Anhui Liwei Chemical Co., Limited
Products

4-Amino-2-Nitrophenolate


    • Product Name 4-Amino-2-Nitrophenolate
    • Alias 4-Amino-2-nitrophenol
    • Einecs 244-223-9
    • Mininmum Order 1 g
    • Factory Site Lingwu, Yinchuan, Ningxia, China
    • Price Inquiry sales2@liwei-chem.com
    • Manufacturer Anhui Liwei Chemical Co., Limited
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    473987

    Iupac Name 4-amino-2-nitrophenolate
    Molecular Formula C6H5N2O3
    Molecular Weight 153.11 g/mol
    Appearance Yellow to orange solid
    Solubility In Water Soluble
    Pka Approximately 6.5 (phenolic group)
    Major Functional Groups Amino, Nitro, Phenolate
    Synonyms 4-Amino-2-nitrophenol, p-Amino-o-nitrophenol (phenolate form)

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

    Packing & Storage
    Packing The 4-Amino-2-Nitrophenolate is packaged in a 25g amber glass bottle, sealed with a secure screw cap for safe storage.
    Shipping 4-Amino-2-nitrophenolate should be shipped in a secure, airtight container, properly labeled according to hazardous material regulations. It must be protected from heat, moisture, and direct sunlight. Transportation should comply with applicable chemical safety standards, ensuring safe handling. Consult the SDS for classification, recommended storage conditions, and emergency procedures during shipment.
    Storage 4-Amino-2-Nitrophenolate should be stored in a tightly sealed container, protected from light, moisture, and incompatible substances such as strong acids and oxidizing agents. Store at room temperature in a cool, dry, and well-ventilated area. Ensure containers are clearly labeled and access is restricted to trained personnel. Follow all relevant chemical safety guidelines and local regulations.
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    For samples, pricing, or more information, please call us at +8615380400285 or mail to sales2@liwei-chem.com.

    We will respond to you as soon as possible.

    Tel: +8615380400285

    Email: sales2@liwei-chem.com

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    Certification & Compliance
    More Introduction

    4-Amino-2-Nitrophenolate: A Closer Look from the Manufacturing Floor

    What Drives Development in Our Labs

    Every batch we produce of 4-Amino-2-Nitrophenolate comes from honest lab work by chemists who have spent years sharpening their skills. We see trends shift in synthesis, demands from formulators change, and each adaptation we make leaves a mark on how this product performs in the real world. Delivering this compound consistently takes more than a focus on output figures—it means understanding both the molecule’s quirks and the practical struggles faced in downstream applications. From our experience, cost and purity are always priorities, but long-term relationships in the supply chain rest on something deeper: reliability and transparency about the product’s capabilities and limits.

    Understanding Our Product’s Profile

    We manufacture 4-Amino-2-Nitrophenolate to support researchers and industrial teams developing dyes, pharmaceuticals, analytical reagents, and polymer intermediates. This substance distinguishes itself with its unmistakable yellow to reddish-orange color, resulting from its unique structure—a balance of electron-withdrawing and electron-donating groups. In our view, a product’s real value starts at the micro-scale. We measure composition using verified HPLC and NMR methods, and impurities face double checks at every load-out. A typical lot stays within a purity range above 98%, as demonstrated in regular third-party audits and internal cross-checks. The crystalline form, stable under standard storage, allows fast dissolution into aqueous and polar organic solutions.

    Molecular Characteristics Tied to Everyday Results

    Experience on the plant floor has taught us that subtle shifts in processing parameters produce big differences in the optical and reactivity profiles of 4-Amino-2-Nitrophenolate. The nitro and amino groups both influence how the compound participates in further reactions, such as azo coupling or electrophilic substitution. Solubility matters not just for QA reports—it fundamentally affects how a dye formulates or how a reagent behaves during assay development. End users see the distinction between sluggish material and a batch that integrates quickly into their process. Our attention to washing, drying, and particle sizing keeps lot-to-lot variation minimal and helps customers hit technical targets without time lost on troubleshooting.

    Applications that Keep Expanding

    Researchers in organic synthesis come back to 4-Amino-2-Nitrophenolate for its strong nucleophilicity at the para-amino position and its reliable behavior in nucleophilic aromatic substitution. These traits have kept it relevant, even as industry requirements evolve. Analysts use its well-defined absorbance in the visible spectrum in colorimetric tests. We speak with laboratories leveraging the compound for new sensor prototypes, diagnostic precursors, and advanced polymer designs seeking specific electronic effects. Pharmaceutical projects sometimes look for new scaffolds, and derivatives of our product appear in pipelines ranging from antimicrobial candidates to enzyme inhibitors. Our technical support team follows these developments closely, and feedback from these communities cycles into our next production reviews.

