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HS Code |
182045 |
| Chemicalname | Benzyl Bromide |
| Casnumber | 100-39-0 |
| Molecularformula | C7H7Br |
| Molarmass | 171.04 g/mol |
| Appearance | Colorless to yellow liquid |
| Boilingpoint | 201 °C |
| Meltingpoint | -3 °C |
| Density | 1.438 g/cm³ |
| Solubilityinwater | Insoluble |
| Flashpoint | 76 °C |
| Refractiveindex | 1.579 |
| Odor | Pungent, irritating |
| Vaporpressure | 0.2 mmHg (20 °C) |
| Synonyms | α-Bromotoluene, Benzenemethyl bromide |
| Unnumber | 1737 |
As an accredited Benzyl Bromide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | A 500 mL amber glass bottle, sealed with a Teflon-lined cap, labeled "Benzyl Bromide," with hazard and safety warnings. |
| Shipping | Benzyl Bromide should be shipped in tightly sealed containers, away from moisture and incompatible substances. It must be packaged according to hazardous materials regulations, clearly labeled, and transported with appropriate documentation. The shipment should be handled by trained personnel using protective equipment to prevent leaks, spills, or exposure during transit. |
| Storage | Benzyl bromide should be stored in a tightly closed, chemically resistant container, in a cool, dry, and well-ventilated area away from direct sunlight. It must be kept away from incompatible materials such as strong oxidizers, strong bases, and moisture. Proper labeling and secure storage in a designated corrosive or hazardous chemical cabinet are essential to prevent accidental exposure and reaction. |
Applications of Benzyl Bromide in Industrial ManufacturingBenzyl bromide is a key chemical intermediate processed at scale for diverse sectors requiring selective benzylation and alkylation functions. As original manufacturers, we supply material meeting stringent industrial and regulatory requirements for high-purity applications. Below, we describe principal downstream application scenarios, compliance references, and integration details from industrial partners. 1. Active Pharmaceutical Ingredient (API) SynthesisPharmaceutical manufacturers utilize benzyl bromide for introducing benzyl protective groups during small-molecule synthesis, particularly in penicillins, cephalosporins, and other β-lactams. The controlled benzylation steps occur under GMP-compliant closed systems, minimizing contamination and ensuring batch homogeneity. Exact reaction conditions, such as organic solvent and reactor charging sequence, depend on the desired intermediate and pharmacopoeia monograph requirements. Benzyl bromide allows for precise functional group protection needed for regulated multistage synthesis compliant with international drug master files. Industry compliance standards
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2. Industrial Quaternary Ammonium Compound ManufactureProducers of quaternary ammonium compounds employ benzyl bromide as a benzylating agent for tertiary amines, particularly in surfactant and disinfectant manufacturing. The reaction proceeds via nucleophilic substitution, typically in batch or semi-batch glass-lined reactors with automated temperature control and nitrogen blanketing to limit side reactions. Careful dosing protocols maintain reaction safety, with product purification by continuous phase separation and vacuum distillation. Material purity and residual free bromide must align with specific regulations for downstream biocide or personal care chemical approval. Industry compliance standards
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3. Specialty Fragrance and Flavor Chemical SynthesisFlavor and fragrance compound manufacturers select benzyl bromide for introducing benzyl moieties into aromatic alcohols, phenols, and carboxylic acids via nucleophilic substitution under anhydrous conditions. Reaction vessels are maintained under inert atmosphere, and catalysts such as potassium carbonate or phase-transfer agents facilitate high-yield conversions. Precision in addition rates and temperature profile assures compliance with food additive regulations and IFRA standards. Trace purities and allergen labeling require strict process control, which we support through validated supply and documentation. Industry compliance standards
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4. Agricultural Fungicide Intermediate ProductionCrop protection chemical manufacturers rely on benzyl bromide as a critical alkylating agent in the synthesis of specific systemic and contact fungicide intermediates. Its use facilitates selective introduction of benzyl groups on heteroaromatic rings, often in multi-stage synthesis involving condensation or cyclization. Plant safety protocols and closed handling systems are mandatory to control operator exposure and ensure regulatory limit adherence for hazardous intermediates. Residual process impurities and product traceability remain closely monitored to meet international agricultural chemicals registration requirements. Industry compliance standards
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5. Polymer Crosslinking and Resin ModificationPolymer and resin formulators incorporate benzyl bromide for benzyl functionalization and as a mild cross-linking agent during specialty resin synthesis, notably for ion-exchange and analytical applications. The benzylation process proceeds under anhydrous, catalyzed conditions in closed reactors, allowing for controlled integration with styrenic or acrylic monomers. Process analytics, including IR verification, ensure uniform substitution and optimal performance in final resins. Material traceability, particle size distribution, and free bromide content are documented to support consistency in downstream extrusion or bead coagulation steps. Industry compliance standards
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People often ask, “What’s unique about making Benzyl Bromide compared to other chemicals?” Coming straight from where this compound takes its shape—in the reaction vessels and fractionation towers—we see daily how this liquid plays a versatile role in manufacturing and research. Most will recognize Benzyl Bromide as a colorless to slightly yellow liquid with a powerful, sharp odor, but for us, each batch reflects careful control and hands-on experience. Its chemical formula is C7H7Br, with a purity we usually maintain above 99%. Every lot comes from toluene and bromine in a strictly anhydrous environment, since water presence can lead to hydrolysis and a drop in yield. Even small lapses in process rigor show up quickly, both in the product quality and the mood on the shop floor.
