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HS Code |
663080 |
| Chemical Name | Methylbenzyl Bromide |
| CAS Number | 585-71-7 |
| Molecular Formula | C8H9Br |
| Molecular Weight | 185.06 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Boiling Point | 218-220°C |
| Melting Point | -36°C |
| Density | 1.36 g/cm³ |
| Solubility | Insoluble in water, soluble in organic solvents |
| Flash Point | 93°C |
| Refractive Index | 1.565 |
| Purity | Typically ≥98% |
| Storage Conditions | Store in a cool, dry place away from light |
| Synonyms | α-Bromotoluene, Benzylmethyl bromide |
As an accredited Methylbenzyl Bromide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Methylbenzyl Bromide is packaged in 500 mL amber glass bottles, sealed, labeled with hazard warnings and chemical identification for laboratory use. |
| Shipping | Methylbenzyl bromide should be shipped as a hazardous chemical in compliance with relevant regulations. It must be packed in tightly sealed containers, clearly labeled, and cushioned to prevent breakage. The package should be kept upright, protected from heat, and transported with appropriate documentation, using approved carriers for toxic and flammable substances. |
| Storage | Methylbenzyl bromide should be stored in a tightly sealed container, away from light, moisture, and incompatible substances such as strong bases and oxidizers. Keep it in a cool, dry, well-ventilated area specifically designed for corrosive or hazardous chemicals. Proper labeling is essential, and access should be restricted to trained personnel. Use explosion-proof equipment if necessary. |
Applications of Methylbenzyl Bromide in Industrial ManufacturingMethylbenzyl Bromide plays a critical role as an alkylating agent and intermediate across several advanced chemical manufacturing sectors. Our company directly supports downstream formulators, specialty chemical producers, and pharmaceutical plants by delivering consistent quality for demanding synthesis protocols. All application details below are derived from actual customer routes and established industrial usage patterns. 1. Pharmaceutical Intermediate for Antihypertensive APIsMethylbenzyl Bromide is used in the synthesis of select antihypertensive active pharmaceutical ingredients (APIs), notably as a key intermediate for beta-blocker molecules. Its role involves benzyl alkylation steps that build the structural core for API pharmacophores. Strict manufacturing controls govern each stage to ensure regulatory compliance and reproducibility in downstream synthesis. Customers typically implement high-purity material for multi-step reactions, supporting traceability from intermediate to final tablet or injectable formulation. Industry compliance standards
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2. Agrochemical Intermediate for Pyrethroid InsecticidesMethylbenzyl Bromide serves as a crucial building block in the synthesis of several pyrethroid-class insecticides. Its reactivity supports the formation of ester or ether bonds during the creation of active pesticidal ingredients. Agrochemical producers deploy specific process trains and quality systems to mitigate any residual halide in the end-product, complying with stringent national and international pesticide regulations. Industry compliance standards
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3. Fragrance Ingredient Synthesis (Aromatic Compounds)Manufacturers of specialty aroma compounds employ Methylbenzyl Bromide in the synthesis of substituted aromatic derivatives used as fragrance building blocks. It typically functions in Friedel–Crafts alkylation or nucleophilic substitution processes that produce value-added aroma chemicals. Tight process controls are required to ensure low residual halide and to meet purity parameters demanded by fragrance industry regulators. Industry compliance standards
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4. Advanced Polymer Monomer SynthesisMethylbenzyl Bromide is introduced as a functional monomer precursor in the production of specialty polymers and copolymers with enhanced thermal and chemical resistance. The bromo functionality enables precise placement of pendant groups on polymer chains, which affects solubility, mechanical strength, and compatibility for coatings and advanced engineering applications. Production lines incorporate continuous monitoring to assure full conversion and stringent removal of reactive halides before polymerization or crosslinking stages. Industry compliance standards
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5. Laboratory Reagent for Quaternary Ammonium Compound SynthesisApplied as an alkylating agent, Methylbenzyl Bromide is adopted by downstream manufacturers and contract labs for the synthesis of bespoke quaternary ammonium salts. These compounds serve as phase-transfer catalysts, DNA extraction reagents, and disinfectants. Handling protocols demand dedicated ventilated environments and analytical QA tracking to ensure each batch aligns with reference specifications relevant to the end use. Industry compliance standards
Typical usage ratio
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Each batch of Methylbenzyl Bromide we manufacture reflects years of hands-on experience, not just technical specs. The team here understands that for researchers and chemical processors, purity and traceability aren't marketing lines – they're the difference between smooth downstream reactions and wasted time or costly surprises. We focus on the 4-Methylbenzyl Bromide model, recognized for its role as a key alkylating agent. Labs searching for consistent reactivity and reliable results demand more than just meeting minimum specifications. Every lot comes from reactors maintained with a level of attention that only comes from seeing what happens when shortcuts get taken – which is why they never do here.
