Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing admin@sinochem-nanjing.com 3389378665@qq.com
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Vat Brown 3

    • Product Name Vat Brown 3
    • Alias C.I. Vat Brown 3
    • Einecs 226-046-8
    • 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

    379953

    product_name Vat Brown 3
    chemical_class Anthraquinone dye
    CAS_number 1324-11-4
    appearance Brown powder
    molecular_formula C14H7NO4
    molecular_weight 253.21 g/mol
    solubility Insoluble in water, soluble in sulfuric acid
    application Textile dyeing
    melting_point Decomposes
    synonyms Indanthrene Brown RRN
    CI_number CI 47005
    stability Stable under normal conditions
    lightfastness Excellent
    color_index Vat Brown 3

    As an accredited Vat Brown 3 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Vat Brown 3 is supplied in a 25 kg woven plastic bag with an inner polyethylene liner, labeled with product name and hazard information.
    Shipping Vat Brown 3 is shipped in tightly sealed, labeled containers, typically fiber drums or bags, to prevent moisture and contamination. It should be handled as a non-hazardous dye, following standard industrial safety and transport regulations. Store in a cool, dry, well-ventilated area away from incompatible materials and direct sunlight.
    Storage Vat Brown 3 should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of ignition. Keep the container tightly closed and properly labeled. Avoid contact with oxidizing agents, acids, and moisture. Use only suitable containers to prevent contamination or degradation of the chemical. Ensure proper safety and handling measures are observed during storage.
    Application of Vat Brown 3

    Applications of Vat Brown 3 in Industrial Manufacturing

    As a direct manufacturer with over two decades of technical experience, we supply Vat Brown 3 to diverse industrial partners. Our detailed application guidance reflects sector-specific compliance, process fit, and optimized integration across real downstream categories. Please refer to the following industry applications for reference.

    1. Reactive and Vat Dyeing for Cellulose Textiles

    Major cellulosic textile mills use Vat Brown 3 for high-fastness coloration of cotton, viscose, modal, and blended fibers like PV-CO and CVC. Our technical support ensures right vatting, reducing, and oxidation protocols, controlling purity and grain size for bath penetration and migration. Typical applications include continuous and exhaust dyeing for garments, upholstery, toweling, and uniform fabrics. Fastness to light, washing, and rubbing stays consistent through rigorous process control from vatting to soaping and final finishes.

    Industry compliance standards

    • OEKO-TEX® Standard 100 Annex 4 (product class II-IV) colorant restrictions
    • ZDHC MRSL (Zero Discharge of Hazardous Chemicals) conformance
    • REACH (EC) No 1907/2006—Annex XVII restricted substances
    • GB/T 7573–2009 (Determination of formaldehyde in textiles, PRC sector standard)

    Typical usage ratio

    • 1.5–3% owf (on weight of fiber) for medium darkness; up to 5% for deep shades; dosage varies by fabric weight, liquor ratio, and exhaust vs. pad-steam process

    Downstream process integration

    • Enters after pre-treatment (desizing, scouring, bleaching) in dyeing line
    • Combined with caustic soda, sodium hydrosulfite in closed vat at 60–70°C
    • Oxidation and thorough soaping after vatting for shade fixation
    • Followed by neutralization and final rinsing

    Final product types

    • Cotton knits and woven apparel (workwear, uniforms, outerwear)
    • Cellulosic upholstery and home textile fabrics
    • Denim and twill bottom weights with brown base tones
    • Eco-certified textiles for Western export brands

    2. Wool Yarn and Piece Dyeing

    Wool processors and textile finishers apply Vat Brown 3 to cross-dye and solid dye woven, knitted, or tufted wool goods. Specialist procedures ensure complete reduction and re-oxidation without fiber damage, producing deep, even brown shades with high wash, light, and milling fastness. Adhering to restricted auxiliaries and process chemicals enables supply to global luxury, contract, and technical textile markets.

