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HS Code |
442812 |
| Product Name | Direct Fast Yellow 4GL |
| Chemical Class | Azo dye |
| Color Index Number | 29025 |
| Color Shade | Yellow |
| Appearance | Yellow powder |
| Solubility In Water | Soluble |
| Molecular Formula | C29H20N4Na2O8S2 |
| Molecular Weight | 678.60 g/mol |
| Cas Number | 6786-83-0 |
| Ph Value | 6-8 (1% solution) |
| Main Application | Textile dyeing |
| Light Fastness | Moderate |
| Bulk Density | Approx. 0.8 g/cm3 |
| Storage Conditions | Keep in cool, dry, well-ventilated place |
As an accredited Direct Fast Yellow 4GL factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging for Direct Fast Yellow 4GL is a sturdy 25-kilogram woven bag, featuring clear labeling, hazard symbols, and product information. |
| Shipping | **Shipping Description for Direct Fast Yellow 4GL:** Direct Fast Yellow 4GL is shipped in tightly sealed, high-density polyethylene (HDPE) drums or bags, protected from moisture and sunlight. It should be stored in a cool, dry, well-ventilated area, and handled using appropriate personal protective equipment. Avoid contact with incompatible substances and ensure compliance with transport regulations. |
| Storage | Direct Fast Yellow 4GL 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 incompatible substances such as strong oxidizers. Ensure the storage area is equipped with appropriate spill containment and is accessible only to trained personnel. Store away from food and drinking water. |
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Purity 98%: Direct Fast Yellow 4GL with purity 98% is used in cotton fabric dyeing, where it delivers consistent and vibrant yellow coloration. Light Fastness Grade 4: Direct Fast Yellow 4GL with light fastness grade 4 is used in textile printing, where it ensures long-lasting shade under exposure to light. Solubility in Water 50 g/L: Direct Fast Yellow 4GL with solubility in water 50 g/L is used in viscose yarn dyeing, where it enables rapid dissolution and uniform dye uptake. pH Stability 5-9: Direct Fast Yellow 4GL stable at pH 5-9 is used in continuous dyeing processes, where it maintains color integrity across varied pH conditions. Average Particle Size 10 μm: Direct Fast Yellow 4GL with average particle size 10 μm is used in pigment dispersion applications, where it achieves smooth blending and high-quality surface finish. Melting Point 250°C: Direct Fast Yellow 4GL with melting point 250°C is used in high-temperature dyeing of cellulosic fibers, where it retains color stability during thermal treatments. Salt Fastness Grade 4: Direct Fast Yellow 4GL with salt fastness grade 4 is used in the dyeing of blended textiles, where it resists color migration in saline conditions. Moisture Content ≤2%: Direct Fast Yellow 4GL with moisture content ≤2% is used in powder dye formulations, where it prevents clumping and improves shelf life. Shade Index Y4GL: Direct Fast Yellow 4GL with shade index Y4GL is used in batik printing, where it imparts a bright and intense yellow hue favored in traditional designs. Dispersibility Rate 95%: Direct Fast Yellow 4GL with dispersibility rate 95% is used in aqueous ink manufacture, where it provides excellent pigment suspension and print clarity. |
Competitive Direct Fast Yellow 4GL 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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Direct Fast Yellow 4GL has earned a trusted spot in textile and paper dyeing workshops because it brings stable coloring power and solid repeatability, job after job. Working in our plant, we see the real difference between this dye and others in the direct yellow class. The shade stands out for its bright, strong lemon-yellow tone with moderate light fastness. Our process keeps the color consistent from batch to batch. Many manufacturers reach for Direct Fast Yellow 4GL to dye cotton, viscose, and paper pulp because it takes on fiber well, gives clear shade build-up, and holds its tone through routine washing.
Our quality commitment means a close grip on purity and content. We filter every batch and keep a careful watch on critical points like moisture, pH, and insoluble matter. Staff monitor these with practical experience and proven protocols. It’s not unusual for buyers to comment on the clean dissolve and even penetration into textile material compared to grades that often leave residue or uneven patches. This directly impacts the efficiency of bulk dying lines, making the product a steady answer for mills looking for predictable, repeatable results.
In our daily work, we see Direct Fast Yellow 4GL’s performance on cellulose-based fibers. Customers dye cotton yarns and knits, finished fabrics, and high-alpha cellulose papers, where the need for color evenness keeps coming up. End users notice the reliable shade on both batch and continuous dyeing equipment. At mid-alkaline pH, the dye fixes efficiently and the liquor remains clear, which matters for plant maintenance and dye house output. In our own test rooms, Direct Fast Yellow 4GL readily exhausts in hot dye baths, even at high liquor ratios typical in Asian, European, and African working conditions.
