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HS Code |
371956 |
| Cas Number | 106-98-9 |
| Molecular Formula | C4H8 |
| Molar Mass | 56.11 g/mol |
| Appearance | Colorless gas |
| Odor | Mildly sweet odor |
| Boiling Point | -6.3°C |
| Melting Point | -185.3°C |
| Density | 0.619 g/cm3 (at 20°C) |
| Vapor Pressure | 2,236 mmHg (at 25°C) |
| Solubility In Water | 24 mg/L (at 25°C) |
| Flash Point | -76°C (closed cup) |
| Autoignition Temperature | 385°C |
| Refractive Index | 1.3917 (at 20°C) |
As an accredited 1-Butene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 1-Butene is supplied in a high-pressure steel cylinder, containing 50 kg, clearly labeled with hazard warnings and manufacturer information. |
| Container Loading (20′ FCL) | **Container Loading (20′ FCL) for 1-Butene:** 1-Butene is loaded in 2 ISO tanks (approximately 35 tons each) per 20-foot container. |
| Shipping | 1-Butene is shipped as a compressed, flammable gas in high-pressure cylinders or bulk tanks. Containers must be clearly labeled and handled with care, following regulations for hazardous materials. It should be kept away from heat, sparks, and open flames. Proper ventilation and grounding are required during transport and storage. |
| Storage | 1-Butene should be stored in tightly closed, properly labeled cylinders or pressure vessels, away from heat, sparks, open flames, and direct sunlight. The storage area must be well-ventilated, dry, and cool, with appropriate grounding and bonding to prevent static discharge. Keep separate from oxidizing agents and ensure adequate fire-extinguishing systems are available. Store in compliance with local regulations. |
| Shelf Life | 1-Butene has a typical shelf life of 12 months when stored in tightly sealed cylinders under recommended, cool, and dry conditions. |
Applications of 1-Butene in Industrial ManufacturingAs one of China’s specialized manufacturers, we supply 1-butene with consistent quality for established downstream uses. We focus on industrial partners who need reliable feedstock for essential production, ensuring detailed technical and compliance support across every stage of application. Below, we outline key industrial scenarios where 1-butene delivers measurable value in real-world production and finished goods supply chains. 1. Linear Low Density Polyethylene (LLDPE) Co-Monomer for Flexible Packaging1-Butene serves as a critical co-monomer during the polymerization of linear low density polyethylene, imparting well-controlled comonomer branching that directly tunes the mechanical performance and sealing properties of films used in food and hygiene flexible packaging. Polyethylene producers integrate this olefin to engineer grade-specific blends that balance tensile strength, tear resistance, and clarity to fulfill high-volume packaging standards. We support converters who demand granular documentation for input quality and compositional uniformity during scale-up and regulatory audits. Industry compliance standards
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2. Production of Polybutene-1 for Hot Water Piping and SealantsDownstream polymerization plants use 1-butene as the sole monomer to manufacture polybutene-1, valued for its long-term thermal and pressure stability in piping systems and industrial sealant compounds. The material’s unique molecular regularity supports formulation of pipes with resistance against creep and stress cracking, making it suitable for hot and cold potable water transport as well as soft compound blends for industrial sealing and waterproofing applications. We supply documentation and traceability to support potable water approvals and long-term QC validation. Industry compliance standards
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3. C4 Olefin Feedstock for Oxo Alcohols and Plasticizer ProductionIn oxo synthesis, 1-butene enables manufacturers to generate value-added C4 alcohols—such as n-butanol and isobutanol—which serve as core feed molecules for softening agents in PVC plastics and coating applications. Integration of 1-butene in hydroformylation units results in targeted control over product distribution and yield, optimizing downstream supply of plasticizer components for wire insulation, medical IV bags, and interior automotive parts. We work with plasticizer producers to ensure uninterrupted feedstock quality and batch-to-batch certification as per global chemical regulations. Industry compliance standards
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4. Intermediate for the Synthesis of Butene-based SurfactantsAdvanced surfactant manufacturers selectively hydroformylate and further modify 1-butene to build non-ionic and anionic surfactant molecules for use in industrial cleaning formulations, metalworking fluids, and textile processing aids. This stepwise modification opens routes to alkoxylate or sulfonate chemistries delivering specified wetting and emulsifying behavior. We provide this sector with audit-grade, low-impurity feedstock, ensuring reliable process yields and traceable supply documentation responding to downstream QC verification. Industry compliance standards
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5. Butene-Based Coating Resins for Adhesive and Sealant MarketsResin formulators utilize catalytic copolymerization with 1-butene to achieve grades of amorphous polyolefin resins, widely used to tailor melt viscosity and adhesion in hot melt adhesives, pressure-sensitive tapes, and construction sealant applications. In this segment, material consistency and narrowly specified branching level provide downstream processors with the formulation range needed to meet varying regulatory tests and long-term adhesive performance in demanding environments. We track and support compliance through process validation documentation and test data summary sheets as part of every shipment. Industry compliance standards
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Competitive 1-Butene prices that fit your budget—flexible terms and customized quotes for every order.
