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HS Code |
279630 |
| Chemical Name | 4-Benzylpyridine |
| Cas Number | 538-68-1 |
| Molecular Formula | C12H11N |
| Molecular Weight | 169.22 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Melting Point | −11 °C |
| Boiling Point | 282–284 °C |
| Density | 1.045 g/cm³ at 20 °C |
| Solubility In Water | Slightly soluble |
| Refractive Index | 1.597-1.601 |
| Flash Point | 134 °C |
| Purity | Typically ≥98% (commercially) |
As an accredited 4-Benzylpyridine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 250g amber glass bottle with a white screw cap, chemical hazard labeling, product name "4-Benzylpyridine," and manufacturer details displayed. |
| Shipping | 4-Benzylpyridine is typically shipped in tightly sealed, chemical-resistant containers to prevent leakage and contamination. It should be packaged and labeled according to relevant safety regulations, with transport in compliance with local and international hazardous materials guidelines. Ensure the package is protected from heat, open flames, and incompatible substances during transit. |
| Storage | 4-Benzylpyridine should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from sources of ignition and incompatible materials such as strong oxidizing agents. Keep the container protected from light and moisture. Store at room temperature and ensure proper labeling. Follow all relevant safety protocols and local regulations for chemical storage. |
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Purity 99%: 4-Benzylpyridine with purity 99% is used in pharmaceutical intermediate synthesis, where high chemical purity ensures optimal reaction yields. Melting Point 49°C: 4-Benzylpyridine with a melting point of 49°C is used in organic synthesis processes, where its defined melting range provides precise phase control. Molecular Weight 169.23 g/mol: 4-Benzylpyridine with molecular weight 169.23 g/mol is used in analytical calibration standards, where accurate mass contributes to reliable quantification. Particle Size 20 microns: 4-Benzylpyridine with particle size 20 microns is used in heterogeneous catalysis research, where controlled dispersion increases catalytic surface area. Stability Temperature up to 120°C: 4-Benzylpyridine stable up to 120°C is used in heat-assisted chemical transformations, where maintained integrity at elevated temperatures minimizes decomposition. UV Absorbance λmax 260 nm: 4-Benzylpyridine with λmax 260 nm is used in spectrophotometric assays, where strong UV absorbance enhances detection sensitivity. Flash Point 100°C: 4-Benzylpyridine with a flash point of 100°C is used in solvent systems, where moderate flammability allows safe handling during lab-scale preparations. |
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From years on the production floor, handling aromatic heterocycles and their downstream requirements, we know that each batch of raw material defines the reliability of the final result. 4-Benzylpyridine, with its chemical structure C12H11N and CAS number 3248-91-7, has become a mainstay in solvent research, custom synthesis, as well as the development of specialty materials and catalysts. In practice, we see requests spanning from small start-up batch runs to the seasoned process engineer scaling up for bulk production.
Unlike distributors or brokers that source from various suppliers, our model sends freshly synthesized 4-Benzylpyridine straight from our reactors to your site. We control the whole route—from raw material purchasing through to purification, bottling, and delivery. That means you receive certainty in molecular purity, as well as easy access to application data we’ve collected in-house over years of running this process.
In our own work, 4-Benzylpyridine first attracted attention because of its thermal and chemical stability, even under tough reaction conditions. It’s handled the heat and moisture better than some other substituted pyridines, making it easier to store and less likely to degrade if left open in busy labs. During early pilot campaigns, we noticed its low water content gives it a less “wet” feel compared to lower-grade stock. Analysts consistently see GC purities above 99.5%, which has greatly reduced troubleshooting and rework in customer syntheses. Those running complex reactions prize this; small levels of aldehydes or oxidation products can mess up yields or block product isolation, especially for those downstream transformations where side reactions can ruin a batch.
Our team once processed a 500 kg custom run for a pharmaceutical research campus. The technical lead there told us that bench-scale samples from other vendors often behaved inconsistently—crystallizing or gumming up during subsequent steps. Our material’s freedom from heavy metals and silica residues avoided repeat filtration steps and prevented product loss. It’s the type of feedback that confirms the time we spend controlling side reactions during production genuinely pays off.
Our customers’ projects run the gamut of organic synthesis. Many fix on the nucleophilic and basic properties of 4-Benzylpyridine, which lets it serve as a ligand, as well as a base, or even as a functional intermediate. In Suzuki coupling work, for example, the aromatic benzyl group on the pyridine scaffold offers more lipophilicity and resonance stabilization than methylpyridine alternatives. That leads to cleaner extractions and easier chromatographic separations downstream.
