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Trans-2,3-Dibromo-2-Butene-1,4-Diol

    • Product Name Trans-2,3-Dibromo-2-Butene-1,4-Diol
    • Alias trans-2,3-Dibromo-2-butene-1,4-diol
    • Einecs 259-281-2
    • 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

    165344

    Chemical Name Trans-2,3-Dibromo-2-Butene-1,4-Diol
    Molecular Formula C4H6Br2O2
    Molecular Weight 241.90 g/mol
    Cas Number 50586-19-7
    Appearance White to off-white crystalline solid
    Boiling Point Decomposes before boiling
    Melting Point 110-114 °C
    Solubility In Water Soluble
    Density 2.24 g/cm³ (calculated)
    Synonyms Trans-2,3-dibromo-but-2-ene-1,4-diol
    Storage Conditions Keep container tightly closed in a cool, dry, and well-ventilated place
    Inchi InChI=1S/C4H6Br2O2/c5-3(1-7)4(6)2-8/h7-8H,1-2H2/b4-3+

    As an accredited Trans-2,3-Dibromo-2-Butene-1,4-Diol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing A 25g amber glass bottle with a screw cap, labeled "Trans-2,3-Dibromo-2-Butene-1,4-Diol," includes hazard and handling information.
    Shipping Trans-2,3-Dibromo-2-butene-1,4-diol is shipped in tightly sealed containers, protected from moisture and light. It should be packed according to chemical safety regulations, using appropriate hazard labeling. Transportation must comply with applicable local, national, and international regulations for handling halogenated diol compounds. Store at room temperature and avoid incompatible substances during transit.
    Storage **Trans-2,3-Dibromo-2-Butene-1,4-diol** should be stored in a tightly sealed container in a cool, dry, and well-ventilated area, away from direct sunlight and incompatible materials such as strong oxidizers. Protect from moisture and sources of ignition. Clearly label the container, and ensure storage in accordance with local chemical safety regulations and laboratory best practices.
    Application of Trans-2,3-Dibromo-2-Butene-1,4-Diol

    Applications of Trans-2,3-Dibromo-2-Butene-1,4-Diol in Industrial Manufacturing

    Trans-2,3-Dibromo-2-Butene-1,4-Diol serves as a reactive intermediate in specialty chemical synthesis, specifically targeting several downstream sectors requiring precise halogen functionalization. Manufactured to high specifications, its applications expand mainly within advanced polymer modification, pharmaceutical intermediates, agricultural chemistry, flame retardant development, and specialty coatings.

    1. Modified Polyester Resin Production

    Major polyester resin manufacturers utilize this compound during copolymerization to introduce halogen atoms into backbone structures. Incorporation enhances flame resistance without adversely affecting mechanical performance. It allows processors to meet stringent safety protocols, especially in transit packaging and electrical insulation material lines. Manufacturers refine the dosing protocol through pilot trials, ensuring quality consistency across batches.

    Industry compliance standards

    • UL 94 Flammability Standard (Underwriters Laboratories)
    • RoHS Directive 2011/65/EU and amendments
    • REACH (EC 1907/2006)
    • ISO 4589 for oxygen index testing

    Typical usage ratio

    • 1.5 – 3.5 wt% relative to total polyester monomer feed
    • Exact loading determined by target LOI (Limiting Oxygen Index) and end-use certification requirements

    Downstream process integration

    • Direct addition to molten esterification reactors with controlled mixing
    • Dosing at initial monomer charging or post-esterification, depending on copolymer design
    • Product purity critical for process throughput and color retention

    Final product types

    • Flame retardant polyester films and sheets
    • Safety-critical insulation laminates
    • Fire-resistant automotive interior panels
    • Certified flame retardant cable jackets

    2. Pharmaceutical Intermediate Synthesis

    Specialty API and intermediate producers use trans-2,3-dibromo-2-butene-1,4-diol as a building block during synthesis of certain active ingredient scaffolds. The compound’s dual bromine atoms facilitate specific substitution, cyclization, or elimination transformations in alkene-containing molecules. Use in cGMP-regulated facilities requires strict adherence to validated purification and analytical methods to prevent halogen impurity carryover.

