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1,4-Dibromonaphthalene

    • Product Name 1,4-Dibromonaphthalene
    • Alias 1,4-Naphthalenedibromide
    • Einecs 216-068-7
    • 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

    363862

    Chemical Name 1,4-Dibromonaphthalene
    Cas Number 523-27-3
    Molecular Formula C10H6Br2
    Molecular Weight 298.97 g/mol
    Appearance White to light yellow crystalline powder
    Melting Point 98-102 °C
    Boiling Point 346 °C
    Density 1.96 g/cm3 (20 °C)
    Solubility In Water Insoluble
    Refractive Index 1.681
    Purity Typically ≥ 98%
    Flash Point 202.1 °C
    Smiles Brc1cccc2ccc(Br)cc12

    As an accredited 1,4-Dibromonaphthalene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 1,4-Dibromonaphthalene, 25g, is packaged in a sealed amber glass bottle with a screw cap and hazard labeling.
    Shipping 1,4-Dibromonaphthalene should be shipped in tightly sealed containers, protected from moisture and direct sunlight. It is classified as a hazardous material and should be transported according to relevant regulations (such as DOT, IATA, or IMDG). Ensure proper labeling and documentation, and handle with care to prevent leaks or spills during transit.
    Storage 1,4-Dibromonaphthalene should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from incompatible substances such as strong oxidizers. Keep it protected from light and moisture. Storage should be in a designated chemical storage cabinet, ideally designed for organohalides, and the container should be clearly labeled to avoid accidental misuse or exposure.
    Application of 1,4-Dibromonaphthalene

    Applications of 1,4-Dibromonaphthalene in Industrial Manufacturing

    As a direct manufacturer, we supply 1,4-dibromonaphthalene to select industrial sectors that depend on stringent process integration, reliable supply consistency, and robust compliance. Below, we outline key real-world application routes, specifying process methods, standards, blending recommendations and downstream deliverables for modern industrial users.

    1. Advanced Organic Synthesis for Agrochemical Intermediates

    Leading agrochemical producers utilize 1,4-dibromonaphthalene as a strategic intermediate during the multi-stage synthesis of naphthalene-derived fungicides and insecticides. Synthesis protocols require strict control over reaction temperature, solvent selection, and reagent stoichiometry when introducing the dibromo functionality prior to further derivatization. Operators select this raw material for its bromine placement and aromatic stability, facilitating halogen-exchange and cross-coupling steps essential in building effective crop protection molecules.

    Industry compliance standards

    • REACH Regulation (EC) No 1907/2006 for substance registration and traceability
    • ISO 9001:2015 certified quality management systems for raw material sourcing and supply
    • Agrochemical product directives 91/414/EEC and related local pesticide regulations
    • EPA TSCA (Toxic Substances Control Act) for US market-bound compounds

    Typical usage ratio

    • 15–30 mol% used as a precursor in multi-step synthesis, adjusted based on target active ingredient molecular design

    Downstream process integration

    • Added at the aromatic halogenation stage
    • Feeds directly into Suzuki or Buchwald–Hartwig cross-coupling steps
    • Present in the crude reaction mixture prior to purification and formulation
    • Utilized in scaling pilot runs to manufacturing batches up to several tons

    Final product types

    • Protective fungicides for grains and vegetables
    • Custom pesticide intermediates
    • Halogenated agricultural compounds for multi-season field application
    • Crop protection seed coatings and dispersible tablet actives

    2. OLED and Organic Semiconductor Manufacturing

    In the electronics industry, 1,4-dibromonaphthalene serves as a core precursor for the fabrication of functionalized naphthalene derivatives used in organic light-emitting diodes (OLEDs), field-effect transistors (OFETs), and advanced semiconducting materials. Precision in purity and controlled halogen substituent positions are critical for downstream coupling and polymerization reactions used to generate high-performance optoelectronic layers. Producers incorporate our material during controlled low-residue synthesis stages that precede thin-film deposition and device assembly.

    Industry compliance standards

    • RoHS Directive 2011/65/EU for restriction of hazardous substances
    • ISO 14001 for environmental management during production
    • JEDEC JESD 625B for moisture-sensitive device materials
    • IEC 60747 semiconductor standards for material traceability

    Typical usage ratio

    • 10–25 wt% relative to total organic semiconductor monomer feed, with adjustments based on device architecture

    Downstream process integration

    • Charged into the coupling flask during Grignard or Stille cross-coupling reactions
    • Feeds into high-molecular-weight polymer synthesis for subsequent film casting
    • Processed in solution-phase synthesis lines prior to device-grade purification
    • Purified material introduced to batch or roll-to-roll coating stations

    Final product types

    • OLED display emissive layers (blue/green emitters)
    • OFET semiconducting films
    • Flexible display panel components
    • Printable circuit patterns for smart packaging and sensors

    3. Pharmaceutical Intermediate Synthesis

    Custom synthesis houses and major pharmaceutical exporters require 1,4-dibromonaphthalene as a monomer and coupling partner during the assembly of select heterocyclic drug intermediates. Its use centers on precise halogenation and ring-functionalization steps critical for introducing diversity during candidate screening of new molecular entities. Manufacturers demand high purity, reproducibility, and exhaustive analytical verification to comply with stringent regulatory filings and cGMP batch release processes.

