Anhui Liwei Chemical Co., Limited
Products

2-Bromo-4-Nitrophenol


    • Product Name 2-Bromo-4-Nitrophenol
    • Alias 2-Bromo-4-hydroxy-1-nitrobenzene
    • Einecs 221-736-7
    • 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

    324644

    Product Name 2-Bromo-4-Nitrophenol
    Chemical Formula C6H4BrNO3
    Molecular Weight 218.01 g/mol
    Cas Number 2855-03-4
    Appearance Yellow to orange crystalline powder
    Melting Point 149-153°C
    Solubility Slightly soluble in water; soluble in organic solvents such as ethanol or acetone
    Density 1.89 g/cm³ (approximate)
    Purity Typically ≥98%
    Storage Conditions Store in a cool, dry place, protected from light
    Smiles C1=CC(=C(C=C1O)Br)[N+](=O)[O-]
    Inchi InChI=1S/C6H4BrNO3/c7-5-3-4(8(10)11)1-2-6(5)9/h1-3,9H

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

    Packing & Storage
    Packing The 2-Bromo-4-Nitrophenol is packaged in a 25g amber glass bottle, labeled with chemical name, purity, and safety information.
    Shipping 2-Bromo-4-Nitrophenol is shipped in tightly sealed containers to prevent leakage and contamination. It is classified as a hazardous material and must be packaged according to relevant safety regulations, protecting it from light and moisture. Appropriate labeling and documentation are required for safe domestic and international transport, in compliance with chemical shipping standards.
    Storage 2-Bromo-4-nitrophenol should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from incompatible substances such as strong oxidizing agents and bases. Protect from light, heat, and moisture. Ensure the storage area is clearly labeled and equipped with appropriate spill containment measures and safety equipment. Store at room temperature and avoid sources of ignition.
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    Tel: +8615380400285

    Email: sales2@liwei-chem.com

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    Certification & Compliance
    More Introduction

    2-Bromo-4-Nitrophenol: A Closer Look from the Manufacturer’s Bench

    Understanding 2-Bromo-4-Nitrophenol in Practical Terms

    In the daily routine of our production lines, 2-Bromo-4-Nitrophenol stands out as a compound that draws attention for its reliability and versatility. Work on this material reveals a unique balance — its molecular structure, with the bromine atom at the second position and the nitro group at the fourth on the phenol ring, offers properties not easily found in its isomers or similar compounds. Over years in the lab and plant settings, we have seen requests for this product grow, particularly among customers developing specialty intermediates, pharmaceuticals, and functional materials.

    When examining 2-Bromo-4-Nitrophenol by its appearance and behavior during synthesis, its yellow crystalline form is easily recognized. The chemical formula C6H4BrNO3 becomes more than a line in a datasheet once you have observed how consistently it crystallizes from properly controlled reactions. Quality on our production floor is best measured by purity — checked batch after batch, relying on both HPLC and NMR analysis — maintaining standards with a typical assay exceeding 98%.

    The Manufacturing Process: What Sets Our Product Apart

    Consistency in outcome does not come from wishful thinking; it stems from experience. Our synthesis builds on controlled nitration and bromination of phenolic precursors, avoiding overreaction that can lead to unwanted byproducts. We optimize stoichiometry to lower residues and tweak temperature gradients for better selectivity. Skilled operators monitor every step, recognizing the visual and olfactory cues that signal a successful reaction. This hands-on expertise means we do not just rely on automation; human judgment plays a central role in minimizing impurities, ensuring every drum meets the mark for color, melting point, and content.

    Simple as that sounds, each modification in process parameters finds its answer in years of accumulated data. If you have ever worked in a synthesis plant, you know no two batches ever turn out exactly the same without firm control and rigorous follow-up testing. Slight changes in raw material quality, ambient humidity, and reaction vessel scaling can introduce variables. This is why we tie performance of each lot of 2-Bromo-4-Nitrophenol to real-life feedback — how it dissolves in customer solvents, how it reacts downstream in their applications, and even how it packs and ships under changing climate conditions.

    Usage: Where Knowledge Meets Application

    Experience with this product stretches across several sectors. Pharmaceutically, 2-Bromo-4-Nitrophenol sees its primary use as an intermediate, especially during the synthesis of compounds where selectivity and high substitution accuracy matter. Because of the electron-withdrawing nitro and bromine groups, it serves as a versatile reactive partner. Many customers rely on its clean halogenation to set the stage for carbon–carbon or carbon–heteroatom substitutions, such as Suzuki and Buchwald couplings.

