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5,6-Dichloronicotinic Acid

    • Product Name 5,6-Dichloronicotinic Acid
    • Alias 5,6-Dichloro-3-pyridinecarboxylic acid
    • Einecs 226-917-0
    • 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

    590304

    Cas Number 2406-99-5
    Molecular Formula C6H3Cl2NO2
    Molecular Weight 192.00
    Appearance White to off-white crystalline powder
    Melting Point 168-172°C
    Boiling Point 369.6°C at 760 mmHg
    Solubility In Water Slightly soluble
    Density 1.61 g/cm3
    Purity Typically ≥98%
    Synonyms 5,6-Dichlorpyridine-3-carboxylic acid
    Smiles C1=C(C=NC(=C1Cl)Cl)C(=O)O
    Storage Temperature Store at room temperature
    Pka 2.87

    As an accredited 5,6-Dichloronicotinic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The chemical is supplied in a 25g amber glass bottle, tightly sealed with a screw cap and labeled "5,6-Dichloronicotinic Acid".
    Shipping 5,6-Dichloronicotinic Acid is shipped in tightly sealed containers to prevent moisture and contamination. It should be stored in a cool, dry place away from incompatible substances. The package must be clearly labeled and handled as a chemical product, following all relevant safety, transport, and regulatory guidelines for hazardous materials.
    Storage 5,6-Dichloronicotinic Acid should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from incompatible substances such as strong oxidizers or bases. Protect from moisture and direct sunlight. Store at room temperature and avoid prolonged exposure to air to prevent degradation. Ensure proper labeling and keep out of reach of unauthorized personnel.
    Application of 5,6-Dichloronicotinic Acid

    Applications of 5,6-Dichloronicotinic Acid in Industrial Manufacturing

    5,6-Dichloronicotinic Acid plays a critical role as an intermediate across multiple chemical manufacturing sectors. As an original manufacturer, we supply this raw material to integrators and formulators operating in regulated industries, focused on downstream synthesis with high product purity and lot consistency.

    1. Agrochemical Active Ingredient Synthesis

    Many selective herbicides and crop protection agents for major agricultural markets use this compound as an essential building block during synthesis. Chemists incorporate it at specific reaction phases for chloronicotinyl scaffolding. Plant health product producers source directly for compliance with environmental and residue rules governing finished formulations destined for regulated territories.

    Industry compliance standards

    • EU Regulation (EC) No 1107/2009 (Plant Protection Products)
    • EPA 40 CFR Part 180 (US Agrochemicals Residue Limits)
    • REACH Annex XVII—Pesticide Intermediates Registration
    • ISO 9001:2015 (Quality Management for Chemical Manufacturing)

    Typical usage ratio

    • 5–15% molar ratio relative to total nucleophile substrate, based on target active molecule and crop protection spectrum. Downstream formulators adjust based on herbicide mechanism and regulatory residue limits in each market.

    Downstream process integration

    • Feeds directly into pyrazole and pyridine ring-building stages for active ingredient formation. Commonly enters amidation, halogenation, or esterification during primary or secondary synthesis phases.

    Final product types

    • Selective pre-emergence herbicides
    • Systemic insecticides of the chloronicotinyl class
    • Turf and crop protection agents exported to EU and US markets
    • Bulk pesticide intermediates for multinational contract manufacturing

    2. Pharmaceutical Intermediate for API Manufacturing

    Our 5,6-Dichloronicotinic Acid supplies pharmaceutical manufacturers working under cGMP setups as an essential precursor for certain APIs, especially within anti-infectives and CNS active compound classes. Its high purity supports downstream syntheses where minimal trace impurities are paramount for regulatory drug approval.

    Industry compliance standards

    • ICH Q7 (Good Manufacturing Practice for APIs)
    • USP/NF Monographs (if monographed API involved)
    • Ph. Eur. General Chapters (where applicable for final API)
    • 21 CFR Part 211 (US GMP for Finished Pharmaceuticals)

    Typical usage ratio

    • 2–8% of total reaction mass, with specific ratio determined by the desired API’s synthetic pathway and downstream yield optimization protocols. APIs requiring dichlorinated pyridine moieties employ upper ratio range.

    Downstream process integration

    • Introduced during core aromatic ring construction or during late-stage functional group modification in multi-step syntheses for CNS or anti-viral medication APIs.

    Final product types

    • Antimicrobial pharmaceutical intermediates
    • Pyridine-derived CNS active APIs
    • Selective anti-tuberculosis agents
    • Contract pharma intermediates for export to EU/US/Japan

    3. Specialty Dye and Pigment Precursors

    In the dye and pigment sector, producers utilize this compound to build high-performance intermediate structures for colorant molecules. Downstream integration focuses on halogenated pyridine modification necessary for shade intensity, UV stability, and resistance properties required for technical textiles, coatings, and digital printing markets.

