer, water condensed in a loading line, nearly halting a client’s downstream unit. Faster new hires see lessons in why gloves, leak sprays, and regular valve checks matter—while older team members pass along their stories. Years of handling different grades build a store of “gut knowledge” that avoids trouble before it starts. For us, institutional memory and hands-on work matter as much as process data.
Our propylene flows directly into the backbone of the plastics industry. Injection-molded parts seem simple on the surface but demand high-purity feedstock to stay consistent in strength and finish. Customers running at forty to fifty molds a minute require propylene with minimum water, oxygen, and sulfur content, or risk expensive scrap and rework. Not every producer manages to sustain these margins, but our deep experience keeps QA teams satisfied.
Textile manufacturers also require a stable propylene supply for polypropylene fibers and films, essential for carpets, ropes, netting, and industrial fabrics. Variations in raw material purity or pressure can affect fiber spinning lines, leading to costly quality issues or downtime. Teams on our factory floor have heard enough direct feedback from spinning operators to know just how tightly process control must stay. Our shipping and inventory management—down to daily cylinder checks and pressure readings—make a difference in keeping these lines running on spec. Close coordination keeps surprises out of both our shop and our client’s warehouse.
Propylene acts as a foundation for solvents and intermediates serving the paint, coatings, and construction industries. Isopropanol, propylene oxide, and acrylonitrile all build out from the same base supply. Even modest shifts in propylene delivery times or impurity loads mean coatings suppliers must adjust batch sizes, costing time and money. We learned through experience that the less a buyer notices propylene’s role, the more stable our service: they manage production runs, not supply headaches.
Safe handling surrounds every aspect of producing and delivering propylene. We keep our operations within strict emission limits, not just because regulations demand it, but because of the strong local presence we maintain—those living near our plants expect us to keep neighbors, workers, and emergency crews safe. Practical risk management matters more to us than paperwork. Each shift runs regular leak checks on compressors, tanks, and manifold systems; everyone on the plant floor knows how to respond if a sensor pings an off-level reading.
Environmental investments matter. Waste gas goes through flare systems or is recovered for reuse; loading docks stay monitored to catch even minor liquid leaks or vapor releases. From years of collaboration with environmental inspectors, we learned that proactive fixes serve everyone: faster repairs, smarter material choices for gaskets and hoses, fewer calls to emergency responders. Our proudest successes come not from checklists, but from years of clean audits and the local confidence earned by respecting our neighbors.
Propylene supply swings with crude oil and natural gas prices, changing refinery output ratios in ways that few outside the sector appreciate. Our plant makes long-term procurement decisions off not just today’s market, but our own forecasts and storage abilities. We weather sudden shutdowns in refineries or cracker units; redundancies kept in storage or splitters mean our customers’ lines stay running.
Recent years brought sharp changes. The rise of shale gas cut ethylene prices, rearranging traditional patterns of olefin supply. Propylene cracked from naphtha or derived “on purpose” with propane dehydrogenation make up the shortfall. We continue investing in new units and digital controls to track inventory and automate mixing and transfer systems. The challenges never disappear, but seasoned leadership puts us ahead of every new cycle. Surges during weather events or transportation strikes mean fast response, steady tankers, and a willingness to go well beyond a contract line-item.
Quality starts with reliable raw materials and extends through every shift change and handover. Lab teams run GC (gas chromatography) checks on every lot, but production techs and operators do the practical work—sampling lines, recording batch logs, verifying seals. We cross-check key metrics—impurities, water, oxygen, total vapor pressure—at each step, maintaining the record not as a box-ticking measure, but as practical insurance against lost product or failed deliveries. Teams use their own experience to spot abnormal smells, unexpected wear; new automation frees up operators for more focused checking.
Propylene production stands or falls based on continuous learning. We host quarterly sessions to go over mistakes: not every problem shows up in a chromatogram. Plant workers share stories of valve failures, gauge errors, or close calls that never made it into a customer’s delivery, teaching new hires what matters and why their work matters. We foster a culture where mistakes become lessons and experience stays within the company—our safety and reliability records owe much to these habits.
We work alongside our customers, not simply as suppliers but as partners in efficiency, safety, and cost. Many customers bring us specific problems—unusual color specs, pressure requirements, supply deadlines during shutdowns—with the expectation we will solve them directly. Predictable product quality, tailored response to last-minute plant needs, and genuine human contact count for as much as low cost.
Every month, our field service hands check on critical storage tanks or train customer operators on valve care. We take feedback from factory engineers about pressure ratings and fitting compatibilities, integrating their needs into our daily operation. Years running these tight partnerships pay off when a delay hits or when an application engineer requires a purity trace matched to a process audit. Such relationships never develop from a datasheet—they result from genuine engagement and shared experience.
As downstream demand shifts, so do our manufacturing priorities. The industry’s increasing focus on sustainability means tighter scrutiny on every input and output from our propylene units. We developed internal systems for heat recovery, flare gas minimization, and tighter leak detection just as regulations tightened. In recent years, on-site monitoring joined cloud-based plant analytics, mixing day-to-day operator knowledge with the latest digital controls—a blend that turned small investments into measurable improvements in tank turnover and energy use.
Our technical staff review new catalyst formulations, aiming for higher selectivity and better propylene yields. We share best practices with global peers, learning what worked elsewhere and how it could fit our specific mix of feedstocks and local infrastructure. Shifting from naphtha to propane as a feed changes everything from compressor settings to process waste. Only by staying practical, open to change, and mindful of daily realities on the factory floor can we adapt, respond, and improve.
The coming decades will keep propylene in sharp focus for chemical plants worldwide. Customers evolve; so do their needs. Advanced composites, lightweight auto parts, and sustainable plastics applications all depend on a solid, stable propylene base. Our commitment to reliability extends to every new grade, every tank, and every process line. Investments in staff training, equipment upgrades, and rigorous supplier relationships keep us ready for what’s next in propylene chemistry.
Working close to the heart of the supply chain, we know that each shipment means more than a balance sheet entry—it represents contracts, jobs, and progress. Our goal remains simple: get high-quality propylene into the hands of those who use it, every day, safely and without delay. The trust we earn from this work defines us more than any number on a spec sheet. Propylene’s promise sits not in technical jargon, but in the smooth running of the countless factories and lines depending on it. That’s the source of our pride—and the motivation for every improvement we pursue.