    Industry compliance standards

    • ICH Q7A Good Manufacturing Practice Guidance for Active Pharmaceutical Ingredients
    • USP–NF monographs for reference intermediate quality (where applicable)
    • EDQM CEP submission traceability (where required)
    • FDA DMF listing when applied as part of regulated API process

    Typical usage ratio

    • 10–40 mol% per step, directly proportional to scale of API output and multi-gram–multi-kilogram runs

    Downstream process integration

    • Loaded at the aromatic halogenation or coupling step
    • Feeds advanced heterocycle assembly or halogen-exchange chemistry
    • Integrated at preclinical and process R&D stages
    • Processed with full traceable batch records for filing/validation

    Final product types

    • Complex pharmaceutical intermediates
    • Chemical building blocks for regulated APIs
    • Reference standards for pharma R&D labs
    • Clinical candidate molecules under development

    4. High-Performance Dye and Pigment Manufacturing

    1,4-dibromonaphthalene acts as a crucial halogenated substrate in the synthesis of specialty naphthalene-based dyes and pigments. Colorant producers rely on precise dibromo substitution patterns to generate high-stability chromophores with tailored solubility and UV resistance for demanding plastic and textile applications. Stringent batch-to-batch consistency is required, especially when processing for high-dispersion masterbatch and automotive pigment dispersions, where color uniformity and migration resistance are critical for end-user quality.

    Industry compliance standards

    • EN 71-3 safety requirements for toys (as relevant to pigment safety)
    • ISO 9001:2015 for quality monitoring
    • OEKO-TEX® Standard 100 for dye export to textile sector
    • REACH Annex XVII for chemical use in formulated pigment dispersions

    Typical usage ratio

    • 5–20 wt% in the pigment synthesis mixture, with adjustments for desired chromophore yield and intensity

    Downstream process integration

    • Enters the reaction as an aromatic halogen source during chromophore synthesis
    • Undergoes subsequent functionalization or coupling to enhance pigment stability
    • Processed through filtration, washing, and dispersion post-reaction
    • Combined with dispersants prior to downstream plastics or textile application

    Final product types

    • High-purity organic pigments for plastics
    • Textile dyes with controlled shade and fastness
    • Printing inks for packaging and security printing
    • Automotive and construction colorant additives
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    Certification & Compliance
    More Introduction

    Introducing 1,4-Dibromonaphthalene: Quality from the Source

    As a direct manufacturer of 1,4-Dibromonaphthalene, we have spent years refining our processes and quality standards in brominated aromatic compounds. Our plant does not just aim to produce chemicals; we want users to see the difference that dedicated synthesis, purification, and technical experience bring to specialty chemicals like this. Across decades, requests from clients in dye manufacturing, organic electronics, and agrochemical intermediates have shaped the way we see 1,4-Dibromonaphthalene—not just as another chemical, but as a linchpin for advanced research and production. Every kilogram that leaves our facility shows the accumulated effort behind reproducibility, safety, and reliable supply.

    Production Model and Purity Matters

    Our 1,4-Dibromonaphthalene is produced at industrial scale, using a synthesis route we have fine-tuned for maximum yield and minimal impurities. Production batches go through a combination of chromatographic and crystallization steps, ensuring a consistent product. Chemical manufacturing is often described in terms of process robustness. Here, the numbers bear out the results. The purity level typically exceeds 99%, with clear spectral data that chemists can verify in their own labs. The compound appears as white to pale yellow crystalline powder, with low moisture content and high storage stability. Batch records reveal the extent we go to in order to avoid contamination—no shortcuts, no blending questionable leftovers, and absolutely no tolerance for off-spec lots. For manufacturers using this material in luminescent polymers or dye intermediates, that purity makes a world of difference in colorfastness, electronic behavior, and downstream reliability.

    Straightforward Specifications

    Our 1,4-Dibromonaphthalene has a molecular formula of C10H6Br2 and a molecular weight of 285.97 g/mol. Melting point rests between 112–115°C, confirmed by each production lot. Whether shipping in small or large quantities, we provide unambiguous batch certificates including single-point NMR, high-performance liquid chromatography analysis, and heavy metals testing for those strict applications. We pack according to industrial safety and purity standards—sealable drums with tamper-evident lining, moisture-resistant bags for critical projects, and palletization for bulk orders.

