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HS Code |
702864 |
| Chemical Name | Direct Yellow 83 |
| Cas Number | 51200-87-4 |
| Ec Number | 257-119-0 |
| Molecular Formula | C25H22N6Na2O9S2 |
| Molecular Weight | 672.59 g/mol |
| Appearance | Yellow powder |
| Solubility In Water | Soluble |
| Melting Point | Decomposes |
| Dye Class | Azo dye |
| Application | Textile dyeing |
| Maximum Absorption Wavelength | 400-410 nm |
| Synonyms | C.I. Direct Yellow 83, Direct Yellow FBL |
| Stability | Stable under recommended storage conditions |
| Storage Conditions | Store in a cool, dry, well-ventilated place |
| Hazard Statements | May cause eye and skin irritation |
As an accredited Direct Yellow 83 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Direct Yellow 83 is packaged in a 25 kg net weight fiber drum with a tight-sealing lid, labeled with product and hazard information. |
| Shipping | Direct Yellow 83 is shipped in tightly sealed, moisture-proof containers such as drums or bags, labeled in accordance with international regulations. It should be transported in a cool, dry, and well-ventilated area, away from incompatible substances. Handle with care to avoid spills or exposure, and observe all safety guidelines during transit. |
| Storage | Direct Yellow 83 should be stored in a tightly sealed container in a cool, dry, and well-ventilated area, away from sources of ignition and incompatible substances such as strong oxidizers. Protect it from moisture and direct sunlight. Ensure proper labeling and keep it away from food and beverages. Use appropriate protective equipment when handling the chemical to prevent exposure. |
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Purity 95%: Direct Yellow 83 with purity 95% is used in cotton textile dyeing, where it delivers high color strength and uniform shade consistency. Particle size <10 µm: Direct Yellow 83 with particle size less than 10 µm is used in paper coloration, where it achieves swift dispersion and even print coverage. Molecular weight 738 g/mol: Direct Yellow 83 with molecular weight 738 g/mol is used in silk fabric printing, where it enables sharp pattern definition and excellent wash fastness. pH stability 5-9: Direct Yellow 83 with pH stability from 5 to 9 is used in aqueous ink formulations, where it maintains color integrity under varying pH conditions. Light fastness grade 4: Direct Yellow 83 with light fastness grade 4 is used in wallpaper manufacturing, where it ensures resistance to fading upon light exposure. Moisture content <0.5%: Direct Yellow 83 with moisture content below 0.5% is used in pigment pastes, where it prevents clumping and improves storage stability. Solubility in water 40 g/L at 25°C: Direct Yellow 83 with solubility 40 g/L at 25°C is used in garment dye baths, where it promotes rapid dissolution and efficient uptake. Heat stability up to 150°C: Direct Yellow 83 with heat stability up to 150°C is used in dyeing of viscose fibers, where it resists color degradation during high temperature processing. |
Competitive Direct Yellow 83 prices that fit your budget—flexible terms and customized quotes for every order.
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Direct Yellow 83 serves as a widely recognized colorant in the textile and paper industries. As the producer of this dye, we don’t just read about its qualities in technical documents—we see its performance, advantages, and challenges on the production line and in feedback from our customers. Decades of refining our process have shaped how we make and recommend Direct Yellow 83, and this shapes our commitment to delivering materials suited to fast-moving manufacturing operations.
Known in the trade by its Color Index designation, Direct Yellow 83 stands out for its robust shade and full-bodied yellow that offers consistent results on cellulose fibers and select blended substrates. Our manufacturing teams manage every parameter from raw material procurement to the precise control of reaction conditions, meeting purity benchmarks demanded by large textile houses. We oversee batch-to-batch reproducibility, as even slight variations in dye structure or particle size may spell the difference between reliable mass coloration and costly production reruns.
As hands-on manufacturers, we spend much of our effort designing an efficient synthesis pathway for this dye. Starting with aromatic amines, we employ diazotization and coupling operations under carefully controlled conditions. Any deviation—excess acidity, off-target temperatures, or substandard intermediates—can affect solubility and shade quality in a finished product. Our technicians regularly monitor HPLC and TLC profiles, not just for formal compliance but to confirm the tightest possible control over the dye’s molecular profile.
We avoid generic intermediates. Instead, we source high-purity precursors with rigorous traceability. Our reactors and filtration infrastructure are built to minimize contamination from previous batches—a practice that keeps unwanted tone drift at bay for our customers. The end result is a product that prints and dyes true to the expected lemon-yellow or golden tones without unpredictable undertones that can crop up from lapses in synthesis discipline.
Some end-users look for broad “direct yellow” types, but Direct Yellow 83 carries its own set of distinct specifications. The granule size, moisture content, and solubility index each relate directly to how efficiently the dye moves through downstream processes. For textile processors working with continuous dyeing or exhaust dyeing techniques, filterability and dispersibility reduce downtime, which translates to real savings on the production floor.