    Production Integrity: Why Consistency Beats Hype

    Too often, marketing materials overlook the hassle a single off-spec shipment can cause. Our process doesn’t chase grand claims or buzz phrases. We use exacting crystallization protocols and maintain precise temperature control to avoid over-oxidation or side-product inclusion. Staff know the materials they’re handling and spot warning signs early. Scale-up for larger customers means each kilo, right to the last gram, comes from reactors and filtration set-ups designed for robust isolation rather than volume alone. This approach keeps visual appearance, reactivity, and solubility within known ranges and prevents costly surprises downstream.

    Specification Details Brought Forward by Manufacturing Know-How

    We measure purity off the final dried product by HPLC, monitoring both major and trace-level impurities that can impact sensitive synthesis or analytical applications. Moisture content, checked by Karl Fischer titration, stays below 0.3%. Ash content runs well below common impurity thresholds. We keep close tabs on the color index, as even minor shifts signal process drift or filtration variation. Storage protocols keep batches dry, shielded from light and heat to maintain stability for extended supply timelines.

    Comparisons with Analogous Compounds

    From a chemist’s bench, small structural differences matter. Compared with common isomers and other nitroaniline derivatives, 4-Amino-2-Nitrophenolate stands out due to its resonance stabilization. This leads to stronger photophysical properties and greater predictability in dye synthesis. In many dye and pigment reactions, isomeric side products can throw off purity or color stability. The position of the nitro group not only tunes the absorbance peak but changes the way downstream functional groups can be introduced. Technicians tell us that substitution on the 2-position lends distinct electronic effects, providing the backbone for several classes of colorants and sensor compounds not accessible using more typical 4-nitroaniline analogues.

    Tackling Issues in Scaling Up Without Sacrificing Quality

    Experience in the plant proves scalability brings surprises. Reactors at larger capacity require careful agitation to keep temperatures uniform and avoid local excesses that drive side reactions. A pilot batch may look perfect on a chromatogram, but the leap to bigger vessels sometimes introduces yield drops or trace impurities that require post-purification. We've solved these with investments in in-process NMR, real-time temperature tracking, and more rigorous endpoint testing. Delivering at scale without slipping in quality is not marketing bluster, but a daily reality. Our professional growth, and that of our products, came from tackling these pain points—sometimes painfully—over years of production.

    End-User Experience Shared from the Production Floor

    Feedback cycles matter. Universities and industrial labs regularly report back on performance in their syntheses, reflecting not just on basic purity but also on how fast the material dissolves, its behavior during catalytic steps, or its stability over time. One batch that holds up for months, even in less-than-ideal storage, wins trust faster than any certificate. Our tech support staff—a group comprised of former plant chemists, not just paper-pushers—keep this dialogue alive. They help troubleshoot missteps, identify potential cross-reactivity, and adjust recommendations based on hands-on knowledge. As manufacturers, we see where theory actually bends, and share those observations up and down our supply chain.

    Downstream Impacts and Real-World Cost Management

    The real cost of 4-Amino-2-Nitrophenolate for a customer does not end at the invoice price. Hidden costs crop up from inconsistent batches, unexpected insolubles, or contamination that halts a process downstream. We run extended stability tests and offer feedback directly to process engineers about transit and storage conditions because we’ve learned—sometimes painfully—how a small compromise in packaging or transport ruins entire lots. Our familiarity with customs clearances and global logistics became integral to ensuring users in pharmaceutical or materials science fields receive compound that does its job, every time.

    Product Differentiation Backed by Evidence

    Unlike more generic compounds in the same family, our 4-Amino-2-Nitrophenolate stands apart thanks to careful batch documentation, traceability, and actual feedback from frequent users—reflected in return business rates and technical follow-up. We have logged stability times ranging from 18 to 24 months under standard storage, based on samples from our actual production lots, not just literature values. Lot histories reveal a trend of minimal batch-to-batch deviation in solubility, which users have confirmed by reporting fewer reoptimization cycles in both dye blending and reagent formulation.

    Environmental and Safety Considerations from a Producer’s Perspective

    Legitimate concerns about handling aromatic nitro compounds deserve open scrutiny. In production, we enforce strict air handling and effluent controls: real pH monitoring and carbon scrubbing as baseline, not as afterthoughts. Plant personnel undergo regular training to minimize exposure risk, and we publish up-to-date safety guidance for customers—not stock MSDS shortcuts, but tailored bulletins rooted in observed use patterns. Waste minimization and responsible raw material sourcing remain points of ongoing research for us, not box-ticking exercises, as regulatory pressure and societal expectations both keep rising.

