Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing admin@sinochem-nanjing.com 3389378665@qq.com
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Chrome Brown

    • Product Name Chrome Brown
    • Alias chrome-brown
    • Einecs 234-414-2
    • 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

    312345

    product_name Chrome Brown
    chemical_formula Fe2O3·Cr2O3
    color Brown
    appearance Powder
    density 4.9-5.1 g/cm³
    melting_point Variable, above 2000°C
    solubility_in_water Insoluble
    main_use Pigment in ceramics and glass
    lightfastness Excellent
    toxicity Low (take standard precautions with dust)
    refractive_index 2.5-2.6
    stability High under normal conditions

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

    Packing & Storage
    Packing Chrome Brown is packaged in a sturdy, sealed 500g plastic container with a secure lid, labelled with hazard and handling information.
    Shipping **Shipping for Chrome Brown:** Chrome Brown should be transported in tightly sealed containers, clearly labeled, and protected from moisture and physical damage. Ensure compliance with relevant local and international regulations. Store and ship in a cool, dry, and well-ventilated area, away from incompatible substances. Handle with appropriate personal protective equipment to prevent accidental exposure.
    Storage Chrome Brown should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area. Keep the storage space away from incompatible substances such as strong acids and reducing agents. Ensure that the storage location is clearly labeled and protected from moisture and direct sunlight. Keep out of reach of unauthorized personnel and handle according to standard chemical safety protocols.
    Application of Chrome Brown

    Applications of Chrome Brown in Industrial Manufacturing

    As a direct manufacturer, we supply Chrome Brown (chromium iron oxide brown pigment) tailored for key industrial sectors that require stable, long-lasting color and thermal resistance in their process environments. Below are core downstream channels where this pigment supports demanding technical, regulatory, and formulation challenges in real-world manufacturing.

    1. Architectural Ceramic Tiles & Porcelain Stoneware

    Chrome Brown is a primary inorganic pigment for ceramic producers aiming for shade stability up to 1250°C, especially where warm, earthy tones such as walnut, mocha, or taupe are specified. Large-scale tile manufacturers integrate this pigment to achieve high color saturation and minimize batch-to-batch shade drift in both single and double firing processes, with documented performance in high-alumina and high-kaolinite clay matrices. Colorfastness and chemical inertness support compliance with migration limits required for glazed surfaces used in kitchens and bathrooms globally.

    Industry compliance standards

    • EN ISO 10545-15 (Ceramic Tiles – Release of Dangerous Substances)
    • SCS Global Services LEED v4 Material Ingredients (North America)
    • GB 6566-2010 (Radiation Limits for Ceramic Tiles, China)

    Typical usage ratio

    • 2–12% by weight of the ceramic body or glaze; final dosage depends on desired chroma and firing schedule, often optimized with support from quality control colorimetry for consistent tone across large runs.

    Downstream process integration

    • Introduced during wet-milling with feldspar and kaolin, followed by spray drying, pressing, and high-temperature kiln firing (single or double).

    Final product types

    • Glazed floor tiles, porcelain wallware, outdoor paving tiles, mosaic sheets, and other vitrified surfaces requiring UV and chemical stability.

    2. Enamel Frits for Vitreous Coatings

    In the vitreous enamel sector, Chrome Brown enables color development in steel and cast iron appliance enameling, providing a neutral to warm base tone that resists yellowing during repeated firing cycles. Producers of architectural panels, kitchen appliances, and sanitary ware rely on the pigment’s consistent melting behavior, which does not significantly impair frit fluidity or contribute to surface pitting. Its inert character minimizes the risk of heavy metal leaching, ensuring enamel coatings meet safety and performance deadlines for indoor and outdoor installations.

    Industry compliance standards

    • ISO 28706-1 (Vitreous and Porcelain Enamels – Determination of Resistance to Chemical Corrosion)
    • EN 1388-1 (Food Contact Materials – Release of Lead and Cadmium from Ceramic Ware and Enamelled Ware)
    • 29 CFR 1910.1200 (OSHA Hazard Communication, USA for workplace exposure)

    Typical usage ratio

    • 0.5–8% of total frit batch; the level is set by targeted shade and interaction with other ceramic colorants, adjusted to avoid excessive opacity or loss of gloss.