    Industry compliance standards

    • ISO 105-C10 (Textiles—Tests for color fastness, washing: wool)
    • REACH SVHC screening for banned substances
    • GB 18401–2010 Requirements—China’s National Textile Standard
    • AFNOR G07-034 (French wool product safety)

    Typical usage ratio

    • 1.0–2.5% owf depending on yarn count, wool quality, and shade depth

    Downstream process integration

    • Enter reduced dyebath post-scouring and acid neutralization
    • Apply controlled temperature ramp-up to protect fiber integrity
    • Oxidize using peroxide or air, then soap to remove surface dye and alkali

    Final product types

    • Wool suiting and outerwear fabrics
    • Premium carpets (Axminster, Wilton, tufted products)
    • Wool-acrylic and wool-polyester blends for winter knitwear

    3. Leather Coloring for Vegetable and Chrome Tanned Leathers

    Leather finishing operations utilize Vat Brown 3 during the drum dyeing stage to impart fast, uniform brown tones to vegetable or chromium tanned leather splits and full grains for footwear, automotive, and upholstery. Careful control of dye liquor alkalinity, penetration aids, and exhaust parameters prevents streaks or uneven shading. Formulations comply with restricted substances to support global leather supply chain certification.

    Industry compliance standards

    • ISO 15701:2016 (Leather—Tests for color fastness to light: Xenon arc)
    • LWG (Leather Working Group) restricted substance guidance
    • EN 71-3:2019 (Toy Safety—Migration of certain elements, for leather use in toys)
    • AFIRM RSL (Apparel and Footwear International RSL Management)

    Typical usage ratio

    • 0.5–1.5% based on shaved weight; adjust depending on hide thickness, tanning type, and desired intensity

    Downstream process integration

    • Added to dye drums after neutralization (post-tanning)
    • Combined with penetration auxiliaries and pH buffers
    • Fixed using formic acid or similar crosslinking agents at the end of the dyeing cycle
    • Followed by fatliquoring and finishing operations

    Final product types

    • Luxury shoe and boot upper leathers
    • Automotive and aviation upholstery hides
    • Bags, belts, and wallet leather panels
    • Classic brown glove leathers and workwear

    4. Technical and Decorative Paper Coloring

    Large-scale papermaking enterprises apply Vat Brown 3 in the colorant section during wet-end or size press operations. Used primarily for stationery, packaging, and decorative papers, it delivers stable, lightfast brown shades with strong acid and alkali resistance. Formulation and dosing respect papermaking chemistry, minimizing impact on sizing, filler retention, and subsequent surface coatings.

    Industry compliance standards

    • EN 646:2018 (Paper and board intended to come into contact with foodstuffs; color fastness)
    • ISO 9706 (Paper for documents—Requirements for permanence)
    • US FDA 21 CFR §176.170 (Paper and paperboard components for food contact)
    • FSC Chain of Custody (for finished goods with recycled fiber)

    Typical usage ratio

    • 0.1–0.5% dry pigment based on oven-dry fiber; rate subject to base pulp intensity, filler and pigment interaction, and wet-end chemistry

    Downstream process integration

    • Dosed into the hydrapulper or stock chest during furnish preparation
    • Alternatively applied at the size press in surface sizing applications
    • Requires stable dispersion and low particle size to avoid streaking
    • Compatible with starches and synthetic sizing agents

    Final product types

    • Decorative and art-grade paperboards
    • Corrugated and folding carton base stock
    • Stationery envelopes, labels, and colored copy papers
    • Brown technical filter papers

    5. Dyestuff Formulation for Compound Colorant Blends

    Dyestuff formulators blend Vat Brown 3 with other vat, reactive, or sulfur dyes to achieve customized brown or neutral black shades for use in exhaust, continuous, and printing processes. Our consistent supply enables batch-to-batch shade reproducibility and enhanced blending performance in automated dosing and closed-bath mixing systems, ensuring compliance across multi-fiber applications in textile coloration.

    Industry compliance standards

    • ISO 9001-2015 QMS for colorant blending facilities
    • REACH Annex XVII—substance management and traceability
    • GOTS (Global Organic Textile Standard) input chemical acceptance
    • ZDHC Gateway standards for blended dyestuff registration

    Typical usage ratio

    • 0.2–2.0% total blend ratio in standard shade formulations; proportion varies by customer job card and color target

    Downstream process integration

    • Dry blending or paste pre-dispersion in formulated color packs
    • Used in automatic dispensing systems for large-scale dyehouses
    • Quality checked for color strength, particle size, standard depth
    • Packaged and supplied for customer-specific recipes

    Final product types

    • Custom-coded dyed yarns for weaving and knitting
    • Preblended color packets for mass apparel dyeing lines
    • Specialty printed textiles using mixture pastes
    • Ready-to-use dyestuff formulas for uniform manufacturing
    Free Quote

    Competitive Vat Brown 3 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.