    Industry compliance standards

    • ICH Q7 (Good Manufacturing Practice for Active Pharmaceutical Ingredients)
    • USP General Chapter <661> (Plastic Packaging Systems and Their Materials of Construction)
    • 21 CFR Part 211 (FDA cGMP for Finished Pharmaceuticals)
    • EP 10.0 European Pharmacopoeia

    Typical usage ratio

    • 0.9–1.3 molar equivalents per target intermediate formation step
    • Final equivalence refined during route scouting and catalyst selection

    Downstream process integration

    • Batch addition to high-purity solvent systems with continuous temperature monitoring
    • Serves as the halogenating or chain-extending reagent in key steps
    • Trace metal and residual halide content controlled via in-process QC checks

    Final product types

    • Brominated pharmaceutical intermediates
    • Halogenated heterocyclic scaffolds
    • Active pharmaceutical ingredients for oncology research
    • Specialty fine chemicals for contract research organizations (CROs)

    3. Flame Retardant Additive Manufacturing

    Industrial compounds and masterbatch producers integrate this raw material into custom flame retardant blends used for polyolefin, polyurethane, and epoxy systems. Its reactivity profile enables permanent polymer modification rather than mere additive dispersion, providing long-term stability against heat and UV exposure. Bulk dosing systems employ continuous monitoring to maintain precise halogen loading and avoid over- or under-treatment.

    Industry compliance standards

    • IEC 60695 Series (Fire hazard testing of electrical equipment)
    • EN 13501 (Fire classification of construction products and building elements)
    • GOST R 53315-2009 (Russian Federation, flame retardancy requirements)
    • ISO 17334 (Rubber and plastics – Reaction to fire tests)

    Typical usage ratio

    • 0.75–2.0 wt% in final masterbatch concentrate
    • Ratio adjusted based on polymer substrate and target burn rate reduction

    Downstream process integration

    • Extruder dosing during masterbatch compounding stage
    • Reactive blending with co-monomers under controlled shear rates
    • Homogeneity ensured via dynamic mixing and quality control via bromine content analysis

    Final product types

    • Fire-resistant cable-grade masterbatches
    • Flame retardant epoxy prepolymers
    • Fire-resistant polyurethane foams used in furniture and transit applications
    • Low-smoke flame retardant insulation materials

    4. Agrochemical Intermediate Preparation

    Crop protection chemistry companies use this compound in the synthesis of selective brominated intermediates for fungicide and insecticide actives. The dual halogen sites allow for regioselective downstream derivatization, providing improved control over biological activity and environmental decomposition profiles. Production protocols require closed system handling and environmental monitoring to prevent occupational and environmental exposure to unreacted brominated substances.

    Industry compliance standards

    • FAO/WHO Specifications for Plant Protection Products
    • OECD Guidelines for the Testing of Chemicals
    • ISO 9001:2015 Quality Management System for chemical production
    • REACH Annex III Data Requirements

    Typical usage ratio

    • 1.0–1.6 molar equivalents per target agrochemical active ester or amide intermediate
    • Titration refined for downstream coupling efficiency and waste minimization

    Downstream process integration

    • Integration immediately prior to selective bromination or Michael addition step
    • Solvent selection critical to yield and segregation of byproducts
    • Final active isolation includes hydrolysis and crystallization filtration stages

    Final product types

    • Brominated fungicide synthesis intermediates
    • Pesticide active ingredient starting materials
    • Pre-cursor molecules for selective insecticidal compounds
    • Specialty intermediates for herbicide manufacturing partners

    5. Specialty Coating and Surface Treatment Production

    Manufacturers engaged in protective surface coatings leverage this diol as a reactive crosslinker, where the brominated sites offer adhesion improvements and controlled crosslink density. Particularly in anti-corrosive and marine coatings, its integration supports compliance with stringent salt-spray resistance and halogen emission requirements. The introduction stage is carefully temperature-controlled to suppress side reactions and maximize coating uniformity.

