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HS Code |
786989 |
| Cas Number | 3460-93-7 |
| Molecular Formula | C11H9Br |
| Molecular Weight | 221.10 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Boiling Point | 282-284 °C |
| Melting Point | 16-18 °C |
| Density | 1.43 g/cm3 at 25 °C |
| Refractive Index | 1.648 |
| Purity | Typically ≥98% |
| Flash Point | 133 °C |
| Solubility In Water | Insoluble |
| Smiles | CC1=CC2=CC=CC=C2C=C1Br |
As an accredited 1-Bromo-2-Methylnaphthalene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Amber glass bottle containing 25 grams of 1-Bromo-2-Methylnaphthalene, sealed with a screw cap, labeled with safety and chemical information. |
| Shipping | 1-Bromo-2-Methylnaphthalene should be shipped in tightly sealed containers, protected from light and moisture. It must comply with regulations for hazardous chemicals, typically classified as a harmful substance. Ship via ground or air using approved packaging, with clear labeling and proper documentation, in accordance with local, national, and international transport guidelines. |
| Storage | 1-Bromo-2-Methylnaphthalene should be stored in a tightly closed, clearly labeled container, in a cool, dry, and well-ventilated area, away from direct sunlight, sources of ignition, and incompatible substances such as strong oxidizers. Keep the container protected from moisture. Store at room temperature and follow all relevant chemical safety guidelines and local regulations for hazardous materials. |
Applications of 1-Bromo-2-Methylnaphthalene in Industrial ManufacturingAs a direct manufacturer, we supply 1-Bromo-2-Methylnaphthalene to global industrial users engaged in high-purity synthesis and advanced specialty chemical production. Our material integrates into several targeted chemical value chains, delivering unique molecular utility for key downstream applications. The following scenarios reflect the main industrial use-cases based on market-validated adoption, precise technical requirements, and compliance-driven manufacturing needs. 1. Agrochemical Intermediate SynthesisAgrochemical formulators employ 1-Bromo-2-Methylnaphthalene as a key halogenated building block in the multiphase synthesis of advanced naphthalene-derived herbicides and fungicides. Its brominated position enables high specificity in palladium-catalyzed coupling reactions, essential for constructing custom-substituted aromatic agrochemicals required for modern crop protection. Our material demonstrates high lot-to-lot purity critical for reaction yield and downstream purity control in final actives. Industry compliance standards
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2. Pharmaceutical Intermediate ManufacturingPharmaceutical API producers utilize 1-Bromo-2-Methylnaphthalene as a core intermediate in the synthesis of specific naphthalene-based drug molecules, especially where regioselective aromatic bromination is essential. These intermediates enable total synthesis of certain antihypertensive and anti-inflammatory drug candidates, where batch reproducibility, purity ≥99.0% (by HPLC), and trace-element control are mandatory for compliance and registration. Industry compliance standards
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3. Material Science: Liquid Crystal Intermediate SynthesisProducers in the advanced material sector employ 1-Bromo-2-Methylnaphthalene for synthesizing high-performance naphthalene-core intermediates used in the liquid crystal industry. Its molecular structure enables the construction of mesogenic units with controlled geometry, essential for liquid crystal mixtures exhibiting high thermal and electrical stability in display panel production. Strictly controlled batch composition and low residual impurities are required to prevent performance drift in display end-use. Industry compliance standards
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4. Dye and Pigment Intermediate ProductionDye and pigment manufacturers use 1-Bromo-2-Methylnaphthalene to introduce bromo-naphthyl functionality into azo and anthraquinone chromophores. The controlled substitution pattern provided by the 1-bromo-2-methyl structure supports precise color tuning, bathochromic shift optimization, and stability improvements for pigments destined for coatings, plastics, and textile applications. End-use sectors require tight color index reproducibility and minimal residual halogen. Industry compliance standards
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5. Specialty Polymer Monomer ProductionSpecialty polymer producers leverage 1-Bromo-2-Methylnaphthalene as an advanced monomeric precursor for synthesizing aromatic naphthalene-containing polymers and copolymers. Its defined brominated site provides a reactive handle for further functionalization, creating rigid backbone units that enhance heat resistance and chemical durability in engineering plastics. Quality consistency in monomer supply supports stable mechanical properties in final resins used in electronics and automotive components. Industry compliance standards
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As a chemical manufacturer, our focus has always been on producing high-purity aromatic intermediates that scientists and engineers rely on for synthesis and scale-up. 1-Bromo-2-Methylnaphthalene (CAS No. 573-98-8) is an example of a compound where each batch that leaves our production line reflects lessons learned from years of hands-on work, hundreds of purity tests, and extensive collaboration with downstream users.
