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HS Code |
782863 |
| Chemicalformula | C3H6 |
| Casnumber | 115-07-1 |
| Molecularweight | 42.08 g/mol |
| Purity | ≥ 99.5% |
| Physicalstate | Gas at 25°C and 1 atm |
| Boilingpoint | -47.7°C |
| Meltingpoint | -185.2°C |
| Density | 1.81 kg/m³ (at 0°C, 1 atm) |
| Vaporpressure | 830 kPa (at 21°C) |
| Appearance | Colorless gas |
| Odor | Slightly sweet odor |
| Flashpoint | -108°C (closed cup) |
| Solubilityinwater | 23 mg/L (at 25°C) |
| Flammability | Extremely flammable |
| Majoruse | Production of polypropylene |
As an accredited Polymer Grade Propylene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Polymer Grade Propylene is supplied in 16,000-gallon pressurized tank cars, featuring reinforced steel construction and clear hazard labeling. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for Polymer Grade Propylene involves safe, secure bulk packaging tailored for export, maximizing 20-foot container capacity. |
| Shipping | Polymer Grade Propylene is shipped as a liquefied gas under pressure in specialized, tightly sealed tank trucks, railcars, or ISO tank containers. Proper labeling, grounding, and adherence to hazardous materials regulations are required. Storage and transport areas must be well-ventilated and equipped with safety measures to prevent leaks or ignition. |
| Storage | Polymer Grade Propylene should be stored in tightly sealed, dedicated pressure vessels or storage tanks made of compatible material, such as carbon steel, and equipped with pressure and temperature controls. Tanks must be located in well-ventilated areas, away from sources of ignition and direct sunlight. Proper grounding and vapor recovery systems are essential to prevent static discharge and minimize environmental emissions. |
| Shelf Life | Polymer Grade Propylene typically has a shelf life of one year when stored under proper conditions, away from heat, moisture, and contaminants. |
Applications of Polymer Grade Propylene in Industrial ManufacturingPolymer grade propylene plays a central role in driving innovation and production efficiency across key downstream industries. As a manufacturer, we supply propylene that meets the precise quality, purity, and handling requirements demanded by modern polymerization and chemical synthesis processes. Below, we present industry-proven application scenarios with a focus on process integration, regulatory adherence, formulation specifics, and the end products supported by our material. 1. Polypropylene Resin ProductionPolypropylene resin manufacturing represents the largest direct downstream utilization of polymer grade propylene. The raw material feeds directly into continuous and batch-type gas-phase and slurry polymerization units, where it forms homopolymers and copolymers for diverse packaging and engineering applications. We deliver feedstock specifically controlled for trace oxygenates and hydrocarbons to align with both Ziegler-Natta and newer metallocene catalyst technologies. Formulators in this sector carefully monitor feed rates and monomer purity, as these parameters directly influence resin characteristics observed during quality assurance and subsequent compounder processing. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
2. Propylene Oxide SynthesisIndustrial propylene oxide plants utilize high-purity propylene as the main hydrocarbon feedstock for both chlorohydrin and hydroperoxide (PO/SM or PO/TBA) production routes. The integrity and continuous supply of this monomer directly affect reaction yield, selectivity, and compliance with eco- and food-safety regulations. Our dedicated supply streams ensure minimized moisture and sulfur residues, which are critical to preventing catalyst fouling and off-spec co-products in the synthesis of intermediates for polyether polyols and downstream PU systems. Industry compliance standards
Typical usage ratio
Downstream process integration
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3. Acrylonitrile ManufacturingPropylene stands as a primary raw material in the ammoxidation route to produce acrylonitrile, a vital intermediate for plastics, synthetic fibers, and specialty chemicals. Our material supplies enter fluidized bed catalytic reactors, where strict compositional control over both unsaturates and inert impurities is non-negotiable for optimizing yields and minimizing NOx and solid waste. End users in this sector rely on consistent hydrocarbon profiles to maintain reaction efficiency and to support the plant’s compliance with global environmental standards. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
4. Cumene (Isopropylbenzene) ProductionIn the phenol and acetone value chain, propylene reacts with benzene over solid-acid catalysts to manufacture cumene. Our consistent feed specification—with monitored aromatics and sulfur levels—facilitates efficient alkylation, offering downstream processors high conversion, low coking rates, and stable operation. The defined propylene stream enables accurate catalyst cycle planning and effective quality control in both grassroots and brownfield cumene units, which in turn supports the economics of bisphenol-A and resin supply chains. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
