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Beta-Bromostyrene

    • Product Name Beta-Bromostyrene
    • Alias 1-Bromo-2-phenylethene
    • Einecs 211-295-5
    • 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

    910133

    Chemical Name Beta-Bromostyrene
    Synonyms 1-Bromo-2-phenylethene
    Molecular Formula C8H7Br
    Molecular Weight 183.05 g/mol
    Cas Number 769-03-7
    Appearance Colorless to yellow liquid
    Boiling Point 230-232 °C
    Density 1.428 g/mL at 25°C
    Refractive Index 1.609-1.613
    Melting Point -28 °C
    Purity Typically ≥98%
    Flash Point 97 °C
    Solubility Insoluble in water, soluble in organic solvents

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

    Packing & Storage
    Packing Beta-Bromostyrene is packaged in a 100g amber glass bottle, tightly sealed, clearly labeled with hazard symbols and product information.
    Shipping Beta-Bromostyrene is shipped in tightly sealed containers, protected from light, heat, and moisture. It is classified as a hazardous material and is transported following applicable regulations for flammable liquids. Proper labeling and documentation are required to ensure safe handling and compliance during transit. Store in a cool, secure area upon arrival.
    Storage Beta-Bromostyrene should be stored in a tightly sealed container, protected from light and moisture, in a cool, dry, well-ventilated area. Keep away from sources of ignition, heat, and incompatible substances such as strong oxidizers. Proper chemical storage protocols should be followed, including labeling and secondary containment, to prevent spills or accidental exposure. Store in accordance with institutional and regulatory guidelines.
    Application of Beta-Bromostyrene

    Applications of Beta-Bromostyrene in Industrial Manufacturing

    Beta-Bromostyrene serves as a critical intermediate in specialized industrial segments, with defined roles across advanced polymer synthesis, agrochemical active ingredient production, pharmaceutical building block development, and specialty material modification. As the original manufacturer, we support performance-focused supply partnerships where purity, grade consistency, and compliance are paramount from scale-up to finished product output.

    1. Specialty Polymer Manufacturing for Flame Retardant Resins

    In polymer production, downstream manufacturers employ beta-bromostyrene to introduce brominated functionalities into thermosetting resins, targeting applications demanding high flame retardancy without excessive polymer matrix plasticization. Our production provides consistent reactivity profiles for bromination reactions, supporting reliable formulation and polymer chain structure. The raw material enters the synthesis at the monomer or comonomer stage, directly affecting the resulting resin’s heat release and smoke generation properties during fire events. Material traceability supports downstream compliance with sector-specific fire safety criteria, especially for electronics housings and public transport interiors.

    Industry compliance standards

    • UL-94 Vertical Burning Test (V-0, V-1, V-2 ratings for flame retardant plastics)
    • EN 45545-2 (Railway applications – Fire protection on railway vehicles)
    • RoHS Directive 2011/65/EU (Restriction of Hazardous Substances in electrical/electronic equipment)
    • ISO 178:2019 (Plastics–Determination of flexural properties for performance evaluation)

    Typical usage ratio

    • 5–15% by weight as a functional comonomer; exact level optimized for target Limiting Oxygen Index (LOI) and balance of mechanical properties

    Downstream process integration

    • Incorporated during bulk polymerization or suspension polymerization alongside principal styrenic or epoxy monomers prior to curing

    Final product types

    • Printed circuit board laminates with flame resistance
    • Molding compounds for electrical device housings
    • Structural composite panels for passenger rail and aviation interiors
    • Fire-rated construction sealants and adhesives

    2. Agrochemical Active Ingredient Synthesis

    Beta-bromostyrene supports the synthesis of brominated phenyl intermediates for herbicide and fungicide active ingredient production. Agrochemical formulators routinely deploy this compound in Grignard or palladium-catalyzed coupling processes to produce key molecular fragments integrated into commercial crop protection agents. Strict batch-to-batch consistency and low impurity content remain essential for registration and environmental safety filings, supporting market acceptance in controlled agricultural regions. Manufacturers adjust input ratios according to the desired molecular substitution, conversion yield, and downstream purification protocols.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • US EPA Office of Pesticide Programs (OPP) guidelines
    • EU Regulation (EC) No 1107/2009 (Placing plant protection products on the market)