    Continuous Improvement: Listening, Learning, and Applying Lessons

    Direct and frequent conversations with end users encourage improvements every production cycle. A research institute might uncover a subtle sensitivity to heavy metals, prompting us to overhaul our water purification. An industrial dye house spots a minor change in hue between batches; after in-depth root-cause tracking, we rework our recrystallization method to fix it. These changes never come from top-down mandates, but from a hands-on culture that knows product refinement wins loyalty and keeps us ahead of growing specifications and compliance regimes.

    Bridging Research and Manufacturing: Real-Life Collaboration

    Close collaboration with partner labs leads to new insights—what starts as an R&D tweak at small scale sometimes grows into industry-standard practice. That's how, a few years back, a minor change in reaction workup—suggested by a university chemist—cut our solvent usage by a third without losing yield. We update such process improvements directly into production and document each step, closing the loop from end user to plant. This kind of responsiveness only happens between manufacturers and their clients, not in arm's-length distribution channels.

    Meeting Regulatory Demands and Customer Expectations

    Agencies continually revise legal limits and purity standards for functional groups present in colorants and fine chemicals. Production logs include test records mapped to these external criteria, and every lot comes with documentation of compliance or notification of variation well in advance. This transparency means customers can use our material in regulated workstreams—whether in preclinical research or ingredient compounding—without chasing paperwork after the fact. Conversations with auditors and compliance officers bring fresh requirements, which we add to our next round of in-plant checks.

    Developing Solutions for Downstream Challenges

    Long shelf life only matters if the compound stays stable under storage conditions found in actual facilities. After learning of failures in humid climates, we upgraded our desiccant inclusion inside product drums and started using secondary liners that block out both moisture and light. For customers seeking smaller lot sizes to avoid waste, we established a line for precision filling into low-volume containers using closed-loop, tamper-evident packaging, based on direct process feedback. Each tweak in shipment or storage doesn’t solve all global logistics issues, but these pragmatic changes directly address problems real customers faced.

    Staying Responsive in a Changing Market

    Raw material cost swings, global trade flux, and the pace of innovation force constant adaptation. Rather than focus only on control points, our staff keep eyes on industry news, attend technical conferences, and review emerging research using our materials. This gives us advance warning for shifts in application demand and enables us to refine synthetic batches ahead of curveballs. Partnerships with logistics teams and customs specialists make sure urgent shipments move to where they're needed, avoiding the headaches caused by delay or administrative surprises.

    Delivering Knowledge with Every Kilo

    Supply means more than a reliable shipment. We include application notes, technical references, and troubleshooting tips learned from the field, not lifted from generic resources. Our communications highlight root causes behind challenges—say, the occasional incompatibility in certain solvent systems or overlooked storage quirks. This knowledge might spare a process development team weeks of recalibration or protect a research group from an expensive false lead.

    Anticipating Where Science Will Take 4-Amino-2-Nitrophenolate Next

    Innovation rarely moves in straight lines. We’re seeing more groups using our compound in photochemical research, advanced coatings, and diagnostics built around electronic signal changes inherent to its nitro and amino group balance. As interest grows in sustainable material design, we’re collaborating on greener synthesis options that minimize waste and open the door to bio-based inputs. These efforts take time, investment, and many lessons learned, but the reward comes from seeing our material enable the next wave of scientific discovery.

    Why Trusted Manufacturing Matters Now More than Ever

    Our experience has shown that product trust wins more business than any sales pitch. End users want a partner who stands by the science and understands the applications from synthesis through end use. They need honest answers about a lot’s suitability for new R&D work, how to troubleshoot a troublesome reaction, or what to expect from storage in variable climates. We keep lines open so that every order comes with real support grounded in our own operational reality. This builds the kind of working relationship that lasts well beyond one shipment or project cycle.

    The Outlook for Growth and Next Steps for Our Team

    The story of 4-Amino-2-Nitrophenolate continues to unfold as new applications push the envelope. We recognize that the journey calls for both a foundation of hard science and an active two-way conversation between manufacturing and research teams. The challenges ahead will reshape expectations for both quality and sustainability, and we enter that future with processes, data, and relationships built over years of careful work—it’s what keeps us learning, improving, and serving the next generation of scientists and innovators.