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    Tel: +8615371019725

    Email: admin@sinochem-nanjing.com

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    Certification & Compliance
    More Introduction

    Vat Brown 3: Quality Color from the Source

    From our viewpoint as a chemical manufacturer with decades of experience in textile and dye production, Vat Brown 3 stands out not just for its deep brown color, but also for its dependability across applications. We produce this classic vat dye in-house, managing every step from raw material sourcing to final quality control. Over the years, demand for Vat Brown 3 has shielded this product from shifting market trends, mainly because it continues to perform where consistency, resistance, and color depth matter most.

    Technical Basis and Model Details

    Within our production scope, Vat Brown 3 carries the index number C.I. Vat Brown 3 and falls under the broader group of anthraquinone vat dyes. Its chemical structure brings an indanthrone base, giving the brown hue a rich, earthy tone and extraordinary washing and light resistance. We control particle size and purity to ensure accurate shade development on cotton, viscose, and blended yarns. Years of adjusting synthesis parameters taught us that controlling impurities and granule size cuts down on spotted dyeing and patchy results, both frequent complaints from customers using low-tier sources.

    For end users, receiving the product in powder or microgranular form matters more than they may realize—pros and cons shift depending on their process design or dye bath configuration. We supply Vat Brown 3 in both standard powder and specially-treated dispersible granules. Each lot includes a Certificate of Analysis finished by our QC chemists, verifying shade strength, moisture content, and residue limits. Direct oversight over every batch—right down to which solvent was involved in the last filtration—lets us trace and address any anomalies, cutting down complaints and ensuring buyer trust.

    Performance Where Other Dyes Fail

    On the shop floor, performance counts more than anything written on paper. In vat dyeing, shade reproducibility and migration remain daily headaches. Vat Brown 3’s fastness stands out—end users turn to us for yarns and fabrics slated for high-wear items: camouflage, workwear, home textiles exposed to sunlight, and items running through industrial laundries. Time and again, those who switched from unreliable brown dyes tell us about dropouts, poor migration, or muddy, uneven color on blended fibers. Our formulation can take a tough mercerizing process and still retain its tone. It stubbornly resists fading—whether on a factory floor, a military tent, or a work uniform.

    Other brown dyes, especially sulfur and direct dye types, tempt with a cheaper price tag but never match the lightfastness and chlorine resistance of Vat Brown 3. Textile lines often choose sulfur browns for cost savings, only to run into bleeding or off-shade issues in real-world laundering. Our customers producing uniforms or contract textiles depend on Vat Brown 3 in part because it holds color after dozens or even hundreds of industrial washings. In wet and dry rubbing fastness tests, our product ranks above much of the competition, as customers running blue jeans, canvas shoes, or military textiles discover when their overseas batches fail inspection. In our own testing, we compare not just the initial shade, but after repeated soaping, exposure to artificial light, and aging—targeting the weak points that tend to emerge in field use.

    Production Insights: What Matters in Manufacturing

    Years on the manufacturing floor taught us that the raw materials and process conditions define the final color, purity, and reactivity of Vat Brown 3. Our operators keep solvent recovery loops tight and control reactor temperature swings—it all contributes to a dye lot with fewer by-products and minimal off-shade risk. Customers who have struggled with foam, sludge, or sediment clogging their machines usually trace the source back to low-grade, poorly washed dyes filled with insoluble residues. By washing, drying, and milling Vat Brown 3 under vacuum and running particle analysis on every batch, we can maintain standards others promise but fail to achieve. We track and record every step, not as a marketing trick, but from years of troubleshooting dye-house failures with clients who faced inconsistent suppliers.