    Industry compliance standards

    • OEKO-TEX® Standard 100 (Textile Safety and Chemistry)
    • EN 71-3 (European Norm for Toy Safety—Migration of Elements)
    • REACH Chemical Safety Assessment for Azo Dyes and Pigments
    • ISO 14001:2015 (Environmental Management for Dye Houses)

    Typical usage ratio

    • 3–10% by mass in the initial colorant reaction blend. Adjustment occurs for deeper hues or technical applications requiring enhanced lightfastness in synthetic leather or technical fabrics.

    Downstream process integration

    • Enters the halogenation or base-catalyzed nucleophilic addition stage for production of chlorinated pyridine-based dyes and pigments. Frequently reacts with aromatic or heterocyclic amines to form target molecules with unique chromatic properties.

    Final product types

    • Fiber-reactive dyes for synthetic textiles
    • UV-resistant technical pigments in coatings
    • Digital textile printing dyes for industrial printers
    • Special effect colorants for automotive coatings

    4. Electronic Chemicals—Functional Material Synthesis

    Manufacturers of liquid crystal precursors and OLED intermediates source 5,6-Dichloronicotinic Acid for integration into functional aromatic frameworks. Electronics sector formulators require controlled impurity profiles for downstream conductivity, emission, and molecular alignment in displays and advanced sensors.

    Industry compliance standards

    • IEC 62474 (Material Declaration for Electronic Industry)
    • RoHS Directive (EU 2011/65/EU – restriction on hazardous substances in electronics)
    • ISO 9001:2015 (Quality Control for Advanced Materials)
    • TOKYO Electron Supplier Quality Assurance

    Typical usage ratio

    • 1–4% of reaction solution volume, occasionally higher for multi-ring synthesis. Designers optimize input based on electronic properties required in final component, such as charge transfer and photoactivity.

    Downstream process integration

    • Raw input at aromatic nucleophilic substitution or Suzuki coupling junction for constructing key pyridine-based mesogens. Applied pre-purification and quality checks against ultra-trace metal contaminants and halide residues.

    Final product types

    • Precursor liquid crystal monomers for TFT-LCD manufacturing
    • OLED emitter material intermediates
    • Specialty photoactive coatings for electronic devices
    • Sensors and bio-electronic film components
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    Certification & Compliance
    More Introduction

    5,6-Dichloronicotinic Acid: A Practical Perspective from the Manufacturer’s Floor

    Understanding the Product at Its Core

    Our daily work revolves around building better chemical foundations for industries that demand reliability and consistency each time. Among our crop of specialty chemicals, 5,6-Dichloronicotinic Acid stands out for those who need more than just a commodity. From years developing and producing this compound at scale, we have come to understand the ins and outs not only of the molecule itself, but of the real-world needs that drive its application. Our teams focus on what chemists, formulators, and engineers genuinely look for – reproducible quality, observable performance, and clear differences from similar intermediates.

    Taking a Closer Look: Model and Specifications We Deliver

    The most common model we supply aligns with the requirements set by pharmaceutical and fine chemical manufacturing. We produce high-purity 5,6-Dichloronicotinic Acid in white to off-white crystalline powder form. Laboratory analyses back every batch, and regular chromatographic checks during the run rule out unwanted isomers or contaminants. Most clients who visit our facilities or request technical sheets ask directly about moisture content, melting point, and residual solvents. We handle each parameter as a matter of daily practice, not as a compliance afterthought.

    Producing several tons each month has taught us to focus on the points that affect downstream application most. Moisture below 0.5% prevents caking in storage. Assay by HPLC routinely exceeds 99%. We work closely with end users to monitor any traces of chlorinated byproducts or volatile organics, as residues in starting materials often lead to costly reprocessing or purification at the next stage. These checks support our own processing efficiency as much as our customers’ success.

    Real-World Usage: Lessons Learned in Application

    5,6-Dichloronicotinic Acid fills a niche across the fine chemical, pharmaceutical intermediate, and agrochemical sectors. In most syntheses, this compound enters the process as a key halogenated pyridine building block. Customers often rely on us for accurate information about reactivity, solubility, and compatibility with different solvents – details that make or break a scale-up.

    Repeated feedback from R&D teams points toward clean coupling at the carboxylic acid moiety and robust behavior in cross-coupling reactions. Over the years, we have seen that tweaks to solvent systems or minor deviations in batch purity easily result in yield loss or troublesome side-reactions. Our technical teams have collaborated directly with process chemists to fine-tune many of these conditions, minimizing troubleshooting and reducing unnecessary delays at the pilot or production scale.