    Industry compliance standards

    • ISO 12944 (Paints and varnishes – Corrosion protection of steel structures by protective paint systems)
    • ASTM D3276-15 (Standard Guide for Painting Inspectors)
    • IMO PSPC (International Maritime Organization Performance Standard for Protective Coatings)
    • ISO 7724 (Colorimetry for coatings quality)

    Typical usage ratio

    • 0.5–2.5 wt% within coating formulation’s total solid fraction
    • Loading optimized for film thickness and end-use durability testing

    Downstream process integration

    • Metered addition to main resin kettle before final pigment dispersion
    • Entry at crosslinking step under inert gas conditions when color stability required
    • Quality tracking via bromine titration and solvent retention checks

    Final product types

    • Marine-grade anti-corrosive topcoats
    • Protective coatings for bridge and infrastructure steel
    • Halogen-modified spray and dip coating formulations
    • Weathering-resistant pipe and tank linings
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    Certification & Compliance
    More Introduction

    Trans-2,3-Dibromo-2-Butene-1,4-Diol: Practical Insights from the Manufacturer’s Side

    What Trans-2,3-Dibromo-2-Butene-1,4-Diol Offers in Actual Plant Settings

    Working hands-on with halogenated intermediates highlights which molecules make production life easier, and which ones demand extra care. Trans-2,3-Dibromo-2-Butene-1,4-diol stands out for its reactivity and stability across several process stages. In daily operations, this compound delivers consistent results thanks to its molecular backbone, characterized by the dibromo substitution at C-2 and C-3, joined by terminal hydroxyl groups at C-1 and C-4. Most operators will see it arrive as a white crystalline solid, with a moderate melting point that helps during batching and transfer, especially compared to some oils and viscous byproducts others encounter in the brominated intermediate category.

    This material comes with a chemical formula C4H6Br2O2 and a molar mass just above 245 g/mol. In day-to-day production, clear guidelines emerge around its controlled deployment—thanks to the industry’s commitment to quality, our batches undergo repeated purity checks, keeping contamination from unwanted isomers or trace residues below a practical threshold. Operators often note that the trans isomer form yields less side-reaction material, making purification and downstream management simpler. That purity translates into better yields, less rework, and—over time—fewer complaints about downstream cleanliness or filter clogging.

    Unlike mono-bromo alcohols, trans-2,3-dibromo-2-butene-1,4-diol supports chemoselective transformation while reducing the number of reaction steps in many syntheses. This is not just theoretical: pilot line trials show reaction times drop considerably versus workflows using less functionalized building blocks. Seasoned chemists appreciate how both ends of the diol enable tailored functionalization, including nucleophilic substitution and elimination steps, plus classic protection-deprotection sequences where needed. So, you don’t just get two bromine handles for subsequent chemistry—you also gain precise entry points for stepwise build-out, limiting waste and off-spec formation.

    Practical Benefits over Other Brominated Intermediates

    Looking at regular runs, other dibromoalkenes have trouble matching the reaction coverage or waste minimization that trans-2,3-dibromo-2-butene-1,4-diol pulls off. In production, cost and waste are always under scrutiny. Batch distillation and midstream analysis prove this compound generates less halogenated residue in both water washes and organic solvent streams. Fewer side products at the plant scale also mean less time dedicated to troubleshooting batch problems or cleaning up. During storage, it proves less prone to degradation than some mono-bromo analogs that yellow or polymerize after just a short time in suboptimal conditions. The crystalline structure doesn’t just look good on a report—it translates to straightforward handling with reduced risk of caking, unnecessary exposure, or need for complex containment.