    We have seen end users lose production time to dusting from powder dyes; for them, we introduced a microgranule form that pours smoothly, reduces airborne particles, and still dissolves quickly under alkaline reduction. In practice, upgrades like these emerge not from theoretical improvements, but by working closely with dyeing supervisors who need materials that fit existing equipment—open-vat, jig, and package dyeing lines alike. By listening to their complaints about dust, slow dissolution, or poor mixing, we adapted our own process and packaging to ease the burden at their end.

    Tips on Using Vat Brown 3 for Reliable Results

    Dye-house managers call us most often not about the chemistry, but about practical tips on handling. Vat Brown 3 needs proper reduction to its soluble leuco form; otherwise, shade strength and penetration drop off. We have coached hundreds of finishing lines through controlling temperature, pH, and circulation during reduction. If the batch comes out streaky, it’s often a case of poor reduction—using outdated hydrosulfite, skipping agitation, or allowing the liquor temperature to swing. Good vatting, followed by gradual oxidation and thorough rinsing, gives a level color and keeps after-treatment chemical cost down. From experience, concentrated paste additions or cold water mixing won’t bring out the best in this dye—stepwise addition to a properly heated bath remains the gold standard, especially on tightly woven cotton or deep pile textiles.

    Pre-testing on every new fiber blend pays off. Each time a customer complains about unexpected off-shades, we test for differences in fiber finish, residual alkalinity, or optically brightened goods. Vat Brown 3 penetrates better than many copper brown or azo varieties, but improper scouring or unremoved sizing will block uptake. We help users lay out clear procedures for scouring, mercerizing, or stripping fabrics before dyeing, as skipping prep steps leads to lost color yield and waste. By keeping open lines of communication, we help customers adjust their time-temperature controls—not just for color, but for resource and energy savings too.

    Comparison with Other Browns in the Market

    Some new entrants and large buyers test lower-cost brown dyes, especially those from less-controlled overseas plants, drawn by cost-per-kilo calculations. Many switch back after their first rounds of complaints when garments show unevenness or fade unevenly. Having worked with both markets, we see firsthand how Vat Brown 3 outperforms sulfur browns and most direct or reactive brown dyes in color depth, wet fastness, light resistance, and resistance to alkali attack. On polyester-rich blends, shade may shift slightly, but on pure cellulosics this product achieves unmatched reliability.

    Reactive browns can match deep shades but tend to bleed or fade when exposed to chlorine and UV rays, making them unsuitable for outdoor and institutional textiles. Sulfur dyes, while attractive for bulk-tonnage jobs due to price, have unpredictable levelling and higher risk of shading issues in continuous lines. Direct browns often suffer from bleeding and lack of resistance to repeated home and industrial laundering. Our technical team keeps up with industry tests and can point to comparative studies proving our dye’s fastness performance—always willing to share not just certificates, but actual use case performance when clients have doubts.

    Natural brown pigments and pigment dispersions interest some, but for industrial-scale fashion, workwear, or home textile use, shade variability and insufficient fastness have kept them as niche options. In our own trials, these alternatives often lag, failing to meet strict contract specifications year after year. We remain open to technical advances and alternative chemistries—but real-world testing keeps proving the value of a well-made vat dye like our Vat Brown 3 for demanding end uses.

    Safety, Handling, and Environmental Perspective

    Responsible production goes beyond revenue or process efficiency. Our investment in emission control, wastewater treatment, and employee safety exceeds local and international standards. No solvent vapors, process residues, or waste slip through untreated. Regular audits—both internal and third-party—keep us on our toes. From personal experience, cutting corners on process safety only causes greater problems later: worker complaints, failed environmental tests, and ultimately business loss.

    Our experience handling and shipping Vat Brown 3 taught us the value of safe, sealed containers and clear instructions. We provide transport-resistant drums and bags that prevent leaks or dust exposure. Warehouses and distribution points stick to clear labeling, secure stacking, and ventilation guidelines. Plant operators trust our lot traceability and safety guidance. For every delivery, we supply up-to-date safe handling instructions confirmed by our own production team’s day-to-day practice, not just copied from regulatory literature.

    We welcome tough questions about supply chain traceability, emissions, and post-use recycling. Anyone looking to source dye for responsible manufacturing can visit our plant, test our effluent management, and audit our supply origin. As regulations tighten globally and brands push for clarity, we stay ahead, invested in closed-loop production, resource conservation, and next-generation technology trials. All improvements in our Vat Brown 3 operation—low-dust granules, waste minimization, or low-energy-drying—directly reduce environmental and worker impact.