Out-of-spec material can plug up automated lines, or leave unwanted residue on drums and rollers. We don’t take shortcuts on dust control, so both bulk shipments and small lots arrive ready for safe handling. Packing is nitrogen-flushed for bulk powder or delivered in liquid form where rapid dissolution is a priority, ensuring controls continue past the factory gate.
Direct Yellow 83 colors a full range of cellulosic fibers—primarily cotton and viscose—and can work on linen, rayon, and certain polyamide blends with modified recipes. In textile printing shops running high-speed jet or pad-steam processes, Direct Yellow 83 impresses by delivering vivid coloration in as little as one pass. Its affinity for cellulose is strong, which supports sharp outlines and vibrant color blocks without excessive bleeding. Paper mill operators also tap Direct Yellow 83 when looking to achieve bright, unmuted shades for packaging and graphical applications, especially where color clarity needs to hold under alkaline or mildly acidic sizing conditions.
On full-scale jets or long-run pad baths, production managers favor Direct Yellow 83 because it demonstrates wash-off properties that match or outperform most direct dye competitors. This simplifies both post-application rinsing and effluent treatment, as the dye’s color-fixing nature helps avoid excessive runoff and associated regulatory headaches.
We routinely hear questions about why pick Direct Yellow 83 instead of other direct dyes, or compared with reactive or vat categories. Reactive dyes form strong covalent bonds with cellulose, but need more extensive washing and fixation steps. Vat dyes often push colorfastness to a higher tier, but require complex reduction, oxidation, and rinsing cycles—adding labor, water consumption, and chemical input. Direct Yellow 83 offers a balanced choice for large-scale, economic coloration where speed, economy, and ease-of-use override the absolute highest fastness demands.
Other direct yellows, such as Direct Yellow 12 or Direct Yellow 50, do appear on the market, but long-time finishers and printers see a clear distinction. Direct Yellow 83’s build gives a more saturated, deeper hue than the paler or more orange-shaded alternatives. In side-by-side runs, it resists fading better under indoor light and moderate sunlight, and its molecular profile withstands heat during calendering or pressing without significant off-shading.
In practice, when mills swap Direct Yellow 83 for a less robust direct dye, we’ve tracked more reprocessing incidents tied to off-target shades or poor migration. Producers mentioning this pattern often return to Direct Yellow 83 on subsequent orders, especially once they sample firsthand how a single small modification in pigment chemistry can ripple out through production costs, customer complaints, and waste handling challenges.
We engage directly with mill engineers, not just procurement offices or wholesalers. Our technical advisors have handled process troubleshooting on production floors—dealing with issues from batch-wise shade variation to unexpected deposit buildup on printing machines. Because we control the entire manufacturing upstream, our R&D team can quickly propose custom adaption, including tweaks to particle size distribution or formulation for specific local water profiles.
Rather than forcing a single product, we collaborate, reviewing dyehouse historical data, observing environmental controls, and suggesting changes—not just in dye selection, but in associated auxiliaries (wetting agents, leveling agents) and even process temperatures and pH. This cuts down trial-and-error time, limits waste, and helps users stabilize their lines in less time. Technical support doesn’t end at the sale; ongoing partnerships with major textile and paper plants have let us refine not only our product, but also our field guidance documentation and troubleshooting protocols.
Ensuring the environmental safety of Direct Yellow 83 starts long before delivery. Modern regulations stringently control amine content, heavy metal residues, and final effluent properties. Our production lines rely on closed-loop water management and in-plant organics capture, minimizing greenhouse gas emissions and solvent loss. As a direct dye, Direct Yellow 83 has an inherently lower environmental burden than some sulfur or heavy-metal-based counterparts. Finished product batches are always checked for compliance with the strictest global standards—REACH, ZDHC, and GOTS included—for restricted substances, formaldehyde release, and fastness-associated breakdown products.
Every year, we invest in effluent treatment upgrades and alternative energy sources, both to meet evolving standards and to minimize total lifecycle impact. We believe that cleaner production means fewer liabilities for our customers, and higher acceptance on international tenders—especially as governments and brands escalate sustainability requirements for textiles and paper goods.
We know first-hand the real-world impact of dust, exposure, and cross-contamination—because these risks begin on our factory floor. Worker safety drives our equipment standards. Our operators train on contained transfer systems, personal protective gear, and advanced ventilation whenever handling Direct Yellow 83 in powder form. For users, we recommend similar precautions—cleanroom hoppers, filtered loading areas, and clear labeling throughout the warehouse and dyehouse. Companies that invest in dust suppression and skin-contact control don’t just reduce risk—they also see improved batch accuracy and fewer line interruptions.
In our own labs, we track both acute and chronic exposure markers, cross-checking with the latest occupational health studies. Collaborating directly with major brands and regulators, we proactively address concern points, from allergenic amine traces to biocompatibility in final consumer goods. We’ve seen mills improve worker retention and accident rates simply by systemizing safe dye handling and storage. As part of our long-term commitment, we offer on-site safety training and process audits, supporting downstream partners from arrival dock to finished fabric shipment.
