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HS Code |
175235 |
| Product Name | Direct Violet BK |
| Chemical Class | Azo dye |
| Color Index Number | Direct Violet 51 |
| Appearance | Dark violet powder |
| Solubility | Soluble in water |
| Molecular Formula | C31H24N6Na2O9S2 |
| Molecular Weight | 762.67 g/mol |
| Ph Value | Approximately 7-8 (1% solution) |
| Application | Textile dyeing (cotton, paper) |
| Light Fastness | Moderate |
| Melting Point | Decomposes |
| Cas Number | 4430-18-6 |
As an accredited Direct Violet BK factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Direct Violet BK is packaged in a 25 kg net weight fiber drum, lined with plastic, and securely sealed to prevent moisture. |
| Shipping | Direct Violet BK is shipped in tightly sealed, corrosion-resistant drums or bags to prevent moisture absorption and contamination. Proper labeling with hazard information is required. Store and transport the chemical in a cool, dry place, away from incompatible substances. Ensure compliance with local regulations regarding the handling and shipping of dyes. |
| Storage | Direct Violet BK should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of ignition. Keep the container tightly closed to prevent moisture absorption and contamination. Store away from incompatible materials such as strong oxidizers and acids. Ensure proper labeling and avoid exposure to extreme temperatures to maintain the chemical’s stability and quality. |
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Purity 98%: Direct Violet BK with purity 98% is used in textile dyeing processes, where it delivers consistent and vibrant color strength across cellulosic fibers. Lightfastness Grade 4: Direct Violet BK with lightfastness grade 4 is used in the production of household linens, where it ensures long-lasting color retention under exposure to sunlight. pH Stability 5-9: Direct Violet BK with pH stability range 5-9 is used in paper tinting applications, where it provides uniform color distribution without precipitation across varying process conditions. Solubility 50 g/L at 25°C: Direct Violet BK with solubility of 50 g/L at 25°C is used in liquid ink formulations, where it allows for high-concentration, stable dispersions for inkjet prints. Melting Point 220°C: Direct Violet BK with a melting point of 220°C is used in synthetic fiber dyeing, where it enables high-temperature processing without degradation or color fading. Particle Size D90 < 10 μm: Direct Violet BK with particle size D90 less than 10 μm is used in coating applications, where it achieves fine and uniform pigment dispersion for smooth surface finishes. Thermal Stability up to 180°C: Direct Violet BK with thermal stability up to 180°C is used in plastic coloring applications, where it maintains color integrity during melt processing. Moisture Content <1%: Direct Violet BK with moisture content below 1% is used in powder detergent manufacturing, where it prevents caking and ensures free-flowing powder consistency. Absorption Max 565 nm: Direct Violet BK with absorption maximum at 565 nm is used in analytical reagents, where it facilitates precise spectrophotometric measurements for quantitative analysis. |
Competitive Direct Violet BK prices that fit your budget—flexible terms and customized quotes for every order.
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Tel: +8615365186327
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Direct Violet BK, also known by its chemical name Direct Violet 51, stands out for its deep bluish-violet hue and trusted performance in the textile dyeing sector. As a direct dyes manufacturer with decades of experience, we see this product daily on the production floor, from raw input to finished goods. What sets Direct Violet BK apart from the options in the direct dye family comes down to more than its color. The dye shows clear consistency in shade development across cotton and viscose fibers, producing clear, stable tones wash after wash.
Direct dyes like this one have walked through more than a century of history in wet dyeing. We hold this product in high regard for its reliability on cellulosic fibers, where it delivers strong affinity and deep, even coloring right from the first immersion. Our operators often remark that the shade depth feels more defined and ‘clean’ compared to older alternatives. Unlike complicated dye recipes or blends that demand extra steps, the BK model offers a much simpler application—measured, mixed, and applied cleanly on standard jet and open-width machines. Dyers appreciate the productive time savings, especially in the busy seasons.
Direct Violet BK’s chemistry roots itself in the diazo class of direct dyes, designed for direct application without the need for mordants. In factory-scale production, subtle differences near the molecular level make a sizable difference during bulk runs. The product’s good solubility ensures operators avoid the undissolved residues common with cheaper imitations, cutting down time spent on filter maintenance. Its application does not release stubborn foams or sediment, so machines need less clean-out—the sort of practicality that keeps schedules and costs predictable.
Performance always anchors the conversation. As a working manufacturer, we track results—middle management needs proof, not glossy claims. With Direct Violet BK, repeat dyeings produce almost zero tone drift across seasonal batches. This dependability is essential for customers who value color matching, such as garment brands and home textile firms working on large contract orders. Compared to other violets, the BK shade maintains better light fastness, so laundered and exposed goods avoid rapid fading. Quality control teams report minimal shade migration, so printed patterns or yarn-dyed fabrics retain their intended appearance far longer than with low-grade competitors.
Direct Violet BK comes as a synthetic powder, typically packed in moisture-resistant bags to prevent caking during storage. The shade—a medium to deep bluish-violet—translates well onto light, medium, and heavy weight cotton fabrics. Our technicians dissolve the powder in hot water to prepare strong stock solutions, which maintain clarity as long as hard water salts are kept away. Dosing rates run from half to two percent by weight of fabric, depending on the desired depth. The clear instructions, honed by years of customer feedback, help mills cut down on waste and keep their effluent clean.
