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HS Code |
173544 |
| Chemical Name | Mordant Brown RH |
| Synonyms | C.I. Mordant Brown 33 |
| Cas Number | 3360-21-0 |
| Molecular Formula | C17H10Cl2N2O6 |
| Molecular Weight | 409.18 g/mol |
| Appearance | Brown powder |
| Solubility In Water | Slightly soluble |
| Application | Textile dye, especially for wool |
| Melting Point | Decomposes before melting |
| Color Index Number | C.I. 44045 |
| Ec Number | 222-154-6 |
| Light Fastness | Good |
As an accredited Mordant Brown RH factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Mordant Brown RH is packaged in a 25 kg net weight fiber drum, lined with a polyethylene bag for moisture protection and safety. |
| Shipping | Mordant Brown RH should be shipped in tightly sealed, properly labeled containers, away from incompatible materials. Transport under dry, cool conditions and comply with local and international regulations for hazardous chemicals. Ensure containers are protected from damage and handled with appropriate personal protective equipment to prevent leaks, spills, and exposure. |
| Storage | Mordant Brown RH should be stored in a cool, dry, well-ventilated area away from heat, moisture, and direct sunlight. Keep the container tightly closed when not in use. Store away from incompatible substances such as oxidizing agents and acids. Ensure proper labeling and avoid excessive dust formation. Use appropriate personal protective equipment when handling and storing the chemical. |
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Purity 98%: Mordant Brown RH with 98% purity is used in textile dyeing applications, where it ensures consistent shade reproducibility. Molecular weight 470 g/mol: Mordant Brown RH at 470 g/mol is used in leather finishing, where it provides deep penetration and uniform coloration. Particle size 10 microns: Mordant Brown RH with 10 micron particle size is used in ink formulations, where it delivers smooth dispersion and improved print quality. Melting point 220°C: Mordant Brown RH with a melting point of 220°C is used in heat-set printing processes, where it maintains color stability at elevated temperatures. Solubility 45 g/L in water: Mordant Brown RH with 45 g/L water solubility is used in aqueous dye baths, where it allows for high dye uptake efficiency. Lightfastness grade 6: Mordant Brown RH with lightfastness grade 6 is used in outdoor fabric production, where it delivers enhanced resistance to color fading. Stability temperature 120°C: Mordant Brown RH with a stability temperature of 120°C is used in high-temperature textile processing, where it preserves chromatic strength under heat. pH stability range 4-8: Mordant Brown RH stable in pH range 4-8 is used in multi-fabric dyeing, where it ensures reliable dye performance across different substrates. |
Competitive Mordant Brown RH prices that fit your budget—flexible terms and customized quotes for every order.
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Heavy yarn runs through our dye house every day. Sometimes it comes in from the spinning unit up the road, sometimes off the truck from another province—it always needs to emerge richer, deeper, more precise in shade. Over the years, Mordant Brown RH has helped us deliver this kind of color. Inside the plant, we have watched this product become a core staple for textile finishers and tannery operators who work with complex recipes and demand high consistency, day in and day out.
This dye didn’t show up on the market last year or as a throwaway from another industry’s byproducts. We selected Mordant Brown RH to manufacture because its performance answered real problems raised by our own line staff—problems that appeared on wool, cotton, silk, polyamide, and sometimes blends the old tools couldn’t fix. With Mordant Brown RH, users have reported improved color depth on cellulosic fibers, clean leveling on large-capacity jiggers, and a notable compatibility with metallic salts, particularly chromium. Our workers have run this dye under variable conditions. The batch handles thermal cycling without bleeding or wild broadening of shade. We see this up close; we see what happens with and without this dye in a formula.
Model and Specifications: Our Experience with Consistency
Our facility produces Mordant Brown RH in powder form, with a molecular structure consistent with sulfonated azo dyes. This powder format allows for easy dispersion into both aqueous solutions and paste preparations. Our operators trust the batch-to-batch repeatability—granule size doesn’t clump in the feed system, and the product enters the dye bath clean, dissolving with minimal residue. Technicians running pilot tests consistently note the mixture clears quickly, without sticking to the vessel wall or requiring extended agitation. This saves both time and costly detergent additives.
The broad dyeing range of Mordant Brown RH extends practical value to fabric printers and leather treaters. The product demonstrates reliable tone on natural fibers, most notably on cotton and viscose. For wool, the color tone remains sharp, even when running blends of Australian and local staple. Our laboratory teams compare sample cards daily, matching test results for half-year-old lots to freshly milled product—precision lands within tight margins, and that’s visible on our control lab’s reflectance readings.
