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Vanadium Trioxide

    • Product Name Vanadium Trioxide
    • Alias Vanadium(III) oxide
    • Einecs 215-001-4
    • 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

    366181

    Chemicalname Vanadium Trioxide
    Chemicalformula V2O3
    Molarmass 149.88 g/mol
    Appearance Black solid
    Meltingpoint 1970 °C
    Density 4.87 g/cm³
    Casnumber 1314-34-7
    Solubilityinwater Insoluble
    Crystalstructure Corundum
    Magneticproperties Antiferromagnetic below 160 K
    Synonyms Vanadium(III) oxide
    Refractiveindex 2.1 (approximate)
    Thermalconductivity 6.0 W/m·K (at 300 K)

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

    Packing & Storage
    Packing White plastic bottle labeled "Vanadium Trioxide, 500 g," featuring hazard symbols, product details, lot number, and tightly sealed screw cap.
    Shipping Vanadium trioxide should be shipped in tightly sealed containers, clearly labeled, and stored in a cool, dry, well-ventilated area. It is classified as hazardous and may require special documentation and handling procedures. Avoid contact with acids and moisture. Comply with all local, national, and international regulations during transportation.
    Storage Vanadium trioxide should be stored in a tightly sealed container in a cool, dry, and well-ventilated area, away from moisture and incompatible substances such as strong acids and oxidizing agents. It should be kept away from food and drink. Proper labeling and secondary containment are recommended to prevent accidental release or contamination. Handle with appropriate personal protective equipment.
    Application of Vanadium Trioxide

    Applications of Vanadium Trioxide in Industrial Manufacturing

    Vanadium trioxide is a critical chemical raw material serving targeted roles in advanced manufacturing workflows. Its performance is demanded in multiple value-added sectors, including high-tech metallurgy, specialized ceramics, current-generation battery technology, and chemical catalyst systems. The following application scenarios detail actual, industrial end-uses, highlighting specific standards, practical usage levels, integration points, and finished goods delivered by downstream producers.

    1. Production of Vanadium-Containing Specialty Alloy Steels

    Alloy steel plants incorporate vanadium trioxide during the melt phase to enhance strength, toughness, and wear resistance in steel grades used for automotive, tool, and engineering applications. This use requires strict trace control and precise introduction timing to achieve desired metallurgical structures without excessive inclusion or waste. As a secondary raw material, it is dispensed to the converter or electric arc furnace, affecting micro-alloying chemistry for high-performance end products.

    Industry compliance standards

    • ISO 683-1:2022 (Heat-treatable steels, alloy steels and free-cutting steels)
    • ASTM A29/A29M (Standard Specification for Steel Bars, Carbon and Alloy, Hot-Wrought)
    • EN 10025-4 (Structural steels with alloying elements)
    • SAE J403 (Chemical Compositions of SAE Carbon Steels)

    Typical usage ratio

    • 0.03–0.15% vanadium by weight of steel melt, adjusted based on target yield strength and impact resistance grades

    Downstream process integration

    • Charged directly into molten iron during primary steelmaking or ladle metallurgy stage
    • Integrated with ferrous scrap and flux additions for uniform alloy distribution

    Final product types

    • Automotive spring steels
    • High-strength reinforcing bars (rebar)
    • Tool steels for cutting and forming
    • Wear-resistant machine parts

    2. Cathode Material in Vanadium Redox Flow Batteries (VRFBs)

    Battery manufacturers rely on high-purity vanadium trioxide for the preparation of electrolyte precursors in next-generation vanadium redox flow batteries. Chemical processing units dissolve the raw material under controlled conditions, ensuring solution quality for stable, long-life battery stacks suited for grid-level and renewable energy storage, where trace contaminants can critically impact cycling durability and voltage efficiency.

    Industry compliance standards

    • IEC 62932-2-1:2022 (Flow battery systems for stationary applications)
    • UL 1973 (Batteries for Use in Stationary and Motive Auxiliary Power Applications)
    • UN Manual of Tests and Criteria, Part III (Electrochemical cell protocols)
    • RoHS 2011/65/EU (regarding heavy metal restrictions in energy storage products)

    Typical usage ratio

    • Vanadium ion concentration in electrolyte between 1.0–2.0 mol/L, with mass loading directly dependent on intended battery energy capacity per volume

    Downstream process integration

    • Dissolved in sulfuric acid to prepare vanadium(III/IV) sulfate solutions
    • Blended and filtered under inert atmosphere and transferred to cell manufacturing or filling lines

    Final product types

    • Grid-scale vanadium redox flow battery modules
    • Containerized renewable energy storage systems
    • Hybrid grid–microgrid backup battery packs

    3. Ceramic Pigments and Glazes Manufacturing

    Advanced ceramic factories use vanadium trioxide as a chromophore to develop specific yellow, green, and blue tints in ceramic glazes and specialized pigments. During controlled high-temperature kiln cycles, its oxidation state supports vibrant metal oxide colors that maintain stability under repeated firing and exposure. Producers must monitor batch homogeneity and pigment dispersion to deliver consistent decorative and technical quality to tableware, tiles, and sanitary ceramics.

