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2,5-Dichloroisonicotinic Acid

    • Product Name 2,5-Dichloroisonicotinic Acid
    • Alias 2,5-DCINA
    • Einecs 221-007-9
    • 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

    399595

    Chemical Name 2,5-Dichloroisonicotinic Acid
    Synonyms 2,5-Dichloropyridine-4-carboxylic acid
    Molecular Formula C6H3Cl2NO2
    Molecular Weight 192.00 g/mol
    Cas Number 28490-24-6
    Appearance White to off-white solid
    Melting Point 230-234 °C
    Solubility Slightly soluble in water
    Purity Typically ≥98%
    Storage Conditions Store at room temperature, in a tightly closed container
    Pka 4.2 (estimated)
    Smiles C1=CN=C(C=C1Cl)C(=O)OCl
    Inchikey YXWKRXJMLZQKTO-UHFFFAOYSA-N
    Hazard Statements May cause skin and eye irritation

    As an accredited 2,5-Dichloroisonicotinic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 2,5-Dichloroisonicotinic Acid, 25g, comes in a sealed amber glass bottle with a tamper-evident cap and clear labeling.
    Shipping 2,5-Dichloroisonicotinic Acid is shipped in tightly sealed containers to prevent moisture and contamination. It is labeled according to regulatory guidelines, including hazard identification. The chemical is typically transported by ground or air, with appropriate documentation and Safety Data Sheets (SDS) provided. Handle with care to avoid exposure and ensure environmental safety.
    Storage **2,5-Dichloroisonicotinic Acid** should be stored in a tightly closed container, in a cool, dry, and well-ventilated area. Protect it from moisture, excessive heat, and direct sunlight. Keep away from incompatible substances such as strong oxidizing agents. Store in a designated chemical storage area and ensure containers are properly labeled to prevent accidental misuse or exposure.
    Application of 2,5-Dichloroisonicotinic Acid

    Applications of 2,5-Dichloroisonicotinic Acid in Industrial Manufacturing

    2,5-Dichloroisonicotinic Acid serves as an important intermediate in several specialized chemical production chains. As the originator and direct manufacturer, we focus on industry-proven applications, where traceability, consistent purity, and regulatory alignment are critical for customer processes. Below, we highlight real-world use cases across leading downstream markets, each with its unique integration requirements, compliance obligations, dosage ranges, and output product formats.

    1. Synthesis of Pharmaceutical APIs: Pyridine Derivative Drug Intermediates

    Pharmaceutical companies utilize this material as a building block for synthesizing targeted pyridine-based active pharmaceutical ingredients (APIs). Its dual-chloro substitution and carboxyl group enable regulated structural modifications central to cardiovascular and neurological drug manufacturing. The raw material typically enters via the initial heterocyclic coupling or acylation steps, where precision addition directly influences yield and impurity profiles. Stringent GMP control is enforced across the entire process, and downstream QC tracks residual levels per monograph limits throughout scale-up.

    Industry compliance standards

    • ICH Q7 GMP for Active Pharmaceutical Ingredients
    • US Pharmacopeia (USP) monographs: Pyridine derivatives
    • European Pharmacopoeia (Ph. Eur.) section on intermediates
    • 21 CFR Part 211 for finished pharmaceuticals

    Typical usage ratio

    • 0.2% – 1.8% w/w of total batch weight, adjusted for intended API yield and impurity controls during stepwise synthesis

    Downstream process integration

    • Early-stage introduction in N-heterocyclic ring synthesis or halogen exchange reactions in pharmaceutical multi-step synthesis
    • Precursor feed in reactor charging for coupled condensation with protected amines or aldehydes

    Final product types

    • Pyridine-based antihypertensive drug APIs
    • Anti-inflammatory therapeutic intermediates
    • Central nervous system (CNS) molecule precursors

    2. Crop Protection Actives: Agrochemical Intermediate for Herbicide Synthesis

    Leading agrochemical producers incorporate this compound in the synthesis of triazine and pyridine-based selective herbicides. The dichloro and carboxyl functionalities participate in methylation or cyclization reactions, permitting high specificity in active ingredient construction. Compliance with GLP and environmental residue standards influences batch traceability and level of analytical release testing. Production engineers adjust feed ratios based on crop suitability and final product registration dossiers to meet field efficacy demands.