    Downstream process integration

    • Added directly to the frit melt stage before quenching, or dry-milled into pre-fused frit before wet application to the metal substrate, followed by high-temperature firing (700–900°C).

    Final product types

    • Cooktop surfaces, water heater tanks, architectural façade panels, enamelled bathtubs, and oven liners meeting decorative and corrosion resistance requirements.

    3. Industrial Glass Batch Coloring

    Manufacturers of colored container and tableware glass add Chrome Brown in controlled ratios as a batch colorant, targeting amber, olive, or brown glass without introducing off-hues or compromising bottle transparency. The pigment’s high melting point and chemical compatibility ensure uniform dispersion and color homogeneity throughout the melt, and allow for flexibility in furnace operation parameters. Trace metal migration remains within international limits for food-contact and pharmaceutical glass, supporting product line expansion and regulatory inspections in export markets.

    Industry compliance standards

    • EN 1388-2 (Materials and Articles in Contact with Foodstuffs – Silicate Surfaces Release Testing)
    • USP <660> (Container Glass for Pharmaceutical Use)
    • ISO 4802-1 (Hydrolytic Resistance Test for Glass Containers)

    Typical usage ratio

    • 0.05–0.5% of total glass batch; lower levels for light amber, higher for deep brown, balanced against iron and manganese oxides to control optical density.

    Downstream process integration

    • Added to the raw material batch prior to melting in glass furnaces, homogenized with silica, sodium carbonate, and alumina; color development occurs during continuous melt at 1450–1550°C.

    Final product types

    • Pharmaceutical vials, beverage bottles, tableware, and food jars that require precise shade matching, UV light protection, and international food contact acceptance.

    4. High-Temperature Powder Coatings for Metals

    Manufacturers of heat-resistant powder coatings integrate Chrome Brown pigment into polyester or epoxy-based formulations where stable coloration is required under thermal cycling—such as barbecue grills, automotive exhausts, or engine parts. The pigment’s fine particle size and stable oxide structure prevents color shift and pigment migration during high bake temperatures, maintaining gloss and preventing yellowing after multiple heat exposures. This supports customers meeting outdoor durability and automotive OEM standards.

    Industry compliance standards

    • ISO 12944-6 (Corrosion Protection of Steel Structures by Protective Paint Systems)
    • GMW14872 (General Motors Paint Performance Standard)
    • RoHS Directive 2011/65/EU Compliance for heavy metal content

    Typical usage ratio

    • 1–6% pigment by total powder coating weight; adjusted based on resin matrix, desired opacity, and final film thickness to optimize UV and heat stability.

    Downstream process integration

    • Dry-blended with resin, filler, and other additives before melt extrusion and micronization; powder is then electrostatically sprayed and cured at 180–220°C.

    Final product types

    • Grill housings, commercial oven panels, automotive underbody parts, outdoor electrical cabinets, and garden equipment requiring color retention under heat and sunlight.

    5. Refractory Building Components

    Manufacturers specializing in high-alumina and magnesia refractory bricks use Chrome Brown to create distinctive visual markers or surface finishes for quality control, zonal identification, and architectural effect. The pigment withstands sintering temperatures above 1300°C without phase separation, and does not degrade chemical resistance during service in furnace linings, kilns, or incinerator bricks. Its granulometry allows direct mixing into refractory concrete without affecting mechanical properties.

    Industry compliance standards

    • ISO 12677 (Chemical Analysis of Refractory Products by X-ray Fluorescence)
    • EN 12475 (Testing of Chemical Resistance in Bricks and Refractory Blocks)
    • ASTM C704/C704M-20 (Abrasion Resistance Test Methods for Refractory Materials)

    Typical usage ratio

    • 0.2–2.5% depending on desired color intensity, mass of finished piece, and compatibility with aluminosilicate or basic refractory matrices.

    Downstream process integration

    • Combined with mineral aggregate and high-temperature binders before vibro-casting or hydraulic pressing; bricks or shapes undergo controlled drying and firing at 1300–1600°C.

    Final product types

    • Refractory bricks, kiln furniture, crucibles, burner blocks, and partition wall elements in high-temperature industries (steel, glass, ceramics).

    6. Artistic and Architectural Concrete

    Producers of colored concrete pavers, facade panels, and interior decorative concrete utilize Chrome Brown to develop warm, natural-looking brown, ochre, or taupe hues that do not fade with weathering or UV exposure. The pigment offers high dispersibility in pre-mix and ready-mix applications, ensuring full color development in both structural and lightweight cementitious matrices. Its inertness guarantees that efflorescence, alkali attack, and pH changes will not cause leaching, supporting long-term color retention in exposed environments.

