3,4-Dichloropyridine

    • Product Name: 3,4-Dichloropyridine
    • Chemical Name (IUPAC): 3,4-dichloropyridine
    • CAS No.: 2456-56-8
    • Chemical Formula: C5H3Cl2N
    • Form/Physical State: Solid
    • Factroy Site: No.968 Jiangshan Rd., Nantong ETDZ, Jiangsu, China
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    • Manufacturer: Nantong Acetic Acid Chemical Co., Ltd.
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    Specifications

    HS Code

    266981

    Cas Number 2402-78-0
    Molecular Formula C5H3Cl2N
    Molecular Weight 164.99 g/mol
    Appearance White to yellowish solid
    Melting Point 41-44°C
    Boiling Point 210-212°C
    Density 1.434 g/cm³
    Solubility In Water Slightly soluble
    Purity Typically ≥98%
    Refractive Index 1.570
    Flash Point 88°C
    Synonyms 3,4-Dichloro-pyridine

    As an accredited 3,4-Dichloropyridine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 3,4-Dichloropyridine is packaged in a 250-gram amber glass bottle with a tamper-evident screw cap and safety labeling.
    Container Loading (20′ FCL) Container Loading (20′ FCL) for 3,4-Dichloropyridine involves secure, compliant packing of 9-12 metric tons in drums or bags.
    Shipping 3,4-Dichloropyridine is shipped in tightly sealed containers, typically made of glass or high-density polyethylene, to prevent leakage and contamination. It should be transported in accordance with local, national, and international regulations for hazardous chemicals, with clear labeling and safety data included. Store and ship in a cool, well-ventilated area, away from incompatible substances.
    Storage 3,4-Dichloropyridine should be stored in a tightly closed container in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers. Keep it away from direct sunlight and sources of ignition. Proper labeling and secure storage to prevent leaks or spills are essential. Use corrosion-resistant shelves and avoid exposure to moisture and heat.
    Shelf Life 3,4-Dichloropyridine typically has a shelf life of 2-3 years when stored in a cool, dry, tightly sealed container away from light.
    Application of 3,4-Dichloropyridine

    Purity 99%: 3,4-Dichloropyridine with 99% purity is used in pharmaceutical intermediate synthesis, where it ensures high product yield and reduced by-product formation.

    Melting Point 52°C: 3,4-Dichloropyridine with a melting point of 52°C is used in agrochemical precursor formulation, where stable handling and precise melting characteristics are required.

    Particle Size ≤10 µm: 3,4-Dichloropyridine with a particle size of ≤10 µm is used in catalyst fabrication, where enhanced dispersibility and homogeneous reaction mixtures are achieved.

    Stability Temperature up to 120°C: 3,4-Dichloropyridine stable up to 120°C is used in high-temperature organic synthesis, where thermal stability maintains product integrity.

    Moisture Content ≤0.5%: 3,4-Dichloropyridine with moisture content of ≤0.5% is used in electronic material production, where minimized water content prevents hydrolysis and corrosion.

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    Certification & Compliance
    More Introduction

    Introducing 3,4-Dichloropyridine: Balancing Performance and Reliability in Synthesis

    Looking Closely at 3,4-Dichloropyridine

    Among the many building blocks in organic chemistry, 3,4-Dichloropyridine has caught the attention of scientists and manufacturers alike, not only for what it offers as a raw material but also for its consistent performance in demanding environments. With the rising push for cleaner reactions and dependable outcomes, the fundamentals of this compound deserve a deeper look, especially as industries move toward stricter standards and reliability becomes harder to overlook.

    Model and Specifications: Quality in Focus

    3,4-Dichloropyridine typically comes as a crystalline powder. It stands out for its chemical structure, featuring two chlorine atoms attached at the 3 and 4 positions on the pyridine ring. This arrangement influences not just its reactivity but also its selectivity during synthesis. Lab results frequently point to a purity above 99 percent for the top-grade product, a level that leaves little room for error in reactions demanding precision. Users appreciate a melting point usually reported between 87 and 89°C, a detail that matters when working with heat-sensitive setups. Solubility presents its own considerations—it doesn’t dissolve well in water but mixes smoothly with common organic solvents, which opens up room for use in a range of processes.

    Weight and density fall into expected ranges for pyridine derivatives. From a handling perspective, storage recommendations follow familiar protocols for protection against moisture and strong oxidizers. Beyond chemistry, practical aspects—such as uniform powder texture and careful packaging to prevent contamination—help support downstream quality. In my experience working with intermediates, a consistent product feel often signals reliable quality assurance upstream.

    Pillars of Application: Why 3,4-Dichloropyridine Matters

    3,4-Dichloropyridine shows up in multiple labs and commercial settings, not just because it looks promising on paper, but also due to its track record in real-world projects. In the pharmaceutical world, this compound has become a valued intermediate for making anti-infectives, antihistamines, and other active ingredients. It does more than fill a chemical gap—it enables specific reactions by offering reactive sites that meet the needs of both halogen and nitrogen chemistry.