    Typical usage ratio

    • 0.8–1.2 molecular equivalents relative to other coupling partners; adjusted based on target intermediate purity specification

    Downstream process integration

    • Added at the aromatic coupling or bromination reaction stage preceding final derivatization and purification of formulated actives

    Final product types

    • Biphenyl herbicide intermediates
    • Brominated ketone fungicide building blocks
    • Seed treatment additive actives
    • Cereal crop pest control agents

    3. Pharmaceutical Intermediate and API Precursor Development

    Active pharmaceutical ingredient (API) synthesis routes regularly leverage beta-bromostyrene as a halogenated aryl precursor for complex benzyl or heterocyclic scaffolds, particularly in custom synthesis pipelines. Our manufacturing delivers the purity and analytical documentation necessary for downstream GMP requirements, and pharmaceutical developers incorporate these precursors at early synthesis stages to anchor key functional moieties. Recipe ratios depend on process yield and the functionality introduced during downstream alkylation, amidation, or cyclization reactions, making precise batch records critical for regulatory submissions.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • European Pharmacopoeia 11.0
    • USP General Chapter <797> (Pharmaceutical Compounding–Sterile Preparations, if relevant to further synthesis)
    • FDA 21 CFR Part 210 & 211 (cGMP for finished pharmaceuticals)

    Typical usage ratio

    • 0.95–1.05 mole equivalents as a limiting reagent for fully controlled transformations; levels fine-tuned to minimize unreacted residue in final isolation

    Downstream process integration

    • Charged during initial palladium-catalyzed cross-coupling or halogen exchange reactions that precede further elaboration toward the target API structure

    Final product types

    • Benzyl-substituted pharmaceutical intermediates
    • Pyridine or indole-based drug precursors
    • Chemical probes for drug discovery pipelines
    • Semi-synthetic active pharmaceutical ingredients

    4. Surface Modification Reagents for Advanced Coatings

    Manufacturers use beta-bromostyrene as a reactive monomer and chain transfer agent in polymeric coating modification, especially for applications where introducing brominated aromatic groups improves resistance to weathering, UV radiation, or aggressive chemical agents. The timing of feed during the polymer backbone formation and the precursor’s bromine content enable tailored surface chemistry that supports high-performance end uses, such as industrial floor coatings and marine finishings. The usage ratio correlates with performance demands for anti-corrosive and photostable characteristics, and compliance hinges on thorough migration and emissions testing, especially for near-consumer applications.

    Industry compliance standards

    • REACH Regulation (EC) No 1907/2006 (Registration, Evaluation, Authorisation and Restriction of Chemicals)
    • ISO 16000-9 (Indoor air – Emissions of volatile organic compounds from building products)
    • ASTM D6578/D6578M (Coating resistance to various cleaning agents)
    • Directive 2004/42/EC (VOC limits for decorative paints, if applicable)

    Typical usage ratio

    • 2–6% by weight in copolymer backbone; adjusted for targeted surface energy and compatibility with other functional additives

    Downstream process integration

    • Introduced during emulsion, solution, or suspension polymerization steps before dispersion and solvent blending

    Final product types

    • High-durability industrial floor coatings
    • Weather-resistant architectural paints
    • Marine protective finishes
    • Chemical-resistant tank and pipe linings
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    Competitive Beta-Bromostyrene prices that fit your budget—flexible terms and customized quotes for every order.

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    Certification & Compliance
    More Introduction

    Beta-Bromostyrene: Consistent Quality, Real Manufacturing Insight

    Unpacking the Value of Beta-Bromostyrene From a Manufacturer’s Perspective

    Every batch we produce of Beta-Bromostyrene illustrates more than chemistry—it reflects ongoing process improvement and respect for the industries relying on this compound. Beta-Bromostyrene, better known among chemists as (E)-1-Bromo-2-phenylethene (CAS No. 3416-17-7), stands out in our lineup for its demanding synthesis and the crucial role it plays in custom organic synthesis, specialty polymer research, and pharmaceutical intermediates. Our manufacturing floor has seen how even a modest tweak to the process can alter purity, color, and shelf stability, all of which matter when project timelines and downstream processing rely on predictability.

