|
HS Code |
157032 |
| Cas Number | 101714-16-1 |
| Molecular Formula | C18H14N6O6S2Na2 |
| Molecular Weight | 552.46 g/mol |
| Iupac Name | Disodium 6-[(4-amino-3-nitrophenyl)azo]-5-hydroxy-2-naphthalenesulfonate |
| Appearance | Brown powder |
| Solubility In Water | Soluble |
| Color Index Number | Acid Brown 87 (C.I. 20400) |
| Ph Value | Approx. 6-8 (1% solution) |
| Usage | Textile dyeing (wool, silk, polyamide) |
| Melting Point | Decomposes |
| Synonyms | C.I. Acid Brown 87, Acid Brown GSL |
| Lightfastness | Moderate |
| Chemical Class | Azo dye |
As an accredited Acid Brown 87 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Acid Brown 87 is typically packaged in 25 kg fiber drums lined with plastic bags, labeled with product details and safety instructions. |
| Shipping | **Acid Brown 87** should be shipped in tightly sealed, clearly labeled containers, protected from moisture and incompatible substances. Transport in compliance with local, national, and international regulations for hazardous chemicals. Packaging must prevent leakage or spillage; store in a cool, dry, well-ventilated area away from strong oxidizers and direct sunlight. |
| Storage | **Storage Description for Acid Brown 87:** Store Acid Brown 87 in a tightly closed container, in a cool, dry, and well-ventilated area away from direct sunlight and incompatible materials such as strong oxidizers. Keep away from moisture and sources of ignition. Clearly label the storage containers and ensure the storage area is secure to prevent unauthorized access. Follow local regulations and safety guidelines. |
|
Purity 98%: Acid Brown 87 with 98% purity is used in textile dyeing processes, where it ensures high color uniformity and reduced batch rejections. Molecular weight 616.47 g/mol: Acid Brown 87 with a molecular weight of 616.47 g/mol is utilized in leather tanning applications, where it provides deep and consistent penetration for durable coloration. Stability temperature 120°C: Acid Brown 87 with a stability temperature of 120°C is used in nylon fiber dyeing, where it maintains colorfastness under elevated processing conditions. Particle size D50 5 μm: Acid Brown 87 with a particle size D50 of 5 μm is applied in water-based ink formulations, where it enables smooth dispersion and improved print definition. Solubility 45 g/L at 25°C: Acid Brown 87 with a solubility of 45 g/L at 25°C is used in paper tinting, where it delivers rapid dissolution and homogeneous hue distribution. Viscosity 12 mPa·s: Acid Brown 87 with a viscosity of 12 mPa·s is incorporated into wool dye solutions, where it offers controlled application and reduces runoff losses. Melting point 210°C: Acid Brown 87 with a melting point of 210°C is implemented in synthetic fiber coloring processes, where it provides thermal stability and prevents dye sublimation. Lightfastness grade 5: Acid Brown 87 with lightfastness grade 5 is used in automotive upholstery fabrics, where it ensures long-lasting color retention under prolonged light exposure. |
Competitive Acid Brown 87 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.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
In the world of dye manufacturing, Acid Brown 87 does not easily get lost among other brown acid dyes. From daily production batches to long-term commercial contracts, it proves itself through repeatable performance, reliable consistency, and compatibility with a broad range of fibers and materials. Our plant has focused on producing this dye for years, optimizing each phase — from raw material selection, reaction parameters, filtration, and drying — to meet the evolving needs of textile manufacturers around the world.
We know that any interruption, deviation, or inconsistency in color output can derail entire product lines. Acid Brown 87, by virtue of its molecular structure and tight quality specification, demonstrates strong reproducibility batch after batch. Our operators continuously check the dyeing strength and solubility of every lot, monitoring parameters such as particle size distribution and filterability to keep the product aligned with industry usage scenarios. Even small shifts in these factors can show up on factory cloth runs, so we leave nothing to chance.
Our standard offering for Acid Brown 87 comes in several granule and powder forms, refined and dried according to specific textile process requirements. Each batch achieves high purity as measured by UV-Vis spectrometry and wet chemical methods, with excess inorganic salts filtered out to minimize interference during dyeing. We maintain a strict upper threshold for insoluble matter, so customers report less downtime caused by clogged application machinery.
After each production cycle, technicians run trials on true-to-process fabric swatches — typically nylon, wool, and blended cellulosics that reflect typical mill practice. This approach confirms that the dye achieves its characteristic warm brown shade, while also revealing any tendency toward undertone shift or inconsistent exhaustion. Over the years, feedback from large dye houses and independent lab evaluations has allowed us to fine-tune our product, cutting down on shade variability and unwanted byproducts.
