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Cobalt(II) Bromide

    • Product Name Cobalt(II) Bromide
    • Alias Cobaltous bromide
    • Einecs 233-264-6
    • 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
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    Specifications

    HS Code

    626904

    Chemical Name Cobalt(II) Bromide
    Chemical Formula CoBr2
    Molar Mass 218.74 g/mol
    Appearance Red-violet crystalline solid (anhydrous); green crystalline solid (hexahydrate)
    Melting Point 678 °C (anhydrous)
    Boiling Point 1300 °C (anhydrous, decomposes)
    Density 4.92 g/cm³ (anhydrous, 20 °C)
    Solubility In Water Very soluble
    Cas Number 7789-43-7
    Crystal Structure CdCl2-type (rhombohedral)
    Odor Odorless
    Magnetic Property Paramagnetic

    As an accredited Cobalt(II) Bromide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Cobalt(II) Bromide, 100g: Sealed amber glass bottle with hazard labels, white screw cap, product code, and manufacturer's branding.
    Shipping Cobalt(II) Bromide should be shipped in tightly sealed containers, protected from moisture, and labeled as hazardous. It must comply with relevant regulations, marking it as toxic and possibly an environmental hazard. Transport must prevent spills or breakage, and emergency instructions should accompany the shipment. Only qualified personnel may handle shipping.
    Storage Cobalt(II) bromide should be stored in a tightly sealed container, kept in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizing agents and acids. Protect the chemical from moisture and light. Ensure containers are clearly labeled and kept away from sources of ignition or heat. Store at room temperature, following all relevant safety guidelines.
    Application of Cobalt(II) Bromide

    Applications of Cobalt(II) Bromide in Industrial Manufacturing

    Cobalt(II) Bromide supports advanced production across multiple industrial sectors where precise catalytic, electrochemical, and material properties are required. As a direct manufacturer, we supply strict-grade material for sensitive and regulated downstream applications. The following key industries represent real-world scenarios where this raw material plays a critical performance role in formulation and device assembly.

    1. Catalysts for Hydroformylation in Fine Chemical Synthesis

    Many large-scale chemical plants use cobalt(II) bromide as a co-catalyst in hydroformylation reactions involving olefins and syngas, especially for aldehyde and alcohol synthesis. It enhances the performance of cobalt carbonyl systems by modifying the catalytic cycle, improving yield and regioselectivity for industrial alcohols, acids, and plasticizer intermediates. The raw material integrates into the reactor stage where catalyst preparation occurs, requiring strictly controlled dosage and purity to meet downstream product safety and quality audits.

    Industry compliance standards

    • REACH Regulation (EC 1907/2006) for chemical registration and trace impurities
    • ISO 9001:2015 certifications for production process control
    • Process operator HSE protocols for cobalt compounds
    • Chemical safety management by OECD guidelines

    Typical usage ratio

    • 0.2–2.5 mol% relative to cobalt metal in catalyst batch, adjusted for desired reaction rate and selectivity depending on substrate and product specification

    Downstream process integration

    • Direct addition during catalyst charging step prior to pressurization with syngas in autoclaves
    • Completely dissolved in medium for homogeneous catalysis
    • Rigorous mixing and temperature ramp required to activate cobalt complex

    Final product types

    • C8–C13 aldehydes for plasticizers (e.g., 2-ethylhexanol)
    • Branched alcohols for surfactant synthesis
    • Fine chemical intermediates for fragrance and flavor synthesis

    2. Preparation of Cobalt-Based Rechargeable Battery Electrodes

    Cobalt(II) bromide acts as a precursor for the fabrication of advanced electrode active materials in lithium and sodium battery manufacturing. Many battery makers use it during the wet-chemical co-precipitation synthesis of layered transition metal oxides, tailoring particle size, electronic phase, and impurity levels for cathode materials. Controlled supply is essential since trace bromide or other halide residues can influence cycle life, charge rate, and overall battery safety.

    Industry compliance standards

    • IEC 62660-2 safety test methods for lithium-ion battery cells
    • UN 38.3 transport regulations for finished cells
    • ISO/TS 16949:2016 for automotive battery components
    • GADSL material reporting (automotive sector)

    Typical usage ratio

    • Stoichiometric addition based on final Co content in cathode; trace halide control <100 ppm in finished oxide material, adjusted for required battery chemistry (NCA, NCM, etc.)

