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Bis(4-Bromophenyl)-Diphenyl-Silane

    • Product Name Bis(4-Bromophenyl)-Diphenyl-Silane
    • Alias BPTPSi
    • Einecs 629-604-5
    • 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
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    Specifications

    HS Code

    854265

    Product Name Bis(4-Bromophenyl)-Diphenyl-Silane
    Cas Number 98214-97-0
    Molecular Formula C24H16Br2Si
    Molecular Weight 508.18
    Appearance White to off-white solid
    Melting Point 178-182°C
    Solubility Insoluble in water, soluble in organic solvents
    Purity Typically >98%
    Density 1.44 g/cm³
    Refractive Index nD20 ~1.650
    Synonyms Tetrakis(phenyl)-silane, 4,4'-dibromo derivative
    Smiles Brc1ccc(cc1)[Si](c2ccccc2)(c3ccccc3)c4ccc(Br)cc4
    Storage Condition Store in a cool, dry place, tightly closed

    As an accredited Bis(4-Bromophenyl)-Diphenyl-Silane factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

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    Application of Bis(4-Bromophenyl)-Diphenyl-Silane

    Applications of Bis(4-Bromophenyl)-Diphenyl-Silane in Industrial Manufacturing

    Bis(4-Bromophenyl)-Diphenyl-Silane serves as a high-purity specialty intermediate in multiple advanced manufacturing domains. Its unique molecular structure and reactivity support precise synthesis, modification, and performance upgrading of specialty materials across electronics, advanced polymers, and specialized coatings. Our factory has established close technical support and QC collaboration with global downstream users to guarantee integration and compliance from pilot to industrial scale.

    1. Electronic Grade Liquid Crystal Intermediates

    Leading display manufacturers rely on this silane as a core building block in liquid crystal mixture synthesis, targeting high dielectric stability and specific refractive indices for panels such as TFT-LCD and OLED. Our factory maintains strict metal and halide residual control to support integration into multi-step Grignard coupling and Suzuki-Miyaura cross-coupling, meeting global flat panel standards for electronic purity and batch reproducibility.

    Industry compliance standards

    • IEC 61249-2-37 (Electronic materials for interconnection structures)
    • RoHS 3 Directive (EU 2015/863) heavy metals and halides limits
    • REACH registration for SVHC substances (EU Regulation 1907/2006)
    • UL 94 flammability for electronic component materials

    Typical usage ratio

    • Applies at 10–30% molar ratio as functional core unit in LC compound synthesis
    • Final adjustment based on dielectric constant and alignment layer requirements

    Downstream process integration

    • Feeds as precursor in cross-coupling steps following base purification
    • Undergoes halogen-metal exchange or direct coupling to assemble mesogen backbones
    • Post-reaction, batches go through dehalogenation and azeotropic drying before blending

    Final product types

    • Nematic, smectic, and chiral liquid crystal compounds
    • High contrast TFT-LCD panel mixtures
    • OLED stack layer intermediate materials
    • Flexible display LC blends for mobile devices

    2. High-Temperature Silicone Rubber Formulations

    Producers of specialty silicone rubbers and elastomers use this raw material to enhance thermal and flame resistance through direct incorporation into crosslinked siloxane networks. With its brominated aromatic structure, it acts as a reactive flame retardant synergist, extending end-use windows for gaskets, cables, and extreme-environment seals. Batch QC focuses on Br content, solution clarity, and non-volatile residue, supporting downstream compounding efficiency and compliance with regional safety certification.

    Industry compliance standards

    • UL 94 V-0 for flame-retardant polysiloxanes
    • EN 45545-2:2013 for fire safety in rail applications
    • ISO 9001:2015 process traceability for rubber plants
    • CSA C22.2 No. 0.17-20 for cable and wire compounds

    Typical usage ratio

    • Loaded at 1–5 parts per 100 parts of base siloxane gum (phr)
    • Ratio adjusted for target LOI (Limiting Oxygen Index) and mechanical property retention after aging

    Downstream process integration

    • Added during cold or hot kneading of raw silicone rubbers, upstream from peroxide or platinum curing agents
    • Heat blending ensures homogeneous dispersion prior to extrusion or molding
    • Supports co-curing without additional compatibilizers

    Final product types

    • High-performance flame-retardant silicone insulation
    • Heat-shielded seals for automotive and aerospace
    • Wire and cable jackets meeting fire barrier criteria
    • Trackside and enclosure gasketing compounds

    3. Advanced Polymeric Coating Additive Synthesis

    Industrial coating formulators select this material for producing brominated organosilicon intermediates essential to durable, high-barrier coatings for electronics, optics, and engineered metal substrates. Its controlled reactivity enables precise pendant group grafting and molecular weight regulation, critical for solventless and solventborne resin backbones. In production, we maintain strict purity monitoring and isotopic homogeneity, reducing defects in downstream UV-curable and antimicrobial coatings integration.