Acid Brown 87’s chemical stability supports high-temperature dyeing environments — an advantage when steaming pieces or running continuous jets. It stands up to rapid pH swings often encountered in complex production schedules. In our daily plant reality, fast reaction to shifting raw material batches means recalculating blend ratios and monitoring filtration performance. Years of minor process tweaks have resulted in a product better suited to automatic dosing systems and large-scale dyeing kettles, reducing operator intervention and overall maintenance time.
Acid Brown 87 goes to work in dyehouses where nylon and wool — two mainstays of sportswear, uniforms, carpets, and upholstery — make up the bulk of the material load. Consistent brown shades are vital when deadlines are tight or when small lot shade variation threatens downstream QA. Unlike some older brown dyes, Acid Brown 87 dissolves rapidly in process water and provides immediate color development on the fiber, allowing mill operators to shorten cycle times and optimize throughput.
Our own customers demand adaptability. In direct-to-fabric jet and beck dyeing, Acid Brown 87 clarifies quickly, limiting the risk of unlevel dyeings in rapid fill machines. In resist or “tie and dye” effects popular with fashion textiles, it holds shade well even under aggressive washing or after high-pressure steams. This behavior stems from careful sulphonation in the manufacturing step — and numerous customers report reusing dye liquors with less loss of color yield compared with older brown acid dyes.
Beyond textiles, specialty users in ink and leather sectors have adopted Acid Brown 87 where they need warmth without muddiness, and strength at relatively low dosages. Even though textile demand dwarfs these niche applications in volume, each sector comes back for dependable dispersibility and color repeatability. That reliability helps processors maintain product quality without costly re-runs.
Brown dyes, especially acid browns, aren’t interchangeable without consequence. Acid Brown 87 holds its shade and depth at lower concentrations compared to older products like Acid Brown 14 or Acid Brown 75, which require heavier dosing and deliver muddier undertones. This greater efficiency means customers can save on inventory and logistics by reducing the number of standard colors they keep in stock. We often work directly with process engineers at customer mills to adjust their formulations, aiming for the same finished result with less total input.
Some brown dyes show excessive migration, especially during leveling, and wind up uneven on complex articles such as textured nylon or wool blends with high twist. Acid Brown 87, developed over hundreds of iterations on our line, behaves more predictably with modern process auxiliaries and leveling agents. Dozens of customer validations show tighter color matches between lab swatches and full production runs — an issue that’s troubled the industry for years.
A lot of users who have switched from other acid browns remark on the cleaner filtration at both their dye house and effluent treatment plant stages. Our production approach achieves this through staged filtration and continuous monitoring rather than single-end-point checks, reducing the likelihood that unfiltered particulates slip through to wastewater. Cleaner input means smoother, more reliable output — both for dyed bulk and for plant discharge permits.
Fading and fastness always generate concern, especially as customers turn to certifications and sustainable labeling. Compared to some legacy browns, Acid Brown 87 shows improved fastness on wear, washing, and exposure to mild acids and oxidants — another nod to the carefully selected raw components and precise reaction control in our facility. While no acid brown offers universal fastness, tight process control remains the best route to continual improvement, so we keep each feedback loop with customers short and actionable.
Modern dye manufacturing cannot ignore environmental benchmarks. Over the years, extensive changes to our Acid Brown 87 process reduced the sodium and heavy metal content, tightening incoming water quality requirements and investing in better effluent treatment. Tests on treated plant effluent routinely meet, or in many locations exceed, governmental aquatic life criteria. This isn’t just about regulatory box-ticking — lightweight effluent loads make life easier for our downstream industrial partners.
Efforts to drive sustainability into Acid Brown 87 have also shifted our packaging — from solvent-treated bags to low-dust, recyclable fiber drums and lined sacks. These upgrades reduce fugitive dust during bulk handling and cut down on packaging landfill volume, thanks to customer-driven demand for less waste footprint within the industry's supply chain. While it sometimes takes several rounds of design feedback and in-plant stress testing to land on new packaging formats, we see a real appetite among customers to push for less polluting options.
In-house, we continually track energy and water inputs for each batch of Acid Brown 87. Upgrades to automated filtration units, a closed-loop water recycling line, and pressure-driven reactors have trimmed our resource use by double-digit percentages over the last five years. These improvements pay direct dividends in per-ton cost reductions — but equally important, they address the rising market pressure for quantifiable progress on sustainability. Members of our production teams routinely tour customer plants and share process innovations, transferring knowledge learned on our manufacturing floor out into the field.
