Products

1-Bromo-2,4-Dinitrobenzene

    • Product Name: 1-Bromo-2,4-Dinitrobenzene
    • Alias: DNFB
    • Einecs: 207-521-8
    • Mininmum Order: 1 g
    • Factroy Site: Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry: admin@ascent-chem.com
    • Manufacturer: Ascent Petrochem Holdings Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    322302

    Cas Number 585-71-7
    Molecular Formula C6H3BrN2O4
    Molar Mass 247.00 g/mol
    Appearance Yellow crystalline powder
    Melting Point 83-85 °C
    Boiling Point 344.4 °C at 760 mmHg
    Density 1.93 g/cm³
    Solubility In Water Slightly soluble
    Flash Point 162.2 °C
    Refractive Index 1.672

    As an accredited 1-Bromo-2,4-Dinitrobenzene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Brown glass bottle containing 25 grams, sealed with a red cap, labeled with hazard warnings and chemical details in bold lettering.
    Shipping 1-Bromo-2,4-Dinitrobenzene is shipped as a hazardous chemical, typically in sealed containers designed to prevent leaks and contamination. Transport follows regulations for toxic and environmentally hazardous substances, including appropriate labeling, documentation, and handling precautions. Protective measures are taken to avoid exposure, and shipping must comply with relevant international and local safety standards.
    Storage **1-Bromo-2,4-dinitrobenzene** should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from heat, sunlight, and incompatible substances like strong reducing agents or bases. Use secondary containment to prevent spills. Proper labeling and segregation from food and oxidizable materials are important. Follow all relevant chemical hygiene and safety guidelines during storage.
    Application of 1-Bromo-2,4-Dinitrobenzene

    Applications of 1-Bromo-2,4-Dinitrobenzene in Industrial Manufacturing

    As a dedicated manufacturer of 1-Bromo-2,4-Dinitrobenzene, we have documented its adoption by select advanced manufacturing sectors where its reactive aromatic structure enables complex syntheses under strict performance and quality requirements. Below we detail established process integration scenarios with application-specific compliance, formulation ratio guidelines, production flow, and the precise categories of resultant end products.

    1. Pharmaceutical Intermediate Synthesis

    Leading pharmaceutical companies require highly specific nitroaromatic intermediates for the stepwise construction of active pharmaceutical ingredients. 1-Bromo-2,4-Dinitrobenzene serves a distinctive role in nucleophilic aromatic substitution and amination reactions during the assembly of key molecular scaffolds used for anti-microbial and anti-tumor APIs. The presence of bromo and nitro substituents allows for precise regioselective transformations, with usage rates determined by stoichiometric ratios and yield optimization protocols. Strict adherence to global medicinal chemistry manufacturing standards governs every batch, with thorough documentation required throughout multi-step synthesis.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients
    • EU GMP Annex 1 and 21 CFR Part 210/211
    • Relevant local pharmacopoeial monographs, e.g., USP, EP
    • ISO 9001:2015 for quality management in chemical synthesis

    Typical usage ratio

    • 0.2–0.5 molar equivalents relative to coupling partner; ratio may be increased for higher conversion in amination or reduction steps

    Downstream process integration

    • Introduced during controlled aromatic nucleophilic substitution or reduction stages (batch or continuous flow)
    • Pre-purified by solid–liquid extraction and monitored by in-process HPLC/GC
    • Reacts at pharma-grade reactors (glass-lined or stainless steel), then intermediates isolated via crystallization

    Final product types

    • Specialty intermediates for beta-lactam antibiotics
    • Pyridine-based anti-cancer agent building blocks
    • Precursors for anti-microbial and anti-inflammatory APIs
    • Custom contract-manufactured fine chemical entities

    2. Dyes and Pigments Manufacturing

    Within the specialty dyes industry, producers select this material for its role as a diazo component and reactive coupling base during the development of high-performance azo and nitro dyes. Its incorporation into the chromophore backbone confers enhanced colorfastness, thermal resistance, and affinity for synthetic and natural fiber substrates. Plants employ tightly controlled formulation protocols, conforming to textile and pigment safety standards for both worker safety and environmental discharge controls during synthesis and finishing operations.