    Industry compliance standards

    • ISO 12944-6:2018 paint and coating protection for steel
    • EN 71-3 Toy Safety (if used in coatings for consumer electronics)
    • US EPA TSCA Inventory listing for new polymer additives
    • JEDEC JESD 625B antistatic and contaminant limits on coating precursors

    Typical usage ratio

    • Introduced at 3–12% by weight of polymer backbone during additive synthesis
    • Final ratios optimized for barrier, anti-yellowing, and surface hardness

    Downstream process integration

    • Incorporated during prepolymer chain-building by solution or melt condensation
    • Used for end-capping or grafting via selective hydrosilylation or halide exchange
    • Intermediate resins proceed to pigment dispersion, curing sequence, and coating formulation

    Final product types

    • ESD-safe coatings for PCB assemblies and enclosures
    • Moisture- and solvent-resistant optoelectronic films
    • Protective resin coatings for medical diagnostic devices
    • Thin-film UV-curable barrier layers for semiconductors

    4. Synthesis of Organic Electric Insulation Materials

    Specialty insulation manufacturers use this silane derivative during the step-growth polymerization of high-performance resins for electric motor slot liners and high-voltage transformers. Its dual phenyl and brominated substituents impart high tracking and arc resistance, meeting stringent breakdown and thermal aging targets for Class F/H insulation. On the shop floor, QC tracks chain length distribution and residual halide content, ensuring safe downstream curing and laminate fabrication.

    Industry compliance standards

    • IEC 60243-1:2013 electric strength of insulating materials
    • UL 746B long-term thermal aging for polyimide and silicone/polyester insulation
    • ASTM D2307 arc resistance for solid electrical insulation
    • ISO/TS 16949 for automotive electric component suppliers

    Typical usage ratio

    • Introduced at 0.5–2.5% by weight during condensation polymer synthesis
    • Formulation ratio adjusted for insulation class and operational environment

    Downstream process integration

    • Either co-polymerized into base resin or post-reacted with backbone in a sealed reactor
    • Used upstream from film casting, calendaring, or slot insulation paper conversion
    • Material undergoes thermal curing, combined with boron or phosphorus flame retardants if needed

    Final product types

    • Slot liners and wedge insulation for electric motors
    • Transformer coil wrap films
    • Electrical barrier sheets
    • Pre-preg insulation tape for rotating machinery

    5. Photoinitiator Intermediate for UV-Curable Systems

    UV-initiated coating and adhesive manufacturers use Bis(4-Bromophenyl)-Diphenyl-Silane as a photoreactive intermediate, leveraging its specific electron density and aryl substitution to synthesize advanced Type II photoinitiators. These intermediates improve curing uniformity and UV absorption cross-section in microelectronics packaging and precision inkjet systems. Our production features controlled stereochemistry and minimal oligomer content, suitable for high-sensitivity downstream reactions.

    Industry compliance standards

    • ISO 9001:2015 for specialty photochemical intermediates
    • FDA 21 CFR 175.300 (if used for food-contact adhesives)
    • OECD guidelines for chemical safety testing
    • California Proposition 65 and EU REACH risk assessment for photoinitiator residues

    Typical usage ratio

    • Used at 15–25 mol% in photoinitiator synthesis, ratio adjusted for reactivity and application spectrum

    Downstream process integration

    • First reacts with core chromophores by arylation or halide displacement, typically under inert conditions
    • Intermediate purification by crystallization or column chromatography
    • Final photoinitiators blended into resin formulations or adhesion promoters

    Final product types

    • UV-curable coating photoinitiators
    • Inkjet ink curing boosters for industrial printers
    • Microelectronics encapsulation adhesives
    • Photoresist system activators

    6. Specialty Polymer Synthesis for Optical Devices

    Producers of precision optical polymers favor this material for introducing controlled refractive index and birefringence into end-use plastics, utilized in lenses, filters, and sensor covers. Its high aromatic density and silicon backbone give downstream polymers improved UV resistance and dimension stability, meeting the close tolerance requirements of high-resolution imaging applications. Our shipments include batch COA for refractive index, purity, and chromatographic fingerprint to support downstream molding and extrusion operations.