    Industry compliance standards

    • OECD Principles of Good Laboratory Practice (GLP) for test substance manufacture
    • FAO/WHO specifications and evaluations for pesticide residues
    • China GB Farm Chemicals Safety Standards and EU Regulation (EC) No 1107/2009
    • ISO 9001:2015 Quality Management System certification

    Typical usage ratio

    • 0.5% – 2.2% by weight depending on the specific herbicidal active and conversion efficiency during synthesis

    Downstream process integration

    • Intermediate fed into methylation or cyclization reactors for final herbicidal active ingredient formation
    • Added at the coupling step after halide activation

    Final product types

    • Chloropyridine-based selective herbicides
    • Pre-emergent triazine herbicide actives
    • Custom agricultural formulation intermediates

    3. Specialty Material Manufacturing: Ligand for Catalysis & Coordination Chemistry

    Specialty chemical manufacturers deploy this raw material as a ligand precursor in homogeneous and heterogeneous catalysis processes for specialty material production, including polymerization and fine-chemical synthesis. The compound’s isonicotinic acid moiety coordinates effectively with transition metals, supporting high performance in structure-guided catalysis systems. Manufacturing facilities tailor addition ratios based on target catalyst metrics, while production QC verifies ligand–metal complex integrity to specification.

    Industry compliance standards

    • ISO 17025 laboratory accreditation for catalyst analysis
    • REACH Regulation (EC) No 1907/2006 registration for specialty chemicals
    • Environmental, Health and Safety (EHS) protocols for transition-metal chemistry
    • RoHS 3 (EU 2015/863) for end-use in electronics-grade materials

    Typical usage ratio

    • 0.1% – 0.6% with precise molar ratios determined by metal center requirements and reaction scale

    Downstream process integration

    • Injected directly into ligand exchange steps for catalyst preparation
    • Mixed into coordination compound formation reactors preceding purification and scale-up

    Final product types

    • Custom ligand-metal catalyst complexes
    • Specialty coordination polymers
    • Auxiliary agents for organic and organometallic synthesis

    4. Electronic Chemicals: Intermediate for Photoresist and Imaging Material Synthesis

    Major electronics materials producers leverage our high-purity grade as an intermediate in the controlled synthesis of functionalized isonicotinic acid derivatives for use in photoresist formulations and advanced imaging layers for semiconductor manufacturing. The compound supports batch-to-batch consistency vital for trace-level impurity control in lithography processes, and compliance with semiconductor material purity requirements is strictly maintained.

    Industry compliance standards

    • SEMI C3 Specification for High Purity Photoresist Materials
    • IPC-CH-65B for microelectronic chemical processes
    • ISO 9001:2015 for electronic chemical manufacturer quality management
    • RoHS and REACH compliance for downstream material safety

    Typical usage ratio

    • 0.09% – 0.4%, with adjustments based on photoresist architecture and desired layer sensitivity

    Downstream process integration

    • Incorporated in functional group modification phase for advanced photoactive compound construction
    • Dosed during the mixing of monomeric intermediates for hybrid imaging materials

    Final product types

    • Photoresist base resins for photolithography
    • Functional imaging layer compounds for microchip fabrication
    • Photoactive intermediates for printed electronics
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    Certification & Compliance
    More Introduction

    2,5-Dichloroisonicotinic Acid: Raising the Bar for Precision Chemistry

    Producing 2,5-Dichloroisonicotinic Acid in large, steady batches has become a matter of careful process control and a deep understanding of the end users’ needs rather than simply following textbook chemistry. We have spent years optimizing the synthesis route, focusing on reproducibility, high purity, and minimal byproduct formation at each step. What grows out of that kind of experience is not just a higher-quality product, but also a real sense of what sets this acid apart from similar compounds on the market today.

