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Ethylene

    • Product Name Ethylene
    • Alias Ethene
    • Einecs 200-838-9
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
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    Specifications

    HS Code

    486765

    Chemical Name Ethylene
    Chemical Formula C2H4
    Molar Mass 28.05 g/mol
    Appearance Colorless gas
    Odor Faint sweet odor
    Density 1.178 g/L (at 0°C and 1 atm)
    Melting Point -169.2°C
    Boiling Point -103.7°C
    Solubility In Water Slightly soluble
    Cas Number 74-85-1
    Flammability Highly flammable
    Vapor Pressure 51.0 atm (at 20°C)
    Critical Temperature 282.4 K
    Critical Pressure 50.4 atm
    Structure H2C=CH2

    As an accredited Ethylene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Ethylene is packaged in a high-pressure steel cylinder, labeled hazardous gas, containing 50 liters, with valve protection and safety markings.
    Shipping Ethylene is shipped as a compressed gas or cryogenic liquid in specialized, high-pressure cylinders or bulk containers. It is highly flammable and requires proper labeling and handling according to hazardous materials regulations. Transport vehicles must be well-ventilated, and precautions are taken to prevent leaks, ignition sources, and exposure during transit.
    Storage Ethylene is stored as a pressurized, liquefied gas in specially designed steel cylinders or storage tanks. These containers must be kept in cool, well-ventilated areas away from heat sources and ignition. Tanks are equipped with safety relief devices, and storage areas require proper signage and grounding to prevent static discharge, ensuring safe handling due to ethylene’s flammability and explosiveness.
    Application of Ethylene

    Applications of Ethylene in Industrial Manufacturing

    As a core upstream material in the petrochemical supply chain, ethylene supports several high-value sectors through continuous, large-scale industrial production. Our facility supplies high-purity ethylene for fully-integrated downstream operations in polymers, chemical intermediates, and packaging, among others, with comprehensive commitment to regulatory compliance and process reliability.

    1. High-Density Polyethylene (HDPE) and Low-Density Polyethylene (LDPE) Resin Production

    Polyethylene manufacturing constitutes the largest downstream use of ethylene, relying on precise feedstock conversion for consistent resin quality. Ethylene enters polymerization reactors under tightly controlled pressures and process conditions, where catalysts convert gas-phase ethylene into various grades of polyethylene granules suitable for molding, extrusion, and blow molding applications. Manufacturers in this sector must align their operations with evolving food contact, packaging, and consumer safety regulations specific to end-use markets.

    Industry compliance standards

    • EU Regulation (EU) No 10/2011 on plastic materials for food contact
    • FDA 21 CFR 177.1520 (U.S. Food Contact Polymers)
    • ISO 9001:2015 (Quality Management System for process control)
    • GB 9685-2016 (Chinese National Food Safety Standard for food contact chemicals)

    Typical usage ratio

    • Ethylene accounts for approximately 99–100% molar ratio in the polymerization charge; comonomers or catalysts are introduced depending on grade. Adjustments depend on density and branching requirements.

    Downstream process integration

    • Feedstock gas is introduced into high-pressure or slurry-phase reactors, where it undergoes polymerization via the Ziegler-Natta or Phillips catalyst technique. Downstream processing includes pelletizing, drying, and compounding for tailored granule properties.

    Final product types

    • HDPE and LDPE resin pellets for film, container, pipe, and cable insulation applications
    • Blow-molded bottles, bags, and industrial containers
    • Extruded sheets for thermoforming and packaging

    2. Ethylene Oxide Synthesis for Surfactants and Glycol Intermediates

    Ethylene’s controlled oxidation produces ethylene oxide, an essential intermediate for surfactant production and antifreeze applications. Ethylene is metered with oxygen over a silver catalyst to yield ethylene oxide, which downstream facilities use for further synthesis of ethylene glycol or non-ionic surfactants. Facilities handling this pathway must implement safety controls due to ethylene oxide’s reactivity, with regulatory requirements dictating emissions management and workplace exposure limits.

    Industry compliance standards

    • OSHA 29 CFR 1910.1047 (Occupational exposure to ethylene oxide)
    • REACH Regulation (EC) No 1907/2006 for chemical handling
    • ISO 14001:2015 (Environmental Management Systems)
    • EU CLP Regulation (EC) No 1272/2008 for hazardous chemicals

    Typical usage ratio

    • Ethylene is the dominant hydrocarbon feedstock in the oxidation reactor, typically comprising 70–75% of the stoichiometric mix with oxygen, depending on targeted conversion efficiency and minimization of byproducts.

