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Dinitrosobenzene

    • Product Name Dinitrosobenzene
    • Alias DNB
    • Einecs 209-424-4
    • 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
    VTB
    Specifications

    HS Code

    655846

    ChemicalName Dinitrosobenzene
    MolecularFormula C6H4N2O2
    MolarMass 136.11 g/mol
    Appearance Yellow to orange crystalline solid
    MeltingPoint 112-115°C
    BoilingPoint Decomposes before boiling
    SolubilityInWater Slightly soluble
    Density 1.38 g/cm3
    CASNumber 1516-31-4
    StructureType Aromatic nitroso compound
    Odor Pungent
    Synonyms Benzene, dinitroso-
    Stability Sensitive to light and air
    HazardClass Possible irritant

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

    Packing & Storage
    Packing Dinitrosobenzene is packaged in a sealed 250g amber glass bottle with a tightly secured cap, labeled with safety and hazard information.
    Shipping Dinitrosobenzene should be shipped in tightly sealed containers, kept in a cool, dry, and well-ventilated area, away from heat, ignition sources, and incompatible materials. It must be clearly labeled as a hazardous chemical, following relevant transport regulations (such as DOT, IATA, or IMDG), with proper documentation and emergency handling instructions.
    Storage Dinitrosobenzene should be stored in a tightly closed container, in a cool, dry, and well-ventilated area, away from sources of heat, sparks, or open flames. It must be kept separate from strong acids, bases, and reducing agents. Protect from light and moisture. Appropriate chemical safety signage and secondary containment are recommended to prevent accidental release or exposure.
    Application of Dinitrosobenzene

    Applications of Dinitrosobenzene in Industrial Manufacturing

    Dinitrosobenzene, recognized for its unique reactivity and functional group transformations, finds established industrial applications across multiple chemical manufacturing segments. As a direct manufacturer, we support our downstream partners by delivering reliable quality for precise integration into specialized production lines, enabling consistent output in regulated environments.

    1. Rubber Vulcanization Accelerators Production

    Leading rubber chemical manufacturers utilize dinitrosobenzene as a precursor in the synthesis of accelerators such as Dinitrosobenzene Sulfonic Acid and derived thiazole compounds. This specialty application requires precise introduction during the initial phase of reaction with aromatic amines, ensuring control over molecular weight and sulfuration properties. Specialty tire, belt, and technical rubber goods production lines depend on well-characterized raw material input for stable crosslinking behavior in high-volume plants.

    Industry compliance standards

    • ISO 9001:2015 (Quality Management Systems for chemical intermediates)
    • ASTM D4671 (Standard Practice for Rubber Chemical Accelerators)
    • EU REACH Regulation 1907/2006
    • Chinese GB/T 21867—2008 for Rubber Additives

    Typical usage ratio

    • Precursor input typically at 0.5–2.0% by weight of the final accelerator batch, adjusted based on target molecular structure and product strength requirements dictated by rubber compound specifications.

    Downstream process integration

    • Dinitrosobenzene is introduced in the condensation or sulfonation stage, before neutralization and crystallization, ensuring even distribution of nitroso groups and reliable transformation to accelerator compounds.

    Final product types

    • Rubber vulcanization accelerators (e.g., sulfonamides, guanidines, thiurams)
    • Performance tire and conveyer belt compounds
    • Heat-resistant rubber hoses
    • Industrial anti-aging rubber seals

    2. Polymeric Conductive Material Synthesis

    Chemical processors employ dinitrosobenzene as a controlled dopant or intermediate in the production of conducting polymers, such as polyaniline and polyphenylene derivatives. The material's dual nitroso functionality supports oxidative coupling and crosslinking reactions which influence electrical properties, molecular alignment, and mechanical integrity within the finished conductive films or composites used in electronics.

    Industry compliance standards

    • IEC 61249-2-21 (Requirements for polymeric materials used in electronics)
    • RoHS Directive 2011/65/EU (Restriction of Hazardous Substances in electrical equipment)
    • ISO 14001:2015 (Environmental management for chemical processes)
    • UL 94 Flammability Requirements

    Typical usage ratio

    • Varies from 0.2% to 1.0% by mass relative to monomer, based on desired conductivity and thermal stability; developers modify this level according to end-user device specifications.

    Downstream process integration

    • Added during the oxidative polymerization or blending stage with monomer feedstock in reactor setups, often under nitrogen or inert gas to prevent premature side-reactions.