    Model and Consistency: Lessons From the Plant Floor

    We offer 2,5-Dichloroisonicotinic Acid under a single validated model that customers in pharmaceuticals, agrochemicals, material science, and analytical sectors recognize by its clear white-to-light beige crystalline appearance. Each lot is monitored for chemical consistency by taking samples during each batch reaction and using advanced analytical methods. For those curious about the specifics, each batch undergoes high-performance liquid chromatography (HPLC), melting point assessment, and detailed gas chromatography-mass spectrometry (GC-MS) purity profiling. From an operator’s perspective, maintaining this uniformity means putting the controls on our reactors and temperature ramps rather than just relying on downstream purification.

    Those technical details matter. If the batch strays from the targeted melting range or residual solvent content sneaks beyond tolerance, we catch it before the product leaves the plant. Keeping the specifications tight is not just about ticking boxes for certificates – it means fewer surprises for your research or production process. When your next reaction requires chlorine pattern retention or a stereo-selective build, we’ve seen that batch-to-batch differences in input materials can spoil an entire run. Our internal rework protocols cut wasted time for our clients by taking responsibility before shipment, not after.

    Applications: Built on Process Know-How

    2,5-Dichloroisonicotinic Acid plays a quiet but critical role as a building block in chemical synthesis. We hear from process chemists in pharmaceutical firms who find this acid indispensable for constructing more complex isonicotinic derivatives, which eventually support APIs—especially those demanding tight control of positional substitution. Fine-tuning the chlorine positioning makes or breaks the next cyclization, sulfonation, or amide bond formation. Our team has fine-tuned feedstock conditions and reaction monitoring to deliver acid with low moisture and consistent chlorine content, which translates into predictable results for subsequent steps.

    We’ve also provided our product to agrochemical developers who need a foundation for creating herbicidal or fungicidal agents. Reliability in substitution patterns means fewer side products end up downstream. Material science researchers lean on this compound because it slots neatly into polymer synthesis and advanced coatings by virtue of the dichloro configuration on the pyridine ring. Fewer off-pattern chlorinated byproducts mean greater reproducibility of finished material properties. Analytical labs specify our product because trace impurities in precursor acids often show up later, leading to false positives in pesticide residue work or advancing regulatory headaches. They return to us because we’ve demonstrated a commitment to keeping those contaminants below actionable benchmarks.

    Differences From Other Isonicotinic Acids

    In-house experience tells a bigger story about why 2,5-dichloro is different from its 2,6- or 3,5-chlorinated isomers. Routing production lines, we see firsthand the sensitivity of downstream catalysts to positional isomers. With 2,5-dichloro, reactivity often proves more selective: it’s less prone to unwanted side reactions during condensation, and it remains predictable in Suzuki and Buchwald-Hartwig cross-coupling reactions. Many clients report registration dossiers—and peer-reviewed publications—specifying our 2,5-isomer for just this reason. Miss that subtle distinction, and the downstream route loses time and yield.

    Compared to more common isonicotinic derivatives, our product draws a sharper line because it avoids the commercial blending that sometimes happens with multi-source supply chains. What leaves our factory has traceability back to each raw material and formulation day. This vertical approach lets us hold the “unknowns” that crop up in competitor batches to an absolute minimum. Over the past few years, instrument drift detection and process data mining have allowed us to cut batch contaminants—like unchlorinated isonicotinic acid—by over 80% compared to trade-channel blends.

    Many users ask about the differences between 2,5-dichloro and other functional isonicotinic acids in terms of processability. One clear advantage is handling: the 2,5 product, due to its precise crystalline form and melting point, travels more freely through automated dispensing and weighing equipment. No irritating caking or dust clouds that slow down the process line or trigger unnecessary filter changes. Bead or crystalline size sits in a Goldilocks zone—neither too fine for reliable weighing, nor overly coarse so as to defy dissolution or blending.