    Downstream process integration

    • After purification, gaseous ethylene is continuously fed to fixed-bed catalyst reactors where oxidation yields ethylene oxide. Automated recovery strips unreacted ethylene and byproducts before downstream batch or continuous processing into glycols or surfactant precursors.

    Final product types

    • Ethylene oxide intermediates for non-ionic surfactant blends (detergents, wetting agents)
    • Monoethylene glycol (for antifreeze, PET resin, coolant fluids)
    • Technical-grade glycols used in polyester fiber production

    3. Polyvinyl Chloride (PVC) Production via Ethylene Dichloride Pathway

    PVC manufacturing uses ethylene in the synthesis of ethylene dichloride (EDC), which subsequently converts to vinyl chloride monomer (VCM), the direct feedstock for PVC resin. Ethylene undergoes direct chlorination with chlorine gas to produce EDC, which hydrochloro-dehydrochlorination then splits to generate VCM. Industry participants adopt robust DCS controls and emissions abatement aimed specifically at chlorinated intermediates and residual monomers in line with stringent environmental and product safety expectations.

    Industry compliance standards

    • OSHA 29 CFR 1910.1017 (Vinyl Chloride exposure)
    • EPA 40 CFR Part 61 Subpart F & J (Air emissions from EDC/VCM/PVC plants)
    • ISO 1060-1:1998 (PVC resins–specifications and test)
    • EN 14041:2018 (CE marking for PVC flooring)

    Typical usage ratio

    • Ethylene comprises 48–52% (molar basis) of reactants in EDC synthesis, with ratio adjustments guided by target VCM yield and reactor design.

    Downstream process integration

    • Chlorination units combine purified ethylene and chlorine; resulting EDC is purified and subjected to pyrolysis for dehydrochlorination, producing VCM that polymerizes in suspension or emulsion reactors to recover PVC powder.

    Final product types

    • PVC resins for pipes, cable insulation, window profiles, and films
    • Compounded PVC granules for flooring, medical tubing, and profiles
    • PVC pastes for synthetic leather and coating applications

    4. Linear Alpha Olefins (LAOs) for Polyolefin Comonomers & Lubricant Base Stocks

    Oligomerization of ethylene yields linear alpha olefins, which downstream manufacturers blend as comonomers for polyolefin modification or as high-performance lubricant components. Precise control over process pressures and catalysts enables tailored LAO chain lengths such as 1-butene, 1-hexene, and 1-octene, each with different downstream polymer chain branching or flow property influence. Market-specific specifications demand accurate control over purity and trace metal contaminants as a prerequisite for further polymerization or refining.

    Industry compliance standards

    • ISO 9001:2015 for process and quality management
    • ASTM D5443 for LAO purity measurement
    • REACH registration for LAOs as monomers (EU chemicals regulation)
    • API Group IV base oil standards (where LAOs are lube feedstocks)

    Typical usage ratio

    • Ethylene is fed at 100% in the oligomerization stage; the conversion ratio to specific LAOs (e.g., 1-butene vs. 1-hexene) depends on catalyst selection and reactor conditions, fine-tuned for each product run.

    Downstream process integration

    • Feedstock enters oligomerization reactors with tailored nickel or Ziegler catalysts, splitting product effluent into separated LAO fractions through distillation and purification steps for immediate downstream polymer use or lubricant blending.

    Final product types

    • 1-Butene, 1-hexene, 1-octene co-monomers for LLDPE and specialty HDPE resins
    • High-purity LAO base stocks for synthetic lubricants
    • LAO feedstocks for plasticizer and detergent alcohol production

    5. Ethylbenzene and Styrene Monomer Synthesis for Plastics and Foams

    Ethylene acts as a core reactant with benzene in alkylation units to form ethylbenzene. Downstream, ethylbenzene dehydrogenation yields styrene monomer, pivotal in producing expanded polystyrene, ABS, and SAN copolymer resins. This segment operates under strict stewardship of aromatic hydrocarbon emissions and adherence to food or electronic-grade styrene specifications, requiring advanced purification and quality monitoring throughout production.

    Industry compliance standards

    • EN ISO 14528 (requirements for styrene in food contact applications)
    • EPA 40 CFR Part 63 Subpart FFFF (styrene/ethylbenzene MACT for air emissions)
    • ASTM D5136 for styrene monomer purity
    • JIS K6922 for polystyrene resin quality (Japan)

    Typical usage ratio

    • Ethylene and benzene are introduced at near-equimolar ratios in alkylation reactors; plant operation optimizes ethylene use at 98–102% stoichiometry, depending on desired ethylbenzene yield and catalyst life cycle.