5. Oligomerization to Polyolefin ElastomersCertain elastomer manufacturers utilize polymer grade feedstocks for the solution or slurry oligomerization to specialty polyolefin elastomers, which require close control of monomer input, catalyst exposure, and impurity exclusion. The supplied material ensures high consistency in molecular weight distribution and end-group properties, essential for automotive and wire & cable insulation compounds. Downstream plants enforce continuous operations, leveraging in-line monitoring of monomer and adjusting feed proportions to optimize elastomer composition for targeted mechanical profiles. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
6. Isotactic Polypropylene Film and Fiber ManufacturingThe high purity of polymer grade feedstock enables downstream fiber spinners and film extruders to achieve consistently high isotactic index continuity across lots, crucial for tensile performance and clarity in applications such as BOPP packaging, hygiene, and industrial nonwovens. Manufacturers rely on well-characterized propylene streams optimized for low diene, sulfur, and oxygenate content to avoid defects in orientation and long-term stability. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
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Competitive Polymer Grade Propylene prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8618136850665 or mail to sales4@ascent-chem.com.
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Tel: +8618136850665
Email: sales4@ascent-chem.com
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Polymer grade propylene serves as a crucial building block for the plastics industry, and our manufacturing floor knows its importance up close. Propylene enters the plant as a colorless gas and leaves our site as a high-purity product, with tight controls making sure it meets the narrow specifications required for modern polymer production. Every batch that leaves our columns has gone through rigorous separation and purification steps. We have spent decades fine-tuning this process to keep up with fast-evolving customer needs and a changing regulatory landscape, and our on-site teams check every shipment to make sure it hits the mark.
Production lines don’t slow down for guesswork, so we maintain steady output of polymer grade propylene at purity levels above 99.5%. That single decimal means a lot once it hits the reactors at a polypropylene facility or polyol plant downstream. A small drop in purity can set off whole chains of trouble for compounding, catalyst activity, or polymer performance down the line. We have seen firsthand what can happen if specs slip. Our operators keep close tabs on water and oxygen content, looking for numbers so low they are measured in mere parts per million. By keeping those numbers consistently tight, we remove noise from customers’ polymerization processes.
Polymer grade propylene is not just “propylene.” We make a grade designed specifically for the needs of polymerization in industries producing polypropylene, acrylonitrile, and propylene oxide. Over years, we learned that even small changes in the feedstock ripple outward—affecting product color, strength, and process efficiency. The technology behind our units has advanced step by step. Early on, we relied on catalytic cracking and steam cracking as our main sources. Today, our lines also include propane dehydrogenation (PDH) units to boost production volumes and tighten quality control even further.
Key specifications we hit include a propylene content in excess of 99.5%, water below 10 parts per million, and negligible oxygen content. We remove a broad range of trace contaminants—sulfur species, mercaptans, carbonyls—recognized for their ability to damage catalysts or leave defects in final polypropylene grades. Our team walks the line each day to ensure that customers running high-throughput polypropylene reactors have the least trouble with fouling, clogging, or color unpredictability.
Our experience shows that each customer is unique in their requirements. Some polypropylene producers request propylene with strictly defined contaminant limits depending on their own proprietary catalyst systems. We listen closely and work hand-in-hand to tweak the fine points of production—never losing sight of large-scale consistency. Small changes in specification can spell millions of dollars in difference to an industrial user.
Polymer grade propylene finds its way into all corners of daily life, and our manufacturing teams take some pride knowing how far our raw material travels from our tanks. The most common destination, by volume, is the polypropylene industry. Polypropylene has grown into one of the world’s most produced plastics, showing up in packaging, automotive parts, fibers, medical equipment, and consumer goods. Our consistent propylene feed lets downstream producers keep their lines running nonstop, day after day, shifting their product lines between everything from clear, rigid sheets to flexible food wraps.
