Naphtha

    • Product Name: Naphtha
    • Chemical Name (IUPAC): No unique IUPAC name (Naphtha is a mixture of hydrocarbons)
    • CAS No.: 64742-48-9
    • Chemical Formula: C₅H₁₂–C₁₀H₂₂
    • Form/Physical State: Liquid
    • Factroy Site: Jinshan District, Shanghai, China
    • Price Inquiry: sales4@ascent-chem.com
    • Manufacturer: Sinopec Shanghai Petrochemical Co., Ltd.
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    Specifications

    HS Code

    109225

    Chemical Formula C5–C12 (mixture of hydrocarbons)
    Appearance Clear, colorless to pale yellow liquid
    Odor Petroleum-like
    Boiling Point Range Celsius 30–200
    Density G Per Cm3 0.65–0.75
    Flash Point Celsius < -20
    Autoignition Temperature Celsius 215–270
    Solubility In Water Insoluble
    Vapor Pressure Kpa 20c 2–8
    Viscosity Cp 20c 0.4–0.7
    Molar Mass G Per Mol Approx. 70–120
    Flammability Highly flammable
    Main Components Paraffins, naphthenes, aromatics
    Refractive Index Nd 20 1.400–1.420
    Use Petrochemical feedstock, solvent, fuel blending

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

    Packing & Storage
    Packing Naphtha is typically packaged in sturdy, tightly sealed 200-liter (55-gallon) steel drums, clearly labeled with hazard and handling warnings.
    Container Loading (20′ FCL) Container Loading (20′ FCL) for naphtha involves securing liquid cargo in ISO tanks or drums, ensuring safe, compliant transport.
    Shipping Naphtha is typically shipped as a bulk liquid in tankers or specialized chemical containers. Classified as a flammable and hazardous material, it requires strict compliance with international shipping regulations, using properly labeled, leak-proof containers. Transportation must avoid ignition sources and ensure proper ventilation to prevent vapor buildup and potential fire or explosion risks.
    Storage Naphtha should be stored in tightly closed, properly labeled containers made of compatible materials, away from heat, flames, and oxidizing agents. Storage should be in a well-ventilated, cool, and dry area, with suitable fire suppression systems in place due to its flammability. Earth and bond containers during transfer to prevent static electricity buildup. Ensure appropriate spill containment measures are available.
    Shelf Life Naphtha typically has a shelf life of 1–2 years when stored in tightly sealed containers, away from heat, moisture, and direct sunlight.
    Application of Naphtha

    Applications of Naphtha in Industrial Manufacturing

    Naphtha is a fundamental petrochemical feedstock used in multiple core industries. As a direct manufacturer, we supply naphtha meeting strict downstream requirements, supporting value-adding conversion processes. Below are key application scenarios where naphtha integrates into high-volume production cycles, each governed by distinct technical and regulatory criteria.

    1. Steam Cracking for Olefins Production

    Steam cracking represents the most prominent application for naphtha in the petrochemical sector. Large-scale processors inject naphtha as a primary hydrocarbon source in steam crackers, targeting high ethylene and propylene yields for downstream plastics and resins. The operation must balance feedstock characteristics such as paraffin, naphthene, and aromatic content to optimize both throughput and product slate, under closely regulated emissions and efficiency standards.

    Industry compliance standards

    • API 941
    • REACH Regulation (EC No 1907/2006)
    • EU Industrial Emissions Directive (2010/75/EU)
    • U.S. EPA Clean Air Act MACT Standards

    Typical usage ratio

    • Feedstock constitutes 100% of the hydrocarbon input for steam crackers, with adjustments in feed blending (light, heavy, full-range naphtha) based on desired olefin-to-aromatic product ratios.

    Downstream process integration

    • Operators pre-heat the feed and vaporize naphtha prior to mixing with steam. The feed passes through cracking furnaces at 800–850°C, initiating pyrolysis. Rapid quenching halts reactions, after which gas-liquid separation and fractionation isolate ethylene, propylene, and C4+ fractions.