    Applications Built on Real-World Feedback

    Users from several countries have contacted us over the years for a range of specialty applications. Researchers in organic semiconductors value the rigid planar backbone, which supports consistent stacking and predictable charge transport in organic electronic devices. Dye manufacturers use 1,4-Dibromonaphthalene as a building block in the production of naphthalene-based coloring agents, particularly when brightness and wash-resistance matter. The two bromine atoms at specific positions make it the compound of choice for Suzuki and other cross-coupling reactions, where the goals include not just yield, but also clean reaction profiles and minimal pigment fading.

    Agrochemical developers, seeking active intermediates, have asked for 1,4-Dibromonaphthalene in pilot and commercial quantities. The compound serves as a scaffold for complex molecule construction, where impurity carryover can disrupt biological performance. Direct communication with our end-users revealed that, when purchasing from us instead of a wholesaler, they see improvements in reaction outcomes because each batch aligns with the analytical values in their own validation tests.

    Differences from Other Products

    Some may confuse 1,4-Dibromonaphthalene with its isomeric relatives or other dibromo aromatics. The 1,4-configuration places bromine atoms on opposite sides of the naphthalene, a detail confirmed by NMR and GC/MS in every sample we release. This substitution pattern changes the way the molecule participates in coupling reactions and polymerizations, leading to more linear products and consistent mechanical strength in materials science applications. By contrast, 1,5- or 2,6-dibromonaphthalenes introduce branching and less predictable electronic properties—researchers confirm these differences in device performance and product yields.

    Our experience shows that the market sometimes attempts to interchange these isomers or blends, but strict projects—OLED development, functionalized polyaromatics, or targeted dye systems—quickly expose the consequences of using the wrong one. Only 1,4-Dibromonaphthalene gives the right balance between molecular symmetry, electronic delocalization, and predictable reactivity, especially in multi-step syntheses where the smallest impurity could mean lost value down the chain.

    Insights from the Plant Floor—Consistency as the Benchmark

    We have watched customers try samples from several sources, either chasing price or quoting standard specification sheets. In many cases, technical departments tell us they struggle with yield drops, inconsistent color, or equipment fouling, often traced back to high percentages of related isomers in what was labeled "dibromonaphthalene." Our facility runs dedicated lines for each naphthalene product, and every reactor cleanout is tracked with routines validated by independent auditors. That decision came from seeing, years ago, how even trace guesswork or cross-contamination leads to headaches during production scale-up.

    Chemists and engineers rely on supply partners who do not just respond to customer complaints but proactively address them. We have a team running spot QC during synthesis, with the authority to reject and rework any lot even at increased production cost, rather than risk downstream claims or lost reputation. That zero-compromise attitude saves everyone time and waste—accuracy at our end means efficiency and confidence on your line.

    Fact-Based Claims—Documentation and Traceability

    We do not take purity claims lightly. Each drum of our product is linked to a laboratory certificate, referenced with a digital batch code and archived sample reserve. This gives downstream labs and process engineers the tools to connect every order directly to source data. On-site R&D teams, often working under non-disclosure agreements, tell us this level of accountability is unique compared to generalized industrial supply. For partners in regulated industries or export markets, documented analysis results have also saved them costly retests and delays during customs inspections or regulatory reviews.

    Customer audits are always welcome—anyone with the correct chain-of-custody can access spectral archives, impurity profiles, and stability studies. We use this openness to refine not just our 1,4-Dibromonaphthalene, but also the way we track raw material inputs, energy consumption, and even minor loss points in the cycle. It takes years to build real transparency, but only one shipment of off-spec material to risk losing a valued end-user.

    Why Applications Demand Specialist Manufacturing

    Downstream use cases push us to go further than commodity standards. Dye and pigment synthesis reacts dramatically to minor impurity fluctuations in aromatic bromides—small shifts lead to major changes in shade and lightfastness. We have worked alongside team leads in industrial coatings and textile pigment operations who stress-test our product under their unique thermal and photochemical regimes. In the world of OLEDs and organic photonics, researchers care about trace byproducts indistinguishable to standard chromatography. Our protocol includes additional purification for these sensitive segments, isolating 1,4-Dibromonaphthalene at >99.5% purity, verified batch-by-batch by advanced analytical methods.

    Users often do not believe claims until results show up in their device performance or material tests. Actual feedback from syntheses of rigid rod oligomers and ladder-type polyaromatic chains supports our assertion: only this particular isomer at this purity level enables defect-free production at scale. Some have found that switching from generic or reseller-bought dibromonaphthalenes to our plant-sourced material cuts losses due to faulty intermediates or unproductive pilot batches.