    Industry compliance standards

    • EN ISO 9001:2015 (Quality management systems for pigment manufacturing)
    • EN 1388-1 (Materials and articles in contact with foodstuffs – ceramic articles)
    • ASTM C21 (Standard Test Methods for Pigments Used in Ceramic Whitewares)
    • RoHS directives for heavy-metal limits in consumer goods

    Typical usage ratio

    • 0.2–2.0 wt% based on total pigment or glaze formulation, varied by color depth and targeted reflectivity

    Downstream process integration

    • Dispersed during wet milling or dry blending with fluxes and silica
    • Applied as an underglaze or top-glaze, then fired above 1000°C

    Final product types

    • Architectural ceramic tiles with colored finishes
    • Decorated porcelain and stoneware tableware
    • Ceramic sanitaryware with colored glazes

    4. Ammonia-SCR Catalysts for Industrial Flue Gas Purification

    Producers of honeycomb and plate-type SCR (Selective Catalytic Reduction) catalysts incorporate vanadium trioxide into titania-based washcoats for emission control. This material acts as an active phase for catalytic decomposition of NOx at power plants and industrial sites; precision dosing during slurry formulation and stringent temperature control during calcination determine ultimate conversion rates and operational lifetimes of the catalysts certified for regulated installations.

    Industry compliance standards

    • GB 30485-2013 (Emission Standard of Air Pollutants for Thermal Power Plants)
    • EN 14181 (Stationary source emissions – Quality assurance for automated measuring systems)
    • EPA 40 CFR Part 60 (Standards of Performance for NOx Emissions)
    • ISO 22241 (Quality requirements for SCR urea solutions while fitting catalysts for diesel engines)

    Typical usage ratio

    • 1–8 wt% vanadium pentoxide equivalent in catalyst washcoat; calculated as oxide product generated after in-situ oxidation from trioxide precursor

    Downstream process integration

    • Dissolved or suspended into titanium oxide and silica/alumina base slurries
    • Coated onto ceramic honeycomb cores or extrudates before high-temperature calcination and activation

    Final product types

    • Industrial SCR catalyst monoliths for coal and gas-fired boilers
    • Emission control catalyst modules for chemical plants
    • Retrofit SCR catalyst blocks for waste incinerators and marine exhaust cleaning

    5. Glass Manufacturing for UV-Absorbing and Color-Tinted Products

    Specialty glass production units introduce vanadium trioxide during batch melting to impart greenish or amber coloration and improve ultraviolet absorption properties, meeting technical as well as aesthetic requirements. Elite glassworks track melt chemistry to balance color intensity and UV cut-off wavelengths, producing sheets or containers whose optical properties comply with architectural, container, and specialty glass industry demands.

    Industry compliance standards

    • EN 410:2011 (Glass in building – Determination of luminous and solar characteristics)
    • ASTM C1036 (Standard Specification for Flat Glass)
    • EN ISO 14021 (Environmental labels for performance glazing)
    • FDA 21 CFR 175.300 (Resinous and polymeric coatings for food-contact glassware)

    Typical usage ratio

    • 0.03–0.4 wt% based on batch composition, set as a function of color strength and UV-absorption targets

    Downstream process integration

    • Introduced with other colorant oxides before melting the glass batch
    • Monitored via in-melt UV-visible spectrometry during forming and float processes

    Final product types

    • Architectural glass panels with UV-blocking tints
    • Glass beverage bottles with green or amber color
    • Specialty safety and display glass sheets
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    Certification & Compliance
    More Introduction

    Vanadium Trioxide: A Foundation in Chemical Manufacturing

    Product Insight from the Manufacturer’s Perspective

    Producing vanadium trioxide (V2O3) goes beyond hitting targets on an assay report or checking off lines on a batch sheet. Day-to-day operations at our production line make it clear this material holds a unique profile among vanadium compounds. Our plant staff have handled each lot, faced the ventilation challenges, watched the reduction reactions, and learned exactly what end users care about most—consistency, true purity, and predictable reactivity.