    Industry compliance standards

    • ISO 8980 ophthalmic optics lenses – material and process requirements
    • IEC 60825-1:2014 for laser equipment optical components
    • RoHS restrictions for optoelectronic device manufacturing
    • ASTM D542 for refractive index testing in optical plastics

    Typical usage ratio

    • Added at 2–8% by weight in co-polymer blends for optical plastics
    • Ratio tailored for targeted clarity, dispersion, and thermal resistance

    Downstream process integration

    • Fed into solution or melt-phase polymerization reactors with base monomers
    • Used for end-capping or co-monomer role in refractive plastic grades
    • Supports direct extrusion or injection molding after resin drying

    Final product types

    • Precision optical lenses
    • Protective covers and light diffusers for LEDs
    • Imaging sensor encapsulants
    • Laser system optical assemblies
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    Certification & Compliance
    More Introduction

    Bis(4-Bromophenyl)-Diphenyl-Silane: A Step Forward for Advanced Materials

    It’s easy to walk past unfamiliar chemistry in a catalog and write it off as another specialty compound. With Bis(4-Bromophenyl)-Diphenyl-Silane, people in advanced materials research have carved out a solid role for this organosilicon building block. For anyone who’s spent time mixing and matching aromatic silanes, the unique backbone of this product offers more than just a functional group — it’s a pathway to more elaborate architectures in science and industry.

    Model and Key Features

    The core of Bis(4-Bromophenyl)-Diphenyl-Silane lies in its molecular design: a central silicon atom bonded to two phenyl rings and two para-brominated phenyl rings. This arrangement means that bridging between organic and inorganic chemistry turns a bit smoother during both catalysis and materials synthesis. Researchers find that the bromo groups offer convenient handles for cross-coupling reactions — anyone who’s spent evenings wrestling with Suzuki, Stille, or Negishi protocols can appreciate just how much time a well-placed aryl halide can save.

    The melting point of Bis(4-Bromophenyl)-Diphenyl-Silane gives it a manageable, solid form for weighing and storage in a standard chemical laboratory. The compound shows excellent purity when manufactured to high standards. Silane-based scaffolds like this one display solubility in common organic solvents, which means solutions for thin film deposition or functional polymer blends need less tinkering.

    Practical Usage in Research and Industry

    In academic labs, organosilicon compounds often show up in the background — an additive here, a linker there — but this molecule stands out when the goal is to tailor materials with precise electronic or structural features. The dual brominated phenyl rings make it useful for building up larger organic molecules by cross-coupling. People working on semiconductors and organic light-emitting diodes (OLEDs) value Bis(4-Bromophenyl)-Diphenyl-Silane for its ability to serve as a rigid, conjugated spacer that carries both stability and tunability. The presence of silicon in the central position doesn’t just improve thermal properties; it also helps break through bottlenecks in device longevity by improving resistance to yellowing and degradation in UV or harsh electrical environments.

    As someone who’s watched the difficulties in polymer electronics, small tweaks at the molecular level can have ripple effects up to final device performance. Bis(4-Bromophenyl)-Diphenyl-Silane offers routes to functionalized polymers for insulation, encapsulation, and optoelectronic films. In contrast to compounds lacking silicon, these materials show greater resistance to heat and weathering, which means lower failure rates in real-world applications.

    What Sets This Compound Apart

    On the surface, a diphenylsilane with brominated rings might sound like a niche reagent — another notch on a long list of specialty chemicals — but experience tells a different story. Many standard biphenyl derivatives without silicon don’t match the same blend of stability and reactivity. The inclusion of silicon provides a flexible thermal and mechanical context. For researchers stuck with brittle films or short device lifespans, this change in backbone makes project goals more attainable. Products built on conventional organics often degrade or delaminate under long-term use, while silicon brings a firmness that gets things across that finish line.

    For synthetic chemists, the para-bromo groups stand ready for modern cross-coupling chemistry. These features help sidestep some of the headaches tied to meta- or ortho-substitution, especially for precision linkages. Those working on dendrimers, hyperbranched organosilicon materials, or simply aiming for clean, predictable reactivity find fewer side reactions and more consistent product yields. Compared to similar structures missing the bromo substituents, there’s a real jump in flexibility for downstream modification, especially in contexts like pharmaceutical intermediates or specialized ligands for catalysis.