Beyond simple packaging, polymer grade propylene feeds plants making acrylonitrile for ABS plastics, spandex, and synthetic rubbers. It is also a feedstock for making propylene oxide, the starting material for polyurethane foams used in insulation, furniture, bedding, and car seats. We have watched demand rise when auto manufacturing ramps up, or during construction booms—each wave rippling back upstream. As the world looks for lighter car bodies, more reusable packaging, and advanced medical supplies, the demand for reliable polymer grade propylene continues to climb. Our lines must keep pace, no matter the hour.
Customers weighing different sources for propylene often ask about the subtle differences between “polymer grade,” “chemical grade,” and “refinery grade.” Over years in production, we learned that these differences amount to much more than clever marketing. Refinery grade propylene typically clocks in below 90% purity and carries more olefins, dienes, inerts, and sulfur—too dirty for high-level polymerization without additional clean-up. Chemical grade can touch into the low 90% purity range, targeting chemical synthesis for products less sensitive to impurities. Polymer grade, by contrast, shows up to the plant gate as a nearly pure gas, tightly controlled on every impurity. Our job as a manufacturer goes beyond simply producing molecules. We guarantee those molecules meet standards with precision—tested and proven in real reactor environments.
Some of our customers run facilities that produce high-clarity film and medical-grade resins. The difference between consistent propylene specifications and inconsistent supply marks whether their quality assurance teams pass or fail production runs. There are very few second chances in polymer manufacturing. If shipped batches do not meet spec, reworking costs climb, and productivity falls behind schedule. We understand these practical realities because our operations have also faced the challenge of keeping reactors fed, day-in and day-out, with no room for material slippage.
As one of the few producers able to supply substantial volumes of polymer grade propylene, we see a wide spectrum of customer needs. Our operations crews monitor process streams around the clock, tracking quality through each stage. We built laboratories adjacent to our process units for real-time sampling and analysis to minimize delays. Instruments like gas chromatographs read out purity results in minutes. If any batch shows numbers drifting beyond strict cutoff points, we trace the root cause immediately—whether it comes from upstream feed, a valve leak, or column efficiency. Years of troubleshooting gave us both humility and confidence. Problems can arise at any stage, but persistent vigilance keeps customers in business.
Batch slips sometimes appear due to unexpected fouling, catalyst degradation, or sudden temperature swings. There are no templates for solving every issue, only a pattern of close testing, operator intuition, and teamwork. Small investments in upgraded distillation trays, automated online monitoring, and predictive maintenance make a measurable difference. Once a technical challenge pops up—be it high sulfur, moisture spikes, or odd trace contaminants—customers feel these issues in their output yields. We work with them to tune blend ratios or feed schedules when prices or raw material mixes force changes. Our years in the business taught us that responsive plant support is just as valuable as the raw material itself.
Every batch of polymer grade propylene runs under tight scrutiny for both quality and safety. On the production side, we manage risks involving flammable gases, high-pressure equipment, and regulatory compliance. Our frontline teams receive up-to-date safety training, and the plant is designed with multiple layers of containment, sensors, and emergency controls. Beyond the plant, we consider transportation safety—coordinating with skilled logistics partners to move propylene using pipelines, purpose-built railcars, or pressurized tankers. Our teams track shipments in real time, following all labeling and leak prevention measures required by local and international law.
Sustainability is not a future issue, but a present obligation. We recover heat during separation processes, recycle off-gas as much as possible, and invest in energy efficiencies throughout the site. As carbon reduction targets push the chemical industry forward, we are investigating options for using renewable propane source material for future propylene production. Each step requires a careful balance between environmental targets, fiscal pressure, and technical feasibility. We discuss these approaches openly with our downstream partners, knowing that the supply chain for plastics starts well before polymerization—and sustainability must be baked in at the root.