    Industry compliance standards

    • REACH Regulation (EC) No 1907/2006 for chemical management
    • OEKO-TEX® Standard 100 if textile dye application
    • ISO 9001:2015 and ISO 14001:2015 for environmental management
    • ZDHC Manufacturing Restricted Substances List v3.1

    Typical usage ratio

    • 3–8% by weight in the final dye formulation, adjusted based on targeted shade and reactivity with coupling agents

    Downstream process integration

    • Charged to diazotization reactors as a core coupling base
    • Activated by alkali or amine-based agents in aqueous suspension
    • Colorant formed is isolated by filtration and subjected to further purification and spray drying

    Final product types

    • Reactive and acid dyes for synthetic fibers
    • Nitro-azo pigment dispersions
    • High-fastness printing inks
    • Color concentrates for plastics compounding

    3. Agrochemical Intermediate Production

    Producers of advanced crop protection agents and fine-tuned herbicides employ this compound as a halonitrobenzene starting point for aromatic substitution and cyclization reactions. Its electrophilic nature supports the construction of selective functional groups designed for targeted application and rapid degradation in modern agricultural formulations. Usage rates undergo strict review as part of toxicological risk assessments and regulatory filings for new active ingredient registrations globally. Processing lines maintain stringent in-process control to mitigate impurity carryover into finished goods.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • Regulation (EC) No 1107/2009 (EU pesticide approval framework)
    • EPA 40 CFR Part 158 (US Pesticide Registration Data Requirements)
    • ISO 9001 certified production; traceability documentation

    Typical usage ratio

    • As a primary intermediate, 0.15–0.4 molar equivalents relative to cyclization agent; varies per synthesis route and regulatory residue limits

    Downstream process integration

    • Fed to aromatic substitution or reduction reactors at early synthetic stage
    • Monitored via real-time UV/Vis spectrometry to ensure complete conversion
    • By-products removed by liquid-liquid extraction or distillation before further transformation

    Final product types

    • Precursor molecules for selective herbicides
    • Building blocks for fungicidal and insecticidal agents
    • Seed coating chemicals
    • Active ingredient intermediates for generic agrochemicals

    4. Polymer Crosslinking and Functional Additives

    Chemical and materials engineering firms integrate this nitroaromatic as a highly reactive crosslinker and functionality-modifying agent in advanced polymer resins and engineering plastics. Its electron-withdrawing groups enable covalent grafting via nucleophilic aromatic substitution, creating polymer matrices with improved thermal stability and chemical resistance. Process lines configure dosing protocols around resin type and degree of desired crosslinking, and all finished resin compounds undergo strict QA to meet industrial composite standards for automotive, aerospace, and high-performance coatings applications.

    Industry compliance standards

    • ISO 9001:2015 for process quality control
    • ISO 14001:2015 for environmental management at large-scale polymer plants
    • RoHS Directive 2011/65/EU (for electronics-grade compounds)
    • ASTM D256 and D638 for polymer mechanical property testing

    Typical usage ratio

    • 0.5–2% by weight in functional resin matrices; precise loading dependent on molecular weight of base polymer and target crosslink density

    Downstream process integration

    • Added in molten resin blending reactors under inert atmosphere
    • Undergoes homogenous reaction with terminal amine or thiol groups during compounding
    • Polymer mass shaped via extrusion, pelletized, or injection molded

    Final product types

    • High-temperature engineering plastics
    • Chemically-resistant coatings for industrial equipment
    • Fiber-reinforced composite resins
    • Specialty thermoset materials

    5. Analytical Reagent Preparation

    Reagent manufacturers supply laboratories with analytical-grade preparations derived from this nitroaromatic compound for use in selective detection and quantification of thiols and amines in biochemical assays. Because its structure enables clear chromogenic or fluorogenic response upon reaction with nucleophilic biomolecules, test kit production lines impose rigorous control on impurity profiles, solvent residues, and particle size to ensure clear and reproducible results according to recognized laboratory diagnostic protocols.

    Industry compliance standards

    • ISO 17034:2016 for reference material producers
    • ISO/IEC 17025:2017 certification for analytical testing
    • Good Laboratory Practice (GLP) guidelines
    • Relevant regional health authority regulations for diagnostic reagents

    Typical usage ratio

    • Provided as 0.05–0.2% in dry reagent mixtures or in concentrated stock solutions; proportion varies based on assay sensitivity requirements

    Downstream process integration

    • Dispersed during formulation blending under nitrogen
    • Stabilized in inert carrier matrices for shelf-life extension
    • Packaged as ready-to-use solid or dissolved protocols for biosample analysis

    Final product types

    • Spectrophotometric test kits for protein and enzyme analysis
    • Chromogenic thiol detection reagent blends
    • Laboratory standards for quality control applications
    • Reference materials for proficiency testing programs

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    Certification & Compliance
    More Introduction

    Understanding 1-Bromo-2,4-Dinitrobenzene: Directly from the Manufacturer’s Perspective

    Introduction to 1-Bromo-2,4-Dinitrobenzene

    Working in chemical manufacturing for decades, you see a lot of substances come and go. Some prove themselves too costly, others too volatile, and a handful earn an enduring place in laboratories, factories, and quality control rooms. 1-Bromo-2,4-dinitrobenzene has been around for a long time, not simply because it fills a niche, but because it delivers on the performance that chemists, analysts, and developers demand. We don’t just ship barrels and bags — we craft each batch to meet strict standards. Here’s what sets this compound apart, straight from the floor where it’s produced.

