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Copper Dichromate

    • Product Name Copper Dichromate
    • Alias Copper chromate
    • Einecs 236-621-6
    • 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
    VTB
    Specifications

    HS Code

    609136

    Chemicalname Copper Dichromate
    Iupacname Copper(II) dichromate
    Chemicalformula CuCr2O7
    Molarmass 243.54 g/mol
    Appearance Dark green crystalline solid
    Solubilityinwater Slightly soluble
    Meltingpoint Decomposes before melting
    Density 3.28 g/cm3
    Casnumber 13478-46-9
    Hazardclass Oxidizing agent, harmful, toxic

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

    Packing & Storage
    Packing Amber glass bottle labeled "Copper Dichromate, 100g," featuring hazard symbols, chemical formula, and safety instructions for laboratory use.
    Shipping Copper Dichromate is classified as a hazardous material due to its toxic and oxidizing properties. Shipping must comply with international regulations, using certified packaging to prevent leaks or spills. Proper labeling, documentation, and handling by trained personnel are required to ensure safety. Avoid contact with incompatible substances and environmental release.
    Storage Copper dichromate should be stored in a tightly sealed container made of compatible, chemical-resistant material. Keep it in a cool, dry, well-ventilated area away from heat, sunlight, moisture, and incompatible substances such as reducing agents and organic materials. Ensure storage is secure and clearly labeled, with limited access to authorized personnel, and follow all relevant safety and environmental regulations.
    Application of Copper Dichromate

    Applications of Copper Dichromate in Industrial Manufacturing

    Copper dichromate serves as a specialized inorganic chemical for use in oxidation reactions, pigment formulation, corrosion inhibition, and surface finishing processes. Below, we detail its major industrial application areas, highlighting specific downstream pathways based on longstanding manufacturing experience and regulatory requirements.

    1. Oxidizing Agent in Organic Synthesis

    Major chemical synthesis workshops use copper dichromate as a selective oxidant for organic intermediates, especially in the production of fine chemicals and perfume ketones. Its stability under controlled thermal conditions supports stepwise oxidation without excess by-products. Operators calibrate the process based on substrate reactivity, with careful monitoring to mitigate residue chromium(VI) in compliance with environmental discharge standards.

    Industry compliance standards

    • REACH Regulation (EC) No 1907/2006
    • EU Directive 67/548/EEC (Annex I classification for chromium compounds)
    • OSHA 29 CFR 1910.1200—Handling of chromium compounds
    • Wastewater discharge standards: GB 8978-1996 (China)

    Typical usage ratio

    • 0.5% to 3% by weight of substrate—Adjustment based on desired oxidation level and target conversion rate

    Downstream process integration

    • Feeds into batch or continuous stirred-tank reactors (CSTRs) during oxygenation step
    • Followed by in-situ reduction or aqueous quenching to neutralize residual chromium
    • Product separation via liquid-liquid extraction post-oxidation

    Final product types

    • Aromatic aldehydes for fragrance formulation
    • Pharmaceutical intermediates (e.g., substituted benzyl ketones)
    • Specialty organic acids and ketones for fine chemical markets

    2. Inorganic Pigment Precursor for Ceramics and Glass

    Technical ceramics and glass producers utilize copper dichromate for controlled green or turquoise coloration. The chromate and copper ions fuse with the base matrix at high temperatures, resulting in stable, fade-resistant inorganic pigments. Batch furnace loading and controlled atmospheric firing prevent hexavalent chromium contamination in end products and effluent.

    Industry compliance standards

    • EN 1388-1 and EN 1388-2 (metal release from ceramic and glassware into food)
    • ISO 1248—Pigments; Specifications and test methods
    • EU RoHS Directive (exemptions for certain glass/ceramic components)
    • REACH Annex XVII (restrictions on chromium compounds)

    Typical usage ratio

    • 0.1% to 1.2% calculated on total batch weight—Precise ratio varies depending on color intensity specification and target firing temperature

    Downstream process integration

    • Dosed into raw batch mixer before wet milling
    • Thermal fusion during biscuit firing (900–1300°C), enabling pigment incorporation
    • Leach testing conducted on fired disks before product release

    Final product types

    • Architectural glazed tiles
    • Stained glass panels for specialty construction
    • Colored dinnerware and sanitary ceramics

    3. Wood Preservation Treatment Systems

    Copper dichromate acts as a key preservative salt in heavy-duty timber protection, especially for railway ties, utility poles, and marine pilings. The dual presence of copper and chromium provides resistance against fungal decay and insect attack. Formulators combine the material in aqueous solutions, which are applied by pressure impregnation, followed by extended fixation under controlled conditions to minimize environmental leaching and worker exposure risks.