Key Applications: Trusted in Process
Traditional dye houses often come to us with requests for formula advice on batch and continuous setups. Mordant Brown RH supports both, but the product practically proved itself on the yarn package and piece dyeing lines. Our clients appreciate how this dye maintains shade in high-liquor-ratio drums. Where some brown dyes break under alkali or produce dirty backgrounds on cellulose, Mordant Brown RH generates a steady, rich brown that resists streaking, even under variable tension. The color feels rooted. Managers at finishing lines have confirmed dye baths recycle with minimal loss of strength, which keeps wastewater output steady over long runs and helps manage chemical loading costs.
In the garment industry, shade correction accounts for expensive re-processing. Dyers choose Mordant Brown RH to quiet down the unexpected red or yellow casts that pop up after drying or calendering. With precise dosing—something we train customers to calculate by seeing us measure and weigh, not by rote—batch after batch turns out predictable, even results. We do this work on our own floor, and we’ve hosted customers standing right beside our vessel, watching the change. Productivity increases when QA teams spend less time sorting finished rolls for shade deviation.
In the world of leather, especially for sole and upper leather, colorfastness drives purchasing decisions. Here Mordant Brown RH’s compatibility with chrome tannage is a significant point. Technicians in the tanning lofts report that the grain surface displays a classic, full brown without visible spotting or uneven take-up. If you walk along a finishing line, you’ll see workers prefer this dye for both its shade and its ease of washing after fixation—structures rinse out better, surfaces remain uniform, and the fastness grade on rubbing holds near the upper end of the scale provided adequate mordanting. Our technical support teams have received similar feedback from the glove industry and specialty shoemakers who aren’t interested in experimenting with unknowns.
Plenty of brown dyes float around the market. Each claims high build or fastness, yet in controlled runs, few measure up. Take standard iron-mordant browns: they tend to apply heavy sediment and produce erratic undertones if water mineral content shifts or pH drifts during extended operation. In contrast, our production teams have run Mordant Brown RH with tap water, filtered spring sources, and even recycled process water without seeing unpredictable yellowing or greening. The molecular structure has resistive properties against waterborne impurities, and those features back our confidence when we recommend this dye for difficult water chemistry environments.
Direct browns, often marketed as easy alternatives, simply do not survive industrial laundering or repetitive surface contact like Mordant Brown RH. Shrinkage and fading remain serious headaches for finishers and laundries. Our R&D chemists tested samples from twelve international suppliers and nine domestic ones over the years. Mordant Brown RH offered better resistance to color loss on repeated hot soaping and brightening, such as the cycles run in hospitality and uniform programs. That resistance traces back to the interaction with metallic mordants, which anchor the dye molecule to the substrate better than many other standard browns available through traders and re-packagers.
Reactive or sulfur-based browns win on price but come with trade-offs in brightness and ecological management. Some buyers eye their cost structure, but the hidden expenses show up: excess salt discharge, complex wastewater remediation, and increased time spent on shade adjustment. We have processed those classes in our pilot lines. Mordant Brown RH, in comparison, lands in a sweet spot by maintaining a strong color payoff while streamlining some of the most labor-intensive parts of dye bath cleanup. Actual plant managers have doubled down on this product after tracking overtime hours and maintenance logs—they tell us plainly, rework rates and downtime shrink when this colorant runs in routine schedules.
Our production site does not take shortcuts on operator safety controls. Mordant Brown RH’s chemistry avoids the more hazardous metal complexes found in some imported brown dyes, especially those notorious for liberating free chromium or other heavy ions. The powdered product handles with standard industrial PPE, and our unloading teams never see excessive dusting, thanks to the granule integrity designed into our milling process. Tech staff appreciate the simple cleaning protocols post-batch, since residues clear with regular alkaline washdowns—no elaborate acid cleaning required. We have built feedback from our line crew into each iteration of our manufacturing process, so users can learn directly from ground-level insights.
In process waste streams, Mordant Brown RH does not introduce unexpected color or soluble pollutants that throw off COD/BOD limits. Effluent monitoring from our in-house labs and customer partners consistently registers within national standards for dye discharge after proper neutralization and coagulation. Our environmental engineers participate regularly in field sampling and share operational know-how during audits—no company benefits from merely passing a third-party compliance test if its own plant output surprises them down the line. Our operation stands behind these claims with data collected on actual flow rates and dye concentrations, not glossy charts devised by remote marketers.
Dye houses and tanneries need hands-on answers, not roundabout troubleshooting. Our clients—plant supervisors, dye technicians, environmental officers—call us directly. They ask about bath turnover times, minimum solubility temperature, and metallic salt loading ratios. We’ve run these numbers in our own lab as well as during on-site visits. For Mordant Brown RH, feedback revolves around practical wins: stable application even with varying water pressure, fast shade matching on short runs, and less fuss recalibrating dosing pumps.
Our supervisors have seen teams switch from older brown dyes, only to run into problems with bath clarity or patchy results on their first test. After troubleshooting with a simple hot water pre-dissolution or minor adjustment in salt-to-dye ratio, they report improvements across the board. Our engineers are never far from a production floor—because real-world experience teaches faster than theory or marketing ever could. That approach keeps relationships strong and results in lower downtime for everyone involved.