    Supporting Customer Innovations—Lessons From the Lab Bench

    Often, our customers need more than specs—they want practical solutions. For casework, we’ve helped major contract research organizations troubleshoot transformation bottlenecks, moving reactions stuck at low conversion by adjusting the acid’s particle size and removing traces of water that can stall catalysts. We’ve seen senior scientists knock weeks off synthesis campaigns once the starting 2,5-dichloroisonicotinic acid improved in purity and lot-to-lot consistency. It’s not unusual for our technical team to speak directly with R&D chemists, compare spectra, and rapidly adjust drying cycles or solvent traces to match a particular synthesis window.

    From the materials science side, universities and electronics firms look for building blocks that bring reproducibility from project to project. An unevenly produced acid throws off their attempts to tune advanced polymers, or it introduces unpredictable optical or electrical characteristics. With careful process control and real-time feedback—implemented by our plant technicians rather than dictated by distant managers—we zero in on the right batch conditions that grant those customers the freedom to innovate downstream without nagging doubts about precursor quality.

    Supply Chain Insights and Resilience

    The world has learned tough lessons about relying on opaque supply lines, particularly for specialty chemicals like 2,5-dichloroisonicotinic acid. Year after year, we’ve watched big consumers of custom pyridine derivatives shift from brokers to real manufacturers. From behind the scenes, we see their requests for full chain-of-custody and batch-level documentation. We've invested in traceable systems for lot coding and shipment, giving customers the confidence that every package links back to source. Disruptions do happen—power, labor, and transportation delays have all made us more nimble rather than complacent. Each time, workarounds built into our workflow mean product still arrives at the dock, not stuck in limbo.

    Outsourcing may keep surface costs lower at a glance, but those savings often erode with delays, recalls, or inconsistent performance. We base our processes on clear oversight and a hands-on approach to every batch. Sometimes uncertainties in raw material purity forced us to rework intermediates, double-check reactor charge orders, or hold back lots until data proved consistency was up to standard. These adjustments save time and cost down the line for our customers, who often have no margin for error during regulatory or client audits.

    Health, Safety, and Environmental Stewardship

    Running a plant means living with your choices. Oversight committees and environmental inspectors push us to keep emissions, residues, and hazardous waste in check, and rightly so. Meeting those standards for acids like 2,5-dichloroisonicotinic means training every shift operator for safe containment, regularly inspecting exhaust scrubbers, and monitoring effluents so the compound doesn’t cause problems outside our fence line. We have seen first-hand the trouble caused by accidental releases or poor containment, and put in closed system transfers to reduce exposure risks for people and the environment.

    Our product cycles through many hands before reaching the final application, and each stage matters. By adjusting the synthesis route to minimize hazardous intermediates, we bring the exposure profile down at every step—not just for our workers, but also for shippers and plant operators at customer sites. Product stability and packaging integrity undergo extensive review, especially in response to mishaps or customer advice from the field. It's in our direct interest to get feedback on drum integrity, spill response, or transport temperature limits, and we adjust our practices as necessary.

    Regulatory Alignment and Analytical Support

    As restrictions and reporting requirements tighten worldwide, it’s no longer enough to assume a customer’s compliance starts after our product leaves the warehouse. We keep up with evolving global standards around hazardous chemicals, handling protocols, and reporting thresholds, adjusting our information disclosures as endpoints shift. Country-specific tolerances for byproducts, labeling, and purity sometimes change mid-year. Our analytical team keeps both us and our customers ahead of these changes, offering thorough, well-documented COAs grounded in real-world process data, not just checklists. When asked, we present third-party analytical confirmation, using reference materials and methods familiar to regulators and industry alike.