    Final product types

    • Polyethylene (HDPE, LDPE, LLDPE)
    • Polypropylene (PP)
    • Ethylene oxide, ethylene glycol
    • Propylene oxide, acrylonitrile

    2. Aromatics Extraction for BTX (Benzene, Toluene, Xylene) Production

    Refiners and chemical plants use naphtha as a feedstock for catalytic reforming to generate high-value aromatics. The process subjects naphtha to dehydrogenation and isomerization reactions over platinum-based catalysts, forming reformate rich in benzene, toluene, and xylenes. Operators optimize crude cut points and hydrogen-to-hydrocarbon ratios to meet aromatic concentration targets, while satisfying environment and worker exposure limits due to volatile organic compounds (VOCs).

    Industry compliance standards

    • EN 228 (Aromatics content in fuels regulations, Europe)
    • U.S. EPA 40 CFR Part 79 (Fuels and Fuel Additives)
    • OECD SIDS (concerned with benzene and toluene handling)
    • ISO 22854 (Petroleum product methods for BTX analysis)

    Typical usage ratio

    • Naphtha forms 100% of the reformer feedstock. Specific cut (e.g., heavy naphtha, 95–180°C boiling range) selected to maximize BTX yield based on refinery configuration.

    Downstream process integration

    • Operators send naphtha to a hydrogenation unit for feed pretreatment, removing sulfur and nitrogen. The hydrotreated naphtha then enters the catalytic reforming reactors. Product streams undergo solvent extraction and distillation to recover individual benzene, toluene, and xylene components.

    Final product types

    • Purified benzene (for styrene, phenol, cyclohexane)
    • Toluene (for TDI, solvents, explosives)
    • Para-xylene (for PTA, polyester fibers)
    • Ortho/Meta-xylene (for phthalic anhydride, solvents)

    3. Gasoline Blending in Fuel Refineries

    Fuel-grade naphtha constitutes a major blending component in finished motor gasoline. Refiners use straight-run, cracked, and reformate naphtha types at varying cut points to adjust octane rating, vapor pressure, and volatility parameters according to market and climate requirements. Strict regulatory limits on benzene content and sulfur levels require continuous quality control in blending operations and finished product certification.

    Industry compliance standards

    • ASTM D4814 (U.S. Standard Specification for Automotive Spark-Ignition Engine Fuel)
    • EN 228 (European Automotive Gasoline)
    • China GB 17930-2016 (Petrol for Motor Vehicles)
    • Euro 5/6 Emission Standards

    Typical usage ratio

    • Naphtha constitutes 20–60% of the gasoline pool, varying with crude source, refinery configuration, season, and required properties such as RON/MON grades.

    Downstream process integration

    • Blending occurs in tank farms or inline blending systems after fractionation and post-treatment (hydrodesulfurization, dearomatization). Quality control units continuously sample blends to ensure regulatory compliance prior to terminal distribution.

    Final product types

    • Pump-grade unleaded gasoline
    • Oxygenated gasoline (with MTBE, ethanol blending)
    • Reformulated gasoline for low-emission zones

    4. Solvent Manufacturing for Industrial Formulations

    Specialized grades of naphtha serve as hydrocarbons solvents across the coatings, adhesives, and cleaning industries. Manufacturers require tight control of boiling range, aromatic content, and sulfur level to ensure compatibility with end formulations and safety requirements. Naphtha enters solvent distillation, fractionation, and hydro-treatment processes to deliver consistent, specification-compliant performance for adhesives, inks, degreasers, and specialty paints.

    Industry compliance standards

    • EU CLP Regulation (EC No 1272/2008) on Chemical Classification
    • U.S. OSHA 29 CFR 1910.1200 (Hazard Communication Standard)
    • REACH regulation, Annex XVII restrictions on aromatic and naphthenic hydrocarbons
    • ISO 1523 (Paints and varnishes – determination of flash point for solvents)

    Typical usage ratio

    • As final solvent: 30–100% in cleaning fluids, 10–70% as a volatile diluent in adhesives, paints, and printing inks, depending on volatility, film formation, and desired evaporation profile.

