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2,4-Dichloroquinoline

    • Product Name 2,4-Dichloroquinoline
    • Alias 2,4-DCQ
    • Einecs 219-055-1
    • 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
    VTB
    Specifications

    HS Code

    416226

    Chemical Name 2,4-Dichloroquinoline
    Cas Number 612-41-3
    Molecular Formula C9H5Cl2N
    Molecular Weight 198.05 g/mol
    Appearance White to light yellow crystalline powder
    Melting Point 56-58°C
    Boiling Point 286°C
    Density 1.37 g/cm³
    Solubility Slightly soluble in water; soluble in organic solvents such as ethanol, chloroform
    Purity Typically ≥98%
    Smiles Clc1cc2ncccc2cc1Cl
    Inchi InChI=1S/C9H5Cl2N/c10-6-3-4-12-9-5-7(11)1-2-8(6)9/h1-5H
    Synonyms 2,4-Quinoline dichloride

    As an accredited 2,4-Dichloroquinoline factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 2,4-Dichloroquinoline is packaged in a sealed 100g amber glass bottle with a secure cap and clear hazard labeling.
    Shipping 2,4-Dichloroquinoline is shipped in tightly sealed, corrosion-resistant containers to protect it from moisture and contamination. It is transported according to international regulations for hazardous materials, typically as a solid. Proper labeling and documentation are included, and handling recommendations ensure safety during transit and storage.
    Storage 2,4-Dichloroquinoline should be stored in a tightly sealed container, away from moisture and direct sunlight, in a cool, dry, and well-ventilated area. Keep it separated from incompatible substances such as strong oxidizers and bases. Ensure proper labeling and avoid exposure to heat sources. Use secondary containment to prevent spills and comply with local regulations for hazardous chemicals.
    Application of 2,4-Dichloroquinoline

    Applications of 2,4-Dichloroquinoline in Industrial Manufacturing

    As a manufacturer specializing in 2,4-Dichloroquinoline, we provide reliable supply for a range of advanced industrial applications. Our downstream customers in crop protection and pharmaceutical synthesis integrate this specialty intermediate into established technical processes. The following application scenarios illustrate how our product fits diverse production flows, enabling compliant and efficient formulation design while supporting measurable product quality at the finished goods level.

    1. Agrochemical Active Ingredient Synthesis

    Major global herbicide manufacturers utilize this compound as a key intermediate for synthesizing quinoline-based active substances. In the synthesis of selective post-emergence herbicides, it is introduced during the construction of the heterocyclic scaffold, directly influencing the purity and performance of the resulting active. Key control parameters during integration center on managing chlorination and ring closure reactions to comply with regulatory residue limits and technical requirements for field application. Adjusting input ratios is essential for targeting active content and lowering unwanted byproduct formation in the final technical concentrate.

    Industry compliance standards

    • FAO/WHO Specifications for Agricultural Pesticides
    • ISO 9001:2015 for Quality Management
    • EU Regulation (EC) No 1107/2009 on Plant Protection Products
    • US EPA Registration Standards for Herbicides

    Typical usage ratio

    • 0.32–0.44 molar equivalents per mole of target active; precise dosage depends on stoichiometry of the heterocyclic condensation path and the impurity control strategy within technical concentrate production.

    Downstream process integration

    • Integrated in the initial cyclization and chlorination stages for herbicide technical synthesis, typically in multi-step batch reactors under controlled temperature and solvent conditions where high-purity intermediate is critical for conversion efficiency.

    Final product types

    • Post-emergence quinoline-based herbicides (technical grade)
    • Herbicide formulations for cereal and rice crops (emulsifiable concentrates, suspension concentrates)
    • Pre-mixed herbicide blends tailored for resistance management protocols

    2. Pharmaceutical API Intermediate Production

    Producers of active pharmaceutical ingredients deploy this material in the synthesis of select antimalarial and antibacterial agents where quinoline derivatives define the pharmacophore. During stepwise construction of the API, it functions as a chloro-substituted precursor, dictating the downstream substitution pattern and physicochemical profile. The integration requires precise molar input control and documentation to satisfy cGMP traceability and impurity qualification standards, with strict attention to reactant addition protocols and in-process monitoring.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • USP–NF/Ph. Eur. Monographs where applicable
    • 21 CFR Part 211 (FDA cGMPs for Finished Pharmaceuticals)
    • EDQM CEP Certification (as required by destination market)

    Typical usage ratio

    • 0.85–1.05 equivalents per synthesis batch, with specific adjustment based on API molecular design and desired impurity cap according to DMF filing limits.