We often see it used in agrochemical trials, where its stability and reactivity allow for further alkylation or functionalization. In advanced polymer research, its compatibility with various catalysts comes into play; researchers find it allows chain growth reactions to proceed without introducing contamination from precursor instability or breakdown products. Teams running fragrance chemistry—where benzyl groups have known olfactory activity—appreciate the reliability of our analytical profiles, especially when downstream distillation purity or residual content can change final scent notes. No matter the field, most users value predictable behavior from batch to batch, reducing time spent on unnecessary troubleshooting.
On every kilogram that leaves our plant, we supply lot-specific analytical data. Each lot is supported by GC and HPLC purity testing, water content by Karl Fischer titration, and heavy metals analysis by ICP-MS. Our technical group has also set up NMR and IR spectral libraries to help customers cross-verify structures as needed, avoiding the guesswork that used to dog pilot studies and troubleshooting.
During synthesis, our distillation columns operate under reduced pressure with continuous nitrogen protection, which avoids oxidation and limits peroxide formation—a common complaint with some aromatic amines and pyridines purchased from less diligent vendors. Our analytical guys check for trace aldehydes, halides, and remaining benzyl halides using both chemical and instrumental tests. This helps those running catalytic or photochemical processes, where even low-level contaminants can poison a system or shift selectivity.
Over years of hands-on production, we’ve seen many groups try to use simpler pyridines or even methylpyridines in place of the benzyl variant. Almost every time, the substitution pattern makes a marked difference. 4-Methylpyridine, for instance, lacks the electron-donating and steric characteristics of a benzyl group; it can vaporize more easily and lacks the same solubility in less polar media. Chemists doing transition-metal catalysis often find that the benzyl substituent on our product increases binding affinity for metal centers, which directly impacts catalyst turnover and product selectivity.
Compared to alpha-substituted pyridines or 2-benzylpyridine, our 4-position variant generally resists deactivation by steric hindrance. In one project, a customer tested our benzylpyridine in a C-H activation route and noted not only better substrate compatibility but also reduced by-product formation caused by ortho coupling. When academic researchers or industrial chemists need precise regiochemistry, the 4-benzyl isomer simply offers greater synthetic flexibility.
Stock from broad-line suppliers sometimes includes color bodies, trace acids, or solvents. Our internal quality audits flagged that even minor discoloration often comes from iron contamination in oxidized lines—something we’ve solved through inert gas blanketing and rapid, in-line filtration.
Producing this specialty pyridine compound over many years, we’ve come to respect its quirks. We discovered that careful temperature ramping during benzylation helps to avoid runaway exotherms and spurious diarylmethane by-products that can complicate purification. During scaleup, small lab-scale tweaks become critical. The crude reaction mixture must age for a set period to let transient intermediates decompose or react out fully. Skipping this step, as some less experienced operators have done, leaves trace colored by-products or even latent reactivity that hurts the storage life of the finished material.
Storage stability remains a focus. 4-Benzylpyridine resists oxidation better than some partially saturated analogs, but ample care during packaging—such as sealing under dry nitrogen and using UV-resistant drums—further guards against slow degradation. Our technical team periodically re-tests old samples to compare long-term purity retention, looking out for peroxide formation, acidity increase, or off-odors. Through this, we guide end-users with real stability numbers, not just literature data.
Keeping our reactors running clean and flexible has taught us a few things about packaging options. Bulk industrial buyers often order our 4-Benzylpyridine in HDPE drums or glass-lined steel containers, as the product resists most corrosion and does not attack packaging liners. For R&D or pharma applications, borosilicate glass bottles or amber vials protect contents from accidental light or air exposure, preserving analytical consistency. Our filling lines are segregated from other aromatic amines to prevent cross-contamination, something uncovered by frequent ceramic swab checks and batch residue analysis.
We once tracked a quality investigation to residual monomer in packing lines, which prompted a move to dedicated lines for benzylpyridine compounds. This shut down unexplained ghost peaks in customer GC traces, and since then, our batches retain higher GC purity post-delivery. Customers running trace-level analyses appreciate the effort; variabilities seen with “off-the-shelf” stock vanish in real-world use.
Our technical support team includes synthetic chemists who spent years running these reactions, so every answer has direct roots in process experience. Many users call with specific questions about solubility in non-polar media or reactivity toward sensitive halides, and our people routinely advise based on direct observations. We’ve supported trouble calls about stuck crystallizations, odd TLC behavior, or unexpected color formation—almost always linked to minute contaminants or degraded feedstocks that don’t show up in generic COAs.
The team regularly shares solvent system profiles or reactivity maps drawn from in-house trials. We see that many chemists, once frustrated by irregular performance, settle on our 4-Benzylpyridine after running a simple side-by-side comparison; the difference often comes down to less time lost hunting for impurities or tracking batch-to-batch inconsistencies.
Working on-site, we constantly refine our waste minimization and recycling methods. Our distillation stills are sealed and operated with vapor containment to sharply cut fugitive emissions. Laboratory staff handle all benzyl-based pyridines in vented fume hoods, but we found that minimizing residual odor and off-gassing in product drums reduces issues for downstream users as well.