    Downstream process integration

    • Naphtha undergoes distillation to yield narrow-cut grades (light, medium, heavy). Some fractions are hydrotreated to ultra-low sulfur content. End users blend these grades with resins, pigment dispersions, and additives in high-shear mixers before canning or packaging.

    Final product types

    • Lacquer thinners and industrial degreasers
    • Contact adhesives (solvent-borne formulations)
    • Graphic inks (flexographic, gravure)
    • Wood and metal coating solvents

    5. Synthesis of Cyclohexane for Nylon Intermediates

    Chemical producers convert specific naphtha fractions into cyclohexane, a critical precursor for caprolactam and hexamethylene diamine, both essential for nylon-6 and nylon-66 polymerization. The process leverages catalytic hydrogenation of pure benzene, itself obtained from naphtha-derived aromatics, requiring high-purity, low-sulfur feedstock to prevent catalyst poisoning and ensure polymer-grade quality under compliance with safety and food-contact regulations for engineering plastics.

    Industry compliance standards

    • ISO 9001:2015 (Quality Management for chemical intermediates)
    • China GB/T 19254-2017 (Industrial cyclohexane standard)
    • U.S. FDA 21 CFR 177.1500 (Nylon resins in food contact)
    • REACH registration for cyclohexane and derivatives

    Typical usage ratio

    • Benzene (naphtha-derived) forms about 99% of hydrogenation reactor feed; any remaining naphtha fractions are minimized to limit side reactions. Process yield depends on benzene purity and hydrogen availability.

    Downstream process integration

    • Producers first extract benzene through reformate distillation and solvent extraction, then direct it to fixed-bed hydrogenation reactors with nickel or platinum catalysts. Cyclohexane undergoes water and light hydrocarbon removal, then serves as a direct raw material for caprolactam synthesis by oxidation and ammoximation routes.

    Final product types

    • Cyclohexane for caprolactam and nylon-6
    • Cyclohexanone for nylon-66 intermediates
    • Nylon engineering plastics and fiber granules
    • Transparent nylon copolymers for packaging films

    6. Synthesis Gas (Syngas) Generation for Ammonia and Methanol Plants

    Several integrated chemical facilities use naphtha as a carbon and hydrogen source for reforming units that generate synthesis gas. Operators choose naphtha as a feedstock where natural gas supplies fluctuate or as a spot solution for syngas production in ammonia and methanol chains. The process demands rigorous feed pretreatment and steam reforming under high pressure and temperature, plus strict monitoring of impurity carryover to avoid downstream catalyst fouling.

    Industry compliance standards

    • ASME Boiler & Pressure Vessel Code (for reformers)
    • API 560 (Fired Heaters for General Refinery Service)
    • ISO 9001/14001 (QMS/EMS for fertilizer and methanol plants)
    • CF Industries Ammonia Industry Best Practices

    Typical usage ratio

    • Naphtha forms 100% of hydrocarbon input for the primary reformer in naphtha-based units. Consumption depends on targeted H2/CO ratio and plant throughput; typically, 0.65–1.0 tons naphtha per ton ammonia or methanol output, with adjustments for feed composition and desired syngas purity.

    Downstream process integration

    • Operators send naphtha through desulfurization (hydrotreating) before vaporizing and mixing with superheated steam. The mixture enters primary and secondary reformers, generating H2/CO/CO2/CH4 syngas for further shift conversion. Purified synthesis gas supplies ammonia synthesis loops (Haber-Bosch) or methanol reactors.