    Industry compliance standards

    • AWPA P5/P8—Standards for preservatives and treatment protocols
    • EN 351-1/EN 599-1—Durability of wood and wood-based products
    • US EPA Registration under FIFRA (for wood preservatives)
    • Directive 2004/42/EC (VOC limits in wood treatments)

    Typical usage ratio

    • 0.7% to 2% as Cr content, calculated according to targeted risk class and timber penetration depth

    Downstream process integration

    • Preparation of water-based treatment bath with buffered pH
    • Applied by full-cell pressure method or vacuum-pressure cycle in autoclaves
    • Curing and solid fixation phase monitored for residual leachable chromium

    Final product types

    • Railway sleepers compliant to AREMA/PTC standards
    • Telecommunications poles for outdoor utility networks
    • Harbor piling and submerged support structures

    4. Metal Surface Passivation and Anti-Corrosive Coatings

    Industrial metal finishing lines employ copper dichromate for passivating ferrous alloy components to delay corrosion and promote paint adhesion. The salt functions as an integral agent in conversion coating baths, forming adherent oxide-chromate films that withstand marine and chemical environments. Quality control measures follow standard thickness and adhesion testing, with in-process rinse water treating to meet effluent discharge benchmarks.

    Industry compliance standards

    • ASTM B201—Practice for testing conversion coatings
    • ISO 4520—Chromate conversion coatings on zinc and cadmium
    • SAE AMS 2700—Chemical passivation methods
    • 42 U.S.C. § 7412 (NESHAP for hazardous air pollutants from chromate chemicals)

    Typical usage ratio

    • 1 g/L to 5 g/L in immersion bath—Determined by substrate alloy type and specific coating thickness target

    Downstream process integration

    • Used as a component in chromating dip solutions post-acid cleaning and pre-painting
    • Rinsing with deionized water and thermal post-cure steps to set the protective layer
    • Wastewater processed through hydroxide precipitation for chromium removal

    Final product types

    • Automotive chassis components with enhanced corrosion resistance
    • Machined fasteners for aerospace and marine equipment
    • Architectural steel elements for bridges and outdoor structures
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    Certification & Compliance
    More Introduction

    Copper Dichromate: Our Experience with a Versatile Inorganic Compound

    Manufacturing Perspective: Practical Experience Meets Industrial Need

    For decades, we have worked with Copper Dichromate in our production lines. Living with the realities of large-scale synthesis and customer expectations, our perspective leans heavily on what’s practical, safe, and sustainable. Copper Dichromate, with its vivid green color and strong oxidizing qualities, earns respect in our workspaces every day. We handle this compound in forms like fine crystalline powder or granules, focusing on the best match for a customer's application—not just relying on textbook definitions but also on feedback and troubleshooting from real-world users.

    Quality That Matters: Real Standards on the Factory Floor

    Our production process revolves around precision and reliability. The Copper Dichromate we deliver is known for its consistent chemical composition: predominantly CuCr2O7, with copper content above 20% and chrome content that meets recognized industrial benchmarks. Each batch rolls off our line after hands-on inspection and laboratory checks by technicians who know how a small impurity or moisture’s influence can throw off a customer’s entire downstream operation. We select raw materials with traceability and manage every batch to keep heavy metal contamination—such as lead or mercury—well below legal and practical limits. Clients who trust us typically come from the pigment, catalyst, and specialty reagent sectors, and they expect nothing less than technical clarity delivered with every shipment.

    Consistent Performance: Our Day-to-Day Challenge

    On the shop floor, familiar challenges repeat: ensuring granule size stays within target range, maintaining shelf stability, and preventing clumping or dusting. We use tightly controlled drying environments, and our packaging process keeps air and moisture exposure minimal. By shipping Copper Dichromate in lined drums or sealed bags, we reduce the risk of caking or accidental reactivity during transport. Storage advice comes from direct experience—avoid damp areas, keep away from acids or reducing agents, and don’t overlook the importance of regular inventory rotation.

