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HS Code |
903128 |
| Product Name | Direct Blue D-RGL |
| Chemical Class | Direct Dye |
| Appearance | Blue powder or granules |
| Color Index Number | Direct Blue 86 |
| Cas Number | 1330-38-7 |
| Solubility | Soluble in water |
| Molecular Formula | C34H26N6Na4O16S4 |
| Molecular Weight | 1029.91 g/mol |
| Application | Textile dyeing (cotton, viscose) |
| Shade | Bright blue |
| Light Fastness | Good |
| Ionic Nature | Anionic |
| Ph Stability | Stable in neutral to slightly alkaline conditions |
As an accredited Direct Blue D-RGL factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Direct Blue D-RGL is packaged in a 25 kg blue fiber drum with an inner polyethylene liner for safe chemical storage. |
| Shipping | **Shipping for Direct Blue D-RGL:** Direct Blue D-RGL is shipped in tightly sealed, moisture-proof containers to prevent contamination and degradation. It should be stored and transported in a cool, dry environment away from direct sunlight and incompatible substances. Handle with care to avoid spills; adhere to relevant local, national, and international regulations. |
| Storage | Direct Blue D-RGL should be stored in a cool, dry, well-ventilated area, away from direct sunlight and moisture. Keep containers tightly closed and avoid exposure to incompatible materials such as strong oxidizers. Store away from food and drinking water. Ensure labeling is clear and legible, and follow local regulations for chemical storage to maintain safety and prevent contamination. |
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Purity 98%: Direct Blue D-RGL with purity 98% is used in textile dyeing applications, where it delivers high color strength and uniformity in fabric coloration. Particle size 25 μm: Direct Blue D-RGL with a particle size of 25 μm is used in paper coloring, where enhanced dispersion stability and even shade distribution are achieved. Molecular weight 700 g/mol: Direct Blue D-RGL with a molecular weight of 700 g/mol is used in aqueous ink formulations, where it ensures optimal solubility and consistent print quality. Lightfastness Grade 4: Direct Blue D-RGL with lightfastness grade 4 is used in cellulosic fiber dyeing, where it provides improved resistance to fading under light exposure. Stability temperature 120°C: Direct Blue D-RGL with a stability temperature of 120°C is used in high-temperature padding processes, where it maintains color integrity without decomposition. Water solubility 80 g/L: Direct Blue D-RGL with water solubility of 80 g/L is used in liquid dye preparations, where it enables high dye loading and efficient process application. pH compatibility range 6–9: Direct Blue D-RGL with pH compatibility range 6–9 is used in industrial laundry processes, where stable dye performance across varying wash conditions is ensured. |
Competitive Direct Blue D-RGL prices that fit your budget—flexible terms and customized quotes for every order.
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Tel: +8615365186327
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Direct Blue D-RGL holds a consistent place in the textile industry, not as a fleeting trend, but for practical reasons that stick with you after using it on the factory floor. People working in dyehouses and fabric finishing plants know it by name and rely on it during daily operations. In our own production lines, we see this dye in action on a scale that rarely gets talked about outside our circles. Unlike the mystery that sometimes surrounds specialty chemicals, Direct Blue D-RGL has made its reputation through years of hands-on results and straightforward performance.
The product itself arrives as a strong, powdery substance with a deep violet-blue hue before dissolution. It sits heavy in the bags we fill at the end of the grinding phase. The chemical structure lets it attach directly to cellulose fibers without a complicated fixative process, which serves daily production with less hassle. Customers and in-house testers look for its keen solubility in water, fast color uptake, and a blue shading that holds its own, even after repeated washes. On many lines, textile workers pour it into vats for a clear reason—it spreads and penetrates consistently without the patchiness or muddiness seen in some rivals.
From our plant, Direct Blue D-RGL moves quickly because many apparel makers and denim processors want that distinct, lively blue on their fabrics. Printing houses often select it for its reliability on viscose and cotton. We find the model D-RGL meets these expectations head-on with a balance between color strength and operational safety standards. There’s no confusion here: people who’ve worked with different dyes appreciate how this one rinses out with a minimum of residue. That means operators spend less time scrubbing machines or reworking batches due to uneven coloration.