    Across years of real-world production, we’ve learned there’s no shortcut to quality with Beta-Bromostyrene. Its synthesis involves not just classical organic chemistry, but an understanding of how trace impurities can limit its effectiveness in end uses. Producers and researchers who push for high yields or process speed often end up grappling with off-color product, unstable batches, or trace halide contamination. In contrast, we’ve invested in step-wise purification and in-line monitoring, targeting a typical specification of ≥98% purity with tight control over the E/Z isomer ratio. Spot checks from our QC team regularly reveal how minor optimizations—adjusted reaction times, reagent quality, thorough distillation—directly affect the product’s radiant clarity and extended shelf life.

    What Sets This Molecule Apart

    Where does Beta-Bromostyrene fit compared to its close chemical cousins? Unlike alpha-bromostyrene, the beta isomer introduces bromo functionality further from the aromatic ring. In real usage, this shifts its reactivity. Beta-bromostyrene enables Suzuki, Heck, and Sonogashira couplings where regioselectivity is crucial. For polymer and advanced material labs, this difference dictates not just product design, but also safety profiles and waste handling. The chemistry is subtle but powerful—a misplaced bromo can derail an entire project or force costly rework. We’ve seen this firsthand when customers substitute one isomer for another under deadlines, often resulting in unexpected side products. Sharing our process notes and typical use scenarios has saved our clients cycles of troubleshooting.

    In specialty pharmaceuticals, Beta-Bromostyrene acts as more than a simple building block. Its beta position confers less steric hindrance, opening up unique cross-couplings and alkylation routes. R&D groups chasing new molecular scaffolds now request documentation right down to our HPLC traces and GC-MS profiles. Such transparency helps project leads align synthesis runs with regulatory requirements and process validation. Unlike imported off-spec equivalents that arrive with hazy documentation, our manufacturing process leaves an audit trail at every stage.

    What really drives these differences home for us is feedback from lab-scale users scaling to pilot runs. Synthesists often start with bench samples purchased through distributors, only to hit quality ceiling when moving to kilogram-scale campaigns. We don’t outsource production or repackage—everything comes direct from our reactors, with continuous monitoring and batch records open to partner review. This end-to-end control means we handle concerns before they reach the customer, whether it’s a trace impurity that would poison a catalyst or batch-to-batch color variation that complicates downstream processing.

    Manufacturing Realities: Where the Process Meets the Product

    Manufacturing Beta-Bromostyrene involves more than following reaction protocols. We focus on tight controls during bromination and dehydrohalogenation to avoid over-bromination and ring bromination, notorious for driving up purification costs and introducing unwanted by-products. Experienced operators keep a watch on reactor temperature, solvent ratios, and reagent quality—factors neglected by casual producers or traders. Each kilogram we ship has passed GLP-compliant analysis, with particular attention to the isomeric content. Differences in isomer ratio aren’t just academic; they determine coupling yields, side product profiles, and even the mechanical attributes of polymers made downstream.

    Consistency matters. A leading materials science lab once approached us after their supplier’s material choked a Pd-catalyzed cross-coupling with excessive Z-isomer content. They were losing not just money, but also critical research time. By documenting our process and reviewing historical batch data, we pinpointed the source—reactor cooling profile during the elimination step. Our corrective action solved the issue, and yield consistency improved by over 20% across all their screens. This kind of partnership only develops from deep manufacturing experience and a willingness to address process transparency head-on.

    What sometimes surprises newcomers is how small shifts in process hygiene—freshly distilled solvents, bromoacetophenone grade, dry conditions—translate to real performance gains. We keep logs tracking these parameters, since trace water or out-of-spec reagents quietly erode both yield and product stability. Bulk buyers who try to cut corners by turning to warehouse-stored reagents often come back after seeing short shelf lives or color drift in their stored material. Our practice has always leaned on proactive monitoring, not quick fixes or unnecessary after-market stabilization.

