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Crude Benzene

    • Product Name Crude Benzene
    • Alias CB
    • Einecs 270-662-4
    • 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

    993643

    name Crude Benzene
    chemical_formula C6H6 (impure)
    appearance Colorless to light yellow liquid
    odor Aromatic, sweet odor
    boiling_point 80°C - 100°C (varies due to impurities)
    density 0.85 - 0.89 g/cm³
    solubility_in_water Insoluble
    flammability Highly flammable
    main_impurities Toluene, xylene, thiophene, naphthalene
    extraction_source By-product of coke oven gas during coal carbonization
    typical_benzene_content 70% - 80%
    uses Raw material for pure benzene production
    CAS_number 8030-70-4
    flash_point -11°C
    vapor_pressure Numerous due to mixture, typically 95 mmHg at 25°C

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

    Packing & Storage
    Packing Crude Benzene is packaged in 200-liter steel drums, clearly labeled with hazard warnings, product name, and handling instructions.
    Shipping Crude Benzene should be shipped in tightly sealed, corrosion-resistant containers, such as steel drums or tank trucks, compliant with international hazardous materials regulations (UN 1114). Transport must ensure proper labeling for flammability and toxicity, minimizing exposure to heat, sparks, and ignition sources, with appropriate safety documentation and emergency response provisions.
    Storage Crude Benzene should be stored in tightly closed, labeled steel drums or tanks in a well-ventilated, cool, and dry area, away from direct sunlight and sources of ignition. The storage area should be equipped with spill containment and grounded to prevent static discharge, as crude benzene is highly flammable and volatile. Adequate fire protection measures and safety signage must be in place.
    Application of Crude Benzene

    Applications of Crude Benzene in Industrial Manufacturing

    As a primary aromatic hydrocarbon, crude benzene plays a vital role in the industrial value chain as a raw material for the synthesis of multiple high-demand chemical intermediates. Leveraging our in-depth production expertise, we supply industries with a consistent crude benzene feedstock tailored to real factory applications, supporting processes that require stringent compliance and reliable supply traceability.

    1. Aniline Production for Dye and Pigment Manufacturing

    Chemical processors employ crude benzene as an essential feedstock for aniline synthesis, which is further utilized in the formulation of dyes and organic pigments. The transformation involves catalytic hydrogenation processes where purity, trace impurity management, and supply stability directly impact downstream colorant performance and compliance with safety and environmental protocols. Our product is supplied to aniline plants with a strict focus on integration within heavy chemical frameworks, supporting advanced coloration applications in textiles, printing inks, and plastics.

    Industry compliance standards

    • ISO 9001:2015 Quality Management Systems
    • OEKO-TEX® Standard 100 for textile chemicals
    • REACH (EC) No 1907/2006 substance registration and authorization
    • GHS/CLP Regulation (EC) No 1272/2008 for classification and labeling

    Typical usage ratio

    • Crude benzene content typically feeds aniline reactors at 70-75% by weight per batch, with ratios adjusted based on crude benzene purity and required aniline yield after pre-distillation steps.

    Downstream process integration

    • Integrated during the initial sulfonation and nitration sequence prior to amination, entering via bulk storage tanks connected to continuous nitration reactors.

    Final product types

    • Azo dyes for cellulose and synthetic fibers
    • Phthalocyanine pigments
    • Ultramarine blue colorants for plastics
    • Intermediates for polyurethane pigments

    2. Cyclohexanone Synthesis for Nylon Precursor Manufacturers

    Nylon and engineering polymer producers require cyclohexanone as a key precursor, primarily sourced by the catalytic hydrogenation and oxidation of benzene. In these facilities, the supply chain control of aromatic raw materials such as crude benzene is essential to meet end-user quality requirements and to maintain batch integrity across continuous production lines. We address this by ensuring impurity consistency and supporting documentation for direct incorporation into nylon-6 and nylon-66 manufacturing.

    Industry compliance standards

    • ISO 14001:2015 Environmental Management Standards
    • EN 71-3:2019 for toy safety (where nylon is used)
    • FDA 21 CFR 177.1500 for polyamide resins in food contact
    • TÜV Rheinland polymer certification

    Typical usage ratio

    • Benzene charge to cyclohexanone reactors runs at 85-90% of total aromatics feed by mass, tuned according to oxidation reactor yield performance and hydrogen consumption rates.

    Downstream process integration

    • Added at the raw material charging phase to the hydrogenation oxidation section, preceding extraction and distillation towers for cyclohexanone purification.