Methylbenzyl Bromide is not a commodity anyone grabs off the shelf for casual use. Its main application sits in the synthesis of pharmaceutical intermediates, agrochemical building blocks, dyes, and advanced performance materials. The reactivity of the benzyl bromide group provides an essential handle for introducing the methylbenzyl moiety into heterocyclic scaffolds, aromatic systems, and organometallic frameworks. The practical value lies in its ability to enable new carbon-carbon and carbon-heteroatom bonds, serving as the bridge to targeted molecules that deliver on function and quality.
In production, even minor impurities – those hard-to-catch residues or side-products – can drag down process efficiency or introduce batch-to-batch variability. We've learned those lessons directly on the line. Each kilo of Methylbenzyl Bromide that leaves our plant gets scrutinized, including GC-MS profiling and moisture checks, because nothing ruins a reaction like an unexpected contaminant. You won't find these stories on technical data sheets, but any chemist who's seen a product ruined by low-grade starting materials appreciates why obsessive control matters.
The chemical marketplace contains a variety of brominated benzyl derivatives. Some feature different positions for the methyl group, such as ortho or para, which can affect reactivity toward specific nucleophiles. Through direct process development, we've witnessed that 4-Methylbenzyl Bromide offers a unique balance of reactivity and selectivity in alkylation reactions. For example, its stability in storage and handling reduces risk during transport, while the methyl group at the para position influences electron density just enough to make it practical for most standard applications without introducing unwanted side-reactions.
Many suppliers carry broader categories, lumped together as “substituted benzyl bromides,” but a close look at performance data reveals differences. In the lab, those differences show up in yield, reaction time, and downstream purity. On paper, a methyl in position 2 or 3 might sound close enough, but after seeing chromatograms from third-party material, only homogenous, strictly controlled para-methylbenzyl bromide gets our nod. These details drive reproducible results, especially at scale, where every fraction of a percent matters.
Sourcing from a manufacturer dedicated to traceability changes the field. After a decade of troubleshooting customer syntheses, we've learned what a variation in halide content or a minor by-product can do to a downstream reaction – especially when scaling from grams to tens of kilos. For each batch, we hold archived analytical records, not because any regulation demands it, but because more often than not, it's our own technical team or a customer’s process chemist asking years down the line about a discontinuity that cropped up after a formulation change elsewhere.
From the first charge of raw toluene to the controlled addition of NBS and bromine sources under strict temperature profiles, we've measured and mapped every variable. Subtle upstream choices, like solvent ratios or purification protocols, show up in final product color, odor profile, and purity. Consistency doesn't faze us, because we've solved its challenges so often we build their solutions into daily procedures rather than waiting for audit season.
Reactions using Methylbenzyl Bromide as an alkylating agent offer straightforward mechanisms, but downstream issues rarely stem from simple theory. A trace of unreacted starting material, a hint of dibrominated side-product, or a spike in water content – these tiny flaws cause headaches for anyone worried about crystallization, final purity, or scale-up performance. Every call from an R&D partner struggling with an unexplained yield drop or product stain pushes us to probe deeper into our methods.
Because we also synthesize compounds downstream from the same intermediate, we feel these pains ourselves. It's built a mindset where we anticipate problems before they become technical support questions, whether it means optimizing recrystallization steps, extending drying times, or tweaking quenching conditions. Each change comes from field experience, not just abstract guidelines. That’s the confidence we supply in the drum – the assurance that the process behind the chemical matches its label.
Most buyers compare the specs first: assay levels, moisture content, melting or boiling points, and packaging sizes. But numbers don’t build trust on their own. In-house, we target minimum assay of 99.0%, but won’t sign off unless the behavioral profile – the way our product responds in representative alkylation tests – matches what our own process designers require. It’s the functional purity that matters: how it performs when tasked with making that pharmaceutical intermediate or advanced monomer, not just how it scores in routine QC.
Sometimes, that means going beyond standard silica-gel filtration to more advanced purification, or holding a batch for extra time until it stabilizes properly. Feedback loops between the production floor and application teams drive continual improvement. And any oddity spotted in shipment – a shifted color, an odor suggesting partial degradation – triggers a hold and root-cause review. Our protocol insists that the label matches the work behind the ingredient, every time.
We have seen requirements grow stricter with regulators demanding provenance, purity, and safety not just at the final step, but right from the start. Methylbenzyl Bromide sits under several watchful eyes, and the rules can vary from country to country. Customers working under cGMP or REACH notice the difference when real traceability backs each shipment, not just an off-the-shelf certificate. Auditors ask for process validation data, historical stability reports, and greenhouse, waste mitigation logs. The familiarity we’ve built with these workflows translates directly to smoother documentation for our customers – saving hours of back-and-forth during project launches or compliance reviews.
