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2-Methoxy-4-Nitrobenzoic Acid

    • Product Name 2-Methoxy-4-Nitrobenzoic Acid
    • Alias 2-Methoxy-p-nitrobenzoic acid
    • Einecs 226-026-0
    • 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

    260768

    Name 2-Methoxy-4-Nitrobenzoic Acid
    Cas Number 604-02-4
    Molecular Formula C8H7NO5
    Molecular Weight 197.15 g/mol
    Appearance Yellow crystalline solid
    Melting Point 195-198°C
    Density 1.52 g/cm3
    Solubility In Water Slightly soluble
    Pka 3.4
    Smiles COC1=CC(=CC=C1C(=O)O)[N+](=O)[O-]
    Inchi InChI=1S/C8H7NO5/c1-14-7-4-5(9(12)13)2-3-6(7)8(10)11/h2-4H,1H3,(H,10,11)

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

    Packing & Storage
    Packing Amber glass bottle containing 50 grams of 2-Methoxy-4-Nitrobenzoic Acid, tightly sealed, with hazard labels and detailed product information.
    Shipping 2-Methoxy-4-Nitrobenzoic Acid is shipped in tightly sealed containers to prevent moisture and contamination. It should be packed in accordance with local and international chemical transport regulations, typically as a non-flammable, non-toxic solid. Shipping is usually by ground or air, clearly labeled with all relevant hazard and handling information.
    Storage 2-Methoxy-4-Nitrobenzoic Acid should be stored in a tightly closed container, in a cool, dry, and well-ventilated area. Protect it from direct sunlight, moisture, and incompatible substances such as strong oxidizing agents. Store at room temperature, away from sources of ignition or heat, and ensure proper chemical labeling for safety. Use appropriate personal protective equipment when handling.
    Application of 2-Methoxy-4-Nitrobenzoic Acid

    Applications of 2-Methoxy-4-Nitrobenzoic Acid in Industrial Manufacturing

    Our 2-Methoxy-4-Nitrobenzoic Acid supplies global manufacturers with a specialty intermediate for precise downstream applications. Below, we break down its industrially validated uses, detailing sector-specific compliance, formulation practice, integration phases, and real-world product outputs based on our customers’ dedicated manufacturing needs.

    1. Specialty Dyes Synthesis for Advanced Textile Processing

    Textile dye manufacturers incorporate 2-Methoxy-4-Nitrobenzoic Acid as a key intermediate in the creation of high-performance azo and anthraquinone dyes. The compound’s unique substitution pattern supports controlled diazotization and coupling reactions to engineer shade intensity and fastness required for premium synthetic fabrics. Formulators adjust concentrations to meet strict light and wash fastness criteria stipulated by technical textile standards.

    Industry compliance standards

    • OEKO-TEX® Standard 100
    • ZDHC MRSL V3.0 (Zero Discharge of Hazardous Chemicals)
    • ISO 105 series (Color Fastness Tests)
    • EU REACH Regulation (EC) No 1907/2006

    Typical usage ratio

    • 0.8–2.5% by molar equivalence relative to total dye precursor in batchwise dye synthesis; exact input depends on desired chromophore density and target shade depth for end fabric

    Downstream process integration

    • Input during early coupling or condensation reactions under controlled pH and temperature, followed directly by purification, milling, and subsequent formulation into standardized dye dispersions

    Final product types

    • Acid and disperse dyes for polyester and nylon textile applications
    • Specialty reactive dyes for synthetic sportswear and technical fabrics
    • Brilliant shade colorants for home textiles requiring high washing resistance

    2. Advanced Pharmaceutical Intermediate for API Synthesis

    Producers in the pharmaceutical sector depend on this acid as a structurally defined building block when assembling select non-steroidal anti-inflammatory agents and related API scaffolds. Tightly regulated multi-step organic syntheses harness the methoxy-nitro arrangement as a precursor for ester, amide, or reduction transformations, optimizing both yield and impurity profiles under ICH-compliant protocols.

    Industry compliance standards

    • ICH Q7 (Good Manufacturing Practice for Active Pharmaceutical Ingredients)
    • USP–NF Monographs for relevant downstream API compounds
    • EDQM CEP certification framework
    • GMP (EudraLex Volume 4)

    Typical usage ratio

    • 95–120% molar relative to downstream target, with ratio adjusted for stoichiometry in multi-step syntheses and determined by process development validation for maximum yield and minimum byproducts

    Downstream process integration

    • Initiation phase as a core substrate in nitration and esterification, entering as the principal aromatic acid precursor in custom synthetic routes for non-salicylate NSAIDs and intermediate platforms

    Final product types

    • API cores for advanced anti-inflammatory medicines
    • Custom intermediates for clinical trial active ingredients
    • Pharmaceutical reference standards distributed to formulation labs

    3. Synthesis of Photographic Chemical Intermediates

    The photographic materials industry uses this acid to manufacture developer modifiers and color couplers in silver halide-based imaging films and papers. By entering the reaction sequence as an aromatic intermediate, it enables precision control of coupling rates, image granularity, and image dye stability—meeting stringent requirements for archival photo materials and imaging plates in diagnostic applications.