    Downstream process integration

    • Charged at the heterocycle formation or chlorine-substitution stage in the API multi-step synthesis route, frequently in acid- or solvent-based coupling protocols under precise temperature control.

    Final product types

    • Antimalarial active pharmaceutical ingredients
    • Selective antibacterial actives based on quinoline core
    • Investigational new drugs for tropical disease therapy in clinical pipeline

    3. Veterinary Drug Intermediate Manufacture

    Animal health companies employ this compound for producing veterinary actives where a dichloroquinoline moiety serves as the backbone of antimicrobial or antiparasitic products. During technical synthesis, managing loading rates can affect compliance with finished veterinary medicine monographs. The process integration step requires tight stoichiometric consistency, as deviations can impact batch-to-batch antimicrobial spectra and product registration data packs for regulatory submission in global markets.

    Industry compliance standards

    • VICH GL2 GMP Guidelines for Veterinary Pharmaceuticals
    • European Pharmacopoeia (Ph. Eur.) for Veterinary APIs
    • Chinese Veterinary Pharmacopoeia Standards
    • ISO 22442 for Animal Derived Pharmaceuticals

    Typical usage ratio

    • 0.70–0.95 molar equivalents relative to primary amine reactant, varied according to targeted antimicrobial activity and residue study requirements.

    Downstream process integration

    • Used in the initial quinoline core scaffold formation, generally in closed batch systems under inert atmosphere to prevent side-reactions impacting veterinary monograph compliance.

    Final product types

    • Veterinary injectable antimicrobial agents
    • Oral antiparasitic preparations
    • Feed additives with regulatory veterinary claims

    4. Fine Chemicals for Dye Intermediate Synthesis

    Manufacturers in the specialty dye sector utilize this raw material to build advanced heterocyclic dye intermediates required for high-performance textile and ink colorants. Differentiation lies in the input ratio and purity grade necessary for obtaining precise chromatic properties and application fastness. Close monitoring of the integration sequence and purification is essential to remain within functional dye toxicity and migration specifications for regulated markets.

    Industry compliance standards

    • OEKO-TEX® Standard 100 (for dye safety in textiles)
    • REACH Regulations for Chemical Substances
    • ISO 105-C06: Testing for Color Fastness
    • ECO PASSPORT by OEKO-TEX® (for chemical legitimacy in dyes)

    Typical usage ratio

    • 0.20–0.50 molar equivalents per dye batch formulation, tuned for the desired color intensity or resistance to fading, with supply of higher assay grade for premium applications.

    Downstream process integration

    • Charged during the heterocycle assembly or as a halogen donor in azo and anthraquinone dye intermediate syntheses, often under reflux in multi-step batch reactors with targeted isolation/purification stages.

    Final product types

    • Reactive and disperse dyes for polyester and polyamide fibers
    • High-performance textile printing inks
    • Colorant intermediates for food-contact packaging applications (where permitted)
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    Certification & Compliance
    More Introduction

    2,4-Dichloroquinoline: Experience from the Manufacturer’s Floor

    What Distinguishes 2,4-Dichloroquinoline?

    Step inside our production facility, and you’ll notice the sharp, distinctive aroma of chlorinated aromatics. For years, 2,4-Dichloroquinoline has run through our reactors in consistent cycles, bringing reliability to customers who cannot settle for surprises. The value in 2,4-Dichloroquinoline lies not just in its chlorinated structure, but in the repeatable results it offers across pharmaceutical and agricultural synthesis. Our material’s purity doesn’t fluctuate across batches, because we refuse to shortcut steps or risk unknowns. On the market, you may see dichloroquinolines of various grades, but many have impurity profiles that throw projects off course. We’ve seen plenty of clients step away from those frustrations, seeking out the stability and dependability that controlled, large-scale manufacturing delivers.

