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HS Code |
215057 |
| Product Name | Yellow 3GC Vat Yellow 33 |
| Chemical Class | Vat Dye |
| Color Index Name | Vat Yellow 33 |
| Color Index Number | C.I. 65385 |
| Appearance | Yellow powder |
| Molecular Formula | C32H18Cl2N4O10S2 |
| Molecular Weight | 773.54 g/mol |
| Solubility | Insoluble in water, soluble in concentrated sulfuric acid |
| Melting Point | Decomposes before melting |
| Application | Textile dyeing (cotton, cellulose fibers) |
| Light Fastness | Excellent |
| Cas Number | 54824-37-2 |
| Shade | Bright yellow |
| Main Uses | Dyeing and printing of fabrics |
| Stability | Good overall chemical stability |
As an accredited Yellow 3GC Vat Yellow 33 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Yellow 3GC Vat Yellow 33 is packaged in a 25 kg fiber drum with a sealed inner plastic liner for safe chemical storage. |
| Shipping | **Shipping Description for Yellow 3GC Vat Yellow 33:** Shipped in tightly sealed drums or bags, Yellow 3GC Vat Yellow 33 must be protected from moisture, heat, and direct sunlight. Handle with care to avoid dust release. Store in cool, dry conditions. Classified as non-hazardous for transport, but consult local regulations for specific packaging and labeling requirements. |
| Storage | Yellow 3GC Vat Yellow 33 should be stored in a tightly sealed container in a cool, dry, and well-ventilated area, away from direct sunlight, moisture, and incompatible substances such as strong oxidizers. Ensure containers are clearly labeled and protected from physical damage. Use proper safety measures to avoid inhalation or skin contact. Follow local regulations for chemical storage. |
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Purity 98%: Yellow 3GC Vat Yellow 33 with purity 98% is used in cotton fabric dyeing, where it delivers vibrant and consistent yellow shade yield. Particle Size 5 µm: Yellow 3GC Vat Yellow 33 at particle size 5 µm is used in high-speed textile printing, where it enhances dispersion and print resolution. Stability Temperature 120°C: Yellow 3GC Vat Yellow 33 with stability temperature 120°C is used in continuous dyeing processes, where it maintains color integrity under thermal conditions. Solubility in Alkaline Medium: Yellow 3GC Vat Yellow 33 with high solubility in alkaline medium is used in vat dye leuco application, where it ensures rapid and uniform fabric penetration. Lightfastness Grade 7: Yellow 3GC Vat Yellow 33 with lightfastness grade 7 is used in outdoor textile production, where it provides excellent resistance to fading under sunlight. Molecular Weight 570 g/mol: Yellow 3GC Vat Yellow 33 with molecular weight 570 g/mol is used in precision shade formulation, where it supports accurate dye dosing and reproducible results. Melting Point 230°C: Yellow 3GC Vat Yellow 33 with melting point 230°C is used in heat-set textile finishing, where it prevents dye sublimation and preserves color depth. Residual Moisture <1%: Yellow 3GC Vat Yellow 33 with residual moisture below 1% is used in automated dye feeding systems, where it reduces clogging and ensures process efficiency. Dispersion Stability 24 hours: Yellow 3GC Vat Yellow 33 with dispersion stability of 24 hours is used in batch dyeing operations, where it maintains homogeneous mixtures and reliable color uptake. Wash Fastness Grade 4-5: Yellow 3GC Vat Yellow 33 with wash fastness grade 4-5 is used in apparel manufacturing, where it assures long-lasting color retention after repeated laundering. |
Competitive Yellow 3GC Vat Yellow 33 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.
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Tel: +8615365186327
Email: admin@ascent-chem.com
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Vat Yellow 33, known around the plant as Yellow 3GC, keeps its place in our lineup because of one thing: consistency in color, batch after batch, under complex finishing conditions. In our line of work on the chemical floor, that isn’t just a slogan. It takes years of hands-on practice, tweaks to temperature, patience through long blending cycles, and plenty of discussions with mill partners to get that kind of repeatability. Textile mills, dye houses, and finishing laboratories count on Yellow 3GC for deep, stable yellow shades — and they let us know every time a batch exceeds expectations on their dye ranges.
Hundreds of yellows crowd dye cards and sample books, but Vat Yellow 33 offers something that steady clients keep coming back for: a luminous, muted yellow that holds up to heavy-duty industrial processes. Years of development go into each batch, refining raw material selection, controlling synthesis time, and improving filtration steps to ensure high purity and convertibility. We see brands coming to us when their regular yellow shades have failed chemical wash-fastness or sunlight exposure tests. Where many yellows will wash out or lose brilliance, especially in denim and technical finishing, Yellow 3GC stands tough with minimal tone shift across natural and synthetic fibers.