We train staff in regular leak checks and spill prevention, and use rigorous maintenance schedules on transfer lines, heaters, and pumps. Waste fractions from benzylpyridine reactions undergo solvent recovery or are destroyed in closed-loop incinerators with thermal oxidizers, keeping environmental impact as low as we can. These efforts get updated every time a customer pushes for greener chemistry—often providing practical feedback that feeds back into new run protocols.
Over the years, our most helpful feedback has come not from forms, but from phone calls and lab visits. An advanced materials lab once compared six sources and reported significantly fewer side-products and a reduction in purification steps using our material—enough that their technician’s workflow shortened by 20%. A medical chemistry team testing a new route for a kinase inhibitor established that our 4-Benzylpyridine’s single impurity profile saved dozens of hours in impurity tracking.
We’ve hosted collaborative troubleshooting sessions with customers scaling up for the first time. In one case, a client was struggling with an unexpected tar formation; a quick review of our process revealed a minor handling variance during transfer. Adjusting the shipper's drum type and installation of nitrogen-blanketed inserts fixed the issue on future lots, increasing process yields and customer trust.
Manufacturing does not stand still. Our chemical engineers and synthetic teams constantly tweak protocols, whether for energy reduction, improved batch yield, or cleaner downstream processing. Pilot-scale innovations, such as improved condensing systems and catalytic recycle loops, brought about by direct plant trials, help in reducing both costs and waste for each kilogram shipped.
In response to requests for even higher purity, we’ve piloted advanced chromatography skids and continuous monitoring, pushing purity limits past the traditional 99.5%. These tweaks started as custom orders for pharmaceutical partners, but we’ve since rolled them out to the broader customer base. Cleaning validation routines and line-clearance verification allow us to eliminate risk of cross-contaminants between pyridines and other nitrogen heterocycles, something that can be overlooked at traders or third-party packers who handle numerous intermediates in shared facilities.
End-users benefit most from the direct access to hands-on process notes and analytical data: clear provenance, fewer hidden variables, ready solutions when needed. Plant supervisors track every production campaign, so if a customer asks about specific batch behavior, someone who actually worked the reactors can give a straight answer about process context.
Frequent comparisons with mass-market suppliers led us to understand where industrial buyers feel the pinch: too much deviation between batches, difficult filtration, and inconsistent odor or color often point to short-cuts (like skipping secondary purification or aging). General-purpose chemical wholesalers can supply broad-range specification, but those whose end-use requires regulatory scrutiny or tight impurity control favor stricter, plant-originated manufacture.
Occasionally, customers call in asking about substituting cheaper, lower-purity grades for advanced research work. We advise from actual lab experience: downstream application failures often stem from invisible trace organics, air oxidation, or simply light exposure in shipping—problems we’ve learned to preempt. Several scale-up partners conducted A/B testing and chose our batches for both the higher reproducibility and the reduced need for reprocessing waste.
On the analytical side, we see the difference in customer QC labs. Our in-house data—supported by secondary chromatograms and full spectral libraries—saves end-users time, as they don’t chase mystery peaks that pop up in lower-grade stock. For projects under regulatory or GMP control, this becomes a key advantage during audits or filings.
Every season, our sourcing team reviews supply chains, checking that all input reagents meet updated purity and tracing standards. Batch feedback loops between the plant, QA teams, and technical sales help us spot new opportunities for improvement—whether in process yield, impurity tracking, or delivery logistics.
Our relationships with academic partners and R&D companies drive incremental gains. A few recent collaborations have focused on greener synthesis, reducing waste, or deploying continuous process controls to shrink production windows. Each technical call, every site visit, and all customer-supplied feedback become new data points to refine not just our 4-Benzylpyridine, but the whole production operation.
Manufacturing at scale brings responsibility: every drum that rolls out ties our name to the project it enters. That’s why we take every feedback call, every technical question, and every batch anomaly seriously. Our people have built their careers mastering the handling, synthesis, and logistics of aromatic nitrogen compounds, so you get results honed from practical, repeatable experience, not just claims drawn from third-party brochures or stock catalogs.
We believe that transparency, continued investment in tighter controls, and genuine collaboration with users helps raise the standard—not only for the 4-Benzylpyridine we ship but for all specialty chemicals in the marketplace. Partnerships that start with one order often grow into technical collaborations, field visits, or joint troubleshooting routines, always with the goal of keeping production high, trouble minimal, and results consistent.
From process chemists developing new routes to procurement specialists hunting for predictable supply, those choosing 4-Benzylpyridine direct from a dedicated producer tap into a body of knowledge shaped by years of practical manufacture. Our team fields the calls, runs the tests, and continues improving so that each batch supports not just the present delivery but also the next innovation our partners pursue.