    Most application routes utilize 5,6-Dichloronicotinic Acid for constructing functionalized heterocycles, especially where resistance to metabolic breakdown is a factor. We have documented cases from partners in both crop protection and human health sectors, where the durability and selectivity of this intermediate carried through into the final compound’s performance. Case notes from several agrochemical producers mention successful use of our product in routes that later passed regulatory review, standing up to purity and trace-element testing.

    What Sets This Product Apart from Related Chloronicotinic Acids

    Not all chloronicotinic acids are cut from the same cloth. The substitution pattern — chlorines at the 5 and 6 positions — leads to a considerably different set of reactivity and downstream properties compared to the 2,3- or 3,5-isomers. Practically speaking, we have seen firsthand how this structure influences both transformation reactivity and environmental stability.

    Many new clients arrive with prior experience using 2,6- or 3,5-dichloronicotinic acid in synthetic plans, only to run into selectivity or isolation issues further down the route. The 5,6-isomer simplifies downstream purification, particularly when constructing fused bicyclic compounds or performing C–N and C–C couplings. This attribute repeatedly surfaces in feedback from trusted collaborators in both pharmaceuticals and specialty materials, where time spent purifying intermediates is often counted by the hour or day. Over the course of years, we have tracked time-to-product metrics in several projects and consistently found measurable improvements with the 5,6-disubstituted scaffold.

    Clients gravitate toward this compound when the synthetic endpoint demands a balance of high aromatic stability and well-restrained electron flow — two qualities the 5,6-dichloro substitution reliably delivers. We have also seen a marked reduction in environmental persistence concerns compared to mono-chlorinated acid variants, likely owing to the way electron-withdrawing chlorines at these positions facilitate downstream degradation outside the lab. Some partners in regulatory-heavy industries report that their risk assessments and soil degradation modeling show more favorable data for 5,6-Dichloronicotinic Acid-based products. We have supported these efforts through analytical backup and shared process flow data.

    Competitive Positions and What Reliability Looks Like on the Production Floor

    In our own experience, consistency in production trumps almost every other metric. There’s nothing theoretical about the consequences of a misrun — lost man-hours, wasted raw materials, shipment delays, and repurposed reactor time add up quick. We do not see 5,6-Dichloronicotinic Acid as a commodity, despite its availability from various sources worldwide. The details that set apart real manufacturers from resellers show up most clearly in how issues are prevented and addressed.

    Over the past decade, we have responded to multiple requests for help from downstream firms struggling with uneven quality, unexpected side reactions, or shipment shortages from resellers. Often, their prior sources offered materials with wide purity specifications or inconsistent physical properties. Our direct-of-origin process control, from raw material input to final filtration, allows for reproducibility and rapid troubleshooting. Internal batch records, spectroscopic data, and impurity profiling go out with every order after final QA clearance, not just by request. These files have helped more than one multinational partner track back a missed process target to a single aberrant batch, demonstrating why direct engagement with the actual manufacturer matters.

    We also emphasize transparency in production scheduling and batch release dates. During pandemic supply disruptions and raw material shortages, our stock management protocols allowed us to keep core customers supplied without last-minute rationing or unexpected price spikes. Lessons from these high-stakes periods now inform our daily inventory practices, leading us to invest in buffer stock and forward contracts for critical reagents. Our technical and supply teams collaborate under one roof, and issues are raised quickly and openly, not buried in unrelated departments. These real-world controls set our offering apart for demanding partners.

    Building Practical Solutions: Addressing Common Challenges in Application

    Chemical intermediates rarely behave perfectly outside the controlled world of R&D. Scale brings out new impurities, changes in crystallinity, adsorption issues, and transportation headaches. Our teams have been called in more than once to address customer challenges around solubility in polar solvents, filtration slow-downs, or unexpected byproduct formation in pilot trials.

    We take a hands-on approach. For solubility or polymorph questions, our support staff can supply particle size distribution, alternate recrystallization guidance, or solubility profiles in a variety of process solvents. These practices go above generic COAs and speak to practical batch operation. On at least three occasions, our onsite lab has adjusted micronization or drying protocols to match a client’s formulation needs. One recent case involved shifting the drying endpoint to deliver a free-flowing powder that eliminated bridging in their transfer lines, cutting transfer time and dust losses.

    Process impurities represent another frequent sticking point. Sulfonated byproducts, residual halides, or multi-chloro substitution errors can slip through less stringent supply chains. Internally, we push to catch these at the earliest possible stage, using targeted TLC and spectral analysis during crude and clean-up stages. In partnership with downstream clients, we’ve supplied reference spectra to cross-check new methods or to support regulatory filings in new markets. By documenting and troubleshooting these impurities as a normal element of scale operation, we reduce the volumetric drag and yield loss our partners might otherwise bear. The cost of going back and fixing mistakes has taught us to do it right from the start, and to treat QA oversight as central to our offering.