    Molecular Profile and Specifications

    Looking at the technical side, 1-Bromo-2,4-dinitrobenzene (often called 2,4-Dinitro-1-bromobenzene) brings together a benzene ring substituted with a bromine at the first position and nitro groups at the second and fourth positions. We keep a close watch on the purity; most of our batches routinely reach upwards of 99%, supported by gas chromatography and titration confirmation. Its bright yellow crystalline appearance signals the correct structure to experienced eyes even before instrument analysis. Melting points typically clock in reliably around 174°C–176°C, and solubility checks consistently verify its fit for use in both organic syntheses and various specialty tests.

    You can’t underestimate the impact of small impurities in a compound like this. For many of our clients, including research chemists and quality control teams, a contaminant at even half a percent throws off whole projects. This product stands out because we have adopted strict filtration and drying steps, coupled with multi-stage recrystallization. Every year, technology improves and we update processes accordingly. Years ago, columns didn’t separate closely related nitro compounds well enough. Now, we run upgraded chromatographic separations alongside old-school crystallization. This combined attention ensures that customers receive a compound that works as expected—batch after batch, year after year.

    Why Producers Value It: Real-World Applications

    Not all chemicals that pass through our plant draw equal excitement from buyers or from the folks on the assembly line. 1-Bromo-2,4-dinitrobenzene often gets special attention due to its versatility as both a reagent and intermediate. Teams engaged in organic syntheses use it to develop more complex aromatic systems or to modify proteins and polymers. Its halogen group makes it a solid anchor for nucleophilic aromatic substitution reactions. For protein chemistry, it stands out during peptide mapping: it reacts specifically with free thiol groups, offering a clear visual and quantitative handle for cysteine content. Analytical chemists can spot the way its bright color signals complete reaction, saving both time and ambiguity.

    In some branches of academia, this compound shows up at the front end of a lot of instructional labs. When university instructors contact us, they usually want a guarantee that their students will see predictable, easily interpreted results. Any variability in composition—be it residual solvent or inconsistent melting range—ruins that certainty. Over the years, repeat orders for educational use have underscored the value of reliable manufacturing.

    If you’re working in the early stages of pharmaceutical synthesis, you start paying particular attention to how substituents affect reactivity and selectivity. Drawing on our bulk production experience, we’ve seen this compound figure into programs developing agrochemicals, pigments, and even specialty explosives. Each season brings new fine-tuning. When an R&D chemist writes in with a new method to attach something at the meta position, we can suggest adjusting particle size or solvent system based on real data from previous scale-ups.

    What Sets High-Grade Manufacturer Output Apart

    With the flood of chemical listings online, the temptation to treat all sources as interchangeable lurks around every corner. That doesn’t hold true in real practice. As one of the teams actively producing 1-Bromo-2,4-dinitrobenzene at scale, we’ve tracked market shifts and adjusted sourcing and equipment to address them. There’s a gulf between product arriving with crisp documentation and product that genuinely delivers on the bench or reactor.

    Quality in this compound comes down to three pillars: consistency, traceability, and transparency. We use validated starting materials; each lot starts with a standard, high-purity bromobenzene base and undergoes nitration under controlled temperatures. Incomplete nitration or secondary bromination can lead to byproducts—these are cleaned out using staged purification. Each barrel or drum leaves with a detailed batch certificate—no copy-paste, just data from actual analytical runs, cross-checked to internal controls. For clients who need extra reassurance, we provide additional spectroscopic or chromatographic validation.

    Comparing 1-Bromo-2,4-Dinitrobenzene to Other Halogenated Nitrophenyls

    Some might look at our catalog and wonder: why not just use 1-Chloro-2,4-dinitrobenzene or the dinitrofluorobenzene variant? The key differences come down to both reactivity and stability. The bromine at position 1 affects the rate of nucleophilic substitution in unique ways—less reactive than fluorine, but more manageable and often more selective than the chlorine analog. In the lab, this means reactions tend to go slower than with the fluorinated version, which can offer greater control and reduce side reactions. We’ve observed that the brominated compound generally gives cleaner results with thiol functional groups, which is why it’s preferred for certain protein work.