    Downstream process integration

    • Fresh ethylene is added to alkylation reactors for direct conversion to ethylbenzene, followed by vapor-phase dehydrogenation to styrene. Final styrene undergoes multiple distillation and stabilization steps to meet downstream resin polymerization purity demands.

    Final product types

    • Styrene monomer for general-purpose polystyrene (GPPS) and high-impact polystyrene (HIPS)
    • Expanded polystyrene (EPS) foams
    • ABS (acrylonitrile butadiene styrene) and SAN (styrene acrylonitrile) engineering thermoplastics

    6. Ethanol Production via Direct Hydration Process

    Industrial ethanol facilities utilize direct hydration, reacting ethylene with water vapor over acidic catalysts. This non-fermentative route sees widespread adoption where bioethanol feedstock is less accessible, allowing high-throughput ethanol production for beverage, pharmaceutical, and industrial solvent sectors. Plants manage conversion to meet purity grades required by downstream users, with quality controls tuned for regional consumption and excise standardization.

    Industry compliance standards

    • USP Monograph for ethanol (pharmaceutical/food grade)
    • EN 15376 for ethanol as a biofuel blendstock
    • ISO 9001:2015 for process control
    • AOAC 973.23 (analytical standard for ethanol determination)

    Typical usage ratio

    • Ethylene is equilibrated at a 1:0.6–0.7 molar ratio with steam in catalytic reactors; ratios are adapted by temperature and catalyst activity to reach target yields above 95% conversion in continuous plants.

    Downstream process integration

    • Gaseous ethylene and water vapor feed pressurized hydration reactors; product streams undergo rectification to separate ethanol from excess water and side products to specified grades (industrial, food, or pharmaceutical).

    Final product types

    • Denatured ethanol for industrial cleaning, extraction, or fuel blending
    • Food grade and beverage ethanol
    • Pharmaceutical injection and disinfectant ethanol
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    Certification & Compliance
    More Introduction

    Ethylene: A Manufacturer’s Perspective on the Building Block of Modern Industry

    Our Experience in Ethylene Production

    Decades spent operating large-scale steam crackers and constantly refining processes have taught us more than chemistry textbooks ever could. Ethylene comes from the high-temperature breakdown of hydrocarbons—mostly naphtha, ethane, or propane. Years on the ground inside these plants remind you that producing ethylene isn’t just about getting the most gas out the door. It’s about minimizing energy use, reducing unwanted byproducts, and maintaining a safe, stable operation. We run continuous monitoring and process control day and night because even a subtle shift in feedstock quality or furnace temperature can cause unwanted shutdowns or off-spec material. Field teams have learned there’s no such thing as a ‘routine hour’ in ethylene plants: valves need checking, leaks need prevention, and teams need support any time, every day.

    The ethylene we make isn’t a rough industrial output. We target exceptionally high purity—routinely upwards of 99.9 percent—especially for customers using it to polymerize polyethylene or to make chemical intermediates like ethylene oxide or styrene. Plant operators value instant feedback from gas chromatographs and sensors. If trace oxygen or acetylene creeps in above a tight threshold, rejection of lots becomes necessary. Our investment in fine-tuned purification and fractionation equipment defends against product downgrade and maintains a clean pipeline.

    Specifications and Product Range

    We supply ethylene as a colorless, flammable gas in both bulk and cylinderized formats. It’s not just a commodity. Specifications change with customer application. Food packaging clients buying high-density polyethylene resin want ethylene that meets strict standards on contaminants like carbon monoxide and sulfur. Medical applications—such as sterilization processes—require an even tighter handle on trace impurities, because even tiny residues can yield reactions that compromise sterility or cause unwanted byproducts in sensitive formulations.

    Plant operations store ethylene at both atmospheric and pressurized conditions, depending on logistics needs. For large customers, we load liquid ethylene into insulated ISO tanks, certified to meet the highest safety standards. For users incorporating smaller volumes, compressed cylinders give safer handling at lower pressures while still guaranteeing tight containment and traceable batch history. Each batch carries data on moisture, non-hydrocarbon impurities, and sampling date, recorded and reviewed by our lab team to ensure full traceability.

    Ethylene in Action: Real-World Applications

    Year after year, our plants see surges in demand during construction season. Polyethylene pipes—tougher and lighter than old steel—rely on our ethylene for strength and durability. Each lot must polymerize reliably, so we track polymerization kinetics and collaborate with downstream processors. We guide adjustments to the molecular weight of the end product by tuning ethylene feed rates and purity, supporting custom requests for blow-molding, injection grades, or film lines.