    Grabbing a sample from a drum fresh off our filling line, the fine, pale yellow powder reflects more than completion — it marks the culmination of a sequence refined over dozens of campaigns. Each kilogram represents hundreds of quality checks, not just surface-level spot tests. We track every lot from input to packaging, documenting temperatures, reaction times, and trace contaminants. Why does this matter? No one wants a costly synthesis derailed by unpredictable reactivity or unknown residues. We’ve faced those headaches ourselves, years before bringing this compound to the market in earnest. That’s led us to set our own benchmarks — rigorous control of dichloro substitution and rigorous removal of mother liquor residues — not because a certificate specified it, but because the problems that follow from neglecting these steps cost us time and trust.

    Some buyers expect quinoline derivatives to show up as amorphous brown masses, but significant differences emerge from stripper column settings, vacuum timings, and the type of crystallization solvent. We take notes on every shift, logging minute adjustments that keep moisture below spec and residue halogens to barely detectable traces. More than one customer has remarked that running reactions with our 2,4-Dichloroquinoline brings fewer purification headaches downstream. The result is direct: faster batch turnaround and less downtime. That consistency doesn’t come by accident — it comes from years spent walking the line, not just reading spec sheets.

    Specifications That Reflect Real Process Reliability

    You’ll find 2,4-Dichloroquinoline on demand in several models — analytical, technical, and high-purity pharmaceutical grade. Across these, our typical assay averages 99.5% or higher, but we emphasize what each figure means on the ground. A consistently high assay isn’t just for show; it decides how far you can trust your own yield calculations and impurity tracking. Moisture content remains under 0.2% in every shipment. We document heavy metals, residual solvents, and halide ions to figures that actually matter for end-use synthesis, not just because a client once requested them, but because they steer reaction robustness and shelf stability over months, not days.

    We didn’t develop our specs for single-use purchases. Years working directly with process chemists and engineers built an understanding of what keeps a line running. Tweaks in micronization, tighter control of off-gas removal, or selecting FDA-listed packaging liners — each step reflects dialogue with customers who point out where ordinary practices fall short. We routinely stress-test material performance for both small molecule intermediates and pesticide design, recognizing the bottlenecks that plague both industries. These details separate genuine makers from repackaging operations or third-party brokers.

    2,4-Dichloroquinoline serves as a critical node for downstream transformations. Demand can surge without warning, so we maintain scale flexibility: pilot-scale drum deliveries or bulk multi-ton orders. Each shipment faces its own hurdles with logistics and documentation. We register output with corresponding Material Traceability Numbers, so you won’t be left piecing together a shipment’s origin or processing steps if a question arises. The real-world impact? You gain predictability — project managers don’t lose time tracing root-cause failures, and procurement teams don’t scramble for documentation at the last minute.

    Applications Driven by Industry Evolution

    Most of our business drives toward two destinations: pharmaceutical intermediates and advanced agrochemical synthesis. Both segments operate on unforgiving timelines and demand uninterrupted supply chains. We’ve witnessed chemistry labs grind to a halt after sourcing subpar dichloroquinolines from unknown producers, losing days (or weeks) correcting for unexplained impurities that shouldn’t have made it past an honest inspection. Early on, we engaged directly with R&D teams at global pharmaceutical innovators, providing material lots tailored for trial phases and then scaling to metric tons when product launches hit. The exercise reinforced one lesson above all — if a reaction fails due to off-quality input, everyone loses.

    Our 2,4-Dichloroquinoline delivers predictable reactivity in Sandmeyer-type couplings, cyclizations, and as a key building block in nitrogen-heterocycle scaffolds. In crop protection, it fits precisely where formulation engineers need it — as a reliable step-off for regulated herbicides and insecticides. We stay dialed into the regulatory standards guiding these end-markets, regularly updating our SOPs for (eco)toxicological data, package stability under extreme transit, and material reporting to align with global compliance. It’s not enough to simply meet existing certifications; regulatory winds shift, and so must we. We send teams to global compliance seminars, audit our processes against both established and emerging standards, and initiate internal briefings to propagate industry updates back to the bench chemists and quality inspectors.