    Some research settings favor it for exploring bioactive scaffolds, recognizing that the presence of both nitro and bromine groups opens routes to further derivatization. The same properties that make it valuable in pharmaceuticals also suit certain agrochemical syntheses, where precision and reactivity with other building blocks can keep production costs in check.

    From an operational perspective, no two applications draw from exactly the same list of requirements. Some teams need strict control over trace metallics, fearing their downstream catalysts might deactivate, while others focus more on particle size for blending or dissolution rates. Here, open communication between our plant and chemists downstream makes a difference — it helps in anticipating and preempting issues before they lead to time loss or product failure.

    Comparing 2-Bromo-4-Nitrophenol with Related Compounds

    Many reach out looking to understand whether 2-Bromo-4-Nitrophenol should take precedent over similar compounds like 4-Bromo-2-Nitrophenol, 2-Bromo-5-Nitrophenol, or even mono-nitro or mono-bromo phenols. The answer seldom comes in black and white and often rests on a nuanced understanding of electronic effects, steric hindrance, and downstream transformation goals.

    In our day-to-day, we notice researchers sometimes start with 2-nitrophenol or 4-nitrophenol, but once their process demands greater selectivity or stronger directing effects for substitution reactions, the di-substituted variant with bromine and nitro at specific positions emerges as the favored choice. Positional isomerization influences both reactivity and product isolation after further elaboration. In many cases, 2-Bromo-4-Nitrophenol minimizes byproduct formation due to less reactive ortho and para sites, leading to cost reductions in purification and waste handling.

    Compared to just the nitro-phenols, adding a bromine creates a better leaving group or offers a functional handle for subsequent cross-couplings. This property matters for anyone designing complex molecules by modular chemistry. Conversely, switching nitro to the ortho position (as in 2-Bromo-2-Nitrophenol) can introduce steric hindrance, complicating certain key transformations, often making 2-Bromo-4-Nitrophenol a more attractive option for those aiming for efficient yields.

    Quality Matters: Our Approach to Specification and Assurance

    From the inside of our laboratory to the automated lines, product quality reflects lived experience. Rigorous inspection is not just a matter of ticking boxes; it supports our reputation and keeps production hiccups out of our customers’ workflow. We focus our specifications on what really matters in practical use: melting point consistency, purity above 98%, minimal residual solvents, and trace impurity profiling.

    Melting point, usually landed in the range of 120–124°C, is not simply a check for identification but an indirect indicator of process control. Lower readings sometimes hint at contamination or incomplete drying. Our regular audit of drying protocols and purity checks across the supply chain helps maintain this parameter. HPLC purity often sits near or above 99%, and we regularly arbitrate results with independent labs, not just in-house documentation.

    Beyond that, we keep a detailed impurity map, built from years of scaling up batches. For researchers designing sensitive syntheses downstream, our profile means fewer unknowns; you spend less time trouble-shooting and more time on actual results. Consistent sizing ensures that powders disperse or dissolve as expected, rather than cause bottlenecks in mixing or filtration.

    Packaging and Handling Practices Learned from Real Situations

    Every kilogram bagged reflects choices made through trial and error. Early packaging experiments taught us that moisture uptake, even in supposedly low-humidity warehouses, can trigger caking or subtle color shifts. That issue led to our switch to double-layer polyethylene liners inside sturdy fiber drums, tested over months instead of weeks. For exports, secondary containment prevents cross-contamination, especially under unpredictable transit conditions.

    Safe handling calls for respect and preparation. Operators wear dedicated personal protective equipment and follow protocols covering dust suppression and spill control. We provide up-to-date shipment documentation focusing on the real risks posed by the combination of nitro and bromine functionalities, such as suitable compatibility lists and storage stacking advice for warehouses. These recommendations trail back to learnings from shipping mishaps, near-misses, and evaluations of returned goods from customers with real-world storage constraints.

    Environmental and Regulatory Considerations from the Manufacturer’s Viewpoint

    On the ground, environmental responsibility means keeping air, water, and soil in view during every step. Our emissions from nitration and bromination are controlled using tailored scrubber systems; vent treatments get monitored and re-checked with updated standards in mind. Wastewater undergoes careful neutralization and chemical breakdown before external discharge. We spend time tracking these outputs because we face direct scrutiny from auditors and neighbors alike.

    Regulation shapes our approach to documentation and traceability. While 2-Bromo-4-Nitrophenol itself does not classify as an extremely hazardous substance, raw materials and downstream preparations often do. This reality influences our batch recording, shipping labels, and recordkeeping. Regular training updates make our teams proactive, not reactive, to evolving guidelines, whether they refer to REACH, TSCA, or local environmental health codes.