To us, Benzyl Bromide isn’t just a commodity reagent. Every step, from drawing raw materials to packaging, means working with a substance that responds sharply to changes in temperature or contamination. Our teams developed methods over the past decade to ensure batches leave the plant meeting a consistent, high standard. Measurement of specific gravity and refractive index forms only the start. We focus on ensuring minimal formation of dibenzyl ether or other byproducts, since even slight impurities can interfere with downstream synthesis. Superficially, Benzyl Bromide looks similar to other benzyl halides like Benzyl Chloride or Benzyl Iodide. Yet the bromide version stands out in both its reactivity and applications: it alkylates much more efficiently than the chloride, due to a better leaving group, while costing and handling risks sit below those of the iodide.
Experience teaches that not every product used in a synthesis is benign. Benzyl Bromide stands among the more hazardous agents handled in our facilities; its lachrymatory effects can be intense, bringing discomfort if even trace vapors escape into work zones. Standard triple filtration, scrubber units, and closed transfer systems didn’t appear overnight. Hard-earned lessons shaped these safeguards. Decades ago, before advances in local containment, plant personnel faced avoidable exposures, and the local environment ran higher risk. Tight process integration and up-to-date engineering controls help us manage these risks today. All operators learn protocols from basic PPE to spill neutralization. Emphasis on daily vigilance pays off both in worker safety and ensuring no product loss due to leaks or runaway reactions. Safety data sheets don’t capture the real sense of respect—and caution—that surrounds Benzyl Bromide in the plant.
Once outside the controlled zone, Benzyl Bromide’s effects on environment can’t be ignored. Awareness of waste streams dates back several decades, but today our liquid and gaseous emissions get treated with care. Regular testing for brominated organics in wastewater confirms compliance with discharge limits. Many cycles involve careful extractions and adsorption units, rather than relying on open evaporation or simple drums. The danger of benzyl bromide vapor is well known, so all vent gases pass through alkaline scrubbing towers before release. This is no afterthought or regulatory burden—it reflects a practical understanding: what escapes can come back to haunt the community.
Benzyl Bromide finds its main use as an alkylating agent in organic chemistry, where it replaces hydrogen with a benzyl group. Just as on the shop floor, chemists in research and industry notice the marked difference in results when using Benzyl Bromide versus Benzyl Chloride. The higher reactivity allows users to run milder conditions, often shortening reaction times and minimizing byproduct formation. In pharmaceutical intermediates, this reactivity translates to better yields and cleaner isolations, especially when synthesizing benzylated amines or esters. The efficiency of bromide’s leaving group means less waste of expensive base or nucleophile during alkylation steps. Unlike some other benzyl derivatives, buyers seek Bromide when reaction rate matters more than avoided cost or when more sluggish counterparts would stall.
