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HS Code |
971965 |
| Product Name | Vat Red FBB |
| Chemical Class | Vat dye |
| Color Index | CI Vat Red 13 |
| Appearance | Red powder |
| Chemical Formula | C20H12Br2N2O2 |
| Molar Mass | 492.13 g/mol |
| Solubility | Insoluble in water |
| Application | Textile dyeing |
| Light Fastness | Excellent |
| Heat Resistance | High |
| Shade | Bluish red |
| Main Fiber Applications | Cotton, viscose |
| Cas Number | 1324-57-4 |
| Melting Point | Decomposes |
| Toxicity | Low |
As an accredited Vat Red FBB factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging for Vat Red FBB features a sealed 25 kg fiber drum with inner polyethylene liner, clearly labeled for industrial use. |
| Shipping | Vat Red FBB should be shipped in tightly sealed, clearly labeled containers, protected from moisture and direct sunlight. It is advisable to store and transport it in a cool, dry, and well-ventilated environment. Follow all safety and environmental regulations, and ensure compatibility with other materials during transit to prevent contamination or hazardous reactions. |
| Storage | Vat Red FBB should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of ignition. The chemical should be kept in tightly sealed containers to prevent moisture absorption and contamination. Ensure proper labeling and avoid contact with strong oxidizing agents. Use appropriate personal protective equipment when handling and always follow local regulations for chemical storage. |
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Purity 98%: Vat Red FBB with purity 98% is used in cotton dyeing, where it ensures vivid and uniform red coloration. Particle size D50 <5 μm: Vat Red FBB with particle size D50 <5 μm is used in textile printing, where it provides high-resolution and smooth print patterns. Lightfastness grade 7: Vat Red FBB with lightfastness grade 7 is used in outdoor fabric applications, where it delivers prolonged color retention under sunlight exposure. Stability temperature 130°C: Vat Red FBB with stability temperature 130°C is used in polyester fiber dyeing, where it maintains color integrity during high-temperature processing. Insolubility in water: Vat Red FBB with high insolubility in water is used in resist printing techniques, where it prevents dye migration and achieves sharp pattern definition. High dispersibility index: Vat Red FBB with high dispersibility index is used in continuous dyeing machines, where it enables efficient and consistent dye application. Residual alkali content <0.2%: Vat Red FBB with residual alkali content <0.2% is used in yarn dyeing, where it minimizes fiber damage and optimizes dye uptake. Molecular weight 540 g/mol: Vat Red FBB with molecular weight 540 g/mol is used in viscose staple fiber production, where it promotes deep penetration and even color distribution. Heat stability up to 140°C: Vat Red FBB with heat stability up to 140°C is used in automotive textile manufacturing, where it provides reliable color fastness under thermal stress. Solvent resistance high: Vat Red FBB with high solvent resistance is used in coated fabric systems, where it enhances durability against cleaning agents and solvents. |
Competitive Vat Red FBB prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.
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Tel: +8615365186327
Email: admin@ascent-chem.com
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For over ten years, our team has worked daily with vat dyes in batches large and small. Vat Red FBB has become the backbone of our vat dye offerings not only because of its rich, vibrant color but also for its reliability in production environments that demand consistency. We designed this pigment for those who need a straightforward, workhorse red with deep shade and lasting power. We start from high-purity raw materials and use an extended oxidation step to lock in the color, so mills and factories can expect fewer rejected lots and better results, even with hard-to-control water sources. Our approach adds stability to every drum, building confidence among dye house teams.
The textile market always pushes for stronger color fastness and cleaner performance, especially with stricter global requirements. Over the years, we have faced increasing demands from mills in South Asia, Eastern Europe, and South America. The pressure for a dye that won’t run, fade, or stain white areas is constant. Our response is simple: focus on color depth and repeatability. Vat Red FBB reliably hits the mark with solid wash and light fastness properties. We perform round after round of fastness tests, both in-house and using outside labs, confirming performance under exposure to UV, multiple washing cycles, and even sweat. These results allow us to claim real-world durability, drawn directly from our own testing records. The process avoids shortcuts, and every shipment comes from a controlled line, built off years of feedback from top mills.
Not all vat reds deliver the same intensity or handle the same working conditions. Many factories have struggled with inconsistent lots in the past, leading us to develop a process for fine-tuning particle size and filtration. We run high-speed dispersion checks after reduction to confirm smooth flow and examine the powder under microscopy daily. This extra care helps us prevent residual grit or undissolved particles that can cause speckling or clog bulk equipment. The color shade for Vat Red FBB sits clean, not muddy, with a brightness that holds even at lower concentrations. This quality makes it a reliable choice for both deep reds in 100% cotton and for subtle pink tones in fancy blends. Over years of factory trials, we’ve learned that a small adjustment in the reduction bath can change the final shade, so we supply clear, tested protocols for dyehouses.