    Why Industry Keeps Coming Back: Application Insights

    Copper Dichromate stands out where a strong, stable oxidizer is needed. Some clients draw on its history in organic synthesis, transforming alcohols or aldehydes in pharmaceutical and fine chemical routes. In pigments, its intense color serves niche ceramic and glass glazing processes, imbuing final products with hues that resist fading or chemical leaching. We’ve seen manufacturers in electronics and surface finishing use it for etching or passivation, relying on its reliable oxidizing power under tightly controlled conditions. There’s no substitute for field experience; every new project brings questions about solubility, compatibility, and alternatives.

    Environmental and Safety Commitments: Facing the Facts of Hexavalent Chromium

    The core difference between Copper Dichromate and many metal salts is its hexavalent chromium content. We approach this head-on—not just as a regulatory box to check, but as a daily operational reality. Hexavalent chromium earns strict scrutiny for its toxicity and persistence. Our plant leans hard on containment protocols, closed-system handling, and air monitoring systems. Workers wear specialized protective gear, and we insist on regular training. We also partner directly with customers, helping set up local safety routines, proper personal protective equipment, and emergency spill cleanup procedures.

    On the regulatory front, we recognize many jurisdictions limit the use of hexavalent chromium in consumer-facing applications. Our technical support team spends as much time explaining legal frameworks and handling requirements as they do discussing routes of synthesis. Wherever feasible, we run pilot loads at reduced scale to verify compliance and environmental commitments before full production swings into motion.

    Differences That Matter: Copper Dichromate vs. Other Chromates and Copper Salts

    We constantly field requests for comparison between Copper Dichromate and compounds like sodium dichromate, potassium chromate, or simple copper salts such as copper sulfate or copper acetate. As a rule, Copper Dichromate offers unique properties—its oxidizing power sits squarely between sodium dichromate and less reactive metal chromates, and its stability under heat or storage makes it preferable for batch processing with extended lead times. Unlike sodium or potassium chromates, which are more soluble and easier to neutralize, Copper Dichromate offers lower water solubility—a key advantage in certain pigment or ceramic applications where slow release of chromium or lower reactivity aids process control.

    Engineering Out Exposure Risks: Lessons from Our Facilities

    From a plant’s perspective, nothing beats direct action to limit worker exposure. Automated filling stations, negative-pressure booths, and digital tracking let us cut down on dust and hand contact. We keep detailed records—real numbers, not just paperwork—on air and surface contamination, and make a point of sharing successes and failures with clients. Handling Copper Dichromate never feels routine. Even with all our controls, we encourage regular review and outside audits because real-world improvements often come from the least expected corners.

    Waste and End-of-Life: Closing the Loop Responsibly

    Industrial use means encountering waste streams—rinsates from batch reactors, equipment washes, and accidental leaks. We invest in on-site waste treatment, using reducing agents such as ferrous sulfate or sodium metabisulphite to shift hexavalent chromium into safer trivalent forms ahead of proper disposal. Neutralization is always measured, monitored, and checked by third parties. We keep detailed records not because regulators require them, but because customers—especially in Europe and North America—ask for proof that their supply partners share a commitment to environmental stewardship. Every emptied drum or used filter is catalogued and shipped off by certified handlers. We see responsible waste management as inseparable from the manufacturing process itself.

    Customer Support and Technical Guidance: Real Conversations, Real Outcomes

    Too often, users approach us with one question in mind: “Can you match my previous supplier’s material?” Our answer shifts to practicality—we focus on end use. Sometimes, a proposed process suits Copper Dichromate; sometimes a safer or more efficient substitute makes more sense. We don’t shy away from tough conversations about toxicity, storage, and long-term cost. Experience tells us that troubleshooting goes beyond the laboratory. It takes site visits, genuine discussion about workflow bottlenecks, and follow-up after delivery. Our role doesn’t end after a shipment reaches a customer’s warehouse.

    Supply Chain Stability: Meeting Global and Local Demands

    Trends in logistics shift quickly. Fewer suppliers control access to quality chromium ores. Shipping disruptions—from lockdowns or unexpected port closures—test our resilience. We manage a secure network of source mines, contract haulers, and storage depots. Every contract reflects contingency planning, not just for raw material cost swings, but for backup sourcing in case of geopolitical shifts or market hoarding. Being a manufacturer means living with raw data: port handling times, real-time shortages, and navigating customs paperwork that is never standard or predictable.