In our experience, downstream users working on dyes, fragrances, and agrochemicals also choose Benzyl Bromide for similar reasons. It acts as an intermediate step in the construction of benzylic ethers and esters that define complex molecules in these sectors. Some projects, especially those involving industrial coatings and quaternary ammonium compounds, benefit from the unique balance between reactivity and handleability. Benzyl Bromide’s boiling point—around 201°C—makes it easier to separate by distillation after reaction compared to heavier halides. On the global stage, spikes in toluene or bromine pricing may shift demand patterns between Benzyl Chloride, Bromide, and Iodide, but the unique synthesis space of Benzyl Bromide sustains steady interest from specialty chemical producers.
Many clients ask what sets Benzyl Bromide apart from Benzyl Chloride. Chemistry professionals expect reactivity levels to differ based on halide leaving group properties. Once inside a reaction flask, Benzyl Bromide almost always delivers higher yields in nucleophilic substitution or alkylation steps. This attribute offers a genuine edge for sensitive pharmaceutical syntheses or for processes that can’t tolerate lingering starting material. Process mass intensity comes out lower, since one gets more product per input of raw materials and solvents. Compared to Benzyl Iodide, Benzyl Bromide offers a practical balance: it’s more stable, less prone to light-induced decomposition, and cost-effective for larger scale manufacturing.
History also plays a part. Over the years, countless research labs and pilot plants discovered the pitfalls of scaling up with Benzyl Iodide, whose volatility and instability pose safety challenges. Benzyl Chloride persists as a workhorse for commodity and bulk intermediates, but when selectivity, speed, and downstream cleanup matter, Benzyl Bromide wins out. Many older syntheses were developed around whichever halide was cheapest or easiest to store. Today, process chemists weigh the total cost of waste disposal, safety risk, and purification when choosing among these three, often tipping the balance toward Bromide. We see this throughout our own production planning, market forecasts, and after-sale client support.
Our approach to Benzyl Bromide production blends old chemical know-how with continuous technical updates. Aging glass-lined reactors gave way to stainless steel equipment fitted with high-precision dosing pumps for bromine. Early on, we noticed that mechanical seals and packing materials can degrade rapidly on contact with bromine vapor. Rather than accept frequent shutdowns, we sourced gaskets and seals from suppliers specializing in halogen-resistant materials. Each pump and line undergoes routine inspection; overlooked wear can mean leaks, wasted money, and downtime. Exothermicity of the synthesis demands real-time monitoring: an uncontrolled heat spike threatens both the batch and the crew on shift.
Quality assurance matters at each stage. While the product’s main specifications focus on assay and moisture, end-users value a low level of secondary haloalkylbenzenes, predictable refractive index, and minimal color. Analytical teams draw samples at each plant header, running checks with modern GC-FID and titration methods. We noticed years ago that a good operator can smell when a batch runs clean, but we never rely on the nose alone. Frequent recalibration and overlap in QC roles keep staff from becoming complacent, and auditors from client companies occasionally walk our line to ensure standards don’t slip. As market needs shift, we tweak our synthesis: increasing throughput while keeping impurity levels tightly controlled.
Sustainability interests our facility just as much as any new process. Recovering spent halides and energy integration within the plant have grown in focus since the early 2000s. Aside from regulatory drivers, nobody wants to see costly reactants going into storage or waste. Colleagues in waste treatment discovered that carefully adjusting pH and redox conditions breaks down trace benzyl bromide before it leaves the plant for external treatment. This careful recycling doesn’t just bring satisfaction; it ensures continued acceptance for both workers and the community nearby. Benchmarking against regional and international manufacturers, we see this effort as one element that keeps our business resilient through tight markets or rising overheads.
Markets demand flexibility. Seasoned plant managers remember shifts in demand from year to year—sometimes driven by blockbuster pharmaceutical drugs, other times by regulatory changes in agrochemicals or supply chain disruptions. Planning lines for Benzyl Bromide means hedging against both rising raw material costs and client forecasts. For instance, spikes in bromine or toluene availability hit both cost structure and capacity. Savings occur where our teams manage inventories tightly, reduce downtime, and pivot to alternate grades as customer needs evolve. Several long-standing clients request custom packs and tailored purity for pilot or regulatory requirements—this isn’t a favor, it’s a way to keep business stable over time.