    Industry compliance standards

    • ISO 18902:2013 (Imaging materials – Photographic films and papers)
    • ANSI IT9.9–1996 (Stability of color photographic images)
    • RoHS Directive (2011/65/EU)
    • Facility GMP for chemical synthesis (ISO 22716:2007 where relevant)

    Typical usage ratio

    • 1.0–2.8% by weight of total coupler/precursor content, optimized for developer concentration and batch volume in emulsions and coupler dispersions

    Downstream process integration

    • Introduced during the fine organic synthesis stage prior to purification and blending with color-forming compounds, followed by microdispersion into gelatin-based emulsions for film and paper coating

    Final product types

    • Color couplers for professional and archival photographic films
    • Precision developer additives for medical X-ray plates
    • Imaging paper color stabilizers for specialty photographic print stock

    4. Chemical Intermediate in Electronic Material Synthesis

    Electronic chemical manufacturers utilize 2-Methoxy-4-Nitrobenzoic Acid in specialty processes for synthesizing charge-transfer complex agents, organic semiconductors, and select photoresists. Its integration allows designers to fine-tune electron-donating/withdrawing profiles within organic conductive polymers and photo-patternable coatings, ensuring device-level uniformity and electrical response required by major electronics brands.

    Industry compliance standards

    • IPC-4101D (Specification for Base Materials for Rigid and Multilayer Printed Boards)
    • JEDEC JESD625 (Requirements for Handling Electrostatic-Discharge Sensitive Devices)
    • ISO 9001:2015 for Specialty Electronic Chemicals
    • RoHS and REACH substance registration

    Typical usage ratio

    • 0.5–3.0% by mass per formulation batch, tailored for target molecular weight and polymerization conversion in organic resist and semiconductor fabrication; specific input governed by electronic material application

    Downstream process integration

    • Charged to reactor at monomer synthesis or oligomer extension stage, followed by coupled purification and functionalization in controlled cleanroom batches to product-grade purity

    Final product types

    • Specialty photoresists for microelectronic circuit fabrication
    • Organic semiconductor layers for OLED and photovoltaic modules
    • Charge-transfer materials for thin-film transistor applications

    5. Intermediate for Agrochemical Synthesis

    Agrochemical producers select this compound as a core structure in the development of certain herbicide and fungicide precursors, leveraging the molecule’s substitution to direct synthetic transformations that yield bioactive aromatic carboxylate derivatives. Inclusion of this intermediate supports finely tuned grain selectivity and environmental degradation profiles in line with regional registration standards for crop protection.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • US EPA 40 CFR Part 180 (Tolerance for Residues of New Chemicals in Food Commodities)
    • EU Regulation (EC) No 1107/2009 (Plant Protection Products)
    • ISO 9001:2015 with Crop Protection Focus

    Typical usage ratio

    • 1.0–4.0% by molar input for precursor synthesis; adjusted for molecular conversion rates, final product bioactivity, and post-synthesis environmental breakdown validation

    Downstream process integration

    • Charged at the aromatic functionalization phase, subsequently routed through selective reduction, amidation or esterification, and final purification prior to formulation into granules or emulsifiable concentrates

    Final product types

    • Base intermediates for selective herbicides deployed in cereal and vegetable crops
    • Synthetic building blocks for low-residue fungicidal agents
    • Active ingredient pre-products supplied to registered agrochemical formulators
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    Certification & Compliance
    More Introduction

    Introducing 2-Methoxy-4-Nitrobenzoic Acid: Insights from the Manufacturing Floor

    Understanding Our Chemical – Direct from the Production Line

    Every batch of 2-Methoxy-4-Nitrobenzoic Acid we craft reflects years of hands-on experience with aromatic acids and functional group chemistry. This compound, structured as a benzoic acid ring substituted with both a methoxy and a nitro group, stands out not just for the raw formula, but for the deep work that goes into consistent and reliable synthesis. Our process consistently produces a pale yellow crystalline powder, favored by those who require purity and reliable downstream performance. Analytical results from our in-house lab regularily confirm product quality. Our quality assurance team, working right next to the synthesis line, checks melting point and loss on drying for every lot, making sure specs hold up to scrutiny throughout the year.