Our production teams work with large, swirling dye baths where uniform color development is the name of the game. Direct Blue D-RGL doesn’t demand a labyrinth of process adjustments. Whether your setup uses continuous or batch dyeing, the outcome looks similar—a level, fast blue that stays visible after long cycles of boiling and soaping. The model we manufacture suits a wide temperature range, responding predictably from moderate heating right up to the more energetic desizing processes. This saves both money and temperament—a dyeworker never likes to lose a batch to unpredictable temperature fragility.
One sticking point in the dyeing trade is reproducibility—can a customer match last month’s order, today, with no drama? With D-RGL, our experience lines up with customer feedback: the batch after the tenth batch still delivers consistent tone, regardless of whether the job is a few kilograms or hundreds at a time. Knowing what to expect fosters trust on both sides.
Big textile plants sometimes ask us about the impact on their effluent systems. We’ve tracked the rinse characteristics and found D-RGL shows manageable discharge behavior compared to some older direct blues, resulting in easier wastewater treatment. Lower levels of unbound colorant leave less mess downstream, and that cuts down headaches for dyehouse engineers and environmental managers alike.
Some people who’ve only handled a few dyes might think all direct blues perform much alike. What our crews see—sometimes the hard way—is how small differences between products play out in conveyors, paddles, and mesh screens. Cheaper grades sometimes cause more foaming or get sticky, which means operators have to pause production to clean up jams. We designed our D-RGL batch drying and grinding so that there’s no caking or clumping, even after long storage or in humid warehouses. That translates to smoother handling from shipping right down to the labeling room.
Direct Blue D-RGL stands out for its compatibility with a range of auxiliaries and finishing agents. That doesn’t come by accident. It’s the result of a lot of pilot trials and small adjustments—a tweak to the particle size here, a time extension on the spray-drying step there. Dyeing aces want something that doesn’t push back against the other ingredients in their toolkit, so we focus on preserving stability across many formulas. Over the past few years, more processors have combined D-RGL with fluorescent whitening agents, trying for a distinctive look on cotton poplin. Feedback flows back to our lab, and we look for any shift, however small. No one’s interested in flashy marketing words—performance is the conversation.
On the testing side, our teams run the standard stain and wash resistance panels that brands now demand for all imported goods. On these tests, D-RGL hits the margin needed to meet export regulations without needing heavy metal salt after-treatments. That lowers exposure risks for both workers and the end consumer, and reduces the chemical load in rinse water. Production people notice these practical differences more than any marketing claim.
Textile dyeing eats up most of the D-RGL we make, though we also field requests from niche areas like specialty inks and paper coloring. In paper mills, technical managers have posted better color penetration with this model versus older blends. When surface treatment or resistance against fading under overhead lights comes into play, D-RGL proves its value compared to many competitors. Our batches follow tightly set iron and copper contaminant limits, since these can cause headaches in paper and ink formulation. Ink makers depend on a product that resists grinding out during high-speed mixing. After years of supplying directly to large offset printers, we learned that small differences in solubility make the difference between a satisfied customer and a midnight crisis call.
We don’t ignore ancillary uses. Leather finishers pick up small bags on a steady schedule. Their demands mirror those of textile operators: easy dispersibility and visible color payoff in one quick pass, without complex aftertreatments. In tannery trials, D-RGL adheres fast and didn’t require multiple recoats often seen with older direct dyes.
Rough running can follow when a chemical surprises you with hidden hazards. Companies expect suppliers to keep up with global safety standards, not just box-ticking. In our plant, we monitor every step for dusting and accidental spills. Operators report that D-RGL’s granulation gives off less nuisance dust than some older direct blue models, which adds peace of mind in busy plants. On the waste side, water streams from our mixing tanks now test cleaner for residual color than in the past. Few people outside a plant realize how long a stubborn blue stain can linger in pipes and tanks. With Direct Blue D-RGL, cleanup drops off quicker, so turnaround on new colors gets easier.