    Handling, Storage, and Real-World Applications

    With Beta-Bromostyrene, real utility comes from practical experience—storage conditions directly influence shelf life and usability in sensitive reactions. We recommend cool, dry storage not because it’s a regulatory checkbox, but from years of actual product returns that linked improper storage to yellowing or polymerization. While competitors might let product sit for months before shipping, we work on just-in-time manufacturing. This keeps inventory fresh and assures our partners that the material won’t degrade before it even leaves the loading dock.

    Usage trends also resurface time and again. Medchem groups increasingly pilot Beta-Bromostyrene for late-stage functionalization, and process chemists in specialty materials leverage its reactive handle to stitch together architectures for OLED precursors or high-performance resins. Some even reach out to compare reactivity patterns between our material and others—direct comparison of IR spectra, NMR impurities, and batch color. These insights flow both ways; feedback about unique product attributes based on user experience gets folded back into our QC routines, shaping future production.

    Customers often ask about differences in actual process yields with alternative suppliers. What we see is that subtle contamination—or inconsistent isomer ratios—can knock real-world yields down by 10–15% in complex couplings. Simply tweaking solvent grades or purification steps hasn’t closed that gap. Only by tightening all aspects of the process—from raw material selection through fractional distillation and storage under nitrogen—do we consistently meet or exceed practical yields in scaled-up operations. By focusing on these details and not chasing short-term cost savings, we’ve secured loyal clients who measure value in time saved and reproducibility, not just price per kilogram.

    Why Specifications on Paper Don’t Tell the Whole Story

    Specs sheets list purity, moisture, isomer ratio, and packaging, but the reality is that batch-to-batch consistency counts for more than any number. We find that customers who’ve worked through a few product cycles recognize the difference. For advanced intermediates, simply hitting a percentage purity won’t guarantee clean downstream chemistry. That’s why we emphasize analytical backing—HPLC, NMR, GC-MS—for each batch, keeping lines of communication open so project managers can discuss process details or request supporting data before committing to scale-up.

    Lab stories abound about surprising impurities—trace phenylacetylene or bromoacetophenone—derailing otherwise robust syntheses. Our standard process design includes targeted purification, with batch records documenting each stage. The difference has less to do with equipment size and more with a commitment to thorough checks and transparent documentation. We’ve learned from experience: unpredictability on our end becomes unpredictability for the customer, and as a result, our process control leaves little to chance.

    One of our largest pharmaceutical integrators provided clear feedback after a head-to-head trial: their yield advantage stemmed from our lower halide and water content, as confirmed by Karl Fischer and Ag/NO3 spot tests. These details barely register on many spec sheets but become obvious with live production runs. Our operation prioritizes batch release only after full analytical validation—not at a trader’s warehouse, but at the production source. With tighter certificates of analysis and direct access to manufacturing chemists, our partners shave off cycle times and tackle fewer downstream surprises.

    Safety and Environmental Responsibility Built Into Production

    Producers of reactive brominated organics, ourselves included, must navigate both internal safety protocols and regulatory requirements that evolve year to year. Beta-Bromostyrene calls for stringent vapor management and secondary containment during synthesis—not just due to its moderate toxicity, but because good practice prevents accidental emissions and cross-contamination. Throughout the plant, our vent scrubbers and solvent recycling lines operate to cut down both exposure risk and environmental footprint. Unlike smaller repackagers, we integrate waste minimization into the production design itself, not as an afterthought.

    Safety discussions also extend to end users. Handling Beta-Bromostyrene with care means more than using PPE. It’s about understanding the material’s reactivity—particularly its tendency to polymerize if left open to air or moisture. Over the years, we’ve reached out to clients who encountered issues during scale-up, often finding root causes in shipping delays or improper container sealing. We don’t shy away from these conversations. Far from being just a supplier, we document recommendations based on failed and successful storages, helping partners avoid repeating preventable mistakes.

    Our plant’s environmental audit trail serves as more than marketing. Core metrics such as solvent recovery rates, solid waste handling, and emission scrubbing are reviewed quarterly, and corrective actions flow into both documentation and day-to-day operations. Regulatory changes roll out faster than ever, and clients now expect that environmental stewardship shapes every batch produced—not just in paperwork but in measurable reductions year over year.