Color matching means more than hitting a colorimeter reading. Direct Yellow 83’s molecular profile allows for clean, repeatable blending for custom shades. We assist facilities in developing custom recipes tailored for local water chemistry, machine temperature drift, and specific substrate treatments. A constant challenge in multishade operations, such as for home textiles or paper stocks, is the shade drift observed over time or from batch to batch. Many times, this comes from variations in water quality, processing temperature, or auxiliary chemical impurities—not only from the dye itself.
To help handlers achieve tighter tolerances, we offer expedited shade card analysis and sample runs in collaboration with on-site personnel. We keep comprehensive reference spectra and performance data for previous lots, which supports users in troubleshooting color variance and supports regulatory submissions, such as for OEKO-TEX certification. Our technical support continues through production—meaning we stay available past shipment for troubleshooting, adjustment, and problem resolution.
Modern effluent regulation only grows stricter. Wastewater from dyehouses using Direct Yellow 83 often contains trace dye remnants and associated auxiliaries. Our experience includes advising customers on closed-loop recycling and advanced oxidation treatments, reducing total dissolved solids and organic load. Direct Yellow 83’s relative ease of removal compared to other dye types often lets users streamline their ZDHC conformance plans.
Rising expectations have triggered innovation in both dye chemistry and end-user process control. As regulators move to prohibit further classes of dye intermediates, and as consumer brands push for full chemical transparency, we work to maintain a product portfolio with full backward traceability. Our material safety data records don’t just sit in a binder—they are integrated into our supply chain IT systems, with tracked lot numbers that link to raw material origin and process conditions.
Line shutdowns and product recalls drain profits, especially in competitive textile and paper markets. Direct Yellow 83 offers proven compatibility with established auxiliaries, reducing the likelihood of chemical interference and unplanned process upsets. On-site engagement with our customers has let us identify points of equipment fouling or incomplete liquefaction that can slow production. By offering field-adjusted particle size and dispersibility grades, we let users adapt to high-pressure jets or low-shear batch dyeing with equal reliability. For integrated operations running 24/7, this can mean the difference between steady operations and overnight downtime.
We’ve seen customers reduce costs by migrating to Direct Yellow 83 from older, less reproducible yellow dyes—not just by cutting raw material waste, but through streamlined post-dyeing rinse cycles and reduced chemical cleaning. Our on-demand technical response team addresses questions as they arise, whether concerning unusual foam, incomplete uptake, or filter clogging. Over years, we have helped hundreds of operations stabilize their output, reducing complaint rates and improving on-time delivery for their own clients.
Our focus with Direct Yellow 83 doesn’t end with a transaction. Ongoing partnerships with textile and paper firms mean continuing dialogue, rolling feedback, and new formulation challenges. We collaborate on technical papers, side-by-side trials under mill conditions, and even custom dye development contracts where a slight modification offers a better fit for local water, process, or fabric type. Our aim isn’t to push excess inventory, but to ensure every shipment earns repeat demand based on end-user success in the field.
As manufacturers, we forge relationships across the industry—hosting plant tours for engineers, partnering with color technology institutes, and benchmarking our product lines against the latest international standards. This approach constantly exposes us to both new application fields and emerging regulations, letting us evolve Direct Yellow 83’s positioning and performance meeting new market demands. A dye’s value isn’t proven in isolated laboratory results; it is proven in months and years of real-world operations under constantly shifting manufacturing and regulatory realities.
With changes in fibers, from blends to recycled and bio-based alternatives, Direct Yellow 83 faces new tests. We adapt our processes accordingly, tuning synthesis, granulation, and blending stages for optimal uptake on both traditional cotton and next-gen materials. Demands for low-temperature processing and minimal resource inputs drive formulation updates, and we continuously pilot new auxiliaries that ensure full coloration at reduced environmental cost.
Small-batch and custom color orders have risen—triggered by fast-fashion and just-in-time manufacturing. Our flexibility in packaging, short-run synthesis, and cross-dyeing expertise have let customers tackle both volume and complexity in their offerings. Amid these changes, our commitment remains: Direct Yellow 83 will evolve with the needs of the trade, never trading fastness, reliability, or safety for short-term savings.
Years manufacturing, refining, and supporting Direct Yellow 83 have taught us what makes a difference on the ground. More than a catalog number or a datasheet, it’s the outcome of every process from supply to customer application, weighed by the real costs and risks mills face daily. Consistency batch to batch, integrity against process drift, easy adaptation in dyehouses, and partnership in troubleshooting—these factors distinguish Direct Yellow 83 in the direct dye market. We keep learning from every customer, constantly folding those lessons back into our recipes, support protocols, and technical documentation. The result—Direct Yellow 83 that works, not just in theory, but in the world of high-speed, demanding production.