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Tel: +8618136850665
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Every day in our plant, teams move cylinders and tankers containing 1-Butene between the cracking furnaces and our filling bays. The smell is a giveaway: faintly sweet, a reminder of the alkene’s double bond and reactive nature. 1-Butene (C4H8) hasn’t grabbed the common imagination, but its track record is clear from the warehouse to the lab bench— fueling supply chains and supporting a web of industries. We’ve handled it in various grades, from polymerization-pure streams to industrial bulk, and have learned that versatility isn’t just about application—it’s about shipping, handling, field performance, and clear communication.
Unlike heavier olefins, 1-Butene, thanks to its straight chain and terminal double bond, lies at the threshold where refiners separate commodity chemicals from specialty streams. No two batches are exactly alike, but consistency matters to our customers, so our monitoring systems sample product continuously. Operators tune the distillation columns based on what the lab finds, adjusting heat and feedstock mix. For bulk buyers—polyethylene makers, chemical converters, or rubber factories—slight deviations in isomer content or impurities change how catalysts react.
We source feed from steam crackers that start with naphtha or light gas, often marrying logistics between upstream refineries and our on-site units. Each load’s traceability starts with a raw material certificate and finishes with our own chromatograph reports. Chemists here still remember the smell of burnt seals or the sticky residue from traces of 2-butene in a batch that wasn’t cleaned properly. Failures are rare now, as we invested in better purifiers and on-line analyzers.
You’ll find requests for “polymer grade,” “chemical grade,” and “refinery grade.” Each has a distinct profile; in truth, the lines can blur in daily work. For manufacturers crafting LLDPE (linear low-density polyethylene), purity leads the conversation—above 99 percent 1-butene, with low sulfur and water, because even a tiny amount of acetylene poisons catalysts in large polymerization reactors. Our plant has tailored drying and scrubbing units to hit those specs batch after batch, because reliability underpins our reputation.
In elastomer synthesis, polymerization isn’t always so sensitive. Some customers, particularly in synthetic rubber, want volume and consistency but accept more relaxed thresholds for isomer content if we can promise on-time delivery and batch-to-batch repeatability. This is where our operations teams excel. Swifter changeovers and close contact with clients help us ship the right product without holding back higher-purity stock: not everyone needs ultra-pure feed.
Labs onsite use gas chromatography with flame ionization detectors, and we routinely inject liquid product back through specialized columns to check for C3H6 (propene) and C4H8 isomers. In our experience, the presence of 2-butene or the cis/trans ratio affects polymer branching. Our technical groups have worked with several clients troubleshooting why a reactor’s branching profile strayed from benchmarks, only to find a difference in isomer ratios was decisive. We respond by confirming, not assuming, that the spec on the shipping documents matches what left the tank.
Our warehouse also ships out plenty of isobutylene and a few C5 and C6 streams, but 1-Butene claims a unique role. For resin producers, the difference between 1-Butene and 2-Butene is more than nomenclature—it’s fundamental reactivity. The double bond at the terminal carbon in 1-Butene enables targeted reactions in Ziegler-Natta or Phillips catalysts. We’ve stood beside engineers anxiously running their first batches of LLDPE, stepping them through startup so they could see how 1-butene copolymerizes and slots into the polyethylene backbone, giving the end product precisely the right mix of toughness and flexibility.
