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HS Code |
648232 |
| Cas Number | 6231-07-0 |
| Molecular Formula | C26H22N4O |
| Molecular Weight | 406.48 g/mol |
| Color Index Name | Disperse Red 13 |
| Appearance | Red powder |
| Melting Point | 180-183°C |
| Solubility In Water | Insoluble |
| Dye Class | Disperse Dye |
| Lightfastness | Moderate |
| Applications | Polyester fiber dyeing |
| Synonyms | Rubine B, C.I. Disperse Red 13, Dispersol Red B |
| Ec Number | 228-319-2 |
As an accredited Rubine B Disperse Red 13 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging for Rubine B Disperse Red 13 is a 25 kg blue fiber drum with an inner polyethylene liner for safe storage. |
| Shipping | Rubine B Disperse Red 13 is shipped in tightly sealed, labeled containers to prevent moisture and contamination. It should be handled as a non-hazardous dye, avoiding direct contact and inhalation. Transport in compliance with local and international chemical regulations, keeping away from oxidizing agents, heat, and open flames. |
| Storage | Rubine B Disperse Red 13 should be stored in a tightly closed container in a cool, dry, and well-ventilated area away from heat, moisture, and incompatible materials. Avoid direct sunlight and sources of ignition. Handle with appropriate personal protective equipment to prevent dust formation. Ensure proper labeling, and keep out of reach of unauthorized personnel. Follow all local and national regulations for chemical storage. |
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Purity 98%: Rubine B Disperse Red 13 with purity 98% is used in polyester fiber dyeing, where it ensures consistent and vivid color development. Particle Size 2 μm: Rubine B Disperse Red 13 with particle size 2 μm is used in textile printing, where it provides fine pattern resolution and smooth fabric coverage. Melting Point 180°C: Rubine B Disperse Red 13 with melting point 180°C is used in thermoplastic coloration, where it offers excellent thermal stability during processing. Lightfastness Grade 5: Rubine B Disperse Red 13 with lightfastness grade 5 is used in automotive upholstery coloring, where it ensures prolonged resistance to fading under sunlight. Dispersibility High: Rubine B Disperse Red 13 with high dispersibility is used in aqueous ink formulations, where it results in uniform pigment distribution and minimizes agglomeration. Solubility in Water Low: Rubine B Disperse Red 13 with low solubility in water is used in sublimation printing inks, where it prevents bleeding and retains sharp image edges. Stability Temperature up to 220°C: Rubine B Disperse Red 13 with stability temperature up to 220°C is used in high-temperature dyeing processes, where it maintains structural integrity and shade consistency. Molecular Weight 340 g/mol: Rubine B Disperse Red 13 with molecular weight 340 g/mol is used in spin dyeing applications, where it enables optimal migration and deep fiber penetration. |
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Manufacturing a dye like Rubine B Disperse Red 13 isn’t a casual decision on the factory floor. Day after day, our teams face the kind of technical challenges that the glossy brochures brush aside. Customers might just see a bright red granule at the end of the process, but in the production bay, every batch depends on tightly controlled conditions, from choice of raw materials to the fine tuning of particle size. We’ve worked through enough filter troubles and reaction foaming to know—getting a consistent Rubine B Disperse Red 13 output isn’t just about running old recipes. Consistency takes real process knowledge, vigilant operators, and steady oversight.
Our own line of Rubine B Disperse Red 13, sometimes referenced by its C.I. number 62015, comes out of high-pressure reactors where temperature swings are kept in a narrow window. These controls matter. Drop even a few degrees off target and the product loses color strength or throws off the shade enough to cause rework. Not every operation has the patience or technical backup to deal with this level of detail.
Some see chemical dyes as simple colorants, but most textile plants will tell a different story. The specifications on Disperse Red 13 aren’t just marketing copy. Textile finishers have spent real time, labor, and money verifying whose supply gives the same vivid Rubine tone, batch after batch. This is partly because certain application processes—especially piece dyeing on polyester or microfiber—won’t forgive variability in shade depth or migration. The colorists working downstream demand real matching ability. Our lab takes responsibility here, aligning our Rubine B product to match previously supplied standards so the brands—and their customers—don’t have costly surprises.