    For agrochemical developers, 3,4-Dichloropyridine enters the picture as a precursor for selective herbicides and other agents. The compound’s unique configuration allows for targeted modifications, a feature that makes difference when a minor tweak can improve crop safety and environmental performance. It also offers value in the world of dyes and specialty chemicals, where the demand for vivid, stable compounds never goes away. As an intermediate, this molecule can serve as the backbone for a series of downstream transformations, many of which would feel clumsier or more wasteful with other bases.

    My lab work over the years has made it clear that not every pyridine derivative behaves the same way. Some offer high reactivity but poor selectivity; others miss the mark in yield or introduce impurities that require extra purification steps. In projects that demanded cleaner byproducts and fewer surprises, 3,4-Dichloropyridine often earned its keep through repeatable results and compatibility across a variety of process conditions. At the end of the day, reliability saves both time and trust, two resources that never seem to be in surplus in research and manufacturing.

    What Sets 3,4-Dichloropyridine Apart?

    It’s easy to lump this compound in with other pyridine derivatives, given that many share similar structures. But real experience tells a different story. The low cross-reactivity with nucleophiles, thanks to the position of its chlorine atoms, helps lower the odds of unwanted side reactions. Its particular arrangement makes certain substitutions possible that aren’t so straightforward with isomers like 2,4-Dichloropyridine or 2,3-Dichloropyridine. In smaller-scale work, this can translate to fewer hours troubleshooting or running repeated purification cycles.

    Compared to more commonly used halopyridines, 3,4-Dichloropyridine offers a blend of reactivity and selectivity that fits especially well for stepwise syntheses where mistakes get expensive fast. Colleagues in pilot plants have shared that batch consistency rarely wavers when reputable suppliers provide this intermediate, which isn’t always the case with other multi-chlorinated pyridines or their brominated cousins. The net result: more predictable pathways, improved process safety, and less waste.

    Many users notice that switching from less refined alternatives can sharply cut time spent on troubleshooting off-spec reactions. For example, working with 2,6- or 2,5-dichloropyridine often raises the risk of forming difficult-to-remove impurities. In short, 3,4-Dichloropyridine brings a valuable balance—enough reactivity to enable efficient synthesis, but not so much that you’re forever cleaning up after side effects.

    Safety and Environmental Impact

    Using halogenated intermediates has always required extra vigilance, not just for the immediate health of workers but for the places where these substances end up after manufacture. 3,4-Dichloropyridine is no different. Its safety profile suggests careful handling, especially when weighing or transferring powders. Proper ventilation and protective gear remain as basic rules for any operation dealing with aromatic chlorinated compounds. Years of industrial experience have shown that neglecting these measures can lead to persistent headaches—both literal and logistical.

    Environmental issues around halogenated intermediates continue to generate concern, particularly when waste streams contain poorly managed byproducts. Unlike several heavier, less reactive alternatives, 3,4-Dichloropyridine lets many processes run at lower temperatures and with fewer harsh reagents. This could mean less overall pollution, but only as long as users take responsibility for complete waste treatment and proper containment on-site. Sharing responsibility between manufacturer and end user creates a safety net for the entire process chain, especially as global environmental standards keep getting stricter.

    One point that deserves attention is the need for reliable waste management. Disposal of spent solutions or off-spec product has to proceed according to local hazardous waste rules. More organizations now partner with certified disposal firms or invest in on-site neutralization. Keeping soil and water clear of chemical residues relies on consistent monitoring and transparent reporting—a lesson that many facilities have learned, sometimes painfully, through regulatory fines or reputational damage.

    Market Trends and Industry Context

    Demand for high-purity intermediates keeps growing, and 3,4-Dichloropyridine sits comfortably within that trend. Pharmaceutical innovators lean on it for both established drugs and the wave of new molecules that tackle resistant infections or novel diseases. Its reliability in cross-coupling reactions and N-alkylation has helped keep it front and center when process chemists draw up optimal synthetic routes.

    In agriculture, food safety and environmental concerns shape product development cycles. Herbicides and fungicides built on this molecule’s base allow for more targeted activity, enabling product designers to fine-tune action while reducing fallout on non-target species. In specialty materials, few other pyridine derivatives can claim the same blend of dye stability and resistance to fading, which matters for products that see sunlight or repeated wear.

    Having worked both in academic and industrial settings, I’ve noticed that shortages or sudden price swings in this market rarely last long—the pipeline for 3,4-Dichloropyridine stretches across several major manufacturing centers, each with experience in multi-step oxidation and chlorination. Longstanding partnerships among producers, distributors, and consumers help to keep quality and availability on a steady keel, with large buyers often testing each shipment for off-spec batches before accepting delivery.

    Building Trust: Track Records and Testing

    The trust that users place in 3,4-Dichloropyridine springs from more than just purity certificates. Regular site visits, batch-specific quality checks, and open lines of communication between suppliers and end users keep standards on track. Leading suppliers test lots for melting point, spectrum analysis, and contaminant levels—steps that serve not just regulatory needs but also the peace of mind for process chemists whose reputations rest on each run.