    Specifying which variant to use boils down to the project aim. Analytical work often picks the fluorinated version thanks to its heightened reactivity, especially when sensitivity trumps selectivity. Formulators and pharmaceutical chemists turn to our brominated product for a more measured substitution, especially when building larger, multi-functional molecules. In pigment or dye chemistry, subtle differences in shade or fastness can influence which compound ends up being favored.

    Production Challenges and Safety Steps

    Producing 1-Bromo-2,4-dinitrobenzene calls for experience, not just adherence to recipes. Nitration runs exothermic and can go sideways quickly if you don’t keep a close eye on temperatures, stirring, and dosing of acids. Early in my career, I watched a batch go off-temperature; we lost the lot, but more importantly, that incident spurred new oversight protocols. Production operators wear advanced PPE, and process controls handle every step from weighing to crystallization. We built in redundant temperature sensors and switched to jacketed glass-lined reactors to give more safety margin.

    Waste streams receive special treatment, too. Acidic wash water and unused nitrating agents head into neutralization tanks. Conscientious management keeps us on the good side of both safety regulators and our internal commitments to minimize environmental impact. Each year, we review incident records and incorporate improvements in solvent recycling or energy use. Feedback loops close the gap between plant operations and sustainability commitments.

    Daily Realities: From Inventory Control to Shipping

    Day-to-day operations with 1-Bromo-2,4-dinitrobenzene demand both vigilance and agility. Batches get reserved in FIFO order, and stockrooms restrict access, logging every transfer. Drum stencils match electronic records. Mistakes cost money, and worse, they damage trust with long-standing partners. Our shipping team doesn’t treat this like a regular commodity; each package gets sealed and cushioned to avoid breakage and labeled in line with local and international transport regulations. Alerts flag any irregularity in storage temperature or humidity, and shipping partners receive explicit instructions on how to handle the goods during transit.

    We don’t just ship locally but support Asian and European buyers. That expands the range of regulatory checks—every border and customs scenario throws up new paperwork demands, especially for regulated chemical classes. We coordinate with customs brokers to ensure all documentation passes muster, and products reach their destination without delays that could compromise sensitive research timelines or production cycles.

    Customer Feedback and Real-World Outcomes

    Our story with 1-Bromo-2,4-dinitrobenzene evolves continuously with input from users. Every year brings new approaches in reaction design, instrument calibration, and post-purchase support. One research group flagged a slight change in color—this prompted us to adjust our crystal washing protocol and deliver even tighter control over purity and particle size. In another case, a pharmaceutical partner sought a larger bulk lot with tighter moisture content controls; we re-tooled vacuum drying runs and built in gravimetric moisture checks.

    Mistakes and feedback become learning opportunities. I recall sending a shipment to a university lab where students reported unexpected melting range deviations. Turned out, the storage facility had not maintained the correct ambient humidity. We followed up with both the client and our logistics provider, reinforced our packaging, and added guidelines to all shipments targeting education customers. These stories drive our reputation more than any single specification sheet.

    Innovations in Purification and Analytical Methods

    Year by year, advancements in analytical tools filter down to the plant level. Decades ago, aromatic compounds felt like a black box—just melting point and basic IR. Our team now leverages HPLC and high-resolution MS to diagnose and fine-tune each lot. Sometimes a minor IR band shows up and leads to new process tweaks. We also maintain archival retention samples, especially for sensitive intermediates that might be implicated in downstream product claims. This commitment to continuous improvement often sets large-scale manufacturers apart from fragmented or low-volume producers.

    We regularly consult with academic labs running cutting-edge synthetic methods. Their feedback influences which analytical checks make it into the routine report. If a customer wants to see a specific NMR assignment or needs to confirm absence of trace solvents, our analysts build it into the batch workflow. That flexibility adds up across hundreds of kilograms shipped each year, and helps support disruptive research that changes what chemists think possible.

    Regulatory Compliance and Traceability

    Working in this industry, one never forgets the importance of rock-solid compliance. Each intermediate, especially one used in agrochemicals or early-stage pharma, comes under scrutiny for trace contamination or off-spec batches. Our team keeps records stretching back years, each batch logged with raw material info, operator signature, and in-line QC steps. Auditors have walked through our plant corridors, and we’ve invited third-party inspectors to verify everything from labeling to documentation practices.