    Final product types

    • Nylon-6 and nylon-66 engineering plastics
    • Polyamide fibers for technical textiles
    • Caprolactam for further polymerization
    • Nylon-based molding resins

    3. Cumene Manufacturing for Phenol and Acetone Producers

    Benzene serves as a core raw material in the production of cumene, a precursor for both phenol and acetone applied broadly in resin manufacture, pharmaceutical synthesis, and solvent facilities. Downstream manufacturers depend on stringent benzene composition tolerances during alkylation with propylene, since any contaminant in crude-grade feed can propagate and impede selectivity or catalyst life in multi-stage reactors. We ensure traceability of every crude benzene lot to facilitate incident reporting and regulatory audits at high-volume chemical parks.

    Industry compliance standards

    • U.S. EPA 40 CFR Part 60 VOC emission controls
    • OSHA 29 CFR 1910.1000 Permissible Exposure Limits for benzene
    • EU REACH Annex XVII limitations for aromatic hydrocarbons
    • ISO 9001:2015 for process uniformity

    Typical usage ratio

    • Generally dosed at 45–55% of total feed in cumene alkylation, with the ratio governed by reactor throughput, propylene/benzene molar ratio, and in-line crude benzene assay.

    Downstream process integration

    • Pumped directly into the fixed-bed alkylation reactors after in-plant benzene distillation and purification, prior to cumene dehydrogenation and phenol splitting processes.

    Final product types

    • Industrial phenol for resin and adhesive production
    • Acetone for pharmaceutical and solvent applications
    • Bisphenol A for polycarbonate plastics
    • Alkylphenols for oil additives and detergents

    4. LAB (Linear Alkylbenzene) Production for Surfactant and Detergent Manufacturers

    Detergent and surfactant factories utilize benzene for alkylation with long-chain olefins to synthesize linear alkylbenzene, an essential feed for linear alkylbenzene sulfonate (LAS) detergents. The quality of crude benzene feed impacts both sulfonation stability and the environmental compliance of resulting laundry formulations. For multinational homecare brands, we provide documentation suited for consumer safety audits, and support batch traceability for production of branded cleaning agents.

    Industry compliance standards

    • Ecolabel (EU Flower) for detergents
    • Detergents Regulation (EC) No 648/2004
    • ISO 14040:2006 Life Cycle Assessment for surfactant production
    • REACH registration dossier for linear alkylbenzene

    Typical usage ratio

    • Accounts for 35–45% w/w of the combined aromatics and olefin reactant charge, with adjustment for process yield and in-plant benzene fractionation levels to optimize LAB chain length distribution.

    Downstream process integration

    • Fed to the alkylation train post-crude fractionation via benzene recovery units, and introduced together with C10–C14 olefins into acid-catalyzed reactors prior to LAS production by sulfonation.

    Final product types

    • Linear alkylbenzene sulfonate (LAS) powders and liquids
    • Household and industrial laundry detergents
    • Industrial cleaners and degreasers
    • Personal care surfactant blends

    5. Nitrobenzene Synthesis for Agricultural Chemicals

    Manufacturers of pesticides and agro-intermediates rely on nitrobenzene formed from benzene nitration, which serves as the primary precursor for production of compounds such as carbamate and phenylurea herbicides. Protecting against nitrosamine by-products and meeting agricultural chemical purity standards demand tightly controlled feedstock supply. We support these batch plants with specification-specific crude benzene lots monitored for residual sulfur and light aromatics, aligned with industry stewardship programs.

    Industry compliance standards

    • FAO/WHO International Code of Conduct on Pesticide Management
    • ISO 17025 Laboratory Testing Accreditation (residue monitoring)
    • China GB 2763 Maximum Residue Limits for pesticides
    • EU Regulation (EC) No 1107/2009 authorization of plant protection products

    Typical usage ratio

    • Nitration reactors require benzene at 80-85% by mass of total organic component charge in single-stage or staged production, with adjustment per operational sulfur content and nitrobenzene conversion targets.

    Downstream process integration

    • Input to mixed acid nitration cascades, with benzene supplied from local storage under nitrogen blanketing and heated prior to staged nitration and neutralization.