Vat Red FBB typically arrives as a deep burgundy powder with a steady particle size distribution. The feel is fine and soft, targeting a mean particle diameter between 3 and 5 microns. We choose this size for faster dissolution in reduction baths and less residue during dyeing. Application works best between 55 and 60 degrees Celsius, using standard sodium dithionite reduction. The pigment tolerates water hardness better than weaker grades we tested. Our lines run daily moisture and pH checks, and every outgoing package must meet our in-house criteria for solubility. The dye does not release strong odors or hazardous fumes under normal handling. Those who have worked with other reds in the vat category will notice faster wetting times and less foaming, which leads to less rework. All of this sits atop our efforts to build a cleaner, safer workspace, with fewer complaints about dusting or workplace exposure.
Most clients who use Vat Red FBB look for maximum coverage on natural fibers. It bonds deeply with open-weave cottons and shows solid yields on mercerized goods or combed ring-spun yarns. Denim mills share positive feedback about the depth of blue-black and black-overdyed shades, as Vat Red FBB serves as an intense underlayer beneath full indigo programs. Piece dye houses often reach for this pigment to achieve rich reds and burgundies for shirtings and uniforms. For rotor yarns and coarse-spun fabric, the dye penetrates reliably with minimal strike-lengthening or uneven pick-up. The balance of sticking power and full reduction means less red back-staining and less machine downtime between shade changes. We have documented these outcomes from dozens of daily customer site visits, refining our guidance for new adopters and troubleshooting across regional water qualities, machine ages, and local chemical add-ons.
Every dyehouse has its favorite reds, and switching involves both risk and expectation. Vat Red FBB sits between the deeper, blue-leaning reds and the more orange-leaning alternatives. Over multiple sampling campaigns, we see that our pigment gives a cleaner red than Vat Red 10 or basic vat scarlet grades, even at half dosage. Dyers who have tried both always remark on the depth of shade at lower pick-up, which translates into real savings on chemical inputs and less load on afterwash steps.
The improved particle stabilization means that fading under fluorescent lighting or UV exposure stays below acceptable limits, where cheaper reds might turn brown or even out-of-place pink after a few months in sunlit storage. Meanwhile, the wet rub and dry rub scores remain higher than most direct dye alternatives, which sometimes bleed onto linings or hands after repeated handling. This aspect allows end-users—garment finishers, in particular—to skip extra fixatives or costly cationic aftertreatments. The pigment profile adapts equally well to both batch and continuous processes, so mill managers never have to worry about one-off behavior during scale-ups.
From long stenter frames to rotary drum dye houses, the feedback stays consistent: Vat Red FBB makes controls easier. The highly purified powder handles both open-width dyeing and package dyeing. On direct yarn-dye routes, the pigment wets out swiftly, which saves both time and rinse water. We maintain a technical support desk staffed by practical dyers who have supervised thousands of commercial runs using Vat Red FBB on OE, ring, and sueding lines. Most questions center around how closely this pigment tracks historical performance curves or matches legacy shade cards. For mills aiming to replace older recipes, we routinely run side-by-side shade matching on standard reference fabrics, offering colorimetric data for direct approval.
Our team focuses on avoiding surprises: no sudden pH drops in the reduction bath, no thick floating scum, no color shift after oxidation. It comes down to knowing the quirks of each process, such as the need for rapid aeration after reduction to prevent shadow lines, or wisely controlling temperature ramps to avoid streaks. We share custom tips for tricky fabrics—poly-cotton blends, for instance, that need more open liquor ratios to spread the color evenly. Years of on-site trials have shown that mills working under high-volume, low-margin conditions still prefer Vat Red FBB for its steady bath exhaustion and less build-up in screen or jet nozzles.
Colorfastness means little today if the product brings environmental headaches or workplace complaints. Our approach with Vat Red FBB always includes attention to cleaner chemistry, controlled handling, and minimal side effects. We keep heavy metals to trace levels, targeting below major global benchmarks. Batch outputs undergo regular checks for aromatic amines, azo-content, and formaldehyde residues, and we do not permit any batch to ship without passing both internal and third-party screening. The spent liquor after vat dyeing typically shows lower COD and BOD measurements due to optimized reduction efficiency. Combined with high uptake on the fiber, this balance helps facilities meet discharge regulations and earn positive marks on their environmental audits.