With 2-butene or isobutylene, the branching point sits elsewhere on the chain, limiting what can be done in controlled polymer growth. For rubber compounding, some processes prefer isobutylene’s methyl branching, but for film resins, clarity and strength link closely with uniformity in 1-butene placement. If a customer approaches us for advice, we don’t rely just on reference catalogs—we dig out decades’ worth of experience, bring them to the control room, and go over the molecular structure lines drawn on our whiteboards.
Shipping logistics change with each product. 1-butene, a gas at room temperature, finds itself in pressurized tanks. As soon as a vessel is filled, our team confirms pressure and checks seals to avoid losses. Unlike heavier olefins, 1-butene cannot be handled in open drums. Leaks burn off rapidly and can create safety risks. Training matters—every operator learns how to isolate valves and how to respond to leaks, because we’ve seen a lot over the years, and no checklist beats experience.
Synthetic routes for 1-Butene expand each year. The classic one remains as a co-monomer in polyethylene, especially for LLDPE films seen in packaging and agricultural plastics. Our plant has worked directly with film extruders who ask for a shift in branching content, fine-tuning end-use properties. We’ve coordinated dock-to-dock runs where a tanker’s load was scheduled to complete a major supermarket film run, with inspectors watching the feedstock tank gauge as the extruder ran. Margins can be tight in this business, but reliability runs deeper than price. We focus on unbroken supply, backed by redundant storage and a logistics crew who know every detour.
In the automotive sector, EPDM rubber manufacturers draw on 1-Butene for precise tuning of final polymer properties. Feedstock quality impacts everything from gaskets on engine blocks to weather stripping on car doors. In one field project, when a customer traced an anomalous batch of sealant to slightly raised methylacetylenes in our product, we worked side by side on investigation panels to troubleshoot and adjust plant operating conditions, restoring conformity in subsequent shipments.
Alkylation units use 1-Butene to generate high-octane additives. Fuel markets shift quickly—one quarter can bring a glut, the next a sudden shortfall, especially as regulations adjust to climate goals. Our teams have installed faster sampling instruments so we can pivot to changing specs faster. Working with blenders, we have learned that even a small drift in unsaturate levels can ripple through downstream blending; it requires speedy feedback and steady collaboration.
Other products, like maleic anhydride and butanols, draw on 1-Butene as a feedstock for further chemical transformation. Our technical group answered countless questions about reactor fouling, stoppages, or off-color batches, often discovering an interaction between contaminants and metal surfaces in the client’s process. No one likes downtime, so we often share lessons learned—even from unrelated sectors—so others can avoid mistakes. For water-based adhesives and coatings, the difference between a smooth cure and sticky failure can trace all the way back to an ‘invisible’ glitch in the original feed.
Chemical manufacturing doesn’t tolerate shortcuts. We’ve experienced first-hand what happens when assumptions slip into practice. Years back, outdated detectors let a slug of sulfur pass undetected. It ended up contaminating a batch earmarked for polymerization, forcing an urgent recall and painstaking requalification. Since then, our quality group performs full-spectrum impurity analysis, going beyond what the certificate of analysis says. Daily batch sampling and robust traceability are not mere checkboxes—they’re lessons paid for in avoided waste and preserved trust.
Controlling water, oxygen, and trace metal content pays off for clients. A single ppm of water in a polymer-grade run can create off-spec resin for days, and reprocessing costs for everyone involved. We invested in dehumidification and inerting systems because the upstream risk—moisture ingress from a hose fitting left open after rain—can undercut the best lab work. These measures are hard-earned, rooted in shutdowns and after-hours damage control from a decade ago.
Some suppliers ship only minimum analysis reports; we deliver full impurity breakdowns and keep archived reference samples. The difference is visible when auditing upstream—process transparency reduces disputes and shrinks downtime. Our on-site teams walk customers through the system: how a valve setting, pump speed, or temperature swing upstream can change end performance. We’ve been actively invited to line trials, checking product at the injection port and pushing for real-time feedback, ensuring fast correction if anything strays from expected performance.