    Final product types

    • Nitrobenzene for agricultural intermediate synthesis
    • Phenylcarbamate herbicides (e.g., fenobucarb)
    • Aniline-based fungicide precursors
    • Soil treatment chemicals containing nitroaromatic active ingredients

    6. Benzene-Derived Pharmaceutical Intermediate Production

    Selected pharmaceutical facilities use purified benzene to synthesize key intermediates such as chlorobenzene and benzoic acid, serving as building blocks for analgesics, anti-inflammatories, and antibiotics. Quality management within pharmaceutical ingredient synthesis requires consistent analytical documentation from crude benzene batches, supporting validated GMP compliance and trace impurity control essential for regulated market submissions. Our operations provide traceable shipment records designed to integrate with pharmaceutical QMS and batch reporting systems.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • USP/NF (United States Pharmacopeia/National Formulary) references for starting materials
    • WHO GMP for pharmaceutical ingredients
    • EDQM CEP (Certificate of Suitability) for supply chain traceability

    Typical usage ratio

    • Benzene is allotted at 60–70% of total organic input in halogenation or oxidation processes, with refiner control according to pharmaceutical-grade purity demands and intermediate batch size, as validated by in-process analytics.

    Downstream process integration

    • Integrated at the feed inlet to synthesis reactors during chlorination, sulfonation, or controlled oxidation, with delivery justified by Certificate of Analysis (CoA) and process suitability reports.

    Final product types

    • Chlorobenzene and nitrobenzene for pharmaceutical synthesis
    • Benzoic acid for oral and topical medicines
    • Paracetamol (acetaminophen) intermediates
    • Sulfanilamide antibiotic precursors
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    Certification & Compliance
    More Introduction

    Crude Benzene: A Reflection from the Plant Floor

    What Drives Us to Make Crude Benzene

    Every shift, our team walks along the process lines, listening to the steady hum of compressors and watching pressure gauges as the distillation towers work through another batch. Crude benzene stands among the building blocks of industrial chemistry. As a chemical manufacturer, we watch the flow start with coal tar or certain petroleum streams—materials with a heavy legacy in basic industries. The same crude benzene that leaves our tanks today helps drive essential markets, from phenol units to rubber plants and even pharmaceutical intermediates. Years of careful process control and experience have taught us that real-world consistency matters more than lab theory. The real mark of our crude benzene comes from how smoothly it runs for downstream users.

    The Heart of Our Production Model

    Inside our plant, we operate atmospheric and vacuum distillation columns. Our crude benzene product follows typical trade models such as Fraction Run Benzene, pulled from our benzol lines in consistent, high-volume streams. This product contains benzene as the primary component, with toluene, xylene, and traces of light aromatics riding along depending on the season, the mix of feedstock, and the tuning of our rectifiers. We attach specifications to each shipment based on GC analysis: benzene content usually runs between 70% and 85%, with the remainder mostly toluene, traces of solvent naphtha, and limited sulfur compounds. Water washing, fractionation, and tailored temperature controls help us dial in what our buyers rely on—mainly content purity and stability in supply.

    An Eye for What Sets It Apart

    No two crude benzene streams look identical. Compared to refined benzene, crude grades contain higher percentages of side aromatics and trace organics. This makes it the go-to choice for large-volume chemical syntheses where ultra-high purity takes a back seat to cost or to further on-site processing. In our view, the content of toluene, thiophene, and naphthalene—those trace players—can either be a plus or a minus, depending on what the end user intends. Manufacturers feeding hydrodealkylation units might favor a blend with more toluene, while cyclohexane plants want lower naphthalene. Because we process batches from both coal tar and pyrolysis gasoline feeds, our blend points and operating knowledge mean we can describe exactly where our product stands compared to what one would draw from a straight petrochemical stream.

    If someone asks about differences between crude benzene and refined types, the answer always ties back to intended use. Refined benzene filtration and distillation steps strip out the C6-C8 impurities, chase sulfur numbers down to the low ppm range, and polish color until it meets a water-white clarity. None of this comes for free—refining adds cost, yields drop, and some valuable co-products are lost. We watch many of our customers blend crude benzene into their crude solvent mixes, then extract value by distilling only what is needed, right on their own line. This dynamic saves money and keeps global aromatics markets nimble.

    Where Our Expertise Makes a Difference

    Quality control starts upstream, long before product ever moves to shipment. As the manufacturer, we stand responsible for monitoring each stage, from feed prep to final drum. Our labs run daily GC analyses to profile benzene, toluene, ethylbenzene, and xylene fractions, while regular monitoring of sulfur, water, and acid-washing does more than check a box. These steps mean the crude benzene our customers receive fits their own process needs without costly surprises. Routine tank blending and trace-component testing spot seasonal drift in feedstock properties, letting us correct before it reaches the customer’s reactor.