Listening to end users guided our continuous upgrades to Mordant Brown RH. Large-scale uniform manufacturers point to consistent shade on double-width goods as a decisive factor—they cannot afford product rejections from color mismatches. Shoemakers in regional centers have convinced us to tweak lot sizes, favoring delivery convenience and shelf-life without changing performance. Leather finishers from export zones order repeat shipments because finished hides retain richer color after slicing and edge-rolling; detail counts, and so does real performance over shelf talk.
We have run joint pilot programs with partners in the dyeing and finishing sector. In those sessions, operations managers routinely record shorter batch cycle times, lower overall chemical input, and savings both in direct chemical cost and in reduced rejects. Employees who see the difference in finished product find pride in the result and fewer headaches during shift changes. Our job doesn’t revolve around just handing off a product—our crew invests their technical background into making the customer’s equipment, processes, and quality assurance run smoother.
Feedback loops reach from the shop floor to our R&D benches. An uptick in demand for ‘earth-friendly’ colorants brought us into ongoing dialogue with environmental chemists. Adjustments have focused on reformulating dispersants and wetting agents, key for keeping the product usable in lower-emission facilities. We supply samples for field trials before ever suggesting a change—customer acceptance comes from proven wins, not whiteboard projections. This ongoing shared development means Mordant Brown RH remains relevant, not just compliant.
Every chemical operation grapples with raw material volatility, from upstream cost swings to surging regulatory demands. Mordant Brown RH’s core ingredients require dependable suppliers; our procurement team manages this risk by diversifying sources and keeping close relationships with logistics partners who know our schedule matters. This diligence helped avoid delays even during years when other product lines saw shortages. The end user experiences consistent supply—and in our world, nothing takes priority above keeping lines running and orders shipping on time.
We confront another issue: staying ahead of emerging REACH and local regulatory requirements. Over the past decade, environmental frameworks have tightened—partly matching shifts in consumer expectations, partly the outcome of more scientific research on colorant breakdown and impact. Our environmental compliance crew, trained in both core dye chemistry and wastewater engineering, evaluates our finished product against each change, testing not only for banned substances but for persistent aggregates and potential mutagens. Any deviation triggers a reformulation plan, long before a batch ever leaves our yard. It’s not about ticking a compliance box, but safeguarding end users and setting an example for safer color chemistry across the region.
At trade seminars and in direct meetings with procurement officers, we’ve heard the same question: “Why not just pick the cheapest brown dye? Isn’t it all the same on paper?” Those with experience in high-output finishing know small technical differences multiply into bottom-line consequences. Mordant Brown RH stands apart in more than name. The product offers robust fixation, steady batch-to-batch performance, and a shade that holds under the same abuse textiles and leathers suffer in daily use. These qualities result from every head engineer, every QA inspector on our team, and our habit of measuring success not just by samples under a lightbox, but by rolls and hides actually sold, used, and tested in real-world conditions.
We have walked visitors through post-production storage, pointing out that well-milled Mordant Brown RH prevents caking and remains dust-free in sealed bins through seasonal humidity swings. That logistics advantage matters for remote facilities or mills—less waste, fewer delays hunting for clean material, and more value over time. Comparisons with other brown dyes, especially those sourced through spot-trading channels, have shown more breakdown in shade stability, more frequent returns, and more dissatisfied operators. Our model cuts those risks and delivers reliable returns over tens of thousands of kilograms, not just lab-scale samples.
Manufacturing chemical colorants these days involves more than simply mixing and packing. Mordant Brown RH fits into a balanced approach to sustainability—not as an abstract target, but through every stage from sourcing and transport to finished product use. We invest in closed-cycle water systems, and every batch of Mordant Brown RH produced benefits from internal water recycling and reduced steam demand. Our sustainability engineers document energy and resource savings, working side by side with plant teams to incrementally cut down on emissions and waste.
Export customers require robust compliance documentation, and our transparency on Mordant Brown RH’s environmental impact stands up to scrutiny. Ecolabel compliance, safety data, and independent confirmation of fastness properties come as standard with each new partnership. Our technical writers don’t fight to fill out paperwork—they work with chemists who designed the product, so what goes into the file matches reality on the production floor. This direct link between manufacturing and compliance helps partners gain access to regulated markets without dramatic process overhaul.
Mordant Brown RH isn’t a single-solution product, just a dependable workhorse elevated by technical rigor, real-world proof, and honest feedback from industrial users. Our process—from powder blending to shipping and service—remains anchored in the experience of teams who see chemistry as more than a business. The product keeps making a difference because we listen, we test, and we improve alongside everyone who runs color through a bath, a drum, or a finishing line every day.