Most of our customers have operated their facilities for years, pushing throughput and quality levels. They don’t want generic assurances—they want specifics and actionable data. We bring credibility because we share both what worked and what fell short. Our technical support crews field direct calls from production managers rather than customer service scripts. If a glitch emerges, we drive onsite and join a root cause analysis. We’ve seen competitors hide behind slow replies; our field engineers prefer to visit, sample, and solve.
Collaboration makes the difference between successful runs and lost batches. Once, a converter ran into polymer filter clogging. Instead of exchanging blame, we dissected both polymerization and extrusion parameters. In the end, the solution wasn’t in the base chemistry but a minor contaminant that built up in our shipping tanks—a fix implemented across the board. Recovering from disruptions, or even anticipating them, earns loyalty better than any marketing claim.
We maintain a feedback loop, collecting customer input through scheduled review meetings, not just after issues arise. Our product planners use this to schedule maintenance or plan for grade changes, smoothing spikes in demand. Direct customer feedback led us to redesign part of our purification train for better aldehyde removal. Sharing goals, not just tolerances, lets us improve both supply reliability and downstream product success.
1-Butene demands respect in handling. Every new hire receives practical, scenario-driven training. We emphasize response to leaks, proper ventilation, and isolation protocols, having seen real-world emergencies unfold from mixing product lines or improper venting. Long before sustainability made headlines, we isolated and recycled vent gases, minimizing environmental claims and, more importantly, protecting worker health.
Environmental agencies scrutinize venting and fugitive emissions. We record data from gas detectors in the yard and routinely adjust our leak detection systems. Investments in improved sealing and automated shutdowns have prevented many potential incidents. One event involved an unexpected equipment failure releasing 1-Butene into the containment area—response time improved because we rehearsed and tracked every step.
Resource stewardship means more than compliance. As the world pushes for decarbonization and reduced volatile organic emissions, our operations have intensified recycling programs. By capturing and recompressing vent streams and updating our containment fields, we keep emissions well below targets. Process intensification—smarter reactors, energy recovery, and water reuse—feeds into our daily practices, not just ESG reports.
In partnership with neighboring plants, we’ve explored closed-loop systems to return unused butene to the process stream, eliminating waste and reducing both cost and environmental impact. We seek workable solutions, learning from each trial and recalibrating as field conditions evolve.
The chemical world doesn’t stand still, and neither do our production teams. Overhauling old distillation trains and installing new chromatographs mark only the start. We’ve partnered with catalyst suppliers to develop proprietary purification sequences, squeezing out additional performance from our primary cracker feed. By focusing on minimizing heavy ends and removing trace unsaturates, we sharpen the reactivity profiles for demanding polymerization clients.
Advances in process control have shaved losses and slashed startup times. Plant operators use real-time analytics dashboards to adjust temperature and pressure profiles, helping prevent slug flows or sudden impurities. We’ve invested in more robust valve designs and more reliable actuator systems, after analyzing historical downtime and failure reports. Staff run daily scenario drills, and technicians share insights from the control room and the field, promoting best practices through shared learning.
Energy consumption remains a practical concern. We track and chart our utilities use, running comparative reviews against peer plants. Energy recovery cycles—using hot process streams to preheat feed—cut both cost and carbon. Even small process tweaks, like improving compressor cycle times or tuning fired heater controls, result from trial, error, and honest evaluation.
On the logistics end, we stagger deliveries to avoid demurrage fees, working with carriers to synchronize offloading schedules with ease of access to client storage. Every hour saved on the ramp adds up over the year, freeing time and resources for customer support. We reengineer tank farm layouts to minimize cross-contamination risk, constantly reviewing line-up procedures based on hands-on incident reviews.
Daily effort at the factory shows up not just in our order logs, but in the conversations with technical teams, the lessons written on control room bulletin boards, and the customer relationships built over years of shared problem-solving. 1-Butene runs through our pipes, but its success hinges on everything from the quality of the upstream naphtha to how late at night our technicians run final system checks before shipment.
We keep learning from every batch, every troubleshooting call, and every new project. The chemical world thrives on partnerships, knowledge sharing, and a willingness to adapt. From the molecular design of a shipping hose to the planning of turnaround maintenance, every detail feeds into the outcome our customers see. 1-Butene isn’t just a commodity—it’s the sum of thousands of carefully executed steps, honest feedback, and a commitment to doing the job right, every time.