Unlike large-volume commodities, Rubine B Disperse Red 13 is more specialized and faces extra scrutiny during audits from quality control teams. Our synthesis starts with carefully selected aniline precursors and specialized coupling agents. Small changes in source material purity flow through the whole process, often showing up as filter clogging or shade drift on drying. Our team learned this the hard way during a change in upstream suppliers a few years ago, losing time troubleshooting what looked like a filtration issue but was traced back to off-spec starting materials.
We don't confine ourselves to textbook procedures. Over years of operation, subtle improvements—the kind overlooked by short-term traders—directly impact the consistency and dyeing behavior of our product. The granulation point is one. Running a “dusty” batch that spreads pigment into the air is unsafe and wasteful. We’ve equipped our finishing rooms with equipment that brings our average particle below two microns, cutting down on hazardous airborne particles. This is not a detail every manufacturer shares, but those who handle or use the dye notice the difference quickly in plant conditions and finished goods.
Compliance with global quality and environmental standards forces us to push further, not just for paperwork but because non-compliant dye turns up in high-profile recalls. Facilities in certain regions struggle to filter out salt byproducts or heavy metals that some regulations limit. We upgraded our processes for closed-loop water handling and side-stream purification to keep contaminants out of the final dye cake—a difficult investment, but the alternative is losing access to major textile markets.
For textile customers, Rubine B Disperse Red 13 is primarily chosen for the powerful pinkish-red shade it gives polyester. The chemistry behind this is rooted in its molecular structure: a high migration ability under alkaline and high-temperature conditions, strong affinity for synthetic fibers, and consistent performance at exhaust dyeing and thermosol processes. It’s not a generic red. It plays roles in sportswear, swimwear, automotive interiors, and flag manufacturing, where resistance to washing, chlorine, and light may determine which dye goes into the mix.
The industry often describes this dye by its application methods. The properties of our Rubine B Disperse Red 13 make it a first-choice solution for high-temperature dyeing (about 130°C) on polyester and blended fibers. Polyester remains tough to dye with many traditional pigments, but Rubine B’s molecular mobility enables deep penetration. When polyester microfibers hit the mass market, adjustment in dispersant type made all the difference—something we learned as newer production lines struggled to control particle aggregation.
Our technical team keeps a close eye on the product strength, shade, and dispersibility index in each batch. What matters to our customers is more than a dry assay figure. By focusing on filtration residue, water solubility, pH, and dispersion stability under stress tests, we can be confident that our Red 13 won’t settle out, streak, or leave behind undissolved particles during critical runs. Quality checks are backed up by spectrophotometric shade matching, real-world sample dyeing, and accelerated lightfastness tests. Results from accredited labs confirm that our batches stay within a ΔE of 1.0 compared to international standards—if a lot falls outside, it doesn’t ship.
After years of working with both international customers and local partners, we get enough comparative feedback to sort out rumors from reality. Many buyers find the world of disperse dyes crowded with similar shade names and codes. Yet, not every dye called Rubine B matches Disperse Red 13’s profile. We’ve seen competitors attempt substitutions, either due to raw material shortages or cost-cutting, but replacement products frequently lag on washing fastness, shade brightness, or stability during polyester blending.
Some producers cut corners by using outdated grinding or granulation equipment, pulling off a “close enough” product visually, but texture and performance show the difference in the dyehouse. Dust generation, sludging in application tanks, or unstable dispersion in hot bath conditions often expose a lack of rigorous production controls. Production veterans spot the warning signs fast: excessive foam in the bath, color shifting during reduction clearing, off-odors, or filter clogging. These issues lead to rework, customer complaints, and, sometimes, scrapped batches.
Our Rubine B Disperse Red 13 runs clean, meaning little waste, smoother filtration, and reliable exhaustion onto polyester and its blends. By using proprietary dispersing agents and further refining our crystal size control, we limit aggregation so our dye maintains storage stability—a point our regular customers appreciate, especially those running continuous dyeing lines that can’t afford downtime. Fewer off-shade lots mean fewer claims, happier end-users, and increased repeat business for our partners.
Rubine B Disperse Red 13 shows its strongest results on polyester, but its application flexibility extends to some acetate and nylon blends as well. Modern textile manufacturers want dyes that can move between exhaust dyeing, padding, and even high-speed printing with the same predictable outcome. Over the last decade, we’ve tested Rubine B against new fiber types, machine cycles, and blended yarns, breaking the cycles of trial and error by supporting customers’ process development with direct sample matching and on-site advice.