    Production Approaches and Real-World Value

    Running large-scale synthesis for 2-Methoxy-4-Nitrobenzoic Acid has taught us quite a bit about controlling nitration reactions and managing methoxylation steps. Each production run must hit tight windows for temperature and reagent adds. Straying, even by margins unseen on simple thermostats, results in unwanted byproducts or reduced crop weights. These batch-to-batch lessons have driven multiple improvements in reactor design, such as better agitation and more robust sensors.
    End users, often looking to functionalize benzene rings or modify APIs, depend on us to rule out contamination and unwanted positional isomers. Our crew always runs spot checks for ortho- and meta- impurities by HPLC, backing up these numbers with packed-column GC during process optimization rounds. It's not just paperwork; if these checks slip, our partners in pharmaceuticals, dyes, and advanced materials notice it right away in their own processing rooms.

    Specifications That Matter on the Production Floor

    Our standard model for this compound falls under the C8H7NO5 formula, molecular weight 197.15. In reality, beyond numbers, purity sits around 99% minimum by HPLC, water content rests below 0.5% by KF, and single-melt behavior is checked near 181-183°C. Each bag or drum comes with batch-specific analysis, sourced from instruments one floor above the reactors. These aren’t empty promises; direct feedback from buyers often centers around how little dust, fine clumps, or odd-smelling residues turn up compared to alternative sources. Workers here see clear differences when switching to higher-grade glassware or using fresh solvents, which further improves both appearance and handling qualities.

    Working with 2-Methoxy-4-Nitrobenzoic Acid: Day-to-Day Reality

    In research or manufacturing, every chemist or engineer pays attention to real-world handling. This compound dissolves well in common organic solvents like ether and hot alcohol, making it straightforward to filter, recrystallize, or derivatize on scale. Our logistics engineers focus on packaging that prevents moisture ingress and blocks out dust, since caking can quickly make any benzoic acid derivative tough to work with. Years of responding to feedback from QC labs worldwide has led us to refine not only synthesis, but packing, weight checks, and drum linings.

    Where It Fits: Uses that Drive Innovation

    Customers in drug development, dye manufacturing, and agricultural research look for reliable sources of 2-Methoxy-4-Nitrobenzoic Acid because of its role as an active intermediate. For pharmaceuticals, it acts as a precursor in the production of certain non-steroidal anti-inflammatory drugs and serves in coupling reactions with amines for new chemotype exploration. In dye and pigment lines, the nitro and methoxy groups provide reactive handles for creating complex conjugated systems valued for their colorfast shades. Plant researchers, especially those studying phytochemical pathways, use it to build analogues and probe plant defense mechanisms. Our support team has logged technical assistance calls explaining solvent choices or troubleshooting reaction bottlenecks many times, drawing on past campaign summaries and detailed run logs written by our operators.

    Comparison with Similar Benzoic Acids: Practical Observations

    In the world of substituted benzoic acids, nuance matters. Some clients ask if 2-methoxy-4-nitrobenzoic acid can stand in for the methyl or other nitro analogues. Our chemists have run tests in real reaction environments, not just in theory. A methyl group at the 2-position, such as in 2-methyl-4-nitrobenzoic acid, changes both melting and dissolution patterns, affecting processability. Methoxy substitution at the ortho-position increases electron density and alters reactivity under reduction and coupling conditions. 2-Methoxy-4-Nitrobenzoic Acid remains less prone to side reactions when preparing aryl amides or esters, compared to its methyl sibling. Looking at price, the methoxy derivative requires more steps and stricter control, so the extra cost brings extra performance in precision chemistry.

    Many off-the-shelf benzoic acids show batch color variations that impact yield and purity of follow-up reactions. During scale-up, we've seen that even small contamination or incorrect placement of substituents can put an entire synthesis sequence at risk. Working directly at the production level, we respect what a few well-tuned process tweaks offer in real output for the chemist in the downstream lab.

    Challenges and Real Solutions in Manufacturing

    Manufacturing 2-Methoxy-4-Nitrobenzoic Acid, especially at large scale, means more than mixing reagents or running columns. Raw material sourcing remains critical. Cheap, poorly processed anisole inputs sometimes carry metal ions or unsaturated tars that upset both the expected yield and the long-term stability of finished material. Our experience shows that pre-testing and rejecting lower-grade starting material, even at higher up-front cost, saves more expense and downtime in the long term.

    Product handling brings its own challenges. Like all nitrobenzoic acids, the compound’s fine powder can form static-charged dust when loaded into drums. We use local extraction and anti-static gear, refined after years of learning what really prevents trace cross-contamination across product lines. Process engineers on our team developed bulk-handling setups to prevent exposure and product losses. Users benefit from these small, accumulated tricks, seeing fewer unexplained particles or contaminants during their own re-crystallization steps.