    With V2O3, experience has taught us that minor variations in conditions, from temperature to feedstock moisture content, can affect oxide phase development and particle size, ultimately influencing end-user applications. We manufacture primarily for ceramics, metallurgy, catalysts, and specialty chemicals. The demand curve for V2O3 tracks closely with steel production and lithium battery advancements, so global industry trends factor into our own workflows. Our teams prioritize reliable output because a faulty batch won’t just cost us revenue, it sends a ripple effect down our customers' production lines.

    Vanadium Trioxide Model and Specifications

    Most clients request the V2O3 99.9% grade—bright, deep green crystalline powder with minimal trace metals and low moisture content. Every batch comes with particle size range specifications, usually between 1 μm and 40 μm, depending on the grinding and sieving process during post-calcination handling. On our end, that means close monitoring of rotary kiln temperatures and regular maintenance to reduce mechanical contamination. We routinely carry out ICP-OES and XRD checks, not just to prove compliance, but because downstream processes struggle with unpredictable impurity spikes.

    We often see requests for tailored particle distributions or low-sodium grades from companies managing high-purity catalyst production. This isn’t a trivial matter—the presence of alkali metals or sulfur contaminants can poison catalysts or change the effectiveness of ceramics. Our operators know from experience that addressing these issues during the initial roasting stage creates a smoother run through reduction and avoids costly reprocessing later.

    Major Applications and Industry Demands

    Vanadium trioxide has held a secure role in steel alloy manufacturing, especially as a raw material for ferrovanadium and as an intermediate in the production of vanadium pentoxide. From our position at the source, we understand mills require reproducible reduction properties and controlled oxygen content. Our process controls manage that balance not just for purity, but because customers have set up their own process chemistries with tight tolerances. Sending out a batch with off-ratio oxygen triggers complaints and adjustments in furnace operations. That sort of disruption costs far more than the vanadium itself.

    Ceramics and pigment industries rely on vanadium’s unique redox properties. Our R&D team continuously field requests for specific phase structures of V2O3, especially for producing deep, consistent hues or high-durability glazes. Addition of V2O3 as a modifier in the glass-making process directly affects color, strength, and transparency. Glass manufacturers don’t just want purity—they look for batch-to-batch uniformity in particle shape to keep processing predictable.

    Emerging energy storage technologies have driven new patterns of vanadium trioxide usage, particularly as a precursor for battery electrodes. Researchers working on lithium-ion and vanadium redox batteries demand low sodium and sulfur levels to reduce side reactions that lead to battery degradation. For them, we provide enhanced analytical data packages and closely track each batch’s origin—from raw ore sourcing, through reduction and granulation—to support their documentation requirements for advanced R&D and scaling production.

    V2O3 in Comparison to Other Vanadium Oxides

    For newcomers to vanadium chemistry, the biggest source of confusion often lies in distinguishing V2O3 from related compounds like vanadium pentoxide (V2O5). Both offer pathways to vanadium metal, both serve as catalysts, but their chemical behavior and application windows diverge significantly. V2O5 remains easier to handle in air, stable at room temperature, and less sensitive to moisture. Users who need high oxidation states and stable storage go toward V2O5. V2O3 sets itself apart due to its strong reducing properties and unique role in intermediate redox applications, plus lower oxygen content, opening up metallurgical and advanced ceramics/energy applications where V2O5 cannot deliver the same results.

    Other vanadium oxides, such as VO₂, appear in specialized fields like smart glass manufacturing, but their production scale and end-uses differ. Many customers with broad technical backgrounds contact us for help sorting out which vanadium oxide best fits their process. Our technical team always discusses not just chemical formulas, but real-world process implications—reactions with atmospheric gases, volatility under heat, and impurity profiles that can lead to fouling or failures.

    Lessons Learned Through Production

    Sourcing ore and adapting reduction parameters isn't a textbook formula—each mine or recycling stream creates a slightly different set of variables. Our plant operators have learned that high-quality V2O3 comes from real-time process monitoring, sample testing, and direct feedback from customers. Earlier attempts to shortcut calcination steps resulted in off-color powders and high magnesium readings, both of which caused headaches downstream for our clients. Our investment in kiln control systems now pays off every single week.

    Another key insight: transportation and storage conditions play a much bigger role than most people expect. V2O3 can slowly oxidize to higher valence oxides if exposed to high humidity and air during storage or shipping. We ship in airtight, moisture-barrier containers, and train third-party haulers on the unique properties and risks of vanadium powders. Handling protocols developed from direct incidents—once, a delayed shipment exposed to a leaking container resulted in contamination. We upgraded all storage systems after that, and customer returns for caked or partially converted product have gone to zero.