Our facility generates 1-Bromo-2-Methylnaphthalene through controlled bromination of 2-methylnaphthalene, following strict guidelines to keep by-product levels to a minimum and consistently deliver product above 98% purity. Experience tells us that the purity of the starting material makes a major difference in the yield and selectivity researchers can achieve—impurities can’t always be scrubbed out downstream, and tight control in the manufacturing step saves unnecessary headaches later.
Since its main role is as an intermediate, 1-Bromo-2-Methylnaphthalene rarely stays around for long. Clients transform it into building blocks for pharmaceuticals, advanced materials, and organic electronics, exploiting the activated aromatic bromide and the methyl group’s ortho orientation for targeted couplings or functionalizations. Organometallic workers often use it as a substrate for Suzuki or Heck reactions, where the quality of the naphthalene ring can mean the difference between a clean reaction and a low-yield mixture.
Over the years, we’ve supplied 1-Bromo-2-Methylnaphthalene to research labs and large manufacturing sites. These collaborations often start with a request for a small kilo batch and grow into regular metric-ton orders, once confidence in product consistency is established. Physical properties, such as its clear yellowish color, and precise GC and NMR profiles, are monitored for every lot. We’ve learned that rigorous quality control isn’t just regulatory compliance; it’s what makes downstream processes reliable and prevents wasted batches for our clients.
Customers often want to know about the practical details that affect project timelines and costs. We produce 1-Bromo-2-Methylnaphthalene in several grades depending on requested impurity profiles, with the standard grade exceeding 98% purity by GC. Each drum or bottle is packaged to prevent light exposure and oxidation, which we have found can be a source of unwanted side reactions, especially for long-term storage. Moisture content and residual starting materials are both tracked batch by batch and included in the Certificate of Analysis for each shipment.
Solubility data matter for formulation. This naphthalene derivative dissolves readily in organic solvents such as dichloromethane, chloroform, and toluene. Over the years, we have compared solvent compatibility among several aromatic halides and found that the slightly lower polarity of 1-Bromo-2-Methylnaphthalene does, in practice, speed up dissolution and mixing in many manufacturing environments. Viscosity is another overlooked feature: the liquid form at room temperature helps avoid melting steps, a small time-saver on a busy production floor.
Handling and storage have taught us more than the textbooks could. Drums of 1-Bromo-2-Methylnaphthalene do best in cool, shaded warehouses and with minimum air headspace. We have worked with clients who found that replacing plastic seals with specially selected elastomers on their containers sharply reduced contamination risks over several months of storage.
Time in the factory reveals the subtle advantages of this intermediate over similar materials. The naphthalene core is a favored scaffold for polyaromatic coupling, but bromine substituents provide far easier downstream activation compared to their chloro or iodo cousins. The ortho-positioned methyl group in our product model forms a unique combination, both activating the ring and offering a point of difference in steric impact for catalytic reactions. Customers often move to 1-Bromo-2-Methylnaphthalene after trouble with 2-chloronaphthalenes or 1-bromonaphthalene, especially when side-reactions or selectivity issues dented their process economics.