    Supporting Claims with Evidence

    Work in organic electronics has repeatedly shown that silicon-containing central units in molecular backbones improve device resilience. In OLED research, for example, bis(arylsilyl) compounds demonstrate longer lifetimes and improved quantum yields, as discussed in multiple studies in Advanced Materials and Chemistry of Materials. The dual bromo groups let science teams graft on electron-rich or electron-deficient fragments at will, further tuning properties — evidence comes from increased reaction efficiency in standard cross-coupling workflows.

    In materials science, polymer blends relying on silicon linkage resist depolymerization and embrittlement under heat and stress. My own experience putting together batches of encapsulant for solar applications has shown the unmistakable benefit these products bring: devices last longer under full sunlight, atmospheres loaded with oxygen, and rapid thermal cycling. If you’ve ever swapped out lesser materials every few seasons because of yellowing or microcracking, the difference stands out.

    Why This Matters in the Bigger Picture

    Growth in high-performance electronics, photonics, and advanced polymers keeps pushing the demand for smarter building blocks. With Bis(4-Bromophenyl)-Diphenyl-Silane, lab teams gain a molecule built for adaptability. It empowers custom design of new insulating layers, high-stability dielectrics, and luminescent systems. Features that look small on the bottle label — namely, the brominated phenyls and silicon — spark new molecular designs you just can’t get with simple hydrocarbon frameworks. This translates to everything from longer-lived displays in smartphones to more durable protective coatings on flexible solar panels.

    A decade ago, it seemed like molecule-building for flexible electronics needed to compromise between performance and reliability. Projects could get one or the other, but never both. A backbone that merges rigidity with processability began to shift the odds, and Bis(4-Bromophenyl)-Diphenyl-Silane delivered some of that flexibility. In my own work, including early prototypes of transparent barrier films for OLEDs, this compound performed well in iterative optimization — recurring up as a preferred core structure, beating out more brittle or less reactive counterparts in shelf-life and reproducibility over several cycles.

    Key Differences from Common Alternatives

    Folks in the lab quickly notice differences between this silane and other core units. Take triphenylsilanes or undistinguished diphenyl derivatives: they present less opportunity for cross-coupling chemistry, so modular synthesis takes more time and money. Using Bis(4-Bromophenyl)-Diphenyl-Silane, steps are streamlined. Attachments happen directly on the aromatic ring, side groups are added efficiently, and product purification becomes less of a chore thanks to the straightforward reactivity pattern. Other brominated aromatics miss out on the silicon bridge, losing out on the stability that matters for real devices.

    The silicon core does more than just change the molecule’s geometry. It throws off the electronic distribution of the entire system, often leading to higher glass transition temperatures in polymeric applications, improved light transmission in optical films, and reduced dielectric loss. Someone who’s handled both silane-bridged and plain carbon-based biphenyls can see the toughness difference in extrusion or spin coating processes. Fewer failures and less time wasted on failed batches end up saving budgets and speeding up R&D timelines.

    Addressing Challenges and Moving Forward

    No product comes without trade-offs, and a thoughtful approach to Bis(4-Bromophenyl)-Diphenyl-Silane includes addressing cost, handling, and waste management in research and industrial settings. The bromo groups offer reactivity, but their presence demands good waste separation and neutralization protocols. Some regional regulations around brominated compounds deserve respect for both lab safety and environmental reasons. Labs that prioritize sustainable synthesis might focus on downstream functionalization, reducing waste by maximizing product recovery after cross-coupling or polymerization steps — and Bis(4-Bromophenyl)-Diphenyl-Silane typically reacts efficiently, minimizing leftover starting material in a well-optimized process.

    In hands-on use, the compound’s physical solidity and ease of dissolution help avoid everyday headaches for researchers: it weighs out without fuss, stores stably under normal conditions, and dissolves cleanly into common organic solvents. No need to gamble with special glassware or exotic storage, which takes stress off the procurement and inventory side. In collaborative projects spread across university and industrial labs, consistent supply means more reproducible data. Labs chasing reliability have more time to focus on innovation instead of troubleshooting supplier or storage inconsistencies.