    Down the years, we’ve seen that regular feedback loops make the biggest difference. Customers used to call us to report excessive tar, build-up, or water carryover—things that show up only after the product hits hot operating conditions. We learned to run more detailed condensation/precipitation tests, polish our separation towers, and review each shipping batch with new baselines. If one supplier’s crude benzene develops storage haze or unusual odor, we know how to trace the symptom to upstream faults—usually a sign that process slippage or poor drum integrity slipped through quality control. These production-side lessons feed directly into our technical bulletin updates.

    Tough Questions and Practical Answers

    Visitors to our production site sometimes ask why we don’t chase maximum purity every run. The answer comes down to application and cost. Industrial users of crude benzene, especially big-volume rubber and resins producers, gain more value from stable composition than from pharmaceutical-grade product. By working directly with end users, we match batch profiles to fit what’s actually valuable on the plant floor—avoiding over-processing while sticking to critical safety and content thresholds.

    Comparing product to standard alternatives, crude benzene takes its place between unprocessed coal tar fractions and fully refined benzene. Material from a coal tar still contains heavy residuals, soot, and polyaromatic hydrocarbons, driving viscosity and color up to the point of fouling process lines. Straight refined benzene, cleaned through repeated caustic and acid scrubbing, helps users needing feedstock for styrene or high-purity cyclohexanone but isn’t always required when making LAB, adhesives, or plastics resins. We design our process to strike a working balance, focusing on stability in aromatic content over time and controlling for the sulfur offsets that can catalyze unwanted side reactions.

    Transportation and storage create their own demands. Everyone on the shipping team learns the smell of benzene—the sharp, unmistakable note that signals loss containment or leaks. Loading crude benzene for either rail or tank containers, we test for water, monitor vapor recovery, and check drum seals. Benzene’s volatility and its carcinogenic risk mean that personal protective equipment isn’t just a box-ticking exercise. We enforce strict transfer protocols, and our long partnership with logistics companies lets us manage seasonal shifts—minimizing condensation or unexpected tank stratification.

    Why Crude Benzene Remains Essential

    Modern synthetic chemistry rides on the back of basic aromatics. Our crude benzene leaves the plant for key regional buyers making phenol, styrene, aniline, and other intermediates. The main raw material for production can come from multiple routes—coal tar distillation gives a certain aromatic structure, steam cracker pyrolysis gasoline feeds offer another. By working across these multiple modes and refining options, we offer solutions that regular traders or brokers can’t quite promise: long-term sourcing guarantees matched with chemical fingerprinting from our own distillation units.

    From hot repair shops to the fine-tuned environment of pharmaceutical synthesis, crude benzene finds its way through countless manufacturing lines. Those producing linear alkylbenzene detergents often rely on our product because upstream purity allows for downstream customization; tailored distillation and blending enable further upgrades or recovery of valuable by-products. Fuel blending and certain specialty flammable solvents, especially in the metal and paint sectors, use the distinctive solvency provided by a crude benzene blend. Large rubber producers point to the trace toluene and xylene content as useful for keeping elastomer properties within design parameters.

    Realities of Environmental and Safety Responsibility

    No one in our business can ignore health and safety risks of benzene. Every year regulations around benzene tighten, driven by its classification as a known carcinogen and the increasing stringency of handling requirements. The plant has adapted; our loading bays feature full vapor recovery, fixed-gas detection, and training for everyone on the hazards in every shift. Environmental impact runs in parallel: waste minimization and vapor emission recovery technology, combined with strict sample handling, minimize benzene escape to atmosphere.

    Solid control measures trace back through our supply chain. We work with coal and petrochemical refiners willing to prioritize product stewardship, and we enforce closed-loop transfer at every collection point. Leaky tank wagons and open storage pits don’t exist in our operation. On occasion, we’ve fielded criticism from downstream buyers who recall old days of "run what you brung" blending. Over time, practical risk controls, transparent batch testing, and regular third-party audits set the new standard. With strong industry networks and routine engagement with environmental agencies, we stay ahead of new rules—not by racing to compliance when deadlines hit, but by building safer workflows as standard operations.

    Managing benzene in storage demands both engineered controls and experience. Temperature plays a huge role—ambient summer highs push vapor pressure up fast, increasing fugitive loss unless containment is perfect. Every operator on site knows how to check floating roof tanks, catch potential overpressure, and monitor instrument readings for signs of creeping change. By focusing on real, hands-on solutions—double-sealed tanks, verified vent piping, positive pressure vapor return, and routine safety walkdowns—we keep our team and the wider community safe.