    Process engineers notice serious differences during scale-up. Trans-2,3-dibromo-2-butene-1,4-diol doesn’t emit the heavy odor associated with some lower-molecular-weight brominated hydrocarbons, improving mask compliance and overall working conditions. In campaigns where halogen control requirements matter—not just for the immediate shop but for downstream compliance—its higher thermal, air, and light stability create margin for error and reduce loss rates. Some products may drift in melting range or pick up water content even with short exposure; this diol resists those pitfalls, and repeated lab checks prove its shelf-life without extra drying.

    But talking shop-floor details, what people return to is waste segregation and solvent recovery. Fewer organobromine residues get trapped in the evaporator, saving on both cleaning cycles and solvent bills. Customers running continuous or semi-batch processes benefit from predictable filtration, with filters loading up less often on tarry side fractions. Quick tests show lower levels of bromide and organic extractives in the completed batches—a big help on waste treatment and cost control.

    How Operators Can Get Consistent Use from This Compound

    For manufacturers like us, regular downstream partners in the pharma, coatings, and specialty chemicals markets always want proven consistency. Trans-2,3-dibromo-2-butene-1,4-diol fits into this request better than earlier dibromo diols, which tended to throw variability between batches due to strictly controlled isomerism. Over several years and iterative campaigns, our approach replaced crude batch bromination protocols with staged addition and real-time titration control. This turned out to be the chief reason for our improvements in color, melting point range, and impurity suppression.

    End-users say it integrates well in small molecule synthesis, particularly where both hydroxyls will see modification, but the central alkene handle must remain untouched until later in the sequence. Its robust performance in this area allows for controlled epoxidation or further bromination, with a tendency to avoid undesirable polymerization or over-bromination problems. In diverse resin formulations, where reactive functionality needs to be distributed cleanly along the backbone, our product completes the job with minimal impact on final resin color or viscosity drift during curing.

    Careful moisture management remains a recurring theme in maximizing outcome. Despite strong crystalline properties, operators should keep drums sealed until immediate use—a standard best practice on any busy shift, but critical as trace water will open up degradation pathways in open containers. Years of operation confirm that handling under nitrogen or low-humidity conditions gives the best returns, keeping the product at full reactivity. Even with robust protocols, accidental exposure does happen, so we opt for HDPE-lined drums and fast-turn inventory strategies. That way, product integrity holds from batch release all the way through to final blending, whether the customer is scaling up kilograms or metric tons.

    Insights Drawn from Technical and Operational Challenges

    Every process brings a learning curve, especially as needs shift from pilot projects to bulk production. With trans-2,3-dibromo-2-butene-1,4-diol, some initial runs prompted a lot of troubleshooting—mainly related to the initial presence of unwanted geometric isomers. In response, we tightened up raw material specs and rebuilt our purification loops, allowing better isomer separation and pushing our trans content to the forefront. As a result, customers spot less contamination in extractions and report cleaner NMR fingerprints for their critical intermediates. This has had a ripple effect: quality control teams can release finished goods on shorter timelines, and QA reports less manual rework.

    On the analytical side, we leaned into refined techniques—gas chromatography and high-resolution mass spectrometry—to catch even trace impurities, especially halogenated byproducts that might pass earlier detection methods. This revealed several insights: earlier suppliers often let alpha, beta isomer ratios slide, creating downstream inconsistencies. By prioritizing spectroscopic monitoring and strict acceptance levels, batch-to-batch reproducibility improved, and over time so did trust from process partners minimizing need for incoming tests on their end.

    Health, safety, and environmental officers care about the fate of residual organics in plant effluent. We mapped those out, balancing bromine recovery from vent streams and aqueous residuals. This involved focused work with advanced carbon capture and solvent stripping systems, lowering emissions to mandated limits and recapturing usable bromides for closed-loop reuse. This makes reporting and external audit cycles smoother than in years where we handled less tailored brominated reagents. Teams see fewer “bad news” events and more manageable results from simple downstream operations.