    Emerging Alternatives and Sustainability Pressures

    No experienced producer overlooks the ongoing shift to greener solutions and regulatory pressure against hexavalent chromium compounds. Researchers propose new passivation agents, organic oxidants, or environment-friendly colorants. We remain involved in these conversations, sometimes assisting in pilot studies for biodegradable alternatives or safer derivatives. Still, for many processes, Copper Dichromate remains the only option with proven track records for stability, throughput, or final product quality. Sometimes, a compromise involves dilution or stabilization additives to minimize environmental risk. We help users implement closed-loop systems or install real-time emissions monitoring, always learning from every failed attempt and every successful scale-up.

    Product Testing: More Than Just Batch Reports

    We never rely solely on initial analysis. Every batch undergoes rigorous, redundant testing across different labs—ours and third-party facilities—measuring variables like particle size distribution, purity, free moisture, and trace metal content. Unannounced grab samples are part of our routine. If a batch doesn’t meet internal standards, we halt shipment, no matter the backlog or urgent order status. By sharing testing protocols and results with clients, we build trust that extends beyond certificates of analysis.

    Technical and Regulatory Documentation: Real Support for Real Users

    Clients receive a full technical dossier—handling guides, safety data sheets, and relevant certificates—but paperwork only goes so far. Many users call to clarify interpretation, double-check storage advice, or review compatibility with new production methods. We view documentation as a living record, subject to change based on real-world results and shared lessons from field applications. Our technical team remains open to on-site visits, webinars, or remote troubleshooting, often collaborating with EHS and regulatory affairs experts to bridge gaps and prevent costly mistakes.

    Partnership for the Long Haul: Building Value Beyond a Single Order

    Repeat business isn’t built on price alone. We recognize long-term customers because we’ve solved problems together—sometimes overnight, sometimes over months of iteration. Our supply team keeps up with evolving transport regulations, our engineers upgrade packaging for new storage layouts, and our chemists adjust purity levels or batch sizes per project needs. We believe real partnership means mutual transparency, practical advice, and consistent follow-through from inquiry to successful application.

    Adaptability to Industry Shifts: Keeping Up with New Demands

    As manufacturing standards change—shaped by new technology, shifting customer requirements, or updated safety rules—our operation reacts in real time. We invest in new process equipment, pilot programs, and regular training for our staff and customers alike. Ideas for improvement rarely come from the top; they reach us from line workers, shipping crews, and the users running batch trials in their own facilities. Every modification, whether in drying parameters or drum lining material, reflects a lesson learned on the shop floor or in the field.

    Optimizing Cost Without Compromising Quality

    Production economics play a decisive role in our product strategy. We balance raw material selection, process efficiency, energy usage, and manual labor. When market conditions shift, our internal cost models guide adjustments to supply runs and contract terms. We achieve savings not by cutting corners, but by reducing batch rejections, improving packaging, and minimizing transit losses. Transparent agreements with logistics partners and customers help align expectations, so cost savings never come at the expense of safety or end product quality.

    Traceability and Data in Practice

    Every drum of Copper Dichromate carries a traceable origin story. Our digital tracing systems let us track raw ore from partner mines through every conversion step. This builds accountability—not just for the sake of audits, but because customers demand it. When downstream users seek detailed sourcing or compliance records for international markets, we provide digital logs and batch histories that stand up to real investigation. Traceability isn’t a buzzword here; it reflects daily discipline.

    Industry Collaboration: Sharing Experience, Shaping the Future

    Being a longstanding manufacturer means we join industry groups, share safety lessons, and stay ahead of regulatory trends—sometimes lobbying for clear, practical implementation timelines when laws change. We engage with competitors and allies to promote best practices, lend expertise to standards drafting, and participate in local training initiatives. Our understanding of Copper Dichromate’s risks, benefits, and limitations grows stronger through honest exchange, not just internal reflection.

    Lessons Learned: Risk Management and Decades of Experience

    The journey with Copper Dichromate teaches caution, persistence, and innovation. Every risk management plan draws on both regulatory guidance and our archive of near-miss incidents or process upsets. We place equal weight on human factors and technical solutions, giving operators and line supervisors direct input on safety improvements. Our safety culture extends to customer sites, where we offer hands-on training and crisis planning based on scenarios we’ve actually faced. Real risk management never ends with a checklist.

    Looking Forward: Meeting Challenges Head-On

    Regulations will get tougher, and customer requirements will evolve, but our commitment to safe, consistent, and responsible Copper Dichromate production remains. Our knowledge stems not just from lab books or sales pitches, but from decades of hands-on practice, facing problems and delivering reliable outcomes in settings as varied as pigments, catalysts, and electronics. We walk this path alongside our clients, always open to questions, challenges, and the chance to do better with every new opportunity.