    Challenges in a Global Market

    Anyone in chemical manufacturing knows that every batch tells a story. Global demand swings with seasonal patterns—a wintertime push for heating chemicals, a spring ramp-up for resin production, or sudden disruptions from shipping delays and regulatory changes. Every time shipping lanes tighten or trade policy twists, pricing volatility can leave both buyers and suppliers scrambling. Years of direct experience tell us to hedge forward contract positions, invest in on-site storage, and keep regular dialogue open with priority customers.

    Moving crude benzene across borders exposes each shipment to local composition laws, tariff structures, and unique customs documentation. Some years ago, a change in import classification in a major market forced us to rethink labeling and shipment staging, working closely with authorities to clarify what exactly fits as "crude" versus "refined" under customs law. We survived that experience by sticking to transparent batch data and facilitating pre-approval at both shipping and receiving points. Anyone planning to export or import needs more than good intentions—they need strong relationships with inspectors and a deep portfolio of batch certification records.

    Pushing Innovation While Keeping Legacy Processes Reliable

    Older benzene production trains use a lot of energy, and there’s ongoing pressure in the industry to improve yields, shorten heat-up times, and maximize recovery of side products like toluidine or naphthalene. We make it a practice to trial new catalyst formulations, rotary vacuum pumps, and rectification sequence changes. While incremental, every minor process improvement adds up: energy savings drop right to the bottom line, and side aromatics recovery can supply local demand for new solvents or additives rather than being burned off.

    Continuous improvement is part of our culture. Something as simple as upgrading tank insulation or installing real-time online spectrometry for batch sampling helps not only in keeping process tighter, but also in proving to regulators and partners that our product quality and safety systems perform as promised. Customers trust incremental reliability, not just headline technology claims. If an end-user plant in need of a specific benzene blend calls up with new sulfur specs or wants a different processing window for a specialty chemical batch, we can deliver a tailor-fit solution without process delays.

    How Experience Informs Our Day-to-Day Approach

    Chemists, operators, and engineers here draw on decades of accumulated plant experience. Troubleshooting is not theoretical; it's learned with hands on valves, eyes on colorimeters, and personal accountability for every run. Everyone who’s spent years watching batch behaviors in extreme cold or high humidity knows that even minor contamination in benzene will cascade into major issues down the line. Open lines of communication up and down our management chain keep lessons shared. Years back, a tank drain valve misalignment led to off-spec product hitting a customer site; rather than burying the mistake, operators and QC teams met with the buyer, tracked the process slip, shared their logs, and built new safeguards. This hands-on response changed future batch management for everyone on site.

    We measure leadership not by issuing bulletins, but by how quickly we respond to risk and feedback from our customers. We tell new hires that every batch of crude benzene that leaves our plant is a handshake with another manufacturer—we ship the product, but also the assurance of what’s inside each drum. Because we see firsthand how one off-spec batch can affect polymer yields or lead to longer scrubber downtime, we place high trust in our teammates and QC techs who monitor and certify bulk product.

    Looking Ahead: Responding to Market Trends and End-User Demand

    Market demand for crude benzene adapts as new materials research calls for unique aromatic blends. The emergence of performance plastics, specialty resins, or green fuel additives relies heavily on flexible, stable aromatic supply chains. Synthetic rubber plants work closely with us to specify not just benzene content, but acceptable toluene and naphthalene ranges, to fine-tune their own production cycles. By keeping close communication with both upstream refineries and downstream compounders, we position ourselves to support new industry developments faster than might seem possible for a product with such a long industrial history.

    Sustainability expectations are rising. Customers—especially those supplying consumer goods—seek benzene sourced with lower environmental impact and rigorous documentation of origin. We now track not only batch purity, but also provide traceability documentation for raw material sources and lifecycle assessments for key product streams. Some buyers push for greener solvents; we study options in partial hydrogenation, carbon capture, and more efficient energy use during distillation.

    Concluding Reflections from the Plant Floor

    For years, our main lessons have come from hands-on operation: crude benzene delivers real-world value through robust composition and stability in supply. Every week, our manufacturing team reviews operating logs, tank analysis results, and customer reports—learning directly from every batch that ships out. By holding onto practical experience, listening to customer sites, and investing in responsible manufacture, we offer more than raw product. We build enduring supply partnerships based on mutual knowledge, reliability, and the willingness to adapt, batch after batch. For anyone needing dependable, industry-proven aromatic feedstock, this is where our story—and our work with crude benzene—begins.