    Sustainability comes up more frequently during order discussions, especially with multinational clients looking to lower their total environmental footprint. Our growing investment in process optimization aims to cut waste and energy consumption, without trading off the performance attributes valued by our customers.

    Why Expertise Trumps Mere Availability

    As demand for custom syntheses and high-precision building blocks grows, success boils down to factory know-how. In the world of 2-Bromo-4-Nitrophenol, subtle differences in lot performance can make or break an entire downstream process. Facility operators who have run dozens of batches develop a sixth sense for tweaks that improve yields or stave off unexpected coloration that upsets end uses. Sharing knowledge transparently — from reaction conditions to packaging lessons learned — gives an edge that generic listings or intermediaries cannot deliver.

    Issues sometimes land on our desks that trace back to subtle points: slight pH drifts in customer solutions, delayed crystallization, or strange degradation under heat. Working directly with bench chemists and plant engineers helps solve these problems faster. We keep open communication lines — swapping real-use observations, not generic advice — so that our clients do not lose cycles to troubleshooting what could have been flagged in advance.

    Anticipating Tomorrow’s Challenges

    Market expectations shift rapidly. Customers look for greener processes, tighter specifications, and a transparent supply chain. Experience tells us not to treat these trends as obstacles, but as opportunities to push process improvements further. Our team spends extended hours brainstorming solvent switches, alternative oxidants, or ways to recover and reuse reagents. These ideas sometimes start as small-scale pilots and grow into full plant modifications that improve resource efficiency and lower environmental impact.

    Feedback loops help us find out whether new practices in drying, purification, and handling truly deliver better material to our clients’ doors. Analytical chemists in our staff monitor batch-by-batch data, ready to recognize outliers or gradual trends that might hint at raw material drift or equipment wear. Our success does not rest on a snapshot, but rather on this continuous flow of adjustment and verification.

    Collaboration: The Path to Real Innovation

    More than a few major process improvements stemmed from close work with end-users. One multinational partner needed ultra-low metal content for a sensitive pharmaceutical route. After months of joint testing and changes in reactor lining and raw material checking, both teams dialed in a solution that passed validation and scaled up seamlessly. These efforts do not show up in glossy brochures, but they shape the reliability and suitability of every shipment we send.

    Our door stands open to requests that fall outside the usual product brief. Special lots, tailored drying conditions, or new purity standards all get a thorough hearing. Working together in this way, manufacturers and customers both lower risk and open new technical pathways. The real difference for researchers and process developers comes from a supply partner ready to solve problems, not just ship boxes.

    A Day in the Life: How 2-Bromo-4-Nitrophenol Is Made and Delivered

    A typical production run begins with planning based on customer forecast and current stock. Operators check raw phenolic inputs and reagents using wet chemistry tests and instrumental analysis, then calibrate equipment for the day’s conditions. Stirred reactors run the transformation, while operators keep real-time logs of temperature, color change, and reaction rate. As the product forms, samples get pulled for melting point and HPLC checks.

    Finished crystals flow to filtration, washing, and controlled drying. Each step factors in weather, recent maintenance, and any customer-specific requirements. Synthetic chemists and quality analysts work side by side — reviewing analytical data, cross-checking impurity markers, and providing go/no-go calls on moving to packaging.

    Logistics teams handle the final steps. Every outbound drum gets weighed, labeled, and queued for transport. Export shipments go through extra verification on packing integrity and paperwork, especially for routes passing through hot, humid ports or regions with stricter chemical import controls. This daily rhythm keeps disruptions low and real-world delivery times in line with contract promises.

    Looking Back and Ahead: The Manufacturer’s Perspective

    Years of manufacturing 2-Bromo-4-Nitrophenol impart lessons no document list can substitute. Operators recall past missteps with moisture ingress or scaling up too quickly. Managers tweak production forecasts after tracking shifts in feedstock prices and regulations. Technical staff sharpen their attention to new discovery trends, knowing that today’s specialty intermediate may turn mainstream tomorrow.

    By forging deep working relationships with technologists and end-users, every experience—good and bad—finds its way back into the next batch or business decision. Our goal is always to deliver material that not only meets specifications on paper but actually delivers results in the flask, reactor, or production vessel. That continual improvement mindset sets the bar higher, letting 2-Bromo-4-Nitrophenol continue to serve as a foundation for both current and next-generation formulations.

    In practice, the value of any specialty chemical depends less on flashy claims and more on the steadiness, expertise, and focus that come only from making it day after day, year after year. Our work with 2-Bromo-4-Nitrophenol reflects that ethos, bringing together hands-on experience, careful attention to changing industry needs, and a commitment to safe, effective, and sustainable delivery.