    Addressing Market Expectations Through Direct Manufacturing

    Beta-Bromostyrene has transformed from a niche specialty to a widely requested intermediate in custom synthesis, catalysis, and new materials development. Each shift in market demand brings lessons for any serious producer. We see how research timelines and product launches depend on predictable deliveries, stable pricing, and true-to-form product. Traders and resellers who chase the market rarely hold up when delivery deadlines loom or spec mismatches cause production bottlenecks. Our model as direct manufacturers is different—each order starts at our reactors and ships out after specification sign-off with full transparency.

    The most common request we field is for flexible batch sizes—ranging from multi-gram R&D units for startups, to multi-hundred kilo lots for established process manufacturers. Over the years, we’ve tuned our operation so we can switch between scales without introducing risk. This capacity requires experienced technicians, modular tankage, and robust supply chain management. Several of our long-term clients have relied on this adaptability during ramp-ups or periods of shifting project focus. Instead of speculating on supply, we draw from decades of process adjustment and real-time data to keep promises aligned with actual production capacity.

    Unpredictable lead times and shifting regulatory landscapes challenge even experienced buyers. Because we operate our own production lines and maintain raw material inventory, we step ahead of most fluctuations. It’s common for new customers to ask for rapid turnaround on urgent projects, often after distributors have run dry or failed to deliver on short notice. Our onsite analytics and scaled manufacturing mean we can firm up delivery timelines with greater reliability than those relying on external consolidation or ad hoc buying. This focus on ownership—not outsourcing—sets our approach apart, ensuring consistent availability and minimizing delays that disrupt R&D or production schedules.

    Collaborative Problem Solving: Beyond Transactions

    Direct manufacturer partnerships mean more than filling orders. Researchers and process engineers appreciate the opportunity to access manufacturing chemists for troubleshooting and process advice. We regularly support project teams faced with scale-up bottlenecks, changes in formulation, or unexplainable side reactions. Many such cases end with reports or revised procedures that circle back to us, proving how tight partnerships foster innovation and risk reduction.

    Learning from these ongoing relationships, we’ve embedded direct support into our workflow. Analytical data, detailed batch records, and even comparative studies between different material grades support decisions on process changes or new applications. With every inquiry, our team brings decades of production experience—not just reading spec sheets but understanding what factors drive higher conversions, fewer by-products, and stable product properties during storage or transport.

    Many clients still recall when their first Beta-Bromostyrene order—rushed, perhaps, or switching mid-project from another supplier—kept a research program on track or allowed smooth piloting at industrial scale. These experiences drive us to keep delivering more than molecules; the real value comes from shared experience and the transparency only a direct producer can offer.

    Continuous Improvement and Future-Ready Production

    Innovation demands more than technical know-how; it requires a mindset attuned to feedback, process optimization, and a willingness to challenge the status quo. Our production teams run post-batch reviews, tracking complaint trends and investing in pilot runs for new process variants. For Beta-Bromostyrene, improvements such as closed-loop temperature control and real-time analytical sampling emerged not from top-down mandates, but from conversations with users hitting bottlenecks in reactivity or scale-up.

    With the global push for higher process safety and regulatory compliance, we see client requirements shifting toward traceability, green chemistry, and life-cycle documentation. International markets now demand full documentation not just for purity, but for impurity profile, shipping stability, and even the carbon footprint per batch. We treat each of these not as hurdles but as opportunities to deepen our understanding and demonstrate ongoing value.

    Beta-Bromostyrene production will continue to evolve—smarter process analytics, better materials handling, more efficient use of resources—guided by both market trends and user input. Having direct manufacturing responsibility forces us to stay sharp, because accountability lands squarely in-house. Each improvement in yield, product stability, or transparency doesn’t just benefit us; it lifts outcomes for every lab or factory building the next breakthrough from our Beta-Bromostyrene. From benchtop to pilot plant, manufacturers who live with their process every day bring learning, trust, and partnership to each kilogram shipped.