    Another segment that keeps us busy is the automotive industry. Lighter vehicles rely heavily on plastic components, mostly polyethylene or ethylene-propylene blends. These applications demand clear consistency from batch to batch, as shock absorption and weather resistance need to remain predictable. Recycled material usage brings its own set of challenges; purer ethylene inputs minimize issues with discoloration or off-odor, both common risks when quality drifts downward.

    In agriculture, ripening specialists value our ethylene for speed and predictability. Banana ripeners and tomato packing houses use controlled-release generators or bottle systems to deliver ethylene bursts at precise concentrations. We provide technical support for dosing rates, and we stress the need for proper ventilation and temperature control in storage rooms so that every pallet ripens at an even pace, which reduces waste and increases market flexibility for growers. The handling risks for compressed gas remain ever-present, so we train buyers on storage best practices as well as rapid response protocols for leaks or exposure.

    Ethylene oxide production, another key sector for us, involves tightly integrated logistics with partner plants. Our dedication to on-time delivery assures customers that their batch reactors receive the promised supply—even when weather or market swings create turmoil in feeding gas pipelines. To maintain this supply chain, our operations team monitors not just the tonnage shipped, but also energy balances, emission points, and overall plant reliability. Much more goes into reliable ethylene supply than most users ever see.

    Differences Between Ethylene and Other Feedstocks

    Customers sometimes ask why ethylene sets itself apart in scale and influence compared to other building blocks like propylene, butadiene, or benzene. Ethylene’s small, two-carbon structure lets it enter countless chemical pathways—its double bond reacts with almost anything under the right conditions. Propylene production ratios lag behind ethylene, limiting availability and pushing prices higher in some years. For polymers, polyethylene ranks as the world’s single largest plastic by volume, using more ethylene than any other intermediate. Polypropylene, relying on propylene, isn’t as easy to process for thin films or stretch wrap.

    Butadiene and benzene open up other chemistry but can’t match ethylene’s flexibility or safety. Butadiene extraction is tricky and occasionally hazardous, with a higher risk of off-gassing or process upsets. For benzene, health and regulatory pressures now limit its use in bulk packaging or consumer goods, giving ethylene-based chemistry a logistical and compliance edge. Our engineers see firsthand how customers appreciate ethylene’s relative safety profile—flammable, yes, but not reprotoxic or carcinogenic at regulatory exposure levels, which makes compliance more straightforward for manufacturers downstream.

    That said, each product stream has its own challenges. Propylene producers must manage shifting yields as refinery slates vary by region. For ethylene, we predict production rates more reliably due to robust, globally available feedstock sources and decades spent refining the steam cracking process to an industrial art. These strengths let us ensure a more stable, predictable price and supply compared to some other chemicals. This reliability matters when downstream supply chains stretch across continents.

    Challenges and Continuous Improvement in Manufacturing

    Operating crackers and downstream separation plants stresses equipment and people. Fouling and carbon buildup in furnaces force costly shutdowns and maintenance. Our technical teams learned to look for subtle signs of deposits early by tracking temperature gradients across coils and analyzing pressure drop data. Online cleaning methods, though expensive, help delay full shutdowns, buying crucial hours or days during high-demand periods. Monitoring the smallest swing in temperatures and tweaking the steam-to-hydrocarbon ratio can shave energy use, cut pollution, and add significant savings over a year.

    Our safety teams embrace hard-earned lessons. Ethylene gas accumulates unseen in confined spaces. Training cycles repeat across shifts, with mock leak drills and reviews after every real-world event. We improve gas detection and evacuation response each year. Replacing old flange gaskets, inspecting valves, and using reliable, low-bleed control systems all reduce risk, but nothing replaces a vigilant, empowered workforce. Plant workers’ feedback comes back to management and shapes improvements. Near-miss reports drive changes in standard operating procedures along with investment planning. We support every operator and maintenance worker, investing in gear, training, and open communication.

    Regulation pushes us toward lower energy use and cleaner emissions every year. Our plants adopted newer furnace technologies—oxy-fuel firing, low-NOx burners, better heat integration—well before they began showing up in regulatory codes. Cleaner ethylene means less benzene, less acetylene, and less greenhouse gas per ton. We tackle leaks relentlessly, running annual LDAR surveys with sniffer teams and infrared cameras. We push for flange upgrades, vapor recovery units, and improved compressor seals. Some solutions cost more, but each step builds long-term reliability and maintains public trust in our operations.

    Supporting Customer Innovation

    Research teams at our customers’ sites regularly approach us about new catalysts, reactor designs, or add-on units to existing polymer plants. Through decades of working jointly with these teams, we’ve learned to share more than spec sheets: we provide technical data on trace components, supply protocols for sampling and testing, and even coordinate timing for plant startups when new projects come online. We routinely supply ethylene with custom moisture or sulfur content targets, knowing that some catalyst systems react unpredictably.