When planning jobs with direct dyes, concerns often surface about migration on the fiber or re-dissolving in wash cycles. Direct Fast Yellow 4GL answers these headaches better than many similar lemons, especially on mercerized cotton. It keeps its position during rinsing, keeping color loss low and barely bleeding. Real customers rely on this property because it lowers rework rates and prevents flawed lots. For paper plants, the dye’s particle control prevents fiber flocculation, ensuring the final sheet looks sharp and welcoming.
Running a manufacturing plant gives us a close-up look at how a chemical behaves, not only on the lab bench, but in thousands of real workshop tanks. Direct Fast Yellow 4GL draws steady business because operators find it simple to handle. It mates swiftly with water and doesn’t clump, keeping mixing times short. Totes or bags spill smoothly, and the dust risk stays manageable compared to finer powder direct yellows. It responds well to typical stabilizers and dispersants, so most mills don’t have to change their auxiliaries or project timings.
We talk with hands-on dyers and color specialists every week. They want a dye that cooperates, not one that bounces in unpredictable directions from one trial to the next. Direct Fast Yellow 4GL delivers on this. The shade development responds in a linear way to dosing, which lets shops scale up their batch jobs without wrestling with recalculation headaches. If the fiber changes lot-to-lot, our team shares guidance, drawn from thousands of production hours, to balance liquor levels and temperatures so tonality remains in the target window. Feeders say the granules and concentrates pour at the right speed, avoid lumping, and don’t plug the lines. There is less sediment compared to some imported blends that look fine on spec sheets but bring day-to-day trouble on the shop floor.
In a practical sense, a reliable direct yellow like 4GL frees mill managers and colorists to focus on output rather than firefighting. Anyone in high-volume dyeing knows that a bad charge or unfriendly dye grade can stop an entire line, costing hours and wasting raw materials. Frequent customer feedback shows Direct Fast Yellow 4GL keeps those headaches rare. In the mills we support, batch yields and re-dye rates track better than with some lesser-known brands. Workers stand behind this product because the residues wash out easily, meaning less downtime clearing out mixing tanks or recirculators.
Managers source Direct Fast Yellow 4GL at consistent concentration—dyestuff content above 95 percent—with limited salt and ash build-up. This reduces adjustment needs, since the dose target for a shade stays tight. No producer wants fluctuating strength, which throws off the recipe. With this product, blending and metering match up batch to batch, making budget planning and supply chain work more straightforward. Where service calls do crop up, our technical team works from direct plant data and can point right to root causes, rather than guessing or passing the buck.
From an engineer's perspective, making and using Direct Fast Yellow 4GL brings up some clear differences from other direct yellows. Many customers have worked with direct yellow 12, direct yellow 44, or direct yellow 86, then move over to 4GL after facing dullness or rinse-off problems with the others. In cotton processing, direct yellow 12 often lacks the shade clarity and runs faded after only a few washes. Direct Fast Yellow 4GL fixes better to the cellulose, so garments and fabrics keep their intended look well after production.
We get asked about resistance to acid and hard water salts too. Many direct yellows shift undertone or lose intensity in tap water with too much calcium. Direct Fast Yellow 4GL holds a stable lemon shade, not drifting into green or brown, across variations in incoming water, which relieves a lot of unpredictability seen in some lower-cost brands. This minimizes troubleshooting and shade correcting, saving real money on auxiliaries and additives.
We keep a watch on wastewater and eco-compliance for every new batch passing through our plant. Direct Fast Yellow 4GL answers market demands for less chemical load downstream. During our own effluent monitoring, we’ve found that it decomposes at a predictable rate under industry standard biological treatment. The relatively low salt content and light metal residue fall within routine compliance ranges for permitted dye plants in most textile-based economies. Workers or buyers focused on restricted substance requirements check our supply records and lab tests, all verified and stored for partner audits.
A growing number of partners work towards bluesign® and equivalent eco-labels. Direct Fast Yellow 4GL fits in, as it avoids the more regulated amine breakdown products found with some old-style direct yellows. Color shops planning for certification use this product because new regulatory lists focus on both performance and downstream impact. Adaptation remains a challenge in fast-changing compliance climates, but with the continued move to better water management, dyes that perform well without excessive salt or slow degradation keep gaining ground. Direct Fast Yellow 4GL has stood up to recent importer checks and site audits, keeping our partners free from late shipments and fines.