Every shift in our synthesis hall is tuned around environmental safety and long-term stability of our dye bases. We keep a close eye on all critical reaction variables — stirring speed, pH profile, batch temperature, and filtration intervals. The complexity of manufacturing Yellow 3GC goes beyond just bringing components together; each stage must eliminate risk factors for insoluble residues, metallic impurities, and off-color hues. We regularly run spectrophotometric checks before final drying, so each kilo meets internal laboratory benchmarks for shade fidelity and color strength.
A good number of our mill partners work with diverse substrates — combed cotton, linen, viscose staple, and regenerated cellulose blends. Yellow 3GC penetrates these materials deeply. Experienced dyers have told us that this product covers mass batches pari passu — you won’t notice stark shade differences across fabric bolts. Our routine mill feedback surveys show only minor laundry shrinkage and high migration resistance, which keeps garments looking sharp after months of use. The color also remains stable through both acidic and alkaline after-treatments, which many garment wash houses need for their proprietary cleaning cycles.
Apparel stylists and textile designers value that our Vat Yellow 33 always brings out a soft but distinct tone ideal for outerwear, casualwear, and home furnishing fabrics. Mills especially like that it withstands both hot peroxide bleaching and abrasive mechanical agitation, which helps keep garments looking fresh after multiple wears.
We make Yellow 3GC in highly batch-controlled crystalline powder, filtered at each step to screen out dust-prone fines and large undissolved particulates. Each final kilo contains an average dye content set by internal quality controls, backed by both in-house and outside certified labs. Our technical team consistently monitors moisture uptake and component uniformity because those little variances will show up as defects down the customer’s line. We keep fineness just right for quick wetting in the dye bath while preventing excessive dust, which eases blending in both high- and low-pressure dye machines.
For those who need more technical background: our Yellow 3GC packs a strong coloring index, sharp particle size control, and tight moisture regulation for reproducible results. This matters for those who aim for both lab dips and bulk dye runs to match precisely — without color drift or off-tone edges. Our data across three years show very tight tolerances in CIELAB measurements and nearly zero failed washes in standard AATCC tests.
Brands in apparel, upholstery, and high-performance industrial textiles have circled back to us because Yellow 3GC works across a surprising range of end-uses. From vivid yellows on classic blue jeans — where sunlight and abrasion wipe out most colorants within weeks — to subtle pastel shades on luxury home linens, this dye handles exposure, repeated laundering, and even spot-cleaning chemicals. We see market demand tending toward more “lived-in” and authentic finishes, especially in denim. Yellow 3GC’s formulation lets garment finishers experiment with enzyme and acid treatments without fear of rapid fading.
In testbed automotive applications, upholstered panels and headliners have kept their yellow vibrancy after heavy UV simulation and sweating tests. Mills value the flexibility — in blends with blue and red vats, 3GC yields rich olive greens and autumnal oranges while keeping process downsides (speckling, dulling, or streaking) minimal. We have tracked field trial garments for over a year and see clean color retention, even on high-wear collar edges and cuffs.
Working as a manufacturer, we’ve seen countless alternatives come and go. Not every dye delivers on wash-fastness or environmental safety. Some extensions of the Yellow 3GC family, like Vat Yellow 1 or Vat Yellow 47, can cover specific market requests (soft golds, deeper ochres), but the core product keeps outperforming by keeping balance — not so bright as fluorescent dyes, luminous enough for signature yellow looks, and always passing basic toxicity screens. Clients ask specifically for VAT Yellow 33 in export shipments because its supply is stable, and traceability is guaranteed from our raw materials up.
We design Yellow 3GC to reduce batch-to-batch migration and speck formation on high-speed equipment. That isn’t just a theoretical claim; we’ve cut down on customer plant complaints about dyestuff buildup and nozzle blockages by working directly with end-users for machine-specific optimizations. In contrast, many competitive vat yellows in the same cost bracket fall flat during rapid ramp-up or high-liquor-ratio dye jobs, where even minor solubility problems can cause sheet blotching or pale streaks.
Years of partnership with critical textile processors and lab teams have proven that the value of Vat Yellow 33 sits in robust, straightforward processing. We supply color cards for preliminary matching, but the key is in large-scale vat work. Dyers who run both rope and open-width dyeing lines appreciate how controllable the shade depth remains, whether for fine yarn-dyed shirtings or heavyweight denim rolls. It doesn’t matter if the plant is running traditional indigo tanks, or retrofitted with the latest continuous dyeing machinery — Yellow 3GC fits into modern automation as well as old-school batch vats.
Down the value chain, we hear from knit fabric engineers that the dye disperses smoothly, picks up evenly, and shows low risk of ring dyeing (commonly a pain point for yellows in circular knitting). Technical forms of this color prove valuable for performance workwear lines as well, where both the tolerance for bleach and strong detergents are non-negotiable.
We take pride in the work we’ve done to improve environmental controls at every production stage. Years ago, regulatory changes pushed every manufacturer in this sector to reconsider raw material sources and process solvents. Our facility adopted enclosed reactors and multi-stage filtration for precise effluent management. Spent process bath water recirculates through biological treatment, sharply minimizing waste and meeting both national and international safety standards. Inside our development team, we screen every input for heavy metals, aromatic amines, and process by-products — our own staff’s safety and our customers’ confidence in the product depend on it.