Some customers are piloting propylene made from bio-based or waste-derived sources. As a large-scale manufacturer, we monitor new technology trials but keep rigorous cost and performance evaluation methods. If a novel route matches traditional sources in terms of impurity control and reliability, we remain open to adopting new feedstocks. For now, large-scale production still depends on proven hydrocarbon-based streams—but our teams watch the horizon for both commercial and regulatory shifts. Change is part of the job, and our engineers stay ready to incorporate breakthroughs as they come.
Recent years have seen global demand for polypropylene continue to outstrip GDP growth. Lightweighting in transportation, shifts in consumer packaging, and hygiene trends after the pandemic all factored into surging demand for propylene. We notice this uptick directly—orders pile up, and the market tightens in ways that affect scheduling, stocking, and pricing. Our response centers on reliability: boosting throughput, improving plant uptime, and keeping open lines of communication with clients.
Regions outside North America and Europe are building new capacity for polyolefins, which means local markets are seeking secure propylene supplies. We field requests from domestic plants and international partners alike. Each locality brings different rules and technical needs. Over time, our experience handling varied compliance standards gives us an edge in customizing shipments and paperwork to suit each port, customs office, or regulatory agency.
On the technical front, we recognize the push for “on-purpose” propylene production methods is influencing both how much is made and how it’s priced. Traditional steam cracking and fluid catalytic cracking units mainly produce propylene as a byproduct. Dedicated PDH (propane dehydrogenation) units give us more direct control and improved efficiency, especially for high-purity requirements. Our investment in on-purpose units followed direct requests from key polymer producers who asked for greater volume certainty—and more stable supply when refinery slates shift.
Some industry colleagues concentrate on commodity production, while we see real value in tight margin control and relationship building. Our technical teams do not take shortcuts, and we communicate openly during supply crunches or maintenance periods. Customers call us about technical bottlenecks, not just contracts. Our approach is rooted in the simple reality that the polymer value chain is only as strong as its weakest link.
Production of polymer grade propylene faces pressures on several fronts. Crude oil price swings influence the economics of both steam cracking and propane dehydrogenation. Regional disruptions—hurricanes, power grid events, labor shortages—can challenge our ability to deliver. We work to forecast trouble spots and stagger preventive maintenance to keep output up. Our logistics managers regularly vet alternative routes and suppliers to manage risks before they reach our customers.
One ongoing challenge is impurity management as raw material slates shift. Changes to upstream refinery operations often mean unpredicted trace compounds show up in feedstocks. Our analytic teams keep a close watch, sampling frequently to spot anything unfamiliar. In the past year, we have responded to new regulatory standards targeting lower sulfur and diene levels across different regions. Each regulatory change brings fresh requirements for documentation, batch tracking, and sampling frequency. It can feel like a lot of paperwork, but we know these controls ultimately protect both operators and end users. Staying ahead of the curve means investing in well-trained personnel, up-to-date laboratory equipment, and thorough batch records that can withstand close audit.
Customers depend on transparency to meet their own compliance needs. We provide certificates of analysis validated by independent labs, and we help partners prepare for inspections from government authorities or multinational end users. There is no substitute for a reputation built on decades of reliable supply and straight answers—whether conditions are calm or challenging.
Decades of experience in polymer grade propylene prove that no two days are identical, and no two customer requirements are quite the same. Trends in the plastics world evolve quickly, with new environmental targets, fresh polymer technology, and shifting legal standards. Our team has learned to adapt by listening as closely as we speak. We keep a watchful eye on purity, a disciplined hand on documentation, and real-world flexibility in meeting client needs—whether ramping up supply during market surges, rerouting product during logistics disruptions, or helping resolve a technical problem at the plant floor.
Polymer grade propylene is a backbone of the chemical industry—feeding processes that touch everything from medical devices to packaging to construction materials. We understand the demands placed on this molecule at every stage. As a manufacturer, we see the entire journey from raw hydrocarbon to finished polymer, and our commitment stands on the experience earned from solving real-world problems for real-world users. From our production lines to yours, our promise is a product that meets the mark, batch after batch, all year round.