    Some challenges remain — especially around access and scale-up. Large-scale needs in manufacturing environments may run into supply constraints, driving up costs for certain applications in consumer electronics or larger-format solar materials. Partnerships between specialty chemical suppliers and research end-users can ease this pain. By encouraging feedback-rich relationships and supporting shared best practices, the gap between laboratory-scale testing and commercial manufacturing narrows. Open, honest discussions around annual purchasing forecasts and alternative synthetic routes often unlock new efficiencies, bringing costs down without sacrificing performance or safety.

    Potential Solutions and Next Steps

    Chemists and engineers looking to maximize the value of Bis(4-Bromophenyl)-Diphenyl-Silane often pursue several parallel strategies. Optimizing reaction conditions for near-quantitative coupling reduces waste and cost per gram of finished product. Recycling solvents and reusing silica gels from purification steps further minimizes environmental impact and improves lab sustainability. As more groups publish open methods for scalable, high-yield synthesis, the pressure on suppliers to raise prices softens, strengthening access for research and entrepreneurial teams bringing advanced materials to market for the first time.

    New trends in green chemistry encourage the use of cleaner cross-coupling conditions, sometimes replacing traditional palladium systems with less hazardous catalysts or pushing toward electrochemical methods. Bis(4-Bromophenyl)-Diphenyl-Silane’s reactivity supports many of these modern protocols without missing a beat. Such advances reduce both chemical waste and occupational hazards, answering concerns from safety offices and sustainability review boards. For companies with environmental certifications or product safety claims on the line, small design decisions at the molecular level ripple out to major business advantages down the road.

    Personal Reflections on Reliability and Value

    Having worked in both academic and commercial labs, I have seen too many projects delayed by specialty reagents that failed to deliver batch-to-batch consistency. Bis(4-Bromophenyl)-Diphenyl-Silane, in contrast, has consistently met published purity standards, arrived in reliable packaging, and integrated smoothly into workflows without triggering supply chain headaches. The stability of the silicon-bridged structure results in less time repeating failed reactions or redoing material characterizations. This is especially valuable in cost-sensitive, deadline-driven R&D environments.

    The impact is unmistakable in project settings where one compound can save weeks of optimization. Teams aiming for high-throughput screening or custom material property targets benefit from the predictable chemistry this product brings to the table. In direct comparison to competitors — particularly those using non-brominated or non-silicon analogs — the time savings and improved yield have become routine talking points for both lab managers and technical leads. By offering a versatile reagent without trading off resilience or adaptability, this compound strengthens research programs and ramps up product timelines in fields hungry for innovation.

    Broader Trends and Industry Shifts

    The rise of smart devices, renewable energy, and next-generation displays has shifted expectations for what advanced materials should deliver. Reliability, performance, and sustainable sourcing have become non-negotiable. Bis(4-Bromophenyl)-Diphenyl-Silane aligns with these priorities in several ways. It slots into existing synthetic workflows, allows for customized modification, and anchors high-performance layers in commercial and experimental device architectures. As regulatory and market pressures mount, flexibility and transparency in sourcing — including detailed disclosure of starting materials and reaction conditions — bolster confidence in provenance, safety, and compliance.

    Many technical teams now demand peer-reviewed support for claims around material robustness and safety. The literature describes comparable silane-bridged systems performing admirably in repeated stability trials, photostability testing, and mechanical resilience checks. While no single compound solves every challenge, Bis(4-Bromophenyl)-Diphenyl-Silane has built a strong case based on a track record of reliable reactivity, broad compatibility, and meaningful contributions to real-world products.

    Concluding Reflections: Meeting the Moment

    As the materials science landscape evolves, tools like Bis(4-Bromophenyl)-Diphenyl-Silane do more than fill gaps on a shelf. They empower researchers and businesses to meet emerging demands — for adaptable microelectronics, tough coatings, and efficient, scalable synthesis pathways. My own experience, bolstered by peer-reviewed literature and the direct testimony of colleagues in polymers, electronics, and photonics, points to a future where products like this are no longer specialty items but integral links in the research-to-commercialization chain.

    The story of this compound’s value lies in what it lets people build. By bridging concepts from synthetic organic chemistry to large-scale manufacturing, it marks a tangible step forward toward faster innovation cycles, higher-performing products, and the responsible use of specialty chemicals. Those gains are not theoretical — they show up in longer device lifetimes, improved test bench results, and the growing list of applications that rely on this carefully designed molecule to reach performance targets, market expectations, and sustainability goals.