For garment manufacturers, this comes down to clear advantages. Rubine B gives above-average brightness, high fastness against household laundering, and passes most sweat and light resistance tests required by international brands. It doesn’t go dull during polyester heat setting. Finished goods dyed with our product stay true after multiple cycles—important for sportswear and uniforms that take repeated washing.
In the dyehouse, operator experience counts for a lot. Handling our Rubine B means less dust and fewer breathing concerns. We’ve dialed in a granule cut that pours easily but resists cake formation. It dissolves quickly in water, letting technical teams focus on production targets and less on cleaning undissolved residues from pumps or filters. In direct printing, the balance between color intensity and paste stability represents hours of formulation work. We’ve run real-world head-to-heads with comparative reds, and Rubine B has avoided the common pitfalls: clogging, uneven prints, and unexpected shade variations.
Chemical manufacturing has always run on trust, but today’s industry puts extra weight on documentation and repeatable results. Every batch of Rubine B Disperse Red 13 carries not only a batch number for internal tracking but a chain of custody from raw material entry to final packing. Some years back, a batchwise deviation in a European customer’s process sent us running checks through the entire supply system. The cause? An upstream change in a solvent specification at a third-party supplier. Only by keeping logs and reference samples could we sort it out—helping the customer avoid repeated downtime and cost.
With more brands asking for eco-compliant production, our traceability encompasses effluent handling, worker safety, and regulatory compliance. Recent market changes push for limited azo content, no heavy metals, and tight controls on formaldehyde. Our facility audits benefit us as much as customers, ensuring long-term access to global and local markets. Experience shows that failing these checks doesn’t just mean fines or penalties—it shuts the door on lucrative export contracts.
Working as a manufacturer in disperse dyes means collaboration up and down the chain. We don’t see our job as complete once Rubine B leaves our warehouse. Customers count on application support, documentation, and on-the-ground troubleshooting. Sometimes, that means rolling up our sleeves alongside their plant chemist, tuning formulation conditions or adjusting auxiliary chemicals for optimized running on the newest fiber or process.
Our technical consultants invest time translating lab experience into shop-floor action. We run test dyeings using mill water samples or real fabrics from the customer’s own production. Operations that want to move toward leaner processes, reduced water usage, or higher right-first-time outputs lean on this interaction. Running regular feedback cycles with large factories, we pick up reports—both positive and challenging—to keep improving Rubine B.
Open communication eliminates surprises. If we see customer claims about unexpected shade or exhaustion, we pull retains, test under reported conditions, and close the knowledge gap together. Partnership flourishes on honest dialogue, not marketing spin. We’ve learned that acknowledging a rare miss builds more loyalty than hiding behind procedures. This attitude matches the needs of brands and dyehouses under continuous market pressure.
Demand for high-performance, sustainable disperse dyes like Rubine B Disperse Red 13 keeps rising. Customers from sectors as diverse as automotive, sports apparel, and technical textiles expect excellent performance, reduced environmental footprint, and full records—not simply a color match. We face these challenges by pushing for cleaner, safer, and more reliable production, even as raw material markets swing and environmental rules tighten.
One ongoing challenge involves sourcing certified raw materials that balance cost and regulatory acceptability. The international supply chain surprises us from year to year with new rules on origin, content, and allowable trace contaminants. Our procurement team works closely with trusted suppliers, runs incoming raw analysis, and qualifies material by test, not by assumption. The lesson learned: pay attention at the front end to avoid failures at the finish.
Inside the factory, we continue to upgrade equipment and control systems. Automation won’t replace skilled hands, but it helps us react faster and safer to changes in critical parameters. Monitoring pH, redox potential, and particle size in real time lets us adjust without waiting for lab confirmation. Good data gives us early warnings and opportunities for process refinement. We welcome technology’s help but value operator experience at every step.
For our part, we focus on bringing reliable, high-quality Rubine B Disperse Red 13 to the market. Our customers benefit from batch-to-batch consistency, practical technical support, and a commitment to environmental and regulatory compliance. The dye industry evolves with every innovation in textile fibers and dyeing equipment. We’ll keep investing the resources, listening to feedback, and sharing what we know—because Rubine B’s real story is made every day in more than just documents or certificates, but in how well every finished textile meets the world’s changing expectations.