    Final product types

    • Antistatic packaging films
    • Printed circuit board laminates
    • Electromagnetic shielding polymers
    • Organic semiconducting components

    3. Analytical Reagent Manufacturing

    Industrial reagent producers select dinitrosobenzene for the formulation of specialty test kits and indicator compounds, particularly for nitroso-based colorimetric analytical methods. Its reactivity under alkaline conditions with select cations and organic substrates enables highly specific detection and quantification protocols, which laboratories rely on for process control and regulatory compliance testing.

    Industry compliance standards

    • ISO 17034 (General requirements for the competence of reference material producers)
    • United States Pharmacopeia (USP Reagent standards, where applicable)
    • EN ISO/IEC 17025 (Testing and calibration laboratory accreditation regarding reagent use)

    Typical usage ratio

    • Dosed at 0.01–0.1% w/v for indicator and colorimetric solution formulation; concentrations adjusted based on protocol sensitivity and threshold detection limits.

    Downstream process integration

    • Incorporated during the reagent blending and solution preparation step, followed by stabilization and bottling under controlled environmental conditions to avoid degradation.

    Final product types

    • Industrial water test kits
    • Colorimetric assay reagents for laboratory analysis
    • Quality control solutions for chemical and environmental monitoring

    4. Specialty Dye Intermediate Manufacture

    Manufacturers targeting the specialty dye sector employ dinitrosobenzene as a building block for the synthesis of azo and nitroso dyes. It reacts via diazotization or reduction steps to yield color precursors that impart distinctive chromatic properties, essential for textile, leather, and ink industries requiring batch-to-batch visual consistency and resistance to environmental stressors.

    Industry compliance standards

    • Oeko-Tex Standard 100 (Chemical use in textiles and dyes)
    • EU Regulation (EC) No 1907/2006 (REACH – Substances of Very High Concern, pigment intermediate sections)
    • ZDHC MRSL (Manufacturing Restricted Substances List for specialty dyes)

    Typical usage ratio

    • Range from 1.0% to 5.0% of batch mass, dependent on target dye structure, solubility, and intensity required by downstream applications.

    Downstream process integration

    • Utilized in the initial reaction stage with aromatic amine partners or as an intermediate step in multi-stage molecular build-up processes before dye isolation and purification.

    Final product types

    • Nitroso and azo textile dyes
    • Leather coloring agents
    • Printing ink pigments
    • Industrial marking fluids
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    Certification & Compliance
    More Introduction

    Dinitrosobenzene: Shaping Progress Through Chemistry

    Direct from the Manufacturer: Experience Makes the Difference

    At our plant, seeing a batch of dinitrosobenzene complete its journey, from raw materials to a crystalline finish, gives everyone a sense of purpose. This is not a new compound on the market, but the way we have honed the process over decades means the end product offers far more than what’s on a data sheet. The formula is familiar — C6H4N2O2 — but its story is shaped by both innovation and consistency on the production floor.

    Product Overview: A Solid Foundation in Organic Chemistry

    Dinitrosobenzene stands out among moderate molecular-weight aromatic nitroso compounds. Our process yields the meta-isomer (m-dinitrosobenzene) as the primary product, though demand for the para-isomer led us to develop a separate line. Each presents its own reactivity profile and color, making them easy to distinguish at a glance. With a sharp green or blue hue, depending on isomer, our regular customers have come to recognize quality before the material even hits their reactors.

    Most batches achieve more than 98.5% purity as monitored by HPLC, with residual moisture and trace byproducts kept to minimal levels through a carefully balanced drying process. Shelf life is long if stored well—moisture, temperature swings, and unwanted sunlight are the real enemies here. Years of experience have shown us the value of special packaging solutions: UV-resistant drums, active desiccant liners, and tamper-evident seals. It only takes a single exposed shipment to appreciate this kind of protection.

    Applications: Where Dinitrosobenzene Makes a Mark

    One of the first lessons anyone hears in the lab is simple: A nitroso group opens special doors, and two of them on one benzene ring means new chemistry. As a key intermediate, dinitrosobenzene has found a home in several fields. Rubber accelerators are its main stage. The step between a modest green crystal and a high-speed rubber vulcanization agent is not long, but the reaction demands reliability above all else. Failures cost production hours and affect quality all the way down the tire line.