Some manufacturers prefer 1-Bromonaphthalene because it’s more widely available, but years of side-by-side comparisons have shown that the methyl group in 1-Bromo-2-Methylnaphthalene enables finer control over regioselectivity in subsequent cross-coupling steps. For instance, in certain pharmaceutical intermediate syntheses, the methyl group not only directs ortho-metalation or other functionalizations but also influences the ultimate biological profile of the end compound.
From a process safety viewpoint, the volatility and reactivity characteristics of our product compare favorably with heavier halonaphthalenes and iodinated aromatics. Through internal transport audits and customer feedback, we’ve continually improved our packaging materials to minimize leaks and accidental losses, something that can be problematic with more reactive or less stable intermediates.
Chemists look to 1-Bromo-2-Methylnaphthalene when synthesizing heterocycles or complex polycyclic aromatic compounds. In our own technical support programs, we have fielded questions about reactions ranging from classical Grignard additions to high-tech palladium-catalyzed C–C couplings. Having seen the pitfalls and successes of these applications, we advise our users to tightly control reaction atmospheres and use freshly distilled solvents for best results.
Clients in the pharmaceutical sector select our product for its ease of functionalization. Medicinal chemists, when scaling up from laboratory benches to plant-scale reactors, have shared the pain points of lower-purity alternatives: sticky residues, inconsistent reaction yields, and off-spec by-products. By controlling sulfur, oxygen, and chlorine impurities down to sub-ppm levels, our manufacturing plant helps customers sidestep these setbacks.
In organic electronics and material sciences, we have seen growing demand for 1-Bromo-2-Methylnaphthalene in the preparation of precursor molecules for OLEDs and advanced pigments. Academic partners and industrial users have both reported that batch-to-batch color shifts and product quality drift plagued their research, until we helped them fix the process by tightening up on bromination controls and purifying the end intermediate using multiple-stage distillation. Our quality improvements have helped these innovators focus on their own work, not on compensating for raw material variability.
Running a chemical manufacturing plant means dealing with the real-world quirks of each product. During the early years, we found that even minor fluctuations in temperature or stirring rate during bromination caused unpredictable by-products and color changes. After repeated trial and error, and working side-by-side with plant operators, we established robust in-line monitoring to track product characteristics continuously—not just at end-point testing. Quality doesn’t happen by accident: tight process controls and frequent sampling now keep the purity levels high and impurities where we want them—well below actionable thresholds.
Logistics and regulatory hurdles accompany specialty aromatics. Many new clients come to us frustrated after lost time clearing customs or dealing with hidden impurities. Over the years, we have built up documentation practices and established clear lines of communication with freight forwarders and customs agents. As global shipment requirements get stricter, we have invested in training for our export team and have digitalized our batch records, which has removed much of the guesswork and rework typical with aromatic intermediates crossing borders.
Supply chain volatility is a reality in chemicals. Feedstock quality and availability can shift due to issues as far away as new plant construction or environmental policy in source countries. To cushion against this uncertainty, we maintain local relationships with key suppliers and hold back-up inventories of critical raw materials. Communication with our clients is constant: transparency keeps everyone ahead of potential shortages or quality surprises.
Waste minimization helps keep our sustainability targets on track. Early on, halogenation reactions left us with large amounts of acidic waste that strained our effluent treatment systems. After repeatedly reworking process flows with our engineering team, we rerouted by-products for recycling and introduced tighter controls that have cut waste volumes and disposal costs by over half. This continuous improvement mindset—born from need, not hype—benefits every batch we produce and keeps regulators and neighbors supportive of our operations.
Competitors’ aromatic halides sometimes promise the same chemistry, but over time, chemists and engineers recognize the subtle differences in behavior once reactions scale up or process conditions shift. Based on actual feedback, 1-Bromo-2-Methylnaphthalene grants greater selectivity and yield in many palladium-catalyzed cross-coupling reactions. Light-sensitive users working under photochemical conditions find it less prone to generating undesired side products than some brominated biphenyl or polybrominated analogues.