    Differences from Alternative Building Blocks: Not Just a Substitution Game

    Alternative compounds, such as mono-brominated diols or dibromobutanes, appear similar on paper but differ in practical application. The double bromination at C-2 and C-3 with trans configuration renders this compound uniquely reliable during multi-step synthesis. From the manufacturer’s bench, the trans isomer balances reactivity with shelf stability in a way that others simply do not. Plant teams observe how bromination patterns influence both selectivity and isolation yield—meso- and cis-isomers demand more attention during purification, often dragging along impurities or producing off-color batches.

    Halogenated diols that lack a terminal alkene or diverge in stereochemistry tend to show stubborn side reactions or require extra catalyst loading. Operators dealing with those products frequently report stuck reactions or material lost to unpredictable polymerization. The trans-2,3-dibromo-2-butene-1,4-diol sidesteps these hurdles, moving smoothly through alkylation, addition, and even oxidative cleavage if the process demands. It offers handy levers—both as a protected synthon and as a reactive intermediate—making it a favorite among chemists tasked with rapid iteration.

    In high-purity segments like pharmaceuticals or advanced polymers, off-notes such as halide odor, unexpected coloration, or downstream instability cannot slide by. This compound maintains a quality profile appreciated by users who don’t want to spend time troubleshooting. This isn’t just marketing fluff—it comes from live feedback, repeat business, and regular plant visits where customers walk the floor to watch loading, QA, and packaging in real time. They often spot the small advantages—bulk density, pourability, resistance to moisture pickup—that distinguish a well-produced batch from an average one.

    Applications Supported by Reliable Material Supply

    Major customers fall into key application spheres: medicinal chemistry, specialty coatings, and advanced materials. In pharmaceutical discovery, researchers reach for this molecule to serve as a core synthon in preparing halogenated analogs with enhanced bioactivity. The compound’s rigid geometry helps in making precise modifications, while the dual hydroxyl groups—located exactly at terminal positions—facilitate selective protection, acetylation, or further halogenation without random branching. Some groups rely on it for advanced coupling chemistry, building up scaffolds where both reactivity and stability underpin their whole project timeline.

    Coatings chemists turn to trans-2,3-dibromo-2-butene-1,4-diol when durability and specific binding properties are critical. It acts as a bridge molecule, introducing brominated character into the final polymer matrix. Formulators enjoy predictable curing behavior and get tight control over color and initial tack—traits hard to secure with less refined brominated additions. Furthermore, polymer researchers report that the compound’s clean functionalization supports block copolymer creation without introducing fogging or brittle domain formation.

    In material science, experts use the molecule for surface modification, especially when preparing surfaces that must resist microbial growth or handle high exposure to harsh chemicals in their operating environment. The inherent stability and reactivity pattern allow surface engineers to graft desired groups without side reactions or unwanted cross-linking. Feedback from these sectors encourage us to continually refine our process, both in the lab and in plant conditions, driving up consistency and keeping our defect rates below industry benchmark levels.

    Innovation and Ongoing Improvements in Manufacturing

    Our team’s perspective, shaped by years in chemical synthesis, prioritizes both the lab bench and the reactor hall. Production-line feedback informs our continuous improvements: from crystallization tweaks during scale-up, to process airflow adjustments for lower odor in the plant, to fine-tuning cooling curves for optimal solidification. Some tweaks pay off in ways we didn’t anticipate until reported by operators, such as finer mesh screens or new drum-lining methods for bulk shipments.

    As end-user expectations rise—especially for nearly invisible defects that can ruin a critical downstream reaction—our analytical chemists adopt upgraded screening and statistical sampling in every batch. Real-world performance data, traced from customer plants, feeds right back into formula adjustments, standard procedures, or even packaging design. Field service engineers often note that even small physical tweaks—for example, changes to granule size during drying—make an outsized impact on mixing or dissolution rates for our downstream customers.