    Final product types

    • Prilled and granulated ammonia fertilizer
    • Liquid anhydrous ammonia for industrial use
    • Industrial methanol (solvents, fuel, formaldehyde)
    • Urea and complex NPK fertilizers

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    Certification & Compliance
    More Introduction

    Naphtha: Crafting Versatility in Petrochemicals

    At our production facility, we handle a broad range of hydrocarbons. Among the most versatile in our lineup is Naphtha, a product that serves as a cornerstone for many downstream industries. As a manufacturer with decades of hands-on experience, we see naphtha as not just a commodity, but as a material with practical advantages, persistent demand, and a direct connection to daily life around the world. Let’s look closely at what defines naphtha, how our process shapes its qualities, and why end-users select specific grades for precise applications.

    Understanding Naphtha: What Sets It Apart

    Naphtha refers to a family of flammable liquid hydrocarbon mixtures produced through the distillation of crude oil or the cracking of heavier petroleum fractions. It covers a range of boiling points and chemical compositions, which can span light to heavy grades. The unique property of naphtha lies in its bridging role between lighter products like LPG and heavier fuels or feedstocks. Every day, plant engineers and technologists rely on its chemical simplicity, ease of handling, and reactivity to fuel countless chemical processes.

    From the perspective of a direct producer, we know that feedstock selection and operating conditions have a huge influence on the final properties. Lighter grades tend to contain more paraffinic and naphthenic hydrocarbons, with a lower final boiling point. Heavy naphtha steers closer to kerosene, holding larger hydrocarbon chains, and suits other process requirements. The measured approach to distillation and fractionation ensures separation at consistent temperatures, and that impacts everything downstream—from octane numbers to sulfur content.

    Our Experience in Delivering Naphtha Grades

    We manufacture naphtha in grades tailored for different sectors—these are not arbitrary labels, but decisions born out of years of technical analysis and customer dialogue. Our light naphtha, with a typical boiling range from about 30°C up to 90°C, enters the streams of petrochemical crackers as a preferred feedstock. Its lighter molecules break efficiently into ethylene and propylene without excessive formation of heavy byproducts or coke, an essential factor for operators seeking reliability in high-throughput plants.

    Heavy naphtha, ranging from about 90°C to 200°C, is another story. Refiners value it for its potential after hydro-treating or reforming. Here, the challenge is two-fold. First, meeting the strict sulfur and aromatics content standards set by regulators and fuel blenders. Second, ensuring the end product achieves the right octane number after catalytic reforming, which is a balancing act between yield, hydrogen consumption, and catalyst life. Through years of close collaboration with both domestic and overseas refiners, we’ve refined our processes to provide naphtha streams that reduce operational headaches downstream—improving reformer throughput and making it easier to hit tight product specs.

    Practical Specifications That Matter

    The industry likes to talk in broad categories—light, heavy, full range—but as manufacturers, we know the devil lies in the details. For most commercial buyers, the specifications of interest revolve around sulfur content, aromatic composition, vapor pressure, and boiling range. There is seldom room for error. Pipelines, blending tanks, and cracker feed lines are engineered with narrow tolerances. Over the years, we’ve seen what happens when a truckload deviates from spec: fouled catalysts, delayed offloading, operational surprises. All these setbacks cost money and erode trust.

    To control sulfur, we rely on hydrotreating processes, constantly adjusting furnaces and catalyst beds based on routine chromatography results. Sulfur keeps getting tighter targets; in much of Asia and Europe, regulatory limits have dropped below 10 ppm, so our facilities invest in advanced sulfur-reducing catalysts and improved reactor flow dynamics. On the volatility side, our technicians monitor vapor pressure and boiling range at every shift. Anything outside of set parameters goes back to re-distillation or blending tanks. We don’t just meet a number—we make sure it survives the journey from tank to end-use.

    Occasionally, customers ask whether small variations in aromatics matter. Drawing on years of plant operations, we know—beyond the standardized test values—aromatics in naphtha strongly influence yield in petrochemical crackers and affect reformer performance in gasoline blending. High aromatic content boosts octane, but can hurt stability and raise environmental concerns. This balancing act shapes our approach to fractionation, and unlike blanket blends available through trading houses, our naphtha streams are checked at each batch to hit predictable targets. That’s the level of consistency top-tier chemical companies expect. We see fewer off-spec returns thanks to these controls.