    Industry compliance standards

    • EN 12878 (Pigments for the Coloring of Building Materials Based on Cement and/or Lime)
    • ASTM C979 (Pigments for Integrally Colored Concrete)
    • GB/T 18647 (Synthetic Iron Oxide Pigment for Cement Building Materials, China)

    Typical usage ratio

    • 1–6% by cement weight; the ratio varies with the type of aggregate, target shade, binder quality, and exposure class according to project specification.

    Downstream process integration

    • Pigment is dry-blended into cement powder before mixing with water; alternately, post-mix dosing in pre-cast and on-site applications, followed by standard formwork curing.

    Final product types

    • Color pavers, veneer bricks, decorative wall panels, terrazzo slabs, decorative curbstones, and cast-in-situ ornamental elements exposed to weather and abrasion.
    Free Quote

    Competitive Chrome Brown prices that fit your budget—flexible terms and customized quotes for every order.

    For samples, pricing, or more information, please call us at +8615371019725 or mail to admin@sinochem-nanjing.com.

    We will respond to you as soon as possible.

    Tel: +8615371019725

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    Certification & Compliance
    More Introduction

    Introducing Chrome Brown: Our Specialist Solution for Reliable Coloring

    Product Overview: Years of Know-How Poured Into Every Batch

    We have been producing chrome-based pigments for decades, and in that time, our Chrome Brown has earned a reputation among ceramics, glass, and enamel specialists for its tough consistency and color stability. Our most widely used grade runs under the model designation Chrome Brown YR02, which stands as the culmination of years of experience with oxidation roasting and controlled blending. Chrome Brown offers a deep, warm brown that covers the red to yellow-brown spectrum, and its opacity doesn’t fade in the firing or melting process the way certain organic or iron-based brown pigments do.

    What Sets Chrome Brown Apart—Experience at Every Step

    Experience has shaped every step of our manufacturing, from precise control of raw chromium and iron content to the tightly regulated calcination temperatures that fix color. The ratio and particle size range we maintain give this pigment outstanding performance. Chrome Brown becomes an integral part of the final matrix, whether it's applied in glaze formulations or melted into glass. Unlike synthetic organic brown dyes, which often lose strength or shift hue under heat, the color you see coming out of the kiln matches the color on your formulation table. Iron oxide pigments might offer some stability at moderate temperatures, but with Chrome Brown, glassmakers and ceramicists working at over 1250°C consistently report the same brown hue without leaching, fading, or unexpected chemistry.

    Understanding the Product—No Shortcuts on Purity or Consistency

    From grinding raw chromium and iron oxides in precise ratios, through controlled calcination in rotary kilns, each step draws on our commitment to consistent, industrial-scale pigment quality. Our staff checks each lot with spectrophotometry and microscope inspection, and only batches that meet those internal standards for color depth and lack of contaminants pass into final packaging. Years of in-house testing have confirmed the YR02 model maintains L*a*b* colorimetry values in brown shades ideal for technical ceramics—still earthy, never muddy or greenish.

    How Customers Use Chrome Brown in Glazes, Ceramics, and Glass

    Ceramic tile producers rely on Chrome Brown to produce earthy tones in both matte and glossy glazes. It holds up under heavy flux loads and repeated firings. Pottery glaze artists favor it for its forgiving application window—small changes in firing atmosphere have minimal impact on final results. In sanitaryware, it provides subtle ochre or brown hues without unpredictability.

    Glassworks value Chrome Brown for its ability to color mass glass batches without altering viscosity or introducing streaks. Because the pigment melts uniformly with the base glass, it avoids the clumping and uneven color spots common when using standard iron-based pigments. Decorative artists working with stained glass or pressed ware can trust that each pane will be consistent batch after batch.

    Enameling workshops use Chrome Brown to achieve vintage russet, tan, or deep caramel finishes on metals. After thousands of cycles in our own pilot lines, we know this pigment does not leach or degrade—critical for final products that must pass long-term stability and weathering tests.