    Many industry veterans check not just for advertised purity, but also factors like consistent color, absence of visible clumping, and ease of measurement. Sometimes these “small” issues make the difference between a smooth campaign and several days hunting for the source of a failed reaction. I’ve found that transparent reporting—whether a batch falls slightly off-target in moisture or has a drop in purity—often means smoother project planning and fewer nasty surprises down the road.

    Every year, new analytical tools come into play, but visual and tactile inspections by trained staff still matter. Experience counts—not every contaminant gets flagged by machines. Training lab teams to recognize subtle changes in smell, appearance, or texture of pure and impure product has saved many projects from derailment.

    Facing Challenges: Availability, Regulation, and Innovation

    No chemical supply chain operates in a vacuum. Trade disruptions, changing rules on hazardous material transport, and shifting regulatory demands all create bumps in the procurement path. For 3,4-Dichloropyridine, current demand stems partly from new drug development pipelines and increased regulatory scrutiny of legacy chemicals. Reliable access and compliance start with clear contracts and detailed documentation—two things that can seem tedious until they avert a shutdown or costly recall.

    As regulatory frameworks evolve, particularly in regions with robust environmental laws, buyers look for suppliers that invest in secondary containment, air controls, and traceability. Building new capacity means navigating a web of permits—not just for emissions but for the use and disposal of byproducts. One solution lies in closer collaboration between buyers and producers to keep documents updated and to prequalify for new standards before they become mandatory.

    Innovation also shapes how 3,4-Dichloropyridine enters the picture. New methods, such as catalytic chlorination and cleaner separation techniques, can mean lower contaminant profiles and less waste. Sourcing teams increasingly favor producers that invest in greener processes, not just because it looks good on a press release, but because it often leads to fewer supply interruptions and better long-term stability. In my own work, projects run more smoothly with suppliers who adopt early improvements, especially when those changes deliver better yield and stricter control over trace impurities.

    Risk Management: Looking Out for Stability

    While process reliability sets 3,4-Dichloropyridine apart, ongoing vigilance remains necessary. Chemical properties only offer so much assurance without process controls to match. Producers usually keep extensive records of lot numbers, packaging dates, and storage parameters. Maintaining chain of custody through transparent documentation prevents mix-ups and helps teams quickly trace problems to their source if something goes wrong.

    Supply risks can also stem from geopolitical factors or transport disruptions, which can introduce delays or temporary shortages. Projects that depend on continuous delivery schedules increasingly rely on backup vendors or long-term supply contracts to cushion against sudden swings. These relationships play a key role—not just for cost savings but for ensuring that time-critical manufacturing doesn’t get upended by events outside anyone’s control.

    Another area often overlooked centers on training. Getting frontline workers to spot subtle shifts in product quality or shipping damage has helped prevent many near-misses. A robust feedback loop between the end user and supplier often leads to tightly honed requirements, which means fewer rejections at the receiving dock and smoother production down the line.

    Opportunities for the Future

    The market for 3,4-Dichloropyridine shows few signs of slowing, especially as advanced synthetic methods unlock new applications. Researchers continue to push the envelope, finding ways to streamline reactions, improve selectivity, and cut waste. This opens the door for advanced medicines with unique chemical backbones and for agricultural formulations that meet new standards for safety and environmental impact.

    On the technology front, improvements in flow chemistry and computer-aided process modeling have started to shape how labs approach pyridine-based intermediates. With these tools, synthesis routes can often get mapped out, optimized, and tested virtually before the first reaction flask ever heats up. More companies see value in collaborating with technical service teams at the supplier’s end, blending hands-on chemistry skills with big data to squeeze out inefficiencies and sharpen safety.

    In my own work, the best results often come from collaborative problem-solving. Process chemists, engineers, and supplier reps share insights in real time—troubleshooting as a team to catch any hiccup before it becomes a real problem. As the pace of innovation quickens, those relationships will likely become even more important.

    Conclusion: Substance, Trust, and Progress

    3,4-Dichloropyridine stands as more than just another chemical. Its place in modern synthesis reflects years of fine-tuning, rigorous quality control, and a commitment among experts to deliver predictable, safe, and high-performing materials. Its structure and performance differentiate it from similar compounds, benefiting manufacturers aiming for tighter specifications and sharper outcomes. The link between substance quality and final product performance has never been clearer. Those who invest in the right intermediate—along with the right partners—gain more than a raw material; they earn a foundation of trust that supports bigger ambitions across industries.

    With continued attention to responsible handling, waste management, and collaborative progress, 3,4-Dichloropyridine can continue serving as a dependable building block in pharmaceuticals, crop protection, and specialty materials. The lessons drawn from handling, testing, and improving this product extend beyond chemistry. They reach into the very core of how teams build value from the ground up—through shared experience, transparent standards, and a commitment to progress that benefits both business and society.