    Real Uses and Customer Requirements

    Naphtha runs through more industries and processes than most realize. At the top of demand, steam crackers use it to produce ethylene, propylene, and other critical building blocks for plastics and chemicals. Our light naphtha finds a ready home here, because its composition supports high olefin yields with manageable levels of coke and tar—the nemesis of long campaign runs. The economics are clear: the right naphtha minimizes adverse byproducts, extends catalyst cycles, reduces shutdown costs, and provides a predictable base for financial planning.

    Another significant share moves into gasoline blending, especially in regions with large vehicle fleets. Heavy naphtha, hydrotreated and reformed, raises the octane level of gasoline while meeting sulfur and benzene restrictions. Our product ends up on forecourts around the world, thanks to these fuel-blending operations. In this sector, refiners are increasingly under pressure to produce cleaner, high-performance fuels without relying on lead or other harmful additives. As a result, demand for tightly specified heavy and full-range naphtha is only increasing.

    Not all naphtha ends up in large petrochemical plants or blending tanks. Manufacturers of solvents, adhesives, and cleaning agents often rely on specialized grades with lower aromatic content and tailored volatility. We have partnered with smaller formulators, sharing test data and adjusting cuts so they don’t need to worry about regulatory compliance or sudden performance changes in their products. In these collaborations, flexibility, technical transparency, and long-term relationships often matter more than market price swings.

    Comparisons with Other Hydrocarbon Products

    For customers, the question often arises—why choose naphtha over alternatives like LPG, kerosene, or straight-run gasoline? We’ve run projects alongside clients evaluating all these options. LPG features cleaner combustion but brings lower yields of key olefins in crackers. The supply chain for LPG also tends to have more volatility in both volume and price, creating bottlenecks in process planning.

    Kerosene sits higher on the distillation ladder, with heavier molecules and different combustion and blending properties. While kerosene-based solvents or jet fuel find their own markets, the chemical reactivity of naphtha’s hydrocarbon blend makes it the more attractive choice for polymer feedstocks and fuel enhancement. Straight-run gasoline sees usage in fuel blending, but it doesn’t meet the fine-tuned requirements of modern steam crackers or specialty chemical synthesis, so naphtha becomes the go-to for plant operators demanding flexibility and performance.

    The detailed boiling point distribution of naphtha supports multiple end-uses; LPG’s lightness doesn’t offer the same carbon backbone diversity for polymer producers. On the other side, heavier products present operational and environmental complications—not nearly as suitable for conversion into clean fuels or lightweight polymers. Years spent in refineries and chemical plants have shown us that each hydrocarbon finds its niche, but naphtha’s adaptability solves the widest range of process challenges.

    Why Consistency and Transparency Matter

    Every step between tank farm and process unit can introduce variation or risk. In our experience, plant engineers and technical buyers consistently value reliable supply and full disclosure of product details. Being a producer gives us a unique vantage point. We see how slight shifts in crude source or distillation temperature lead to changes in vapor pressure or sulfur levels. Transparency with our partners means sharing real data—from lab chromatography to real-world burner tests—so process engineers never get blindsided by unseen contaminants or out-of-range properties.

    Years back, global volatility in oil supply sometimes led us to adjust feedstock blends mid-month. Production teams learned quickly: every shift in crude quality produces a domino effect down the naphtha stream. Without immediate feedback and regulatory-grade quality tracking, the risk of shipping off-spec material rises. So, we invested in advanced process controls and a dedicated team of chemists who run frequent sampling, not just for compliance but to equip customers with predictable, actionable information. It’s this loop of feedback, adjustment, and open communication that sets a manufacturer’s naphtha apart from blended, sometimes poorly characterized material in the open market.