    Downstream process integration

    • Dissolution in aqueous solution for co-precipitation of metal hydroxides
    • Thermal decomposition during solid-state reactions under controlled atmosphere
    • Multiple washing and filtration steps to minimize bromide residue

    Final product types

    • Nickel Cobalt Manganese (NCM) and Nickel Cobalt Aluminum (NCA) cathodes for rechargeable lithium-ion and sodium-ion batteries
    • Energy storage module cells
    • Automotive battery packs and power tools

    3. Glass and Ceramic Pigments Manufacturing

    Glass and ceramic factories employ cobalt(II) bromide in specialty pigment formulations such as blue-to-purple colorants for art glass, tiles, porcelain enamels, and lamp tubes. It imparts coloring during high-temperature melting and sintering, achieving unique hues via interaction with other metal oxides. Raw material traceability is crucial to ensure finished articles meet both aesthetics and food-contact safety norms, especially for consumer packaging, artware, and lighting industries.

    Industry compliance standards

    • EN 1388-1/2: migration of elements from ceramic ware
    • FDA 21 CFR Part 175.300 for food-contact coatings in the United States
    • ISO 6486-2:2012 for release of metals from ceramic articles
    • RoHS Directive (2011/65/EU) for hazardous substances in electrical goods

    Typical usage ratio

    • 0.01–0.5% by weight in glass batch or glaze formulation; adjusted by target shade intensity and transparency, always below regulatory migration ceilings for cobalt and halides

    Downstream process integration

    • Added during initial batch melting in furnace or mixed with glaze slurries
    • Undergoes high-temperature treatment (700–1200°C)
    • Requires full homogenization with silica and flux components

    Final product types

    • Art glass sheets and colored bottles
    • Glazed tile and ceramic dinnerware
    • Decorative porcelain and glass lamp components

    4. Synthesis of Homogeneous Catalysts for Organic R&D

    Research institutes and API manufacturers synthesize highly specialized homogeneous catalysts using Cobalt(II) bromide as a starting material for forming storable, air-stable cobalt-ligand complexes. These catalysts play a critical role in fine chemical transformations such as C–H activation, hydrocyanation, and cycloisomerization under laboratory and pilot-plant conditions. Carefully controlled precursor addition governs reproducibility, catalyst yield, and minimization of trace contaminants in high-purity end products.

    Industry compliance standards

    • IUPAC purity specifications for fine chemical reagents
    • GMP (Good Manufacturing Practice) for pharmaceutical intermediates
    • US EPA hazardous waste and handling regulations
    • Sigma-Aldrich, Alfa Aesar quality specifications for catalog reagents

    Typical usage ratio

    • 1–10 mmol CoBr₂ per 100 mmol ligand, refined by target complex and reaction scale; excess generally avoided to ensure downstream product purity

    Downstream process integration

    • Added as crystalline salt to anhydrous solvents in glovebox or Schlenk line under inert atmosphere
    • Mixed with multi-dentate ligands to form air-stable complexes
    • Subsequent purification for R&D or pilot plant trials

    Final product types

    • Custom cobalt catalysts for pharmaceutical synthesis
    • Fine chemical building blocks
    • Reference catalysts for academic and industrial R&D

    5. Bromide Source in Halide Exchange and Chemical Sensing

    Instrumentation manufacturers and specialty chemical producers utilize cobalt(II) bromide as a bromide source for halide exchange reactions and preparation of brominated organic intermediates. Additionally, it finds application in solution-phase electrochemical sensors and analytical standards in laboratories evaluating halide ion concentrations. Precision formulation is required to maintain solution molarity, avoid ionic interferences, and provide reliable output for high-end instrumentation and analytical applications.

    Industry compliance standards

    • ASTM D1246 for bromide in water analysis
    • EPA Method 300.0 for ion chromatography
    • ISO/IEC 17025:2017 for accredited laboratories
    • GLP (Good Laboratory Practice) for reference standard prep

    Typical usage ratio

    • 0.05–1 mol/L in laboratory solutions; varies by required detection sensitivity and calibration range for instrumentation

    Downstream process integration

    • Dissolved for direct use in analytical or preparative chemistry
    • Introduced during halide metathesis or as an ionic additive in sensor assembly
    • Storage under controlled atmosphere to retain bromide content and avoid moisture-induced degradation

    Final product types

    • Electrochemical halide sensors
    • Brominated organic reagents
    • Certified ionic calibration standards for laboratory QC
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    Certification & Compliance
    More Introduction

    Cobalt(II) Bromide: Direct from the Manufacturer’s Bench

    A Closer Look at Cobalt(II) Bromide from the Production Floor

    Cobalt(II) Bromide doesn’t draw headlines. In quiet corners of chemical manufacturing, though, it’s a blue-violet solid that finds its way into process rooms, fume hoods, and glassware more often than most people realize. In the factory, team members prepare it from cobalt carbonate and hydrobromic acid. The moisture content, purity, and crystal form demand strict attention, because chemists on the other end rely on batches performing with predictable consistency. As a producer, the hands-on experience with each reaction batch has shown us how much small details matter from synthesis to drying—and down to packaging. It doesn’t matter if a drum holds twenty five kilos or a single glass bottle ships for analytical use: out-of-spec material creates problems elsewhere.

    From Raw Metal to Fine Chemical

    Our typical Cobalt(II) Bromide product offers a minimum assay of 98% CoBr2. We monitor trace metals like iron, nickel, and copper, because even a few parts per million can ripple through a catalyst preparation or laboratory reaction. We keep water content low through controlled drying, which helps prevent unwanted hydration. Anhydrous solid is difficult to prepare without contamination, so decades of production allow us to recognize proper color and texture by eye before a sample even reaches the lab for formal analysis.

    Bulk batches follow established steps. Raw cobalt—a powerful transition metal in its own right—starts off as a dull, lumped metal. After dissolving with hydrobromic acid under strictly inert conditions, the solution is filtered for particulates and evaporated. During evaporation, controlling atmosphere and temperature takes priority or the product will hydrate or react with air, altering purity and crystal structure. Finished material takes the form of deep red to violet crystals for the anhydrous grade, or pink hydrated flakes when processed for less stringent roles. These physical forms have direct impact on shelf stability and reactivity, especially for scale-up or laboratory screening.

    Understanding Where Cobalt(II) Bromide Fits

    Cobalt(II) Bromide stands apart from other common cobalt salts by its halide anion. Chlorides and sulfates may seem interchangeable at first, but from the manufacturer’s view regular use shows their applications diverge. In the manufacture of alkylating agents, bromides enable cleaner reactions, particularly in organic transformations involving Grignard chemistry or alkyl halide coupling. Many academic and process R&D groups find that finely tuned bromide sources improve yield and selectivity, especially for complex heterocycle formation or cross-coupling.

    Producers on our plant floor field requests for both anhydrous and various hydrated forms. In catalyst manufacture, water often poses complications. Excess moisture may deactivate organometallic complexes or skew stoichiometry, so users choosing between our anhydrous and hydrated types frequently discuss their preferences directly—sometimes requesting customized blends or extra drying steps. Those conversations help us refine production and preserve the fine distinctions that drive outcomes for downstream users.

    During electrochemical research, bromide’s redox characteristics open doors that stems from differences in standard electrode potentials versus chloride or nitrate salts. Our electrochemistry clients tell us that lower background noise and more stable electrode performance stem from cleaner, purer bromide batches. This insight echoes internal findings from in-house research, which regularly checks how minor impurities—especially halide cross-contamination—impact conductivity and reaction selectivity. Cobalt(II) Bromide isn’t selected on price but rather for very specific outcomes in chemical and materials development.

    Working Hands-On with Cobalt(II) Bromide

    On the production line, the unmistakable color transition marks the end point of a reaction. Brick red powder signals the anhydrous material, which can attract moisture and become clumpy if stored out of dry atmosphere even for a few hours. Team members working in material handling rooms rely on glove boxes or desiccator transfer protocols just as in advanced laboratories. It isn’t enough to list out specifications. Each batch is sampled and tested to ensure that users—from academic chemists scaling reactions to industrial groups mixing tonnage—receive material that behaves as they expect.

    One of the tasks we handle daily involves adjusting for the unique hygroscopic nature of bromide. Unlike more robust salts like cobalt sulfate, CoBr2 demands quick transfer between vessels. Shipment in glass ampoules or high-barrier bags cuts down risk of hydration, a lesson earned over years seeing the consequences of careless packaging. Hydrated samples come tightly sealed with water content measured by Karl Fischer titration, meeting research demands for controlled experiments.

    Direct Applications: A Manufacturer’s Perspective

    Cobalt(II) Bromide doesn’t occupy the same volume as commodity salts in batteries or ceramics, but its impact in specialized fields is outsized. High-purity batches move primarily into three areas: organic synthesis, advanced materials research, and catalyst production. Manufacturers of complex pharmaceuticals prefer high-purity bromide because it can introduce bromine into intermediates more cleanly than other agents, minimizing by-products and improving isolation. Laboratory researchers often use cobalt(II) bromide for cross coupling reactions, where its solubility and reactivity profile differ from cobalt chloride or acetate, often achieving higher yields.

    The demand from OLED or magnetic material developers has grown in recent years. Our own technical relationships with materials scientists put us at the interface of trial-and-error innovation, where cobalt(II) bromide’s ability to generate unique complexes opens options not achievable with other cobalt compounds. Internal testing has shown that cobalt(II) bromide complexes display magnetic and electrical properties distinct from sulfate or nitrate analogs, feeding applications from spintronics to chemical sensors.

    Electrochemical coatings—particularly where controlled bromide release into baths determines deposit morphology—draw on our expertise with large-batch consistency and cross-batch analysis. These applications reward attention to batch history, so we maintain comprehensive records of every drum leaving the facility. This practice helps partners trace any anomaly to its source, whether it traces to a raw material or environmental control during production.

    Each client project often brings new uses or customization requests. Since production takes place under direct supervision, feedback loops between client, R&D, and plant leadership close quickly. If a buyer specifies tighter limits on sodium or calcium, or requests an atypical hydration state, our job is to adjust process conditions while maintaining throughput. This isn’t something easily achieved by a trader or distributor; full-scale production knowledge is essential to make nuanced changes that keep downstream reactions on track.

    Navigating Challenges Unique to Manufacturing Cobalt(II) Bromide

    Producing Cobalt(II) Bromide in-house means facing certain realities head-on. The supply chain for high-purity cobalt presents hurdles unlike those for more abundant metals. Cobalt sourcing is never routine, given geopolitical and environmental pressures on mining regions. Navigating these challenges requires advance planning, long strategic partnerships, and regular audits of both vendor performance and compliance with international standards. Solving for traceability across origins isn’t just bureaucracy—it shows up in routine assays whose results document the journey from ore to packaged chemical.

    Environmental and occupational hazards around hydrobromic acid handling drive continuous investment in ventilation, automated equipment, and emergency protocols. No amount of theoretical risk assessment matches insights gathered from years of hands-on work with corrosive reagents. Tight controls on acid vapor management prevent off-gassing, corrosion of apparatus, and maintenance headaches. Regular staff training and investment in personal protective equipment ensure safety for every kilogram produced, not just batches destined for critical research.

    Packaging operations bring their own lessons. Delivery failures from years past illustrated the damage imparted by improper seals or transit exposure. Glass breaks under careless handling, while plastic containers can admit too much moisture. Multilayer packaging developed under pressure from clients in humid regions cut loss rates and ensured that the shipment arriving at the end user met original specifications. As manufacturers, we invest constantly in stability studies, taking materials from storage rooms to simulated long-haul transport in order to verify shelf life and performance at point of use.

    Comparing Cobalt(II) Bromide with Related Chemicals—From Practice, Not Theory

    Cobalt(II) Bromide often gets compared with cobalt chloride, sulfate, and acetate salts. The difference comes down to more than just counterions. Cobalt chloride, for instance, is easier to obtain, stores more readily, and costs less. In reactive chemistry, though, chloride tends to be less nucleophilic and has shown limitations in certain alkylation and organometallic routes. Bromide’s larger, softer anion enables better leaving group behavior and more rapid ligand exchange, a fact demonstrated in internal comparative trials. Cobalt(II) sulfate, meanwhile, serves bulk roles in ceramics or pigment synthesis, but lacks the solubility and reactivity to stand in for bromide in advanced chemical synthesis.

    Users in catalysis research tell us that bromides introduce new selectivity or efficiency to hydrogenation reactions. Our technical support has often walked clients through switching between salts, analyzing not just the technical merits but also practical trade-offs with hygroscopicity and waste disposal. The learning curve can be steep for those accustomed to more robust cobalt salts, so we provide hands-on support, including test samples and feedback tracking, grounded in direct production experience. Rarely do textbooks capture the subtle differences that arise batch after batch on an operating floor.