    Clients have brought us some of their toughest process obstacles — highly sensitive syntheses where even trace acidity, unanticipated by-products, or a few ppm of extraneous halides forced rework or scrapped product. We don’t shy away from troubleshooting; we pull our own samples, break down the GC-MS and NMR reports, and help replicate client-side reactivity to pinpoint root causes. That culture of shared problem-solving comes from doing the work, not just reading flowcharts. Open lines of communication build trust, and that trust reduces uncertainty at the formulation stage.

    Comparing Against “Market Standard” Products

    Sometimes we field questions on why our product commands a premium over certain “market standards.” You get what you pay for in the fine chemical world. We’ve tested competitor samples found in commerce and catalogues. Contaminant signatures regularly surprise us — signs of incomplete dichlorination, remaining quinoline, chlorobenzene residues, or even inconsistent melting points that signal botched purification. Labs running our material don’t waste time battling batch-to-batch variations. Fewer headaches mean lower hidden costs. We recognize that the lowest upfront price doesn’t pay off if yields drop, by-products obscure main peaks, or solvent residues demand extra effort at workup.

    Over the years, as new customers brought us their supply chain horror stories, we’ve made it a point to run comparative reactivity testing. We check our lots against both Asian and European market samples. The differences manifest directly — smoother filtration, more reliable crystallization, steady color and purity along the shelf life. Feedback often returns to the same theme: competing products collapse during upscaling because their impurity profiles shift at ton scale. We keep tight control over every run, using real-time monitoring and in-line analytics to guarantee every kg leaving our plant matches the original developmental batch.

    From the technician hand-scooping powder on the shop floor to the product manager reviewing COA data, every link in our internal chain holds responsibility for outcome. That’s why our team holds quarterly cross-department workshops addressing customer observations: what bottlenecks did clients encounter? What handling or reactivity quirks emerged? How did our lot fare in complex multi-step schemes? While certificate numbers and specs play a part in market comparisons, nothing substitutes for honest, face-to-face customer debriefs and transparent response to concerns.

    The Human Element: Design, Sourcing, and Ongoing Improvement

    Each batch of 2,4-Dichloroquinoline starts with diligent sourcing of feedstock quinoline and high-purity chlorination agents. Over years of procurement cycles, we’ve built direct relationships with the producers of every upstream input. If routinely sourced quinoline shows variance, we investigate before it blends into production, cross-referencing GC analysis and seasonal trends at the supplier end. We’ve learned that chemicals sourced amid seasonal volatility — monsoon surges, shifting freight lanes, or port congestion — rarely meet specification if inspection lapses.

    Our reactor operators maintain logs as a matter of everyday discipline, documenting cycle times, temperature profiles, reagent addition rates, and filtration throughput. These logs surface in internal post-mortems any time yield drops or impurity profiles shift. No data gets ignored because every batch teaches us something new — a reality only those who actually run plant lines fully understand. It takes patience to await solvent recovery between cycles; some in the market cut corners, but this often leads to instability in the finished product. Special attention to drying cycles prevents color drift and hydrolysis by-products from ruining what should be a shelf-stable, pale powder.

    On the back end, packaging staff check for packaging defects and containments, confirming that each liner, drum, and tamper-evident seal meets the standard. After shipment, support teams field any post-delivery questions, reviewing the documentation and assisting in audit response or regulatory checklists. We’ve absorbed enough customer feedback to internalize how even modest deviations in a packing lot can spark transit or storage issues downstream. This is why our logistics team maintains real-time tracking through all carrier transfers and geographies.