Some of the most experienced dyers in the business prefer Direct Violet BK for piece dyeing, package dyeing, and printing routines. The dye attaches to the fiber under mildly alkaline or neutral conditions, allowing for flexibility in adjusting fabric handle, shrinkage, and shade buildup. The product's affinity for cellulose—especially in its purest cotton and rayon forms—remains solid. Even on blends with polyester or nylon, BK delivers a base tone that can be leveled out with additives or finished with washes, though full poly blends will always demand other dye classes for true shade depth.
Comparisons in the dye business always matter because buyers want to know exactly what changes with their selection. Take Direct Violet BK’s color profile—while indigo or direct blue dyes flood the market, they often push either too blue or too faded a purple for clients looking for true violets. BK presents a saturated, warm violet that reads less fluorescent and less ‘muddy’ than conventional direct violets. Consistent lots, anchored by controlled synthesis and stringent particle size checks, ensure no batch slips through with a noticeably different tone.
Against popular reactive or vat violets, Direct Violet BK’s application skips the extra fixing agents and salt dosing typical of those classes. Dyers working without reactive chemistry infrastructure choose BK as a workhorse for prints and grounds where good penetration, levelness, and price come ahead of washfastness. Washfastness on cotton grades typically outperforms lower-tier direct dyes but does not reach the heights of fixed reactive systems—novices should understand this tradeoff remains consistent across the industry.
Unlike the more volatile acid violets, which can require careful pH and temperature controls, Direct Violet BK tolerates routine operational swings, letting plant managers avoid costly dyehouse bottlenecks. The powder resists clumping in the warehouse, a small but meaningful advantage versus sticky or lumpy grades that can frustrate floor staff in humid regions. This detail echoes in customer conversations—no one wants unnecessary downtime chasing clumps through the dissolving tanks.
Factories run on schedules and output, not just chemical specs. We engineer our Direct Violet BK for predictable performance in full-scale dyehouses, not just lab grams. Dyehouses need their violet supplier to back claims with strong supply stability, especially on larger contracts. We anchor our BK output around a robust raw material supply chain, so disruptions don’t ripple out to our customers. This can’t be replicated by traders or brokers shuffling warehouse cartons. Resellers buy finished bags, but manufacturers must ensure tight batch consistency from start to finish.
Long-term partners appreciate the investment in filtration and dust control during packing—a practical response to operator safety and plant hygiene. Feedback from international inspection audits highlights not just color strength, but the absence of persistent odor and particulate dust that can trouble lesser-made powders. Such process standards push us above other market offerings where cost-cutting shortcuts lead to variable product texture, trace contaminants, or inconsistent shelf life.
Technical support gives color formulators confidence. Because we produce Direct Violet BK ourselves, our technical engineers test each production run in both standard and modified factory liquor conditions. If a partner faces a sudden problem with migration, solubility, or tone, we don’t just reference a generic data sheet. We re-create the setting, offer guidance, or even suggest process tweaks to save a batch. Such technical assurance builds the kind of working relationship that keeps clients loyal through economic cycles.
Look at the current business landscape—mills demand certainty and speed to keep up with fashion, apparel, and home interiors. Direct Violet BK meets these needs. Because the dye is ready to use straight out of the bag, teams accelerate sample production. Portfolios now change in weeks, not just months, and nothing slows a new launch faster than unreliable dye lots or unexpected shade variation. Our customers rely on BK’s predictability for renewably sourced cotton and viscose, which continue dominating sustainable fabric lines. Brands favor direct dyes for their low setup costs and clear wastewater streams, which matter in tight environmental audits.
BK’s easy integration into most direct dye recipes enables styling flexibility, working on everything from children’s bedding to athletic wear. Bulk dyers see the biggest returns—drum machines, jet flows, cold pad-batch routines, and rotary screens all accept the product without special equipment. Our process engineers have seen BK perform under high throughput, churning out solid results with minimal re-dyes. Large export houses value BK’s performance during certification audits, where strict tolerance to color shift under different lighting sets apart reliable suppliers.
Today, sustainable production and minimized pollution dominate factory planning. Direct Violet BK’s chemistry fits into modern waste water treatment systems. The dye does not generate chlorinated byproducts or stubborn sludge in routine post-dye baths. Our product tests show no persistent foaming, which aids mills in maintaining clear effluent standards across discharge points. Because the BK’s solubility minimizes undissolved losses, end-of-pipe pollution drops, supporting cleaner water returns—an advantage regulators and cost-focused managers both notice.
Through working with major dyehouses in regions under strict discharge regulations, we’ve adjusted our synthesis to hold down auxiliary salt and surfactant residuals. Meeting the needs of eco-label programs, especially for children’s textiles, shapes our formulation policy. Compliance teams can call for a recent analysis, and we deliver batch-specific certificates based on real-time output, not old archive data. These traceability and environmental safety improvements mark a real world change for both us and our clients, not just a checkbox for certification.
Mid-size and large-scale mills count every cent—raw input cost, labor time, and machine wear. Direct Violet BK’s characteristics allow floor managers to streamline labor allocation; less supervision and physical intervention cuts headaches for both supervisors and operators. Our regular clients praise how seldom they need to clear out lines for reprocessing or deal with filter blockages. The flow of powdered dye through automated dosing arms is smooth, lowering maintenance, and keeping output on track even during peak season.
Laboratory staff value how quickly Direct Violet BK moves from bench beaker trials to production-sized test runs with only minimal adjustment. Transferability between scales speeds up color approval cycles, ensuring buyers and end customