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Cobalt Sulfate

    • Product Name Cobalt Sulfate
    • Alias Cobaltous sulfate
    • Einecs 233-334-2
    • 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
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    Specifications

    HS Code

    999178

    Chemical Name Cobalt Sulfate
    Chemical Formula CoSO4
    Molecular Weight 154.99 g/mol
    Appearance Red to pink crystalline solid
    Solubility In Water Highly soluble
    Melting Point 735°C (decomposes)
    Density 3.71 g/cm³ (anhydrous)
    Cas Number 10124-43-3
    Odor Odorless
    Ph Acidic (in aqueous solution)
    Common Hydrate Form Heptahydrate (CoSO4·7H2O)

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

    Packing & Storage
    Packing Cobalt Sulfate is packed in a sealed, blue-labeled HDPE drum containing 25 kg, with hazard symbols and product details displayed.
    Shipping Cobalt Sulfate should be shipped in tightly sealed, clearly labeled containers, protected from moisture and incompatible substances. It is classified as a hazardous material and must comply with local, national, and international transport regulations. Ensure proper documentation, use personal protective equipment for handling, and prevent release into the environment during transit.
    Storage Cobalt sulfate should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from incompatible substances such as strong acids and oxidizers. The storage area should be protected from moisture and direct sunlight, and clearly labeled. Access should be limited to trained personnel, and appropriate safety measures, including spill containment, should be implemented to prevent environmental contamination.
    Application of Cobalt Sulfate

    Applications of Cobalt Sulfate in Industrial Manufacturing

    Cobalt sulfate is a critical intermediate in multiple industries demanding consistent quality, reliable sourcing, and controlled trace element supply. As a primary manufacturer, we support large-scale production requirements by delivering cobalt sulfate that meets precise purity and safety benchmarks for downstream conversion into high-value products.

    1. Lithium-Ion Battery Cathode Materials

    Battery manufacturers use cobalt sulfate as a core source of cobalt in producing ternary cathode materials such as NCM (Nickel Cobalt Manganese Oxide) and NCA (Nickel Cobalt Aluminum Oxide). The substance enters as a salt during precursor synthesis, and purity levels directly affect charge capacity, safety, and cycle stability. Stringent handling and dedicated filtration minimize metallic and nonmetallic impurities to avoid performance deterioration.

    Industry compliance standards

    • GB/T 31485-2015 (Safety requirements for lithium-ion batteries)
    • IEC 62660-2:2018 (Secondary lithium-ion cells for EVs)
    • ISO 9001 (Quality Management in Battery Manufacturing)
    • UNI EN ISO 14001 (Environmental Management in Chemical Processing)

    Typical usage ratio

    • 35 – 60% cobalt content within the NCM or NCA precursor drying step, adjustable by target cathode chemistry
    • Exact incorporation based on final moles of LiNixCoyMnzO2 composition and batch size

    Downstream process integration

    • Dissolution and mixing in precursor reactor with nickel and manganese sulfates
    • pH control and addition of alkali for coprecipitation as hydroxide intermediate
    • Filtration, calcination with lithium source and final cathode powder production

    Final product types

    • Lithium nickel cobalt manganese oxide (NCM) cathode powder
    • Lithium nickel cobalt aluminum oxide (NCA) cathode powder
    • Rechargeable pouch, cylindrical, and prismatic lithium-ion cells
    • Battery modules and packs for automotive and stationary energy storage

    2. Animal Feed Trace Mineral Additives

    Livestock and aquaculture feed producers use cobalt sulfate as a mineral supplement to support microbial synthesis of vitamin B12 in ruminants and promote healthy growth rates in other species. Formulators dose with precise control to avoid both deficiency and toxicity, using analytical-grade material and applying strict legal restrictions for cobalt concentration in end feeds.

    Industry compliance standards

    • EU Regulation (EC) No 1831/2003 (Feed additives Authorization)
    • FDA 21 CFR 573.530 (Cobalt salt use in animal feed, United States)
    • FAMI-QS (Feed Additive and Premixture Quality System)
    • GB 13078-2017 (Chinese Compound Feed Safety Standard)

    Typical usage ratio

    • 0.1 – 1.0 mg cobalt per kg of complete feed, resulting in 0.45 – 4.4 mg cobalt sulfate per kg
    • Adjustments based on animal species, feed type, and existing dietary cobalt

    Downstream process integration

    • Pre-mix blending with other trace elements
    • Micro-dosing into feed pellet mixers or liquid supplement tanks
    • Homogenization, extrusion, and quality assurance testing for trace mineral uniformity

    Final product types

    • Dairy and beef cattle compound feed
    • Sheep, goat, pig, and poultry feed products
    • Vitamin-mineral premixes for feed manufacturers
    • Aquaculture feed formulations for fish and shrimp

    3. Electroplating Baths for Surface Coatings

    Surface finishing workshops use cobalt sulfate to formulate plating electrolytes for depositing protective or decorative layers on metals. Cobalt ions enhance deposit hardness, corrosion resistance, and blueish tone in alloys including nickel-cobalt and zinc-cobalt. Tight control of sulfates, metallic impurities, and anion contaminants ensures stable bath operation and uniform metal deposition.

    Industry compliance standards

    • ISO 4527:2014 (Cobalt and Cobalt Alloys—Electroplated Deposits)
    • ASTM B734-15 (Electrodeposited Coatings of Cobalt and Cobalt Alloy)
    • RoHS Directive (2011/65/EU, applicable lead and hexavalent chromium limits)
    • OHSAS 18001/ISO 45001 (Worker Health and Safety for surface finishing)

    Typical usage ratio

    • 20 – 80 g/L cobalt sulfate in plating solution, dependent on bath type and desired deposit alloy ratio
    • Dilution and secondary salt adjustment based on deposit rate and operational temperature

    Downstream process integration

    • Dissolving into make-up solutions for plating tank makeup
    • Continuous monitoring and correction of metal ratios during production
    • Wastewater treatment to remove residual cobalt after plating cycle

    Final product types

    • Nickel-cobalt alloy plated steel parts for automotive and electronics
    • Zinc-cobalt protective coatings for fasteners and connectors
    • Cobalt flash-plated components for aerospace and optics
    • Plated jewelry and decorative hardware

    4. Pigment and Ceramic Colorant Manufacturing

    Cobalt sulfate serves as an essential source for cobalt blue pigments and ceramic colorants. Pigment manufacturers and frit producers rely on its solubility to ensure uniform precursor blending before calcination at high temperatures. Quality targets focus on controlled particle size and absent insoluble residues to prevent speck formation or color inconsistency in glazes and glass applications.

    Industry compliance standards

    • ISO 1248:2006 (Pigments—Specifications and test methods)
    • EN 13813 (Screed material and Ceramic Floor Colorant Safety)
    • REACH Regulation (EC No 1907/2006, pigment substance registration)
    • ASTM D3721-18 (Color and Tint Strength of Dry Pigments)

    Typical usage ratio

    • 5 – 20% cobalt sulfate by weight in pigment base blends, adjusted by desired color intensity
    • Final ratio depends on targeted ceramic glaze shade and firing temperature profile

    Downstream process integration

    • Blending into silicate and aluminous matrices before high-temperature firing
    • Controlled oxidation during kiln processing for stable blue hue
    • Subsequent grinding and dispersion for ready-to-use pigment concentrate

    Final product types

    • Cobalt blue oxide pigment batches
    • Colored glass frits for architectural glass and tile markets
    • Ceramic glazes and porcelain colorants
    • Decorative coatings for pottery and enamelware

    5. Catalyst Preparation for Chemical Synthesis

    Producers of chemical catalysts utilize cobalt sulfate as a precursor for preparing supported and unsupported cobalt-based catalysts, especially for Fischer-Tropsch synthesis, hydrogenation, and hydrodesulfurization. Purity and moisture control are essential to achieve reproducible dispersion on inert carriers such as alumina or silica and promote targeted reaction selectivity. Material enters via wet impregnation or co-precipitation techniques under inert atmosphere.

    Industry compliance standards

    • ISO 9001:2015 (Process Quality Control in Catalyst Production)
    • Responsible Care® (Chemical Industry Voluntary Initiative)
    • REACH registered cobalt species with pre-notified downstream use
    • EU Regulation (EC) No 1907/2006 Annex XIV (Substance Authorization Plan)

    Typical usage ratio

    • 10 – 25 wt% cobalt loading on support, adjusted by target catalyst reactivity
    • Higher ratios for Fischer-Tropsch, lower for hydrogenation processes

    Downstream process integration

    • Wet impregnation onto calcined substrate supports
    • Filtration, drying under controlled conditions, and multi-step calcination
    • Optional reduction/hydrogen treatment prior to reactor charging

    Final product types

    • Fischer-Tropsch synthetic fuel catalysts
    • Hydroprocessing/hydrotreating catalysts for oil refineries
    • Fat hydrogenation catalysts for edible oil and specialty chemicals
    • Catalytic converters for syngas and amine production

    6. Drier Additives for Alkyd and Polyester Paints

    Paint and coating formulators use cobalt salts as oxidative driers to accelerate curing of unsaturated oils and resins in alkyd and polyester coatings. Accurate incorporation supports rapid surface tack development and thorough through-drying at room temperature, with compliance to international solvent and emission standards. Precise metering is necessary to avoid excessive cobalt, which can lead to film embrittlement or discoloration.

    Industry compliance standards

    • ISO 12944-5:2018 (Protective Paint Systems)
    • EU Directive 2004/42/EC (VOC Emissions from Paints)
    • EN 71-3:2019 (Migration of certain elements in toy coatings)
    • ASTM D5895-13 (Drying or Curing During Paint Application)

    Typical usage ratio

    • 0.02 – 0.05% metallic cobalt (as sulfate) by weight of solid resin
    • Adjustments based on resin type, film thickness, and target curing time

    Downstream process integration

    • Pre-dispersion with resin or solvent phase prior to let-down in batch mixers
    • Modular addition during millbase or post-add stage for two-part systems
    • Testing of final application viscosity and dry-to-touch time in QC lab

    Final product types

    • Alkyd enamel paint for automotive and industrial use
    • Industrial and architectural polyester resin coatings
    • Marine coatings and wood lacquers
    • Can coatings and corrosion protection finishes
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    Certification & Compliance
    More Introduction

    Cobalt Sulfate: Built for Consistency in Modern Production

    Delivering Cobalt Sulfate with a Focus on Reliability

    Manufacturing cobalt sulfate brings its own set of challenges and opportunities. In our work, we have put years into developing and scaling a process that delivers cobalt sulfate with reliable properties and stable supply. This approach drives a line of products that match the needs of battery producers, electroplaters, ceramics makers, and agricultural supplement formulators. As cobalt sulfate remains an essential raw material for these fields, we understand that mismatches in particle size, phase impurities, and trace metal content can disrupt entire downstream chains. Our team spends as much effort on process control as on the front-end reaction step. Each batch starts with cobalt raw material inspected for iron and nickel, runs through controlled leaching, and finishes under strict drying and milling protocols to produce a consistently free-flowing crystalline product.

    Out in the market, you come across several grades of cobalt sulfate. Some are tailored for batteries, some for micronutrient use, and others for specialty pigments. The trending lithium-ion battery sector has put a unique pressure on the supply chain, raising end-user requirements for elemental purity, trace metal thresholds, moisture content, and even pourability. Producers rooted in traditional routes face a different reality compared to newcomers making cobalt sulfate as a byproduct. Delivering difference in this space often comes down to mastering every minor quality lever, not just getting COA paperwork in line. Quite often, we talk with customers facing process interruptions from badly filtered, off-color, or inconsistent-density lots. We learned those lessons early and reengineered our filtration and solids handling to eliminate batch-to-batch headache. Every step, from reactor to package, remains in our hands, so we control the outcome.

    Our Approach to Purity and Model Differences

    Cobalt sulfate may sound like a basic commodity. The truth is, labels like “battery grade”, “industrial grade”, and “feed grade” carry practical significance that goes far beyond jargon. For battery makers, for example, high manganese or nickel levels can alter electrochemical performance or cut cycle life. In agriculture, trace element mix-ups could cause animal health issues or bring regulatory complications. Over the years, we have responded by developing customized grades: low-trace models for cathode precursor use, high-solubility forms for micronutrient supplements, and extra-low chloride versions for sensitive electroplating. Our 7-water hydrate, CoSO4·7H2O, stands out due to its high flowability and ease in handling. This remains our main model, due to demand in battery and plating segments, with typical cobalt content exceeding 20 percent and moisture controlled to target ranges. By focusing on one core form, we ensure customers receive the expected performance batch after batch, not surprises caused by salt residue or inconsistent crystal habits.

    Differences between manufacturers turn up in purity thresholds and contamination management. No two processes yield identical impurity profiles or hydration states. Our production line underwent independent audits, including cathode makers and plating specialists, and we maintain detection limits for iron, nickel, copper, zinc, and calcium. While some suppliers blend output or cut corners on drying, we stick to in-line monitoring that flags anything off-spec before packing. Many customers have told us how switching to our sulfate eliminated frequent process stoppages in their downstream reactions. That sort of customer feedback keeps us always striving for better controls, because in our experience, quality issues usually surface at the worst possible stage during production.

    Where Cobalt Sulfate Makes a Difference

    Feedback from the field informed how we optimized our cobalt sulfate models. Cathode material plants want robust performance and absolute consistency, because cathode precursor co-precipitation is sensitive to both trace elements and physical properties. Our battery-grade product runs through repeated dissolution and recrystallization to remove fine particles and trace metals. Each shipment brings transparency—complete batch analysis, traceability to source, and independent test results. This direct approach avoids issues like cathode discoloration, poor flow, or excess water retention. As the battery industry faces tightening specs for lithium, cobalt, and nickel salts, we know keeping ahead means listening directly to our customers.

    In electroplating, users need stability in bath chemistry. Manufacturers shifting from less pure low-cost grades to our refined model often report better plating efficiency and surface integrity. Suppliers who use mixers or offer product from blended sources can rarely match this stability. Our focus on eliminating tramp metals, which poison the plating process, turns into practical, visible results for platers. Ceramics customers benefit as well, thanks to reduced heavy metal carryover and tight hydration control that avoids slump or off-color effects. Every segment teaches us new challenges. As environmental standards evolve, trace impurity limits get stricter, so we proactively adjust our process to push these technical frontiers, not just react to new rules coming down from above.

    Reflections on Challenges in Cobalt Sulfate Supply Chains

    Challenges in cobalt sulfate production reach far beyond basic operations. Our facilities have seen the impact of geopolitical pressure, raw material sourcing shifts, and volatility in the battery metals market. Sourcing ore with traceability, complying with responsible mining initiatives, and disclosing full material provenance to top-tier clients go hand in hand now. We participate in tracing material origin, chain-of-custody audits, and close-loop quality feedback. This complexity filters down to the plant floor and emerges in the end product. When global demand spiked for battery-grade cobalt compounds, we had to defend quality over speed, as shortcutting recovery or purification leads to big headaches not just for us, but for downstream users absorbing unpredictable trace element loads.

    Cobalt sulfate production also faces tighter waste management and handling controls. Any misstep with solids recovery or wastewater treatment can bring regulatory scrutiny or environmental hazards. Our plant invested significant capital in spent solution reclaim, filtration upgrades, and water treatment to answer these calls. Harnessing a well-engineered process not only safeguards the environment but helps deliver clean product with less internal rework and saves resource bills. Our staff participate regularly in safety and technical updates, ensuring a shared focus on sustainable production. These practical investments are not box-ticking exercises—they cut long-term risk while improving safety and chemical consistency, two wins not always celebrated in bullet-point brochures.

    The Role of Cobalt Sulfate in Battery Manufacturing

    The electric vehicle wave pushed cobalt sulfate into the global spotlight. Customers now drill alphabetically through our batch data, scrutinize shipment records, and expect answers for every deviation. For battery plants, irregular sulfate affects everything from precursor slurry mixing to final pack stability. Over our years serving cathode customers, we refined control of moisture, crystal habit, and trace elements. Downstream, this directly ties into how NCM precursors precipitate, how easily they filter, and the uniformity of the final product. Missed targets here ripple through the value chain, causing off-spec batches, wasted solvent, or uneven cathode performance.

    Not every sulfate offered on the market fits this need, even at a glance. Cheap, unfiltered, or off-grade products cost less up front but break the production flow at scale. We have seen — from customer feedback and plant visits — that the cost of fixing poor input chemistry far outweighs any nominal “savings” on raw materials. Battery plants need a partner who takes upstream control as seriously as downstream quality. The experience honed from hundreds of feedback loops means we diagnose and fix trace metal drift, particle size swings, and packaging defects fast. Each year, specifications evolve, and we upgrade both our analysis technology and bulk packaging in direct response to field reports. This collaboration means customers get product dialed deep into their requirements.

    Distinct Features: Setting Cobalt Sulfate Apart

    Not all cobalt sulfate gets produced alike. Some rely on direct pressure acid leaching routes. Others feed from recycled sources or hydrometallurgical scavenging, yielding different impurity profiles. Our plant chooses input streams and leaching chemistry that optimize for battery and plating uses right out of the gate. We run parallel reactors and batch-tracking, so even in market upswings, we avoid mixing disparate lots that dilute consistency. Our customers appreciate not seeing unpredictable results due to blended production. The tight controls built into the process trace from ore to final bag. Each bag delivered aligns with a documented chain of analysis, and any claim about content can be traced to original tests. Such rigor sets apart a true manufacturer from resellers who lack process visibility.

    Model-wise, our production centers on the heptahydrate form, CoSO4·7H2O. Compared to anhydrous or monohydrate forms, it delivers practical ease in measuring, handling, and storage safety. It easily dissolves in water, supports stable dosing, and handles smoothly in auto-feeding or bag-dump operations. The crystal structure resists deliquescence under ordinary conditions, and tight filtration ensures few fines or off-colors land in the final product. Some users ask about anhydrous models or intermediate hydrates for specialty processes. We collaborate one-on-one for such needs, adjusting not just hydration state but grain size, flow, and even packaging.

    Lessons Learned from End Use and Client Feedback

    Direct feedback from users tells the truest story of differences. Ceramic pigment makers need clean cobalt sulfate not just for color, but to avoid streaking, low-temperature fusing, or phase separation. Electroplaters care less about color and more about the trace-metal signature and solubility—stubborn residues or poor bath chemistry undercut their reliability. Battery plants put trace nickel, manganese, and iron content under a microscope, then send detailed data back with every shipment if anything looks out of place. Maintaining honest, technical dialogue, not hiding behind formulas or certificates, helps us diagnose and respond faster than waiting for an outside lab to point out mistakes.

    Early on, differences in input materials caused run-to-run swing in trace contaminants. We reengineered the dissolving, filtration, and drying line to tackle those at their root. Our operators and quality team hold regular debriefs where both product failures and wins get discussed openly. Not every batch matches ideal targets, but continuous improvement guides our adjustments. This regular review closes the loop straight from user experience into process engineering. Our facility has planned for both high-capacity surges and lean periods, because nothing disrupts quality like shortcutting the fundamentals to chase end-of-quarter output numbers.

    Working Toward the Future of Cobalt Chemistry

    The future of cobalt sulfate depends not only on technical purity but also transparent sourcing and sustainability. We watch global metals trends closely, as new mining projects come online, supply chains react, and regulatory regimes expand their reach. Clients demand lines on source, extraction ethics, byproduct minimization—not just chemical quality. This mindset shapes every improvement, from traceability systems that follow each shipment back to its mine to bag labeling with QR-enabled data sheets covering every analysis parameter.

    Users tell us about regulatory audit trends, changing scrap recovery incentives, and even direct requests to start pilot batches of magnesium-, sodium-, or potassium-free blends for new lithium-ion chemistries. Adaptation to these evolving needs keeps us innovating outside the lab, directly on the production line. We have witnessed larger manufacturers backing out of segments when margins crunch, leaving customers with supply gaps and downstream panic. Our approach, staying focused on core strengths and backing honest dialogue, forged long-term partnerships that weather both price cycles and regulatory shifts.

    Cobalt Sulfate: At the Center of Responsible Chemistry

    No chemical product exists in isolation. Cobalt sulfate sits at a critical intersection of mining, refining, global trade, and end-user reliability. The premium that users pay rests in peace of mind: stable supply, predictable results, and a manufacturer willing to stand behind commitments in both quality and traceability. Feedback from environmental groups, supplier audits, and technical teams all converge as we improve the product. This constant response keeps us from becoming disconnected from the shifts in both downstream demand and upstream pressures.

    Every step, from source inspection through final QA, works to reduce surprises and deliver a product the industry leans on. Our experience—grounded in practical chemistry, real-world failures, and lessons learned from countless collaborations—refines every shipment. Rather than seeing cobalt sulfate as a generic commodity, we treat each batch as a reflection of all the people and processes that brought it to fruition. We focus on direct relationships, open data, and meaningful improvements to build reliability that supports not just our business, but the next generation of energy, technology, and industrial chemistry that runs on these raw materials.