End users have asked for more details on any regulated impurities. We partner with accredited labs and run regular panels for banned amines and heavy metals. Our output stays below REACH and local Chinese regulations, a point we prioritize because it matters for border clearances and long-term brand partnerships. These are not empty claims—they cost time and money to prove, batch after batch.
People might not think about the work that keeps the quality of this dye steady. Even minor glitches in filtration or spray-drying show up as batch-to-batch color swing or inconsistent solubility. We use multi-stage filtration and controlled drying temperatures. Our QC teams pull samples from every lot at multiple steps and run both in-plant and external lab checks. Process consistency gets attention from top management down to the line workers who shovel and scrape the end product into bins for packaging. On busy days, you see the whole system flex under bigger runs, and that’s when weaknesses show. Years of troubleshooting have shaped our factory routines and given the people here a sixth sense for what "normal" looks like on a good day.
The shift toward greener chemistry has changed our operations. Not so many years ago, solvent-based processes clouded the air in many dye plants, and more of the dye washed straight into sewers. With market and regulatory pressure, we’ve worked on capturing and treating process water, optimizing water recycling loops, and lowering free salt and auxiliary content. Less sodium chloride in the process not only helps the rivers but also pleases processors fighting scale in their pipes. Customers in tighter compliance markets value these adjustments, and tighter rules mean these improvements aren’t optional for us.
For those who look at numbers, the cubic meter yield per kilogram means something. Our process, after years of trial and sweat, gives D-RGL solid gram-per-liter efficiency while minimizing leftover sludge. In places with high-volume orders, every percentile of uptake matters and can be checked directly by measuring spent bath color. A lot of older direct dyes streak on warp yarns under aggressive agitation. Mill managers we've worked with point out that D-RGL hangs on through tough runs without running or sloughing off, so the rework section shrinks on a busy production day.
Customers have shared results from both classic jigger machines and modern, automated rotary dye lines. D-RGL’s flow characteristics feed evenly through metering pumps without clogging, so there’s less labor spent fighting blockages or ghosting patterns. We see far fewer complaints about frothing or surface buildup compared to some direct blue substitutes.
Stability under different water sources is not just a sidebar for us. Unlike other offerings that depend on soft or specifically treated water for top results, D-RGL resists precipitation and flocculation even in areas where water hardness runs high. This holds true on both well-water and recycled input streams. In circumstances where process water changes batch-to-batch, the dye’s output loses little to none of its color depth or clarity.
We often get calls from plant managers looking to switch away from unstable batches or imported lots with long lead times. We challenge every batch of Direct Blue D-RGL we make with real-world checks—heat, pressure, accidental water variation. If anything slips the standard, we pull it and address the cause. Textile producers have sent operators to our plant before to watch the blending and packaging process, and they’ve walked out with a better sense of how tightly we run the line. Those relationships matter in this industry—the handshake and mutual respect count for more than any printed guarantee.
Some customers require extended certificates or validation for key account auditing. We’ve adapted to packing documents and test results with every batch. This builds layers of trust: operators see results, managers see transparency. We know firsthand that people don’t want to chase down explanations when something goes sideways. We maintain an "open door" stance—questions from dyehouse managers come straight back to the technical staff here, not a third-party office.
Direct Blue D-RGL’s relevance will last while the textile sector values immediate, vivid blue results on plant floors. We hear more producers demand performance under increasing legal scrutiny, and consumers now ask about lifecycle impact and worker safety. To stay relevant, we follow up with process upgrades and outside audits, because no one in this line of business can afford a weak link between QC and final delivery.
From experience, pursuing stability, color depth, and responsible production forms the real backbone of a successful dye product. Each trial and user report helps us close the loop on issues, guiding how we refine each batch for real-world results. Direct Blue D-RGL represents not just a formula but a record of adaptation and honest feedback between our teams and end users.
Those who use it don’t need to labor over why it works—they see the results each shift. On our end, the process remains hands-on, practical, and honest. Factories using Direct Blue D-RGL keep coming back, not because of a promise, but because it delivers on every count that matters on the ground.