From a worker safety perspective, our experience with halogenated aromatics like 1-bromonaphthalene and chlorinated naphthalenes points to lower inhalation and dermal risks with 1-Bromo-2-Methylnaphthalene, provided proper ventilation and PPE are used. Our safety records, built on thousands of man-hours in closed-system transfers, point to this compound as being well within standard handling procedures for modern specialty chemical plants.
Alternative products such as 2-Bromonaphthalene come up in customer inquiries, especially if price or availability shifts. The structural isomerism introduces subtle yet meaningful differences in reactivity, with downstream functionalizations often showing superior regioselectivity and cleaner NMR spectra with the 2-methyl version. Over several process development projects, our clients managed to shave days off their scale-up timelines by switching over to our material—often citing cleaner work-ups and lower waste in their production notes.
Manufacturing specialty chemicals opens a window into the challenges faced by real people down the supply chain. Our technical team remains in constant dialogue with researchers and process chemists using 1-Bromo-2-Methylnaphthalene. We troubleshoot unexpected reaction outcomes, devise storage protocols to preserve product quality, and track emerging regulatory changes that could impact safe transport. These regular exchanges feed back directly to our plant, shaping the way we improve material quality and logistics every year.
Feedback from a global network keeps us alert to opportunities for improvement. Some researchers asked for custom impurity profiles, tailored crystallinity, or extra-tight GC limits—a signal to us that application-specific needs evolve. We have added multiple analysis tools to our in-house lab and keep standard and custom grades ready for rapid delivery. For high-purity requirements or gram-scale R&D, we prepare special orders using dedicated lines, following protocols that veteran technicians developed over years of hard-earned insight.
Training and upskilling production staff pays enormous dividends. Over the years, we have built a team where operators and lab analysts share responsibility for every finished drum or bottle of 1-Bromo-2-Methylnaphthalene. Problems flagged on the packaging floor flow quickly to process engineers; process changes, once validated, become everyday procedure. Our commitment to clear in-person training shapes a culture focused on reliability and pride—qualities that no automation can fully replicate.
Producers of brominated aromatics, ourselves included, have long faced scrutiny from local communities and environmental agencies. Regulations grow stricter every year, pushing us to reduce emissions and develop safer, cleaner processes. Our own plant invested in closed-loop bromine recovery systems, not just to save raw material costs but to cut the environmental footprint of every batch. Spills and accidental releases are not only costly—they erode trust. That’s why we triple-check our seals and containment plans for every outgoing shipment.
Clients sometimes ask about our approach to chemical stewardship. Our team reviews our product life cycle annually, searching for further chances to cut waste, increase yields, or design better controls that prevent off-spec product. By sharing data with research partners and even competitors, we’ve pitched in on industry initiatives for greener halogenation technology, safer transport protocols, and more efficient downstream conversions.
Future challenges will keep us on our toes. Engineering new catalysts, integrating digital quality assurance programs, and training the next generation of plant operators all demand attention. Each day in the plant brings new puzzles—storage tank maintenance, minor process tweaks, new regulatory filings. Every success is built on the trust earned from customers who rely on our 1-Bromo-2-Methylnaphthalene, and every challenge is a reminder that there’s more to learn and improve.
Real progress in specialty chemicals depends less on glossy literature and more on the gritty, repetitive work in the background—batch records, impurity tracking, risk analysis, and countless rounds of troubleshooting. Supplying 1-Bromo-2-Methylnaphthalene means more than churning out a molecule; it means standing behind every drum, ready to adjust production for new specifications, to support clients’ troubleshooting needs, and to push environmental standards higher, one improvement at a time.
Lessons learned from decades on the manufacturing side shape every feature of our product. The focus stays on practical value for the people who take our material and run with it, whether they work in academia, pharmaceuticals, electronic materials, or custom synthesis. Our commitment to pure, consistent 1-Bromo-2-Methylnaphthalene reflects what matters most: long-term relationships, a strong safety culture, and a willingness to solve tough problems together.