    Key Performance Factors—Feedback from Real-World Production

    We have supplied Chrome Brown directly into large-volume production facilities, small-batch pottery studios, and research labs. Feedback shows that the pigment disperses evenly with common ceramic mixing media. Extended runs of glazed tile over several years always return the same batch-to-batch color values. In glassmaking, particle sizes remain fine enough to prevent haze, allowing clear and translucent brown options. Customers making cable insulators and laboratory ware also report complete color integration, both in transparent and opaque glass.

    Raw powder’s shelf life in sealed drums exceeds five years under normal storage. Once mixed in glazes or glasses, Chrome Brown retains integrity during high-shear blending, long fire cycles, and chemical attack from boron and sodium. We have handled technical assistance for clients trying to shift to lead-free or low-cadmium systems; Chrome Brown has fit right into these new, safer systems, as its chromium exists in insoluble oxide and does not contribute to regulatory thresholds for leaching.

    Comparison With Other Brown Pigments—Where Inorganic Chromium Excels

    Traditional brown tones in ceramics and glass once relied heavily on naturally sourced iron oxide, manganese, or umber. These materials often come with inherent variability based on mining source, and even after refinement, their color properties remain inconsistent. In comparison, our Chrome Brown uses synthetic production, granting strict control over every property: tone, particle size, undertone, and purity.

    Compared to iron oxide brown, Chrome Brown provides a deeper tinting strength and a neutrality that avoids drifting toward yellow or red after repeated firings. Manganese browns can give an attractive purple-brown, but they also introduce toxicity and can disrupt the acid resistance of finished ware. Our pigment’s inert chemical structure avoids this problem and complies with strict food safety and environmental standards.

    Organic pigments, even high-end synthetic browns, can offer bright clean color initially but often decompose in high-temperature or oxidative environments. This makes them poor choices for anything destined for atmosphere kilns or standard culinary ceramics. In contrast, Chrome Brown handles firing temperatures well beyond what typical organic or iron pigment mixtures can tolerate, maintaining full colorfastness at up to 1300°C. Our own long-term exposure studies—conducted in both oxidizing and reducing kilns—have borne out this difference every time.

    Our customers in the high-precision glass fields often emphasize how Chrome Brown achieves stable lightfastness even after years of sunlight and UV exposure. As compared to certain vanadium-based browns, Chrome Brown is free of the green or gray overtones that can affect glass clarity. This property proves critical for products like stained glass panels and architectural features.

    Production Expertise—Refining Every Batch for Repeatable Results

    Our production method submits every batch to a roasting stage under strict temperature profiles. By fine-tuning both time and temperature, we achieve the crystal structure that locks in color. Repeated sampling tracks both color tone and iron oxidation state, ensuring each lot lands within our modulation range. Our operators, with years in pigment manufacture, know how to detect off-spec batches before they reach the customer.

    We never rely on third-party contractors. All production, from raw mineral selection through finishing and bagging, takes place under our own roof. This means a ceramicist in Italy or a glassworks in the United States can trace every drum of Chrome Brown back to its mineral origins and roasting record—an important step for companies that regularly face audits and regulatory inspections.

    Particle size distribution often governs end-use performance in glazes and glass melts. Chrome Brown comes milled to a D90 below 7 microns, confirmed on laser diffraction instruments. This ensures rapid dispersion with minimal mixing and prevents grit or specking in fine-processed glazes. High-shear mixing lines and spray-drying units have shown no settling or color banding across multiple production runs.

    Safety and Regulatory Insight—Our Commitment to Responsible Chemistry

    Modern pigment buyers demand not just color intensity but documented safety. Our Chrome Brown composition passes independent leach testing for both US and European food contact regulations. Both chromium and iron exist as oxides in their most stable forms. These don’t dissolve out of finished ceramics or glassware even when in contact with acids or alkalis. No traces of lead or cadmium—hazards sometimes found in older formulations—appear in our assay data. We keep full ingredient transparency for every batch manufactured.

    Recent tightening of heavy metal controls in tableware and architectural glass has turned attention to legacy pigment stocks. Our Chrome Brown matches under new directive requirements, providing an option in production environments where regulatory paperwork can delay the launch of new product lines. All required pigment safety data and origin tracking come directly from our production records—not third parties.