Maintaining compliance isn’t just about protocols – it stems from material handling experience and knowing how small deviations impact big outcomes. You can only spot issues in documentation if you watch what happens on the line, from raw stock storage through to final containment. That’s become part of our manufacturing rhythm rather than an interruption.
Technical support doesn’t stop at shipment. Chemists and process engineers often call to clarify optimal addition sequences, solvent choices, or storage suggestions after their product arrives. Instead of relying on generic advice, we pull answers directly from our experience – the same techniques we’ve trialed in scaling up and troubleshooting our customers’ applications. If an alkylation mysteriously stalls, or yields decrease after process scale-up, our support group works back with the partner, reviewing results and drawing on our records and hands-on troubleshooting.
This approach shortens start-up times for new processes and avoids the familiar pitfalls of relying on manufacturer promises without a track record. We believe deep technical partnership between maker and user makes a chemical like Methylbenzyl Bromide a reliable foundation for bigger projects. Processing the same material at bench, pilot, and production scale means the feedback loops stay real, and the learning accumulates beyond isolated batches.
Handling and transporting alkyl bromides presents well-known hazards, both in terms of flammability and direct toxicity. We have invested time and resources not just in hazard communication, but in developing packaging, transportation, and waste recycling protocols that reduce risk up and down the supply chain. Every worker on the production floor undergoes hands-on safe handling training, and our incident logs track near-misses as closely as actual events.
Years of directly managing chemical storage and shipment taught us that small improvements, like double-sealed drums or modified ventilation steps, can cut both direct and environmental exposure. High-grade polyethylene liners, improved drum gaskets, and automated drum filling serve real, observed need as much as regulatory demand. These measures don’t show up on standard spec sheets, but matter when customer safety teams visit or review transportation plans.
Not all advances come from new machinery or major innovation. Continuous improvement for us means fine-tuning, small investments in instrumentation, and ongoing staff knowledge development. For instance, rollout of gas-phase GC-FID monitoring made it easier to detect volatile trace materials our previous QC missed, leading to new baseline standards. Process data loggers now record every run, and batch review checkpoints ensure repeatability, especially during scale-ups for new projects.
Customer reviews and technical complaints don’t just trigger fixes for single shipments. They drive tweaks to reaction temperature, extra moisture traps, supplier vetting for upstream solvent lots, or modifications to staff rota during clean-in-place checks. We value these ongoing adjustments supported by direct observation more than any top-down mandate.
Long-term relationships define the chemical manufacturing game far more than transactional sales. Customers who come back for repeat lots of Methylbenzyl Bromide usually relate stories of failed syntheses, missed delivery promises, or unexplained impurities from other sources. Their experience echoes our own early years in the business, before we fully understood how rarely bulk chemical purchases meet the needs of technical teams at project launch or ramp-up.
Repeat business comes from transparency about what makes up each drum and how each lot tracks back to the reactor, the operator log, and the final QC sheet. Customers trust us not by default, but because of documented performance over years. Our own engineers and chemists test each new lot in the same types of reactions used by our clients – and don’t settle for “close enough” unless every parameter checks out.
We have noticed the demand for Methylbenzyl Bromide shifting upward, especially as specialty chemicals and pharma intermediates gain more attention. The current climate rewards consistency and supply chain resilience over aggressive pricing. Supply interruptions, even for a so-called “commodity” intermediate, topple production schedules downstream and dent customer confidence.
Our facility’s approach focuses on maintaining buffer inventory, diversifying upstream sources of toluene and NBS, and ensuring redundant purification train capacity. These aren’t headline moves, but on-the-ground practices that have proven to buffer against raw material volatility and transportation lag. Projects built around our material grow instead of stalling, because the foundation remains solid batch after batch.
After seeing new entrants try to carve a slice of the market by offering low-price alternatives, we have learned what speed-bumps that approach conceals. Trace amines left in, questionable lot records, or mixing grades without proper identification create hard-to-solve headaches at the user end. Process-scale users in pharmaceuticals, advanced materials, and electronics rely on exacting control, validated pathways, and the confidence that the intermediate will not shift mid-run.
We keep close tabs on lateral developments in brominated intermediates, but always circle back to what our process and quality teams can defend directly. Every new synthesis procedure, upgrade in analytical testing, or improved storage protocol grows out of the direct needs we encounter, not out of generic improvement drives. Our entire outlook gets shaped by solving the real problems posed by chemists and process operators putting Methylbenzyl Bromide to work, day in and day out.
Years of refining, troubleshooting, and handling Methylbenzyl Bromide have shown us that what truly sets suppliers apart isn’t marketing polish or broad catalogs. It comes down to the practical knowledge that only comes from consistent, direct experience – and a drive to solve problems at their source. From the first raw input to the finished product that leaves our loading dock, every step gets watched over by teams who understand the stakes for our partners and their end users. Our focus remains on keeping that trust, every single batch.