    Direct Manufacturer Experience—Beyond the Sales Pitch

    Purchasing chemicals direct from a manufacturer rather than a trader reshapes the relationship. Over the years, we’ve had direct conversations with R&D chemists struggling to understand why their previous batch gave clean yields and the next one did not. Each time, the culprit has come back to variability from non-specialized production routes or batch-specific cross-contamination. Our plant employs dedicated vessels and trained operators for each high-purity line. Each batch run is documented with real-time process checks, often exceeding industry norm as reported on independent supplier audits.

    Scaling from lab to production imposes unique constraints that generic supply just cannot solve. By managing the full synthesis and packaging chain, we help customers troubleshoot bottlenecks that arise when columns plugged, solvents became colored, or raw material conversions fluctuated unexpectedly. We make it routine practice to send supporting analytical documentation—even for small-scale orders—so production and quality control teams always receive what they need for their internal compliance.

    Addressing Common Issues in the Marketplace

    Widespread confusion persists in the open market, where traders sometimes combine different dibromonaphthalenes or blend recovered process material, chasing yields at the expense of end-product performance. Customers who have worked with these sources report persistent reactor fouling, color deviations, and longer filtration times. In our facility, each run is segmented from raw input to final package, with analytical sign-off required before anything leaves our plant. Open dialogue with users pointed to the need for truly vertical manufacturing—having both synthesis and purification under one roof prevents passing on blame to contractors or shifting responsibility down the line.

    Unlike brokers, who move with prevailing pricing, we keep price and supply as predictable as our production allows. Technical partnerships with repeat users help us innovate—process tweaks based on feedback have led to cleaner cuts, higher yields, and reduced process waste. By controlling every step, we give users the confidence to focus on what matters most: reliable research, efficient plant operation, and building products that meet their own tough requirements.

    Solutions Backed by Experience

    A recurring challenge many report is scale-up inconsistency. What works with a kilo of standard 1,4-Dibromonaphthalene sometimes fails when running in multi-ton reactors. We have responded to this by developing sample lots at different process scales, helping clients simulate production, and fine-tune their process parameters. In our plant, continuous feedback from user trials informs process optimizations that prevent minor impurities and batch-to-batch drift. For applications needing particularly high purity, such as molecular electronics and specialty dye molecules, our specialized purification loop removes persistent trace contaminants that standard protocols might miss.

    For those with legacy products facing regulatory tightening on byproducts or impurity specifications, our team supports transition planning and reformulation projects. Moving from a traditional supply source to high-quality raw materials has allowed multiple clients to future-proof their downstream production against changing international standards and customer audits. By documenting each procedural change and analytical test, we have helped users establish a reliable, defendable chemical supply trail.

    What Makes Our Product Stand Out

    The approach taken in our production line creates 1,4-Dibromonaphthalene with minimal byproducts and high stability in extended storage. Temperature and moisture control workflows preserve the compound’s physical characteristics from factory to laboratory bench. Few competitors invest at this level in environmental controls, inventory rotation, or direct shipment tracking. Our users have noted improved storage outcomes, less degradation after extended warehousing, and superior performance when using historical batches in mass balance experiments.

    Many believe that price alone sets apart a better chemical, but we have found—working alongside engineers and chemists—in-field performance creates loyalty far more than any price cut. Real savings emerge not simply from the cost per kilogram, but from secured production runs, lower off-grade waste, and consistently successful regulatory inspections. This reliability builds trust, which can only come from hands-on manufacturing accountability.

    Industry Partnership—Looking Forward

    As company scientists and engineers, our close proximity to actual production lets us see firsthand what works and what doesn’t. Market changes, tighter purity standards, and new technical applications drive us to keep reviewing and updating our 1,4-Dibromonaphthalene line. We collaborate with material scientists and application engineers who report not just what they need, but why their standards are changing. When a client in organic photovoltaics needed a variant with lower residual solvent levels, our response was not to outsource, but to invest in a modified drying protocol and a bespoke testing regimen, reducing solvent to below detection by independent labs.

    Being a manufacturer comes with unique obligations—responsibility for quality, rapid response to feedback, and a direct role in industry progress. End users count on this traceability. Laboratory and commercial buyers tell us they feel the impact straight away: fewer production holds, faster regulatory signoff, better product consistency, and ultimately smoother operation. The relationship goes both ways; real user experience feeds our own process improvement and R&D. That dialogue keeps us ahead of market shifts and technology trends.

    Supporting Claims with Data, Not Hype

    Users seeking reliable 1,4-Dibromonaphthalene find that proof trumps claims. We offer transparent analytical support, open lines of communication, and factory tours for qualifying partners. Test results, not marketing, establish our track record. From the biggest pigment manufacturers to small research spinouts, real performance metrics govern supply decisions. This keeps our focus grounded in what matters—quality, delivery, and honesty in chemical manufacturing. Our approach reflects the reality faced by every engineer or researcher in need of consistent raw materials for modern applications.