Yellow 3GC made here comes with complete batch documents, inspected by both in-house quality managers and third-party auditors as needed. We keep open lines with dyehouse clients sharing data on wastewater, auxiliary compatibility, and heavy-metal absence, supporting their drive towards more sustainable certifications.
Some in the sector try to push volume without focusing on thermal control or raw material consistency, but we learned early on that minor savings in reaction time or reagent grades always cause trouble downstream. From decades of troubleshooting, we focus on tracking every stage: charge weights, pH correction, filtration speed, and particle size adjustment. We use robust documentation for every parameter. Every lot gets traceability straight back to the upstream batch.
To those who have experienced shade drift or unpredictable dye uptake on large machines, it usually comes down to split decisions in the dyehouse. We work alongside line operators, showing how measured adjustments to liquor ratios, salt optimization, and agitation profiles count far more than big, flashy “technology” upgrades. Reliable color starts on our production floor but stays strong with informed partners down the supply chain.
Based on feedback from dozens of supply chain partners, our technical service team encounters a few core complaints. Issues such as dye migration, specking, and uneven pickup happen most often with poor raw material control or insufficient wetting agents. Yellow 3GC performs best with proper prescour and standard auxiliaries. Our teams keep open records of typical pH and wet pickup values associated with zero-defect lots. We routinely provide on-site consultations for new machine installations, checking shade run-in and optimizing liquor to dye ratios to prevent wastage or off-color occurrences.
We have helped mills with fast troubleshooting when facing new fabric blends or unexpectedly high water hardness. Many times, our tech personnel visit production facilities, review dosing processes, and recalibrate expectations between product specifications and real-world mill constraints. We don’t believe in sending product and forgetting about it — our goal is a long-term partnership built on respect for both client expertise and plant realities.
We see growing demand for both shade consistency and low-environmental-impact solutions. More clients from fashion, home textile, and industrial sectors want assurances about every link of the sourcing chain — and rightly so. Our investments in closed-loop waste handling, renewable inputs, and automated shade-matching keep us ahead.
We treat every batch of Vat Yellow 33 as a reflection of our commitment to the industry’s long-term viability. As regulatory pressures mount worldwide, customers value clear documentation, transparent process changes, and rapid communication in case of any process challenge. Our lines stay open through regular audits, third-party verifications, and lab certifications which bolster trust in the field.
Yellow 3GC succeeds because its performance continues through industry change: more sustainable chemistry mandates, shifts in consumer fashion, and relentless cost pressures from global competition. Its adaptability across natural and synthetic fibers, resistance to extensive after-treatments, and robust batch traceability stand as proof of product maturity. We build on a heritage of partnership — not just pushing volume, but delivering value through responsive technical support, regular performance checks, and ongoing investment in cleaner and safer production.
A lot of attention goes to new “eco-friendly” coloring systems, but experience shows that few match the robust fastness profile of classic vat dyes for outdoor, industrial, or performance fabrics. Many newer products skip deep trials on tough substrates; Yellow 3GC, by contrast, has seen decades of field testing. Our history bears out that with careful attention to both upstream procurement and downstream process, Yellow 3GC matches or exceeds market trends in both shade depth and processing reliability.
Some alternative yellows on the VAT index may offer brighter shades or even slightly quicker wetting, but they often bring in tradeoffs: more bleed during washing, poor resistance to strong oxidizers, or incompatibility with tight environmental controls. We have run rigorous side-by-sides on these new entrants and consistently find our Yellow 3GC delivering higher pass rates across multiple test series, from ISO-standard bright light exposure to EN-tested abrasion cycles.
As brands move towards unique digital print processes and batchless garment dyeing, the requirement for a dye that disperses cleanly, resists digital print artifacting, and upholds batch shade stability becomes sharper. Yellow 3GC’s fine-tuned granulating and moisture-balancing steps make it friendly to automation and high-speed color addition without clogging filters or forming silting at low liquor ratios.
Ultimately, years of manufacturing direct for textile, apparel, and industrial clients have taught us one lesson: consistency builds trust. We know the hands at each production stage, from raw batch accumulator to final packers. Every day, we work under chemical safety codes that prioritize both product and workforce health. Our role is to deliver not just a pigment, but a working solution honed through feedback, innovation, and direct accountability.
Yellow 3GC as Vat Yellow 33 doesn’t stand alone as a commodity — it stands up under real-world scrutiny, in the hands of those who push textile technology and material science forward. We treat each shipment as an extension of our reputation, built through countless cycles of reaction, blending, and return visits to partners across continents. This is how genuine, high-quality chemical manufacturing responds to modern color challenges — not simply by offering a shade, but by shaping the process to fit partners’ real needs and realities.