    Meeting Evolving Industry Demands

    Industry keeps marching toward tighter specifications and greater scrutiny, both from regulators and end-users. As producers, we face escalating requirements for low-sulfur fuel components and stricter aromatic hydrocarbon controls. Building out desulfurization capacity, implementing real-time monitoring for aromatics and olefins, and expanding our technical support team costs money and effort—but experience shows this investment pays off in trusted business partnerships and avoidance of downstream process disruptions.

    Petrochemical complexes demand higher ethylene and propylene yield, which means our production continuously optimizes cut points, monitoring not just the bulk composition but the trace impurities that can deactivate catalysts or poison reforming beds. Plants running on naphtha feedstock need to avoid operational upsets caused by hidden nitrogen, oxygenated organics, or excess moisture, all of which are tracked and reported with each batch. The margin for surprise narrows year after year. We see European and Asian buyers leading tougher standards for environmental contaminants; our plant labs invest in cutting-edge techniques to give clear assurances and build long-term trust.

    Opportunities for Improvement: Responding to Challenges in Production and Use

    Volumes fluctuate with both seasonal and macroeconomic trends. Demand for naphtha can swing when cracker margins shift or fossil fuel policies change. A manufacturer quickly learns that production flexibility—flexibility in storage, blending, and cut-point control—becomes a competitive edge. Our operations teams battle logistical issues, ranging from pipeline scheduling to tank maintenance and even weather disruptions. When heavy rains hit, for example, moisture control becomes critical to maintain quality right up to the moment of transfer. Our strategy rests on capacity to adjust volumes and maintain optimum inventory, so our customers never run short or receive outdated product.

    Downstream, as global attention on sustainability grows, naphtha’s environmental footprint is in the spotlight. Producers are upgrading feedstock pre-treatment and considering integration with bio-based streams for renewably sourced naphtha. While not yet a full solution, these efforts point to a future where low-carbon guidelines reshape what we produce. Our plant invests in waste treatment, off-gas recovery, and energy use optimization, always balancing cost with the growing expectation for cleaner chemical building blocks.

    Besides environmental trends, safety always carries top priority. Handling flammable hydrocarbons at scale demands consistent training, continual equipment maintenance, and a culture where every employee feels responsibility for the process. Incidents are rare, but one lapse can undo years of investment in safety and community confidence. As in most plants, we constantly reinforce procedure adherence and upgrade control systems with improved detection and response. The goal is simple: safe, predictable operations that keep our people and community secure.

    Listening to Partners, Building Real Value

    True value for buyers comes not from specs on paper, but from knowing their needs are understood and met with tangible results. Over the years, we’ve learned the difference a steady supply and flexible delivery can make. Some partners call with urgent requests for higher purity during peak demand; others need technical advice on process changes or face downtimes that require off-cycle deliveries. As producers, we answer those calls—not with off-the-shelf responses, but with direct input and hands-on solutions from people who understand the process inside and out.

    We have joined customer teams on-site to troubleshoot startup issues, identify sources of batch variability, and support plant commissioning. Collaborative projects with universities and institutes help us stay ahead of industry trends, so our product development aligns with both current best practices and future regulations. Regular feedback loops from users—be it in plastics, fuels, or specialized solvents—shape our approaches to blending and process optimization.

    Shaping the Future of Naphtha in a Changing World

    Manufacturers of naphtha operate in a sector that evolves in response to regulation, market shifts, and technology advancement. As a material, naphtha keeps showing up where adaptability, consistent quality, and broad chemical utility are needed most. Our responsibility is to keep pace—by upgrading refinery configurations, listening to the voices from the field, and never losing sight of the fundamentals: reliability, communication, and steady investment in both people and technology. Where new markets open, such as renewable naphtha or stricter fuel blending mandates, we see not only challenges but also opportunities to apply expertise gained by decades in the field. By working openly with customers and innovating on both process and safety, we support industries as they build the next generation of essential products that often trace their origins back to the unassuming but indispensable naphtha molecule.