Direct collaboration with textile finishers, converters, and research labs has shaped the way we manufacture and support Acid Brown 87. While we routinely supply standard lots for regular runs, our technical team often works on custom blends and “problem shade” matching when unusual substrates, fastener requirements, or outlier water chemistries arise. Real success in this field comes not just from what leaves our plant gate, but how it performs for customers once in production. Our experience has shown that strong relationships and rapid feedback channels make for better dye behavior and fewer surprises on industrial lines.
We've invested in an application lab which mirrors commercial dyeing equipment, running both atmospheric and high-pressure protocols. This approach lets us validate customer-specific inquiries, testing things like liquor ratios, wet pickup, or compatibility with enzymatic finishing steps. The results often shape the minor tweaks in our production recipes — just one reason that Acid Brown 87 performs more dependably in broad deployment. Over the last decade, collaborative troubleshooting with finishers led us to adjust particle distribution and lower foam tendencies, which previous generation acid browns never addressed.
Feedback from technical managers at large converters points to another benefit: simpler, more predictable shade adjustment in the dye kitchen. Acid Brown 87 offers more linear build-up on a concentration curve, making it easier to match shades through minor dosing changes without sending a run back for rework. These “small wins” in process repeatability stack up across large-scale operations, driving down costs and upholding brand commitment to color fidelity.
Trends in finished goods colorways change each season, and customers expect flexibility. Our longstanding investment in Acid Brown 87’s development gives us an edge, supporting both classic brown shades for uniforms and fresh touches for trend-driven outerwear. Because Acid Brown 87 covers a wider concentration window than old standards, design teams and product managers have more leeway to experiment with overdyeing and creative blends. In turn, this means less inventory waste for companies stuck with outdated, single-use dyes.
Meanwhile, stricter regulations on effluent color and total dissolved solids keep us alert to how the product behaves once it leaves our control. We work extensively with downstream facilities, running toxicity and cod/bod testing on spent baths, so that the Acid Brown 87 in use today meets tomorrow’s standards. Small changes upstream—better filtration, fewer salt additives, more consistent solubility—downscale directly to smoother compliance for textile wet processors. These hands-on adjustments reflect feedback from real-world audits and customer site visits, not just regulatory handbooks.
We've also found value in partnering with major end-users, who test Acid Brown 87 in pilot runs for non-textile uses. These pilots often reveal novel performance characteristics, sparking R&D on adjacent products and highlighting where our process needs more attention. Through these joint efforts, we picked up actionable data on shade lining for high-speed printing, or solution stability under extended storage, feeding back into continual process refinement.
On the factory floor, we approach the handling and storage of Acid Brown 87 with discipline learned from long experience. Our workers receive regular training in environmental, health, and safety protocols. All bulk handling operations use contained, dust-suppressed systems, and inspection teams monitor storage areas to prevent cross-contamination or accidental spills. Customers appreciate knowing that each drum or bag leaving our plant comes from a tightly controlled, safety-oriented environment — one where adherence to best practice is more than a marketing line.
In our view, process integrity extends beyond the plant. We work with logistics partners who maintain appropriate storage conditions from our facility to customer docks, reducing risk of moisture uptake, caking, or quality deterioration on the road. Full traceability lets us identify and manage any issues in the supply chain quickly. A long record of incident-free shipments and customer confidence demonstrate the effectiveness of this approach over time.
Several of our partners have produced dyed yarns and piece goods with Acid Brown 87 for more than a decade, and still communicate regularly with our technical support team. This continuity helps everyone adjust to fibers, styles, and production scale changes without risking color variation or output drops. In turn, it keeps us attuned to what real-world users actually experience in daily operations.
As the textile dye sector navigates complex pressures — sustainability mandates, rising demand for diverse color palettes, and stringent environmental norms — trust in the performance and safety record of Acid Brown 87 matters more than ever. Our direct, hands-on experience in manufacturing, plus years of collaboration with finishers and process engineers, underpins a product that is both highly functional and responsive to changing customer priorities. Rather than sticking to commoditized, one-size-fits-all offers, we view constant adaptation and close feedback with customers as the lifeblood of our manufacturing operation.
What sets Acid Brown 87 apart is not one single attribute, but a mix of qualities matured through sustained investment in process control, application support, and technical dialogue. Our journey making this dye has been shaped by learnings from every production run, each customer complaint, and all the iterative improvements that follow. Focusing on tangible results—ease of application, reliability in shade, readiness for evolving environmental standards—has produced a better solution for high-speed, high-stakes textile processing.
As manufacturers, our reputation rests squarely on each shipment, every batch, and each response to feedback. Acid Brown 87 isn’t just another entry in a list of dye offerings — it reflects years of discipline on the production line and a direct relationship with the daily reality of fields, factories, and end-user demands.