    We keep up with revisions in international transport codes, labeling requirements, and handling best practices. Shipping into the EU or North America requires compliance with REACH or TSCA, and our compliance staff invest time in periodic refresher training and document updates. Transparency builds confidence; we let our documentation do the talking and welcome questions from procurement and technical teams on the buyer’s side.

    Environmental Responsibility in Large-Scale Manufacturing

    Too often, people assume that industrial-scale chemical manufacturing can’t go hand-in-hand with environmental stewardship. From my side of the fence, I’ve seen firsthand how thoughtful process adjustments can bring down solvent consumption and waste. For compounds like 1-Bromo-2,4-dinitrobenzene, traditional nitration and crystallization steps produced large volumes of acidic waste. We invested early in on-site neutralization capacity—a move that’s paid dividends in both compliance and cost savings.

    Solvent loops now recycle much of the toluene and acetonitrile phases that used to get discarded. Staff incentives reward suggestions that bring down water and energy usage without sacrificing output quality. Waste minimization isn’t just a compliance box to tick; it brings down insurance premiums and positions our firm to offer long-term pricing stability. Our client partners expect responsible sourcing, and we welcome those conversations, even when it means a harder look at the bottom line.

    Supply Chain Resilience and Raw Material Integrity

    Managing the supply chain for critical reactants proves just as crucial as refining the reaction itself. Any hiccup in the bromobenzene or nitrating acid stream halts production quickly. Years of dealing with changing import tariffs, raw material shortages, or carrier delays taught our procurement staff to double-source wherever possible and engage directly with primary feedstock producers. We favor long-term supplier contracts, regular site audits, and cross-checks for incoming purity.

    As demand shifts with trends in specialty chemicals, we buffer inventory against both seasonal swings and market volatility. That approach shields customers from price spikes or shortages, even as we strive to keep lead times reliable. When global events—be it a port closure or new export control—threaten continuity, lines of communication open up across teams. Operations updates reach our buyers promptly, keeping everyone aligned, no surprises hidden behind email curtains.

    Collaborative Approach: Working with Customers on Unique Needs

    Sure, every manufacturer claims a willingness to adapt. The reality is that it takes both knowledge and systems to actually deliver tailored product batches. Over years, we’ve developed an internal system that allows both R&D and plant operators to quickly translate special requests into actionable process controls. You need tighter particle size distribution for a specific analytical method? We adjust milling and screening. Someone needs minimized trace metal content for catalysis work? Extra controls add to the recrystallization workflow and post-production filtration.

    Many of these adaptations arise through close conversation with end users. Our plant supervisors and QC analysts often join those calls, so nothing gets lost in translation between need and execution. This collaborative cycle cuts down iterations and helps deliver not just a chemical, but a solution that works for the project at hand. That’s how real trust builds, batch after batch, order after order.

    Lessons Learned: Mistakes and Value of Experience

    No manufacturing operation moves forward without setbacks and lessons. Early on, we underestimated how much humidity control mattered for long-term stability in airfreight shipments. Another time, we discovered over-filtration can strip out trace product wanted for some analytical calibrations. Each challenge leads to a deeper pool of know-how, so we store both positive outcomes and “don’t repeat” tales in internal process manuals. Continuing education and honest communication prevent repeated errors and keep teams motivated to maintain, and raise, the bar.

    Peer feedback at industry conferences and standards forums often validates what we see in our own runs. Connecting with others in the field, sharing real numbers from actual production lines, not just glossy brochure results, strengthens our understanding of where this compound fits into science and industry. Each year, fresh voices and ideas push even established manufacturing teams to refine protocols and look beyond the obvious.

    Looking Forward: The Next Chapter in 1-Bromo-2,4-Dinitrobenzene

    Future prospects for this chemical remain strong. We keep seeing creative new uses emerging from collaborative research. The rise of green chemistry encourages process reviews that looked unnecessary just years ago, and pushes us to keep improving how we recover and regenerate solvent, how we manage energy use, and how we deliver even tighter specifications.

    End-user needs evolve season by season. Analytical demands grow steeper as detection limits push down. Regulatory environments grow both stricter and more transparent. Adaptation comes natural after years at the heart of chemical manufacturing. For our team, 1-Bromo-2,4-dinitrobenzene isn’t merely another name on a list; it represents progress earned by daily commitment to precision, communication, and responsible production.

    Manufacturing isn’t just about vessels and beakers—it’s about relationships, accountability, and lessons learned hands-on. Working with this compound all these years taught us to connect micro-level details to macro-level outcomes. We remain ready to help the next generation of scientists, engineers, and innovators bring both new products and discoveries to life.

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