    We keep up with pilot and demo size projects across the industries we serve. Feedstocks can change from natural gas liquids to bio-based alcohols, or mix in recycled hydrocarbon streams. Each shift demands attention on gas composition, reaction speeds, and final product contamination risks. We partner with R&D teams to run side-by-side batches until every metric aligns, sending our technicians on-site to monitor purity and assisting in troubleshooting equipment. Knowledge flows both ways—customers’ insights often lead to process tweaks in our own plants.

    We also back initiatives for safer and more efficient ethylene handling, especially in novel applications. Electric heating for crackers or alternative integration like small-scale modular units gains traction, and as manufacturers we track the energy usage and operational windows closely. Newer approaches demand flexibility, and our on-the-ground experience frequently gets called into design meetings to test ideas that look good in simulation but need hard proof under plant conditions.

    Supply Reliability and Risk Management

    Secure supply of ethylene depends on more than just onsite production. We plan logistics for every mode, whether shipping via pipeline, rail, marine tanker, or truck. Each has unique risks. Pipelines supply bulk, but one downstream valve malfunction or weather event can cascade into significant supply gaps. Trains add flexibility but face scheduling complications, unforeseen delays, and local regulation changes. With each shipment, we balance load, distance, and permissible exposure limits for drivers and plant operators.

    Quality assurance ties into risk management. Each shipment receives multiple points of inspection, starting with purity analysis run at line takeoff, continuing with transfer to shipping vessels, and wrapping up with batch samples provided for customer review. Traceability remains top priority, especially with high-value or high-stakes applications such as medical devices or food contact material.

    Market swings—whether from energy price jumps or sudden downstream plant shutdowns—demand real-time adjustments. Our planners and forecasters stay in close touch with customers to keep inventory levels healthy and avoid costly over- or under-supply. Transparent communications form the cornerstone of our relationships. Emergency arrangements, backup stock locations, and surge supply plans can make or break a season for major buyers, especially if they operate on just-in-time models or have little room for error.

    Environmental Commitment and Next Generation Ethylene

    Industry voices increasingly call for reduction of carbon footprints in all operations. Years back, our teams began piloting carbon capture and heat recovery at the cracker furnaces. Waste heat goes into preheating streams or powering ancillary systems, turning what used to be stack gas and hot air into true value. Water recycling and optimized boiler operation further slash energy use. Investment in flare gas minimization not only reduces emissions but corrects inefficiencies before they grow into shutdown risks or reputational hits.

    Bio-based and circular ethylene sources move beyond theory in our plants. We’ve run successful test campaigns feeding bioethanol through dehydration units, generating renewable product indistinguishable from fossil-based material. It’s not perfect—bio-feedstocks bring new impurities and logistics headaches—but the technology shows real promise in regions with robust agricultural output and government support. We work alongside policy makers and logistics providers to build scalable supply chains that don’t compromise food systems.

    For recycling, depolymerization and pyrolysis efforts return end-of-life polyethylene products back to monomers, where ethylene comes out as a downstream fraction. These methods let consumer waste re-enter the chemical lifecycle, closing the loop in a way that doesn’t just depend on mechanical recycling. Technical pains remain: removing stabilizers, pigments, or other residues before processing takes lab-grade care and sophisticated equipment. Our researchers continue to build out best practices and experiment with catalysts for greater efficiency.

    Looking Ahead – Ethylene’s Future Role

    Years of work as chemical manufacturers convince us that ethylene’s role in industry will only deepen as demands change. Next-generation materials with higher strength-to-weight ratios and improved recyclability all hinge on reliable, high-purity feedstocks. Battery casings, lightweight automotive frames, advanced medical devices, and food-safe films each required subtle modifications to base polymers—a feat only possible with consistent, dependable ethylene supply.

    Digitalization shapes plant reliability and product traceability. Our adoption of plant-wide process analytics, remote valve and pump monitoring, and data-driven maintenance prevents unnecessary breakdowns and supports continuous quality improvement. By tracking every batch from cracker to customer, we eliminate uncertainties and ensure product delivered matches every expectation.

    We intend to keep investing, pushing engineering, and driving emissions down while supporting our workforce. Our job as ethylene manufacturers keeps evolving, but the heart of the job remains the same—supply a product that stays stable under pressure, meets diverse needs, and supports the ways the world changes. We build relationships batch by batch, learning from every challenge and opportunity our customers and our own employees present.