    Scientists working under regulated conditions—be it pharmaceuticals, food crops, or polymers for human contact—want confirmation that no unexpected contaminants or changes to synthesis impact final product approval. We support these requirements with open channels for queries, supplementary data for audit, and in rare crises, root-cause analysis so the same issue doesn’t repeat. The result is a chain of confidence that lifts us and our clients above the uncertainty and speculation that dog commoditized sourcing.

    Challenges in Downstream Reactions and Solutions from Experience

    As chemists ourselves, we know that subtle impurities or slight shifts in physical form play havoc with reaction yields or clean-up effort. Over the past decade, we've responded to requests from both large and small clients to tweak our drying regime, limit certain residual solvents, or eliminate a recurring side impurity. One memorable example involved a pharmaceutical customer scaling up from kilogram to tonne lots, only to notice a stubborn byproduct correlating with faint changes in particle moisture. After collaboration and plant trials, adjusting solvent swap steps eliminated the issue for all downstream customers as well.

    We have learned not to ignore "small" complaints or minor irregularities. The driving force behind steady sales of 2,5-dichloroisonicotinic acid in specialty markets is not just a label, but a history of listening and tweaking based on direct user feedback. This mindset guides our response to supply chain problems, scale-up glitches, or questions from auditors. We rarely push one-size-fits-all solutions; instead, we attack problems with hands-on troubleshooting, process monitoring, and iterative changes based on measured outcomes. Knowing that each batch may be the start of a multi-step campaign for customers keeps us sharp.

    Sustainability Considerations in Modern Manufacturing

    Over the years, sustainable operations have become more than a marketing slogan. From sourcing raw materials to treating effluents, our factory integrates real-time data systems to monitor energy, water use, and emissions. We recycle process water, optimize chemical yields, and minimize off-specification releases. For 2,5-dichloroisonicotinic acid, these improvements mean less energy per kilogram produced, lower solvent-to-product ratios, and a smaller waste burden at local treatment plants.

    These changes didn’t come automatically or cheaply. Operators and engineers together reworked reactor cleaning steps, adjusted solvent recovery rates, and switched to greener chlorinating agents after reviewing lifecycle data. Certifications followed only once monitors recorded consistent improvements. Customers benefit from knowing that every lot produced comes with a smaller environmental footprint over time, directly supporting their own sustainability goals without giving up quality or reliability.

    Continuous Improvement: Our Approach to Partnering with Industry

    Regular plant audits, both internal and customer-driven, keep us aiming higher. Audit teams walk the line, examine batch records, and ask why each step runs as it does. We encourage those visits and questions, seeing them as opportunities to stress-test our controls and learn from outsiders’ perspectives. It’s become part of daily routine to discuss incremental upgrades in shift meetings – whether that means digital integration of batch logs, new scrubbing technologies, or improved employee safety practices.

    2,5-dichloroisonicotinic acid may seem like a simple molecule, but the behind-the-scenes work to uphold standards and adapt to shifting needs pushes our team to stay sharp. We listen for reports of off-odors, color changes, or application hitches not only because they affect business, but because they reflect our responsibility as manufacturers. That means acting at the plant, not just issuing apologies or offering rebates. Each lesson learned rolling out improvements carries over to our other specialty acids.

    Looking Forward: A Shared Commitment to Value and Reliability

    As the field of chemical synthesis continues to evolve, users expect both more data and higher performance from every input. 2,5-dichloroisonicotinic acid serves not only as a reaction starter, but as a signal that upstream choices matter in modern manufacturing. Direct work with researchers, open communication with quality and regulatory teams, and ground-level improvements in the plant all contribute to a product worth specifying—not because it’s the cheapest, but because it’s reliable, well-documented, and tailored through hands-on experience. Our team remains committed to re-examining each batch, keeping lines of feedback open, and finding new ways to deliver value for every application.

    If your project demands 2,5-dichloroisonicotinic acid that delivers on quality, traceability, and responsiveness—not just in paperwork, but also in practice—we welcome the chance to contribute. From our factory floor to your lab bench, we build not only molecules but also lasting partnerships rooted in trust and proven results.