Our technical service team works hand-in-hand with operations: if a client runs into unexpected byproducts, we help dig into root causes and explore alternative process routes. If a formulation switches from Benzyl Chloride to Benzyl Bromide, the change needs more than just a shift in the purchasing order. We assist in adjusting solvent systems, base equivalents, or temperature steps to maximize yield and minimize downstream work. Close feedback loops between users and plant make both sides more effective. A tradition of transparency helps maintain trust and keeps product complaints to a minimum—not through accident, but through a real willingness to hear bad news, investigate, and fix problems early.
As regulations toughen, it pays to stay ahead. Authorities scrutinize the handling and documentation of benzyl compounds closely due to their potential misuse, and each shipment reflects our record of compliance. From raw material traceability to final shipping logs, every detail lines up with international standards. Document control systems receive more investment each year, not just to satisfy audits but to prevent costly holdups at borders and in downstream operations. Our teams now interface routinely with compliance officers and legal counsel, drilling on both the letter and the spirit of the law.
Training goes beyond box-ticking. From onboarding through regular drills, operators rehearse not only routine operations but response plans for accidental release, health exposure, and environmental containment. It reduces downtime, boosts morale, and sharpens skill across the plant. Retaining senior staff who remember when regulations were far looser helps ground the younger workforce, reminding everyone the rules exist for sound reasons. We include takeaways from near-misses in meetings, converting talk into better procedures for both Benzyl Bromide and byproducts.
Any chemical plant depends on the health and buy-in of its people. Working around Benzyl Bromide, we’ve learned that prevention trumps everything else. Employee health screenings and routine air monitoring picked up pace after local doctors flagged unexplained eye and respiratory symptoms years ago. Our managers bought in through direct experience: if absenteeism spikes, output drops, and that cuts into both bonuses and morale. Safety improvements—extra fans, local scrubbers, improved PPE—paid for themselves in fewer incidents and greater workforce stability.
Living next to production facilities invites public scrutiny. We prioritize regular communication with neighbors and local officials about plant operations and safety measures. Open days and site tours allow visitors to see containment systems and monitoring in real-time, demystifying what “hazardous chemicals” really means. It’s not about hiding the risks, but about showing consistent, reliable control over them. We also participate in local emergency drills, helping the community’s first responders plan for worst-case scenarios—even if such events remain unlikely. Over time, trust builds not from grand pronouncements, but from steady, evidence-backed stewardship.
No engineer or plant worker approaches Benzyl Bromide lightly. Training, hands-on skill, and steady nerves define the difference between smooth operations and costly incidents. The compound’s potent properties teach respect every day: open a vessel too quickly or ignore a minor gasket leak, and discomfort or injury follows quickly. These lived realities shape our culture and approach more than any guideline or outside summary. Staff turnover impacts every KPI, making training and retention more valuable than automation alone can offer.
We also invest time in continuous learning: when academic research points to safer or more efficient synthetic routes, we trial them on the bench and at pilot scale before adopting them wholesale. Operational tweaks in distillation or waste reduction turn into line-wide updates after rigorous internal trials. Colleagues regularly participate in industry working groups, both to keep up with best practices and to influence the direction of future regulations and standards. The lessons we share come directly from long shifts, troubleshooting on the plant floor, and collaborating with both customers and regulators to raise the bar on what quality and safety can mean.
Chemical manufacturing constantly adapts to outside demands—from supply volatilities, portfolio shifts, to advances in green chemistry. Benzyl Bromide may not draw attention the way newer specialty chemicals or biodegradable surfactants do, but it holds a solid place in synthesis for pharmaceuticals, agrochemicals, and fine chemicals. Our production strategy reflects both the realities of bulk operations and the growing interest in more sustainable manufacturing. For some clients, that means batch purity; for others, traceability of every drum. Every staff member—from incoming QC to night-shift maintenance—knows their role counts in maintaining both output and market reputation.
The future for Benzyl Bromide will hinge on sustainability. Engineers and managers look for further reductions in energy use, VOC emissions, and waste. We track benchmarks not just for compliance, but to push improvements ahead of the minimum requirements. Industrial symbiosis—reusing byproducts at other sites or swapping energy flows with nearby operations—forms the next frontier. It isn't enough to simply produce a good product; the wider impact, from raw materials to post-consumer waste, matters more each year. Sharing our journey publicly, faults and all, allows others to learn and build better practices. That openness supports the next generation, who will likely face even stricter standards, and need the collective memory of our industry’s successes—and mistakes—to navigate what comes next.