    Specialty polymer companies watched how dinitrosobenzene transformations create tailor-made structures for anti-ozonant additives and crosslinking agents. A few grams tuned just right can change how long a glove or hose stays flexible in tough industrial settings. Chemical engineers continue to find new uses for its strong electron-withdrawing and donor abilities. These characteristics make the compound an effective starting point for synthesizing dyes and specialty colorants — certainly not the biggest share of the pie, but a persistent one.

    Some research groups push boundaries by introducing dinitrosobenzene into pharmaceutical libraries, exploring its properties as a possible bridge into new molecular frameworks. The old hydrocarbons, such as aniline, once ruled many segments of organic synthesis. Dinitrosobenzene’s appeal stems from the capacity for regioselective reaction — both isomers bend to different reagents in different ways. Having both forms on hand lets a chemist plan an efficient route, with fewer steps and better atom economy.

    Differences from Other Nitroso Compounds

    We get questions: “Can I use mononitrosobenzene for the same job?” Time and again, tests show the answer often falls short, especially when selectivity or stability matters. Dinitrosobenzene holds its own in catalytic cycles; its dual nitroso groups introduce extra resonance effects, improving both reactivity and control for some reactions. The physical handling also changes — dinitrosobenzene’s higher melting point and lower volatility offer safety advantages, particularly for large-batch operations. Anyone who’s dealt with runaway volatilization in older batches of nitrosobenzene can appreciate the risk reduction.

    Look at the color, solubility, and isomer-specific reactivity — these traits trace directly back to how the molecule sits together. While mononitrosobenzene finds some use as a solvent or in synthesis, the double nitroso function gives dinitrosobenzene a bigger role in making new carbon-nitrogen bonds. This is essential for custom catalyst developers exploring innovative ligands in metal complex chemistry. Trying to swap in a close structural cousin has cost some customers unexpected headaches — issues ranging from poor yield to unpredictable side products.

    Manufacturing Considerations: What Experience Teaches

    On the factory floor, precision matters. Sourcing the right aniline derivative and controlling each oxidation step directly influence the quality of dinitrosobenzene. We still see contamination risks from oxidants that work too harshly, burning material or introducing unwanted tars. Rushing things for speed brings regrets: harsh conditions result in unpredictable discoloration and product that simply won’t pass a simple recrystallization test.

    People sometimes overlook how sensitive dinitrosobenzene can be to basic storage choices. Early on, some shipments developed a sticky layer during shipment, traced back to moisture leaks and poorly fitted closures. Improvements in packing — using proper liners and vapor-phase guards — dramatically cut those incidents. This is not just theory or a line from the sales playbook; customer returns dropped, waste disposal costs fell, and the product reaches labs and plants worldwide as intended.

    Sustainability, Safety, and Handling

    Working with this compound every day brings an appreciation for both its power and its hazards. Dinitrosobenzene, like all aromatic nitroso intermediates, calls for robust safety controls. Gloves, goggles, and adequate airflow are the baseline. On larger scales, investments in closed systems have made big differences: process engineers and operators do not want unnecessary exposure. We have learned not to take shortcuts during drum filling or material transfer, as the dust and vapors are not forgiving — strict process procedures prevent incidents and keep downtime away.

    We have seen an interest in environmental impact, especially as regulators look closer at hazardous intermediates. Our team revisited historical processes, searching out ways to recover and reuse byproducts, minimize water use, and capture fugitive emissions. There is always more to do, and the best progress comes from those who know the process intimately, living with its quirks and learning from each batch. Sustainable production does not mean a half-hearted filter or routine documentation — it means listening to operators, learning from failures, and reducing waste from the source.

    Responding to Customer Feedback: Lessons in Product Development

    A manufacturer does not survive by clinging to a single process. Customers working in composite rubber production needed a higher purity grade, free from trace metals and particulate debris. We invested in additional purification columns and fine filtration methods — not because any standard required it, but because rubber processors showed us how much those impurities compromised their catalysts downstream. That led to an “ultra-pure” model, which now forms the backbone for certain export contracts.

    On more than one occasion, a prospective customer attempted to switch to a “substitute” nitroso compound, chasing cheaper upfront costs. In every case where we were asked for troubleshooting support afterward, the conversation circled back to missing product performance, unexpected color formation, or stubborn residues that clogged their reactors. This is not just luck or branding — chemistry cares about details. Saving pennies in the short term led to more downtime, higher solvent use, and material rejected at QA. These stories motivated us to keep refining technical support resources and real-time application guidance.