    Differences extend to environmental impact and regulatory compliance. Bromide handling and disposal rules differ from comparable practices involving chlorides or nitrates. Manufacturers working with bromide bear unique responsibilities around containment and reporting, especially for international shipments. From the earliest contract discussions, we walk clients through likely paperwork and documentation needs, having already solved similar challenges for other projects. This producer-based approach saves clients time and streamlines audits by referencing firsthand batch history and process validation rather than relying on secondhand assurances.

    Supporting Innovation and Research with Reliable, Flexible Chemical Supply

    Our experience has repeatedly shown that supply flexibility is as important as purity for research-driven partners. Industrial researchers scaling a new complex or pathogen detection platform, for example, may require unusual grades, atypically sized packaging, or split shipments over long project timelines. Keeping direct control over all steps—from raw metal arrival to packaged drum—lets us accommodate these requests with minimal fuss. Distributors can’t always pivot this quickly, but the tight integration between our production, lab, and packaging units lets us cut response times and troubleshoot effectively with clients.

    Process improvements rarely sit still. Lab staff work closely with engineers to iterate on filtration methods, drying temperatures, or washing solvents as new industrial requirements cross our desk. For Cobalt(II) Bromide, tweaks in process design have improved not only throughput but also minimized losses and improved energy efficiency. On the plant floor, subtle adjustments in crystallization timing or filtration speed affect both appearance and purity. Years of experience with these parameters reveal patterns that don’t show up in data sheets but save time and costs for end users. We capture these details across lot histories for reference as project needs evolve.

    Project-driven work also motivates continuous upgrades in analytical methods. Standard wet chemistry gives way to advanced spectroscopic and chromatographic assays, letting us verify trace impurity content with ever-better resolution. This lets academic collaborators and R&D partners order Cobalt(II) Bromide fit for highly sensitive work. Pass-fail grades on specifications aren’t enough—our value rests on constant refinement, comparative benchmarking, and troubleshooting side-by-side with researchers at the cutting edge.

    Cobalt(II) Bromide as Catalyst and Research Enabler

    Catalyst researchers favor Cobalt(II) Bromide for its ability to support hydrogenation, oxidation, and cross-coupling. Early organometallic studies laid the foundation, but process improvements over decades keep pushing performance upward. Today, advanced fine chemical and pharmaceutical producers tweak support materials and ligands for better product selectivity, often requiring bromide salts with known hydration states and minimal by-products. Our role as manufacturer involves running comparison batches, verifying reproducibility, and archiving process changes to meet future audit demands.

    In specialty glass and ceramic production, Cobalt(II) Bromide enables color modulation distinct from cobalt oxide or nitrate. The hue and chemical stability these applications seek depends not only on the cobalt source but the exact ratio of bromide to metal. Here, as with catalysts, consistency brings real value. Research teams evaluating the impact of bromides versus other cobalt sources in glass formation share feedback that feeds our production review cycles. We keep records of these collaborative efforts, using lessons from failed and successful projects to optimize next runs.

    For materials science researchers, it opens doors to new magnetic, luminescent, and redox-active compounds. Preparing these in high purity can demand tweaks in batch filtration, hydrobromic acid concentration, or wash steps to prevent trace contamination. Here, direct manufacturer input often shortens the development time, and our flexible process design allows for quicker turnaround of pilot batches for experimental use.

    Closing Thoughts from the Manufacturer’s Floor

    Day in and out, making Cobalt(II) Bromide means hands-on engagement with raw metal, strong acid, and careful observation of batch behavior. Time spent walking the plant, watching color change as solutions evaporate and crystals form, offers new lessons in chemistry and process management that spreadsheets miss. Careful feedback from clients shapes both the product and production process, keeping us tuned to shifting priorities in research and manufacturing.

    Chemists, engineers, and researchers seeking high-purity Cobalt(II) Bromide depend on reliable supply, full traceability, and deep production experience. Our role isn’t just shipping containers—it’s matching the realities of daily production with technical demands, process adjustments, and logistics. The result is a product line that adapts to scientific progress, keeping users supplied with exactly what the next batch, experiment, or production run demands.