    Facing Current Industry Challenges

    Global supply chains for dye and colorant manufacturing grow more complex each year. Raw material shortages, changing import rules, and new health regulations bring new risks. Our solution is vertical integration—owning much of the upstream supply for critical intermediates, maintaining buffer stocks on site, and forming long-term delivery partnerships. In practice, we weather regional shortages with less price volatility and keep clients supplied while other sources face stock-outs or production freezes. For dye houses working to tight contract deadlines, our reliability becomes a real asset—not just a marketing slogan.

    The push for eco-labels and restricted substance compliance continues to grow. Every batch of our Vat Brown 3 meets current standards for REACH, ZDHC, GOTS, and OEKO-TEX, without sacrificing performance. Independent lot analysis tracks more than just major contaminants—it covers trace metals, aromatic impurities, and secondary by-products. In our experience, buyers demanding ‘green’ credentials find fewer headaches with dyes from stable, well-audited production rather than unknown or non-compliant origins. We support client audits and third-party certifiers routinely, making quality trackable and verifiable through the supply chain.

    Supporting Textile Innovation

    Textile product development teams ask for more from standard dye classes each year: stronger color, resistance to new washing regimens, compatibility with blends and innovative finishes. Our input is hands-on, pairing field trials with laboratory upgrades. We work with developers on pre-reduced forms of Vat Brown 3 for easier handling, lower-temperature dyeing, and minimal hydrogen sulfite residue. In turn, we get insights into downline process changes—enzyme treatments, anti-microbial finishes, and mobility-enhancing chemistry—letting us tune our dye to keep up with real-world reformulations.

    Digital printing and printing on unconventional substrates bring new challenges. Large-format printers and technical textile producers approached us to adapt Vat Brown 3 for their emerging technology. Our team responded by testing custom dispersions and micronization, adjusting surfactant balances to ensure even coverage and minimize clogging or sedimentation. In high-speed processes, avoiding costlier waste comes down to consistency and proactive formulation changes rather than just sticking with the standard product. We believe close partnership between chemical producer and textile innovator brings the best outcomes—both for performance and commercial viability.

    Maintaining Quality and Customer Trust Over Time

    Decades in this business taught us that no marketing copy replaces proven reliability. Plant managers judge us by how well they can replicate last year’s results and how much downtime the dyeing process demands. Our value comes from traceable quality, transparent data sharing, and lived experience fixing problems on the production floor, not from impossible promises or theoretical specs.

    During transitional seasons, buyers look for guidance—not just supply. We provide real production data, follow up on complaints, and run technical workshops with major accounts to solve stubborn issues in dye uptake, color bleeding, or machine maintenance. We don’t run—or hide—from batch returns, but welcome honest feedback. Every complaint prompts our technical staff to revisit the last production records, test reserve samples, and check trending problems with upstream raw materials. Confidence builds not from the absence of problems, but from solving them quickly and preventing repeat mistakes.

    Our plant investments focus on staff training, automation, and environmental upgrades. New reactors and control systems installed in recent years give us better control over temperature and pH swings, while advanced filtration lets us recover more wash solutions and cut losses. Every new efficiency finds its way not only into lower production cost, but into improvements seen by our downstream partners: higher color yield, less filter clogging, and better shelf life.

    Future of Vat Brown 3 in a Shifting Market

    Textile chemistry never stands still. Brands seek deeper colors, safer chemistries, and a smaller ecological footprint from their suppliers. We constantly test alternatives—new intermediates, greener reduction agents, and process tweaks—for both compliance and real-world usability. While Vat Brown 3 works from a classic structure, we push improvements on purity, dust-free forms, and pre-vatted solutions in response to new needs.

    In the meantime, we focus on doing the basics well: producing a brown dye that resists fading, handles tough laundering, and stays batch-consistent year after year. Our partnerships across supply chains depend not only on technical compliance, but trust—built on hard-won transparency, reliability, and action on feedback. This relentless attention to detail, learned from thousands of operator checklists and hours on the dye-house floor, defines our product and keeps us at the forefront for those who need a dye that just works—every time.