    Offering Practical Solutions to Industry Challenges

    Some of the sharpest challenges in this field involve scale-up, documentation, and forecasting market requirements. Material never moves off the shelf at a perfectly predictable pace. Over many years, we’ve learned to keep buffer inventories of both bulk and small-pack sizes, minimizing the risk of interruption for clients on urgent schedules. If a rapid uptick in demand hits, we can reconfigure production schedules and tap backup stocks, cutting lead times rather than pushing clients into a waiting game.

    Process engineers at client facilities often confront unanticipated hurdles during transfer from laboratory to pilot or production scale: filtration clogs, unplanned exotherm, sluggish crystallization, or even shipped material that doesn’t dissolve as expected. We tackle these by offering real pre-production samples, supporting scale trials with representative batch lots, and opening our QC labs to joint tests. Clients are encouraged to bring their own analytical team or third-party inspectors — we have nothing to hide. Sometimes, clients uncover quirks in our material that we hadn’t noticed in our own process. We see shared problem-solving as a route to refinements — not as a threat to be sidestepped, but as a collaboration. Each successful client launch strengthens our own reputation as a genuine manufacturer.

    Global markets rarely remain static. Trade policies shift, freight costs rise, and regulatory positions on quinoline derivatives evolve. We operate with both local thinking and global perspective, tracking both the granular supply chain swings and the macro signals of shifting demand. When a country tightens import requirements on chlorinated aromatics or restricts certain packaging forms, our compliance and supply chain teams adapt. Whenever possible, we pre-notify recurring clients about documentary or labeling changes. This preemptive approach comes from living through too many “surprise” regulatory audits over two decades in this space.

    Commitment Beyond Material Supply

    Selling 2,4-Dichloroquinoline doesn’t end at the bill of lading. Projects fail when the human elements behind chemical supply vanish after delivery. We maintain open lines with client chemists and supply chain managers, stepping in when questions arise about analytical results, shelf stability, or new process requirements. Real people pick up the phone or respond directly by email — no call centers or automated bots here. Over years, we’ve built a roster of recurring clients who stay for the transparency and predictability, not just an attractive price. You won’t find their trust reflected in datasheets. It’s built batch after batch, shipment after shipment, audit after audit.

    New clients often bring special requirements for documentation — country-of-origin statements, extended COAs, REACH or TSCA registration clarifications, and shelf-life analysis. We maintain this reporting internally, and update each record after any shift in run parameters, cementing traceability all the way back to initial raw materials. That commitment reflects a broader understanding — in regulated industries, every oversight generates paperwork delays, compliance risks, or worse, shutdowns. We solve future problems before they land on your desk.

    Sometimes, innovation pushes standard boundaries, and a client approaches us about tailoring 2,4-Dichloroquinoline for a novel synthetic route or with additional analytical requests — peroxide content, novel impurity profile, or extended heat stability. We take these on as challenges, not chores. Refusing to shy away from process modifications, we’ve redesigned segments of our own process line in response to breakthrough customer R&D, feeding our manufacturing expertise back into the growing technical knowledge base of our industry.

    Why Deep Manufacturing Experience Matters

    Looking across the years, our experience manufacturing 2,4-Dichloroquinoline has taught us that every fine chemical batch rides on the expertise, care, and vigilance of real people. Third-party traders and repackagers may promise quick availability, but cannot deliver deep process insight, troubleshooting, or bespoke support. Chemical synthesis often reveals the limits of non-expert supply in unpredictable, costly ways.

    We’ve watched client operations run to plan — or stall — on the basis of tiny supplier choices, all rooted in a manufacturer’s willingness to double check, challenge, and refine daily practice. All these details, checked and re-checked at each point, stack up to a difference you notice only when problems arise — or, more quietly, when daily operations sail smoothly over years. 

    In the end, 2,4-Dichloroquinoline remains more than a chemical for us. It stands as proof that detail orientation, partnership, and shared technical problem-solving still matter in modern manufacturing. Our lasting investments in infrastructure, staff training, QA design, and customer support networks allow us to guarantee not just material, but the complete project confidence many clients stopped expecting in today’s marketplace. The story of every batch doesn’t end at our gates; it continues in the uninterrupted progress of every customer downstream.