    On the logistics side, we recognize that timely delivery means more than just booking a freight forwarder. Packaging that withstands humidity swings, shipping delays, and warehouse stacking has made a tangible impact on product acceptance. Field reports make it clear: damage claims and rejections dropped after our teams rolled out reinforced drum liners and double-bagging. We retain real-world data on shipping stability under different seasonal conditions, adjusting our protocols with each round of lessons learned.

    Interfacing with Innovation: Supporting Next-Generation Applications

    Some of the most interesting projects involve adapting classic intermediates like 5,6-Dichloronicotinic Acid to new chemical processes. As new synthetic methods take hold—metal-catalyzed couplings, continuous flow operations, or bio-catalytic transformations—the exacting needs for clean starting materials have only intensified. We maintain tight linkages with academic labs and industrial R&D, supplying samples and batch information to support pre-clinical and pilot-scale campaigns. The feedback loop goes both ways: one industrial partner shared improvements in carboxylate-directed metalation using our acid as a substrate, optimizing catalyst lifetimes in their plant run.

    We’ve also responded in real time to requests for scale-up assistance, whether by providing reactivity data, confirming impurity carryover, or adapting packaging for dosing in automated feeds. Quick reactions save time, minimize runaway costs, and keep launch timelines on track for both new and established downstream products. Our staff attends industrial forums and workshops, both to share internal learnings and to pick up new perspectives from across the supply chain.

    Safety, Sustainability, and Responsibility: A Look Beyond the Kilograms

    Manufacturing a compound for global use brings far more responsibility than just consistent supply. Safety stands at the top — both in our plants and in our customers’ processes. We maintain regular process hazard analyses, waste stream audits, and offer detailed handling guidance based on data from our own plant floors. Our operators wear more than regulatory badges; they signal up-and-down process issues, identify possible upsides from procedural tweaks, and take direct responsibility for safe handling and accident prevention. Practical safety steps have proved their worth after reviewing long-term incident data. Evacuation drills, triple-lock reactivity checks before charging, and open bottle logbooks have reduced close calls and downtimes.

    We also embrace sustainability as a concrete, daily challenge. Halogenated intermediates demand care both upstream and downstream. Rather than treating waste minimization as a green-washing buzzword, we track chlorinated effluent specifically and have invested in multi-stage purification before discharge. These investments translate to fewer complaints from neighbors, smoother permitting inspections, and lower long-term operating costs. On the customer end, we regularly assist with downstream fate analysis, supporting both registration and environmental assessments for new molecules.

    Regulatory landscapes never stay static. Our senior chemists and compliance teams invest significant hours each quarter to stay at the front of new REACH, TSCA, and Asian substance requirements. Customers appreciate timely, realistic advice on where new documentation or loss-on-drying data will be needed, rather than after a missed documentation deadline. Years of direct regulatory engagement let us cut through guesswork, focusing on exactly what authorities will expect and providing it before it becomes an emergency. This tradition of preparedness saves money and administrative stress for everyone involved.

    Relationship-Building: Partnering Over the Long Haul

    No two customers use 5,6-Dichloronicotinic Acid in exactly the same way, which means off-the-shelf answers rarely cover every need. The relationships we build — from initial project evaluation, through delivery, and into process improvement — allow us to offer exactly the support our partners need. Our technical team keeps open channels for feedback. This two-way street uncovers unexpected applications, process pain points, and collaborative solutions to technical setbacks.

    In more than one case, our partner’s technical team and ours sat together across time zones to unravel production glitches or move from lab scale to thousands of liters without missing a beat. Understanding each other’s process windows, tolerance limits, and risk aversion has led to mutually beneficial development, course corrections, and even incremental innovations in packaging, drying, and feed techniques.

    This commitment goes beyond the contract. When process improvement uncovers a way to save on catalyst, solvent, or time, we pass that along. When a regulatory change alters required documentation or product composition, our compliance teams coordinate so transitions run smoothly, avoiding last-minute disruptions. Many of our oldest partners started as first-time buyers and grew with us, trusting the consistency and expertise that come from true manufacturing know-how.

    The Takeaway: Why Choose Our 5,6-Dichloronicotinic Acid

    Over long years of manufacturing, a product like 5,6-Dichloronicotinic Acid is less a simple offering and more a commitment to shared outcomes. What our teams offer goes well beyond metric tons and certificates of analysis. We engineer consistency batch to batch, build partnerships, support troubleshooting, and enable the flexibility that complex synthesis demands.

    We have seen the difference hands-on support, traceable quality, and technical innovation can make – not just at our own site but up and down the value chain, wherever this key intermediate is put to use. From pharmaceutical discovery to industrial crop protection, our commitment drives performance, compliance, and enduring value. As the needs and technology of chemistry evolve, we work in step with our partners to keep operations robust and outcomes reliable.