Working at scale changes the way you see a product. Our daily process—from raw input to packing—values reliability, not just performance under ideal conditions. Quality assurance teams track results and keep feedback loops with sourcing and customer support. We build up decades of batch data, pulling out trends that help plants dial in their mixing and schedule maintenance before problems hit. Direct Fast Yellow 4GL has made our job steadier over the years. Detailed logs show blend consistency and minimal issues in shipping, compared with products that travel badly and arrive with moisture or caking.
This year, as we’ve navigated global shipping headaches and input costs jumping up, steady sellers like Direct Fast Yellow 4GL let us keep prices and batch schedules more predictable. Raw material planners note fewer claims and smoother hand-offs with our batch records. The operators trust the powder not to bridge during automatic feeding, and the finishers notice a consistent brightness they count on for templated product ranges.
Listening to business partners and technicians means we learn where the product stands out and where we still see questions. Some buyers mention that the washing fastness of Direct Fast Yellow 4GL, though a strong point, still falls behind that of reactive dyes. For large-lot ready-wear goods headed for export, they make up for this through over-dyeing or resin finish, which fits their productivity needs.
Customers mention the price-performance ratio. Direct Fast Yellow 4GL rarely gets returned for failing to match a reference swatch or for dusty residue—the top gripes we deal with on new product launches. Some tough jobs still need a blend with reactive yellow, but in basic towel, home textile, or core book paper, the margin, speed, and reliability advantages tip the decision back toward Direct Fast Yellow 4GL.
In factory upgrades and big ship turnarounds, engineers come to us after running into time or temperature trouble with a lesser-known yellow grade. They hear from plant-floor crews who find that 4GL recovers from pH swings without dumping out of solution, a point that scored praise in liquid injection systems. The dye gives a moderate bright shade, so quality inspectors need little time matching output to the master standard.
Providing support isn’t just about sending out COAs or packing lists. With Direct Fast Yellow 4GL, we back up customers with advice on liquor quality, fixing agents, and pH optimization, much of it grounded in what’s worked—and what’s failed—on our own lines. When output targets change or the market asks for a new hand-feel on finished stock, we field test recipes using real incoming water, not just lab-grade specs. In one case, a paper mill ran into streaks due to hardness swings. Our team visited, checked their dosing and pulping method, and helped them shorten batch times by tweaking pH. Their output came up to grade faster, with less offcut.
Mills moving from older salt-heavy direct dyes save on effluent treatment after switching to Direct Fast Yellow 4GL. Fewer adjustments to rinse cycles lead to water savings and smaller chemical bills. Our bulk customers appreciate having warehouse stock that doesn’t degrade during hot or humid seasons. The powder formulation remains free-flowing, resisting the caking that plagues lower grade imports. This brings down the risks of lost value due to spoilage.
Producers face tightening quality and regulatory demands every year. Making Direct Fast Yellow 4GL to spec under these pressures means ongoing investment in filtration, dust management, and packaging upgrades. We’ve installed continuous monitoring tied to pressure and flow rate alerts. This shows up most clearly in the lower dust and high batch confidence scores. By focusing on these upgrades, we keep lead times tight and batch traceability strong.
Global supply chains don’t make exceptions for dye manufacturers. Input volatility, shipping delays, and changing tariffs push risk onto everyone. Experienced hands in our plant scout out alternative sources for key intermediates and keep communications open with logistics and sales so we can flag any interruptions early. This lets us give partners up-to-date forecasts, rather than hiding behind general statements. Working through these cycles, Direct Fast Yellow 4GL has stayed a core item because its track record on the shop floor keeps downtime low, even as upstream challenges roll through the market.
Every textile and paper plant tries to balance cost, product consistency, and regulation. There’s no shortage of competitive dyes or hot new claims, but from a manufacturing perspective, it’s the long-haul performers like Direct Fast Yellow 4GL that win out through the churn. New automation and dosing technologies have made the product even more attractive. Its measured granulation and particle size match up well with automatic feeders and blending equipment, which have taken hold in medium and large dye houses.
As sustainability gains more attention, the fact that Direct Fast Yellow 4GL brings lower chemical load and a stable color holds weight with brand buyers under growing scrutiny. There’s a lot of noise about “green chemistry,” but customers tell us it’s shoes-on-the-ground reliability and solid lab data that keep their lines operating smoothly.
Direct Fast Yellow 4GL isn’t the flashiest dye on the market, but it has carved out its place as a workhorse. Shops trust it, crews know how it behaves, and plant managers rest easier with consistent results and lower downtime. We stand behind every drum, keeping up the standard through raw material control and feedback on the outcome in each partner’s plant. This approach—grounded in evidence, hours on the floor, and practical advice—drives both our own growth and our customers’ success. The road ahead always brings change, but with a product as steady as Direct Fast Yellow 4GL, that’s a challenge worth meeting head-on, one production run at a time.