Worker safety also guided our product choices: low dusting grades limit airborne exposure, and the powder mixes cleanly into reduction vats without clouding the work area. We support customers with safety datasheets, application seminars, and practical guidelines on PPE, not just as documents but through live sessions, sometimes walking production lines to check mixing and ventilation firsthand. Our clients build their reputation not just by producing beautiful shades, but by running safer, more compliant work floors—objectives we help realize every day.
The textile sector races forward, with trend cycles driving designers toward new fabric types or color-matching needs every season. We keep pace by holding a rolling improvement plan for Vat Red FBB. By tracking client complaints and batch return data, we spot any drift in color shade or handling and react quickly. Shifting local chemical supply chains, changes in water chemistry, and the spread of high-speed digital dyeing systems all press us to keep samples and process notes ready for any scenario. We actively maintain dialog with technical teams from mills across three continents, learning which new blends or yarn types have entered the market and updating our production to suit. No detail from the field goes ignored: from the stickiness of a reduction residue to the stability of a five-year color standard.
Working with dyehouses in wet, humid climates taught us a few hard lessons. Batches exposed to monsoon conditions would sometimes absorb too much moisture, leading to clumping and slower dissolution. The fix came through tighter humidity control of our storage areas and a new inner bag design, which blocks ambient water vapor. For clients in drier regions with mineral-heavy water supplies, the issue shifts to scaling or powder buildup. Detailed pilot tests led us to tweak our formulation to tolerate higher calcium and magnesium content without precipitating or causing centering rings in soft-flow machines.
Another common story surrounds fast shade shifts for trend orders—clients get requests out of the blue for specialty reds late in the season. Time never allows for a full new approval cycle, so we keep referencing libraries of typical client recipes and offer quick-turn guidance to hit those trends. By studying the actual absorption curves on their own fabrics, we suggest tailored bath times and rapid aeration points. Over the years, this quick response prevents missed deadlines and keeps orders moving.
On the compliance front, client audits often ask for detailed traceability and certification data. We built digital batch records that trace every Vat Red FBB drum to its raw starting points, enabling textile buyers to confirm origin and production conditions. This system answers questions before they become delays. We also respond to periodic global regulation changes by updating our protocols, never making our customers scramble over last-minute paperwork.
The partnership between supplier and user runs deep in the world of chemical manufacturing. Our clients have direct lines to production staff who know the details of Vat Red FBB’s behavior, whether it’s a question about a tricky long run or a sudden outlier in batch strength. Expect honest feedback based on data collected from real plants, not just theoretical specs. When mill staff raise issues, we log the scenario, send a sample to check, and roll any improvements straight into our next lot.
We stand behind every drum from packing to warehouse to the dyehouse floor. Our own employees have worked mixing, testing, and running these lines hundreds of times, and that experience shapes every batch. Practical knowledge—knowing how a powder feels, how it should dissolve, what color it gives after five different afterwashes—comes from actually walking the work floor, measuring results, and listening to the experienced dyehouse crew. This practical touch provides reliability for users expecting performance under pressure, batch after batch.
We watch fabric and garment trends shift with every passing season and adjust our lab work accordingly. Feedback from the market pushes us to refine particle size control, purity levels, and guidance for emerging dyeing processes. In the past five years, adoption of newer, faster machines meant many clients needed tweaks to their recipes and handling steps. Every time a client brings a question or a complaint, our technicians test it in our own pilot lab, then respond with a new, field-tested process adjustment.
For new clients entering vat dyeing, we set aside time to explain the process in detail — from reduction tips to bath monitoring and final shade assessment. We show dyers how to check for common issues, like ring marks, floating scum, or sudden pH shifts, and how to prevent them before they affect output. For old hands, we remain ready as technical backup, fine-tuning doses to squeeze every bit of value out of each drum.
The result is real-world improvement, measured not just in shade accuracy, but in the reduced number of off-shade lots, fewer re-dyes, and less waste water sent to the treatment plant. We keep sustainability and operational safety front and center, responding quickly to every change in regulation or client specification.
Chemicals that stand the test of time come from a mix of smart process choices, hands-on knowhow, and honest relationships with end users. We built Vat Red FBB for long-term use in the world’s tough textile markets and stand behind every lot that leaves our plant. From raw powder to final runoff, every step reflects a hard-won lesson about what works and what does not. This is not a speculative product; it’s the outcome of years at the side of actual mills, focused on consistency, safety, and clear color in any textile segment. For those looking for a red pigment they can trust, with proof from both real results and solid testing, Vat Red FBB proves its value with every new season.