    Quality Control: Hardened by Routine and Audits

    Quality control lives in everyday routines here, not in documents on a shelf. Operators pull reference samples from each reactor batch, testing by HPLC within hours. Melting point readings draw on years of comparative data, letting technicians catch shifts suggesting impurity or system drift. External agency audits frequently seek proof behind every certificate, so we keep a straight line of paper trails, real analytical runs, and daily calibration logs. When process changes improve recovery or cleanliness, the factory team logs these without shortcuts, so the record reflects the real process—not an idealized version.

    Environmental and Worker Safety: Foundations, Not Add-Ons

    Benzoic acid derivatives require careful handling at every step. We designed our ventilation and waste capture systems over several years, building in practical fixes that field engineers suggested. For years, we spent more on corrosion-resistant reactors and lined drains, based on direct experience with how nitroaromatic acids interact with mild steel and other basic building materials. On the safety side, all production workers wear upgraded PBM and use air-monitoring around drum-filling machines—we track actual exposure, not just theoretical numbers.

    Continuous Improvement: Feedback Loops that Matter

    Our approach grows from feedback loops that involve not just customers, but every technician who handles the product. The technical department runs retrospective analyses of product returns, botched batches, or unusual impurity patterns, then brings those findings back to the engineers and production staff. No improvement comes from isolated decisions; every tweak must prove itself both at the instrument bench and during final packing. This helps explain why repeat clients report fewer problems with our shipments, and third-party validation—while appreciated—often confirms what our own QC has documented already.

    Sustainability and Supply Stability Built Over Time

    We have faced raw material shortages, exporter restrictions, and logistics breakdowns. Instead of relying on single-source suppliers, our procurement office has built secondary and sometimes tertiary supply paths for all key inputs, from nitrobenzene precursors to acetic acid and solvents. In periods of instability, engineers adjust reactor schedules and tank cleaning cycles to match available stock, scaling up or down without sacrificing quality. This nimble production style—born from challenging times—keeps client projects on track even when market availability wobbles.

    Recycling and waste minimization matter at scale. We designed run-off treatment and solvent recovery systems after close analysis of waste streams. Used solvents see in-house regeneration when purity suffices for non-critical wash steps; only fully spent streams exit as treated waste. Product yields rise and disposal costs fall—a benefit all parties recognize.

    Practical Insights from the Factory: Case Study Snapshots

    One pharmaceutical partner flagged a run of impurities they thought came from our product. Their QA supplied trace-level LCMS data. We dug into six months’ reactor campaign logs, lined up melting point data, reviewed every batch sample, and found a correlation: a temporary supplier had shipped reagent with a slightly altered grade. Our senior chemist flagged a faint but persistent solubility difference in small-batch trials. Fixing the input, the issue dropped below detection limits, and six months’ orders stayed on track—with real-world numbers backing up each shipment.

    A dye-maker’s R&D department once phoned in: their new blue pigment wouldn’t crystallize unless our acid met a sub-1.0% chloride test. Many plants ignore minor halide contamination, but in synthesis for some azo dyes, chloride can block or slow key coupling steps. We traced the problem to a salt cross-contamination during bagging. The factory team switched to a new rinsing protocol after trials, and the result meant easier pigment purification not only for them, but for a number of other long-time clients.

    Looking Forward: Meeting Changing Needs

    Chemical manufacturing does not stop at delivering the “same old product.” New applications—advanced polymers, specialty coatings, agrochemical R&D—push us to improve and adapt processes for 2-Methoxy-4-Nitrobenzoic Acid. As regulations on nitroaromatic compounds change, equipment upgrades and waste stream tracking stay at the foreground of our plans. Our expansion team works with on-site and off-site technical collaborators to keep batch consistency as labs scale from kilos to multi-ton projects.

    We continue to fund process development—updating spectrometric analysis, automated feeding, and on-line purity checks. Plant chemists and operators swap technical notes with pilot customers, helping fine-tune usage protocols, helping build new knowledge for every user down the value chain.

    Choosing the Manufacturer’s Perspective

    Clients often ask what sets a real manufacturer apart from a trader or a third-party warehouse. The answer comes down to lived experience: we face every raw material hiccup, every batch quirk, and every opportunity for improvement. The product’s story is written by the operators, engineers, and analysts who sweat the details—each shipment, each audit, each question about performance in actual use. Down at the factory level, “specifications” become problem-solving challenges and new process standards, turning each order of 2-Methoxy-4-Nitrobenzoic Acid into a story that ties together reliability and hard-won expertise.

    Commitment to Informed Partnerships

    We believe advanced chemistry depends on trust: not just trust in the purity or on-time delivery of a single order, but belief in a shared commitment to progress and problem-solving. Whether your application is routine or a new exploration, every drum, every sample, every technical report you get from our plant traces back to the people, controls, and culture that built the compound. Our insight, built day by day, brings not just a product, but a partnership you can depend on across many projects to come.