    We also work to lower the environmental impact across the material’s entire life-cycle. That means reducing both energy footprint in bromination steps and solvent consumption during purification. New solvent swap-outs shrink hazardous waste produced per ton of product, and trials with closed-loop bromine recovery systems recapture usable halide for future runs—a practical, not just regulatory win. Safety culture grows with hands-on practice rather than top-down mandates, as teams build experience managing halogenated reagents and proactively suggest process controls that stick.

    Supporting Responsible Chemical Production and Use

    Looking at the industry, responsible management of halogenated substances grows in importance each year. Environmental regulations continue tightening. Our plant integrates sustainable chemistry alongside customer-centric delivery. We maintain extensive documentation and transparent quality records, pushing digital batch tracking so customers can review full origin and analytical logs—a move that wins nods from auditors and supply chain partners alike.

    Investing in staff training and cross-department review ensures fewer incidents, not just on paper but across actual production cycles. Operators develop expertise in safely handling, storing, and shipping halogenated compounds under real-world conditions. Direct site visits with major partners allow us to identify focus areas, such as improving drum transport under variable weather, or working out shared best practices for loading, unloading, and local compliance needs. These actions keep projects on track, build mutual confidence, and foster honest feedback—hallmarks of shared success in specialty chemical supply.

    Waste management solutions receive regular upgrades, pairing in-process controls with updated downstream scrubbing and collection. Active work with regional recyclers and government programs yields options that did not exist a decade ago. Local teams actively collaborate with environmental groups, showing the industry’s commitment to reducing legacy pollution even as new chemistries enter the market. By combining technical know-how with practical field innovations, we offer a building block that earns its place in the modern chemical toolkit while minimizing negative impact far beyond the loading dock.

    Listening and Responding to Lab, Plant, and Customer Partnerships

    A recurring lesson from years spent producing and shipping trans-2,3-dibromo-2-butene-1,4-diol: what’s written in peer-reviewed journals matters much less than the hands-on reviews from process and plant staff. Our most-requested upgrades often begin as informal operator notes, not management policies or outside audits. Whether it’s improved closure seals, new pallets for rough terrain, or clever fixes for cold-weather shipments, feedback builds an evolving production model grounded in real experience.

    Strong supplier-customer partnerships come from transparent communication during order planning. Site tours and open-lab days help customers see firsthand the practices behind each drum, increasing trust in batch-to-batch reproducibility and application suitability. Our on-call technical team moves quickly on troubleshooting requests, whether they involve slight appearance changes or needed documentation for regulatory checks in target markets. We see our job not just as “making” a product, but as actively reducing headache and uncertainty—both upstream and down.

    Sharing knowledge strengthens both production and user outcomes. Visiting the field, talking with end-users, and working through process challenges side-by-side often brings new solutions back to our lab team. These tight feedback loops help us adapt to changing project needs or compliance shifts, without extended lag time.

    Final Considerations: The Real World Value of Trans-2,3-Dibromo-2-Butene-1,4-Diol

    Decades in synthetic chemistry make clear that quality raw materials drive project success. Trans-2,3-dibromo-2-butene-1,4-diol became an essential part of the toolkit for teams demanding straightforward processing, minimized downtime, and dependable batch results. Unlike generic brominated diols or ill-defined crude mixtures, it delivers both robust performance and flexibility across application spaces—from advanced coatings through high-stakes medicinal chemistry projects.

    Continual investment in process improvement, technical support, and safety culture pays off over the life of every batch, as partners achieve higher yields, cleaner end-products, and improved safety margins. Every delivery reflects enduring respect for technical craft and practical input from plant operators, maintenance staff, lab managers, and logistics partners. In short, we treat trans-2,3-dibromo-2-butene-1,4-diol not just as a chemical, but as a product of hard-earned trust and shared technical progress—built for real results in the facilities that rely on us every day.