    Long-Term Experience—Supporting Clients From Prototype Through Full Scale

    Some customers start with lab-scale R&D, evaluating Chrome Brown in beakers or small glaze trials. Once that first batch succeeds, our direct support follows through scale-up: adjusting mill settings, recommending blending windows, or helping to modify firing schedules. In more than twenty years of pigment supply, we have helped customers across five continents transition from experimental batches to continuous-line mass production. The feedback from these years shapes our process today.

    Where production faces contamination risk, such as in sanitaryware kilns, Chrome Brown responds with minimal dustiness and a high bulk density for consistent dosing via automatic feeders. Our support doesn’t end after shipment. Teams can rely on swift technical answers straight from plant engineers and chemists. There’s no waiting for brokerage communication or distributor guesswork.

    Innovation in Sustainable Manufacturing—Reducing Our Footprint

    As environmental controls tighten, our operations have changed along with the times. We have upgraded our roasting lines and vent capture systems, using closed-loop heat recovery to cut fuel use. At the same time, all process water runs through on-site filtration and recycling, lowering discharge and reducing the energy footprint per batch produced. Raw minerals get sourced from suppliers that follow both local and international environmental standards, with regular audit checks on every delivery. None of these requirements get added on as afterthoughts—they have become central to how we make pigments.

    Across the last decade, we have also worked closely with regional environmental authorities to reduce dust and fugitive emissions. Chrome Brown production lines now feature bagging and container-filling robots paired with HEPA air filtration. Reduced exposure not only keeps workers safe but also limits environmental impact at shipping and loading facilities. The stability of our product ensures that no loose powders migrate into warehouse or factory air, helping our clients as well.

    Feedback from clients in increasingly regulated territories led us to invest further in compliance verification. Every grade of Chrome Brown comes with detailed traceability and documentation—covering everything from mineral provenance to quality control signatures. Our belief is that customers should never be left in the dark about what goes into their final ceramic or glass product.

    Why Technical Collaboration Matters—Learning With End-Users

    No pigment line remains static. Our staff visits glassworks or tile factories onsite when formulation changes or new color effects create obstacles. Whether the issue lies in unexpected interaction with new glaze fluxes, or in adjusting to changes in local kiln atmosphere, our technicians work side by side with production chemists to solve real-world bottlenecks. Over the years, this partnership-based strategy has saved clients countless hours in both troubleshooting and new product launches.

    Upgrading to new process equipment sometimes exposes hidden challenges with pigment distribution or kiln throughput. We help plants fine-tune their dosing systems, mill settings, and glaze application lines to fully capitalize on Chrome Brown’s compatibility with modern, high-throughput workflows. Continuous feedback from both our staff and customers keeps the production protocol fine-tuned to current industry needs.

    Laboratories running performance benchmarking get full access to our in-house archive of parallel glaze and glass tests, giving them a leg up during initial trials. When market trends shift—such as increased demand for lead-free or more vibrant matte browns—Chrome Brown adapts thanks to these regular technical exchanges. We do not engineer pigments in isolation; rather, continuous evolution matches the blending and firing conditions our clients actually face.

    Collaboration and Growth—How Experience Keeps You Ahead

    New pigment formulations take time and years of on-the-ground industry experience. We invest those years into building production lines that offer more than just raw chemical supply. Every batch of Chrome Brown incorporates lessons learned from hundreds of collaborative projects with companies ranging from small, family-run ceramics studios to major industrial tile and glass producers.

    Consistency, regulatory compliance, and color accuracy do not arise by chance. They grow from the daily commitment of chemists, production operators, and logistic staff who know their product from ore stockpile through to final drum. By keeping all site operations in-house, by investing in cleaner, more efficient processes, and by working directly with each customer, we make certain that Chrome Brown continues meeting the evolving needs of today’s and tomorrow’s glass and ceramics industries.

    Conclusion: What Our Experience with Chrome Brown Means for You

    Choosing Chrome Brown directly from our manufacturing line means gaining access to decades of technical skill in pigment chemistry, production, regulatory compliance, and collaborative support. Our track record with this product comes from careful, detail-oriented production and an open dialogue with glassworks, ceramists, and industrial clients. Through developing Chrome Brown and evolving with stricter standards and broader applications, we have grown alongside the industries we supply.

    Whether the project aims to create delicate stained glass, durable sanitaryware, or architecturally significant tile, Chrome Brown’s roots in rigorous manufacturing, long-term reliability in color, and regulatory adherence offer a solution shaped not just by formulas, but by hands-on expertise.