    Supporting Advanced Application Development

    With increasing demand for vanadium in high-tech uses, we partner with several battery and superconductor developers. Their projects need not just top-grade purity, but reliable analytical data. These clients often require customization that reaches deep into our production chain—modifications in roasting time, secondary sieving, or additional vacuum drying steps. Open communication lines, phone calls, and on-site visits build trust both ways. Battery clients in particular rely on consistent phase structure and oxygen stoichiometry—if we lose control at our end, electrode quality and device efficiency both drop.

    Technical support does not end at shipment. We frequently analyze spent material and process byproducts brought back from clients’ pilot plants, searching for any patterns in performance issues. In this feedback loop, we gain direct evidence of how our manufacturing tweaks manifest in real-world processes. Once, a ceramic pigment manufacturer identified an unexpected blue hue in a batch; we pinpointed a trace chromium impurity that had crept in due to wear on a ball mill lining. Replacement of that equipment fixed the issue for good, saving us both time and repeat complaints.

    Quality Assurance Rooted in Experience

    Customer audits keep us on our toes. Technical staff and procurement teams don’t just check certificates—they want to tour the factory, view assay data, study our powder handling, and sometimes interview staff at every station. Years of meeting these audits led us to develop robust training for floor operators. Skilled workers know how to spot the subtlest off-odor in a batch or identify mechanical malfunction that could lead to contamination. Our long-term customers often cite these details as decisive when choosing a vanadium supplier.

    We don’t claim perfection, but our true value lies in our openness with partners. If a batch falls short—even on a minor point—we flag it and communicate the risks before shipment. We offer replacement or reprocessing, often absorbing the added logistics costs. This policy is not a marketing tactic but a response to direct input from loyal clients who would rather delay a run than use questionable feedstock. With compliance at the core, we routinely check for compliance not only with industry standards, but with customer-specific test protocols.

    Market Trends and Challenges

    Pricing volatility in the vanadium sector never truly settles. Steel market swings, energy storage expansion, geopolitical supply risks—all of these ripple through to us. From the factory’s perspective, price swings hit production forecasting and purchasing, sometimes forcing us to delay upgrades or expand inventory at short notice. Keeping production steady means sticking with longstanding ore suppliers and holding safety stocks—actions that require trust and negotiation, not just cost calculations.

    Environmental regulations impact vanadium production like few other metals. The process generates byproducts and emissions that require active management. Our team sees regulatory changes coming before they hit the news, through evolving customer audits and raw material declarations. We invested early in off-gas scrubbing and water treatment because state and local inspectors don’t just review documents—they visit and inspect. Our neighbors appreciate our clean record, and those relationships matter as much to us as our production yields.

    Solutions and Innovations on the Shop Floor

    Technical teams work directly with equipment suppliers to tweak process controls for better reproducibility. In the early days, we struggled with batch-to-batch variability in particle size, which led to complaints from pigment customers and failed reactions in steel foundries. By investing in real-time monitoring and feedback loops, we shortened the response time from hours to minutes, allowing for quicker adjustments during grinding and sieving. Specialized mixers keep powders from segregating during packaging. Instead of waiting for customer complaints, our QC lab screens random drums, catching issues before they ever leave the site.

    Rather than treating waste as a liability, we recover vanadium from filter dust and spent catalysts sent back by some clients. These recycling initiatives save resources for both sides and meet rising circular economy targets. The logistics involved aren't straightforward—some material requires on-site pre-treatment to prevent dangerous oxidizer buildup or contamination during transit. By working directly with end users to design safe recovery streams, we create value that benefits our bottom line and reduces community impact.

    Continuous Improvement and Looking Ahead

    Factory life doesn’t stand still, and our approach to V2O3 production evolves every year. This means adapting to shifts in global demand, responding to unexpected outages—such as COVID-related supply chain freezes—or implementing the latest analytical technology. Client priorities keep shifting too. A decade ago, steel makers set the pace; now, battery manufacturers and high-purity catalyst firms call for tighter impurity specs, smaller batches, and more documentation.

    Instead of treating V2O3 as a legacy product, our team views it as a platform for innovation. We are piloting more precise milling stages, conducting joint R&D with end-users, and following developments in vanadium mining and recycling technologies. Every lesson learned—whether from a shipment delay, customer trial run, or equipment breakdown—feeds back into our process, raising the baseline for everyone who depends on high-quality V2O3.

    Summary

    Vanadium trioxide may seem like just another commodity chemical from the outside. From the factory floor, it represents a combination of chemistry, engineering, and daily teamwork. Keeping production high-quality runs as much on skilled labor as on modern automation. Our commitment to honest communication, continuous process improvement, and proactive environmental stewardship forms the basis of every order we ship. Customers benefit not just from what goes in the drum, but from everything we’ve learned getting it there.