    Regulatory Pathways and Quality Assurance

    Producing dinitrosobenzene means more than managing a few drums of precursor or optimizing a reaction yield. Regulatory authorities expect documentation at every stage, from raw material sourcing through to waste remediation. Each new production run starts with detailed batch tracing and ends with full certificate packages for customers. Our on-site quality lab checks each batch not just for identity and assay, but also for trace contaminants. We do not take chances with heavy metals or product admixture; even small deviations cloud both reputations and downstream results.

    There’s a reason we stick with rigorous batch testing and openly share analytical data. Long-term users count on every delivery matching the previous one. Chemical properties may appear set in stone, but no two batches are ever entirely identical, which is why so much time goes into recordkeeping and ongoing test calibration. The lab team tracks not only product properties but also compares performance in real-world applications — knowing what the customer actually sees, not just what the instrument reads.

    Continuous Improvement in Dinitrosobenzene Manufacturing

    Improvements are not a one-off achievement. Engineering teams have added steps to maximize process yield and reduce the energy demand of our oxidation units. Minor tweaks, some suggested by operators watching day-to-day operations, led to optimizations that cut both raw material costs and energy waste. These are not glamorous changes, rarely making headlines, but over years they add up. The result is a product that supports competitive pricing and reduces environmental burden, all without compromising quality.

    Customers shaping high-performance polymers push us to challenge what purity and reactivity mean in practical terms. The trend has gone toward custom isomer blends or matched impurity profiles, often initiated by researchers trying to solve a particular performance problem in a novel rubber or elastomer project. Our plant has developed small-batch, high-specification production for such customers, learning to communicate transparently about variation between runs. This dialogue closes the gap between manufacturing and end-use demands, preventing costly surprises.

    Educating the Industry: Sharing What We Know

    We stay in close contact with university partners, collaborative research centers, and process chemistry consultancies. The knowledge learned from day-to-day handling, batch failures, and unusual customer requests is far too valuable to keep in a locked filing cabinet. Through technical workshops, plant tours, and published case studies, the team passes hard-won lessons on to the next generation of polymer and rubber chemists. Some competitors prefer to hide specific methods, but open communication about proper handling, reactivity differences, and safe process design supports the whole market in the long run.

    Tech transfer from traditional synthesis routes to continuous flow reactors has required a change in thinking — what worked well in batch mode did not always scale safely. Our engineers have shown that controlled feed rates, optimized residence times, and precise temperature monitoring are not just for show: they underpin the consistent output and safety every customer expects.

    Dinitrosobenzene in the Larger Chemical Industry

    Chemical synthesis at scale is never just about making grams or kilograms of a compound. Each batch of dinitrosobenzene ties into broad supply chains feeding industries as diverse as automotive, textiles, medical device manufacturing, and agricultural research. Fluctuations in raw material prices, shifts in global regulation, and changing customer demand mean adaptation is constant.

    Some years, increased scrutiny on nitroso compounds in environmental legislation means tightening shipping, storage, and waste disposal regimes. Real relationships with regulatory compliance officers — built from years of honest reporting and continuous improvement — help navigate these shifts. Customers have counted on us to manage documentation and clarify how our procedures meet the evolving patchwork of regional and international standards.

    Reliability: Building Trust Batch by Batch

    Every drum of dinitrosobenzene that leaves our site represents weeks of close work. From chemists triple-checking reagent purity to warehouse teams securing packages for export, every hand that touches the material adds their knowledge to the end product. Our experience shows that reliability matters more than any single innovation. A customer who builds a process around a stable dinitrosobenzene supply wants consistency above all.

    Supply interruptions from competitors, due to erratic output or poor quality, have brought new partners to our door. We never take those relationships for granted. Treating every customer technical issue as unique — even if it appears routine — drives future improvements. Regular dialogue keeps us alert to changing requirements and gives us feedback that shapes process upgrades, specification adjustments, and storage advice.

    Conclusion: Looking Forward with Dinitrosobenzene

    Decades of producing dinitrosobenzene have shaped a culture of vigilance, adaptability, and responsiveness. Every new research publication on advanced rubber compounds, every regulatory rulebook update, and every customer batch trial keeps us learning. Challenges never fully disappear, but a practice built on honest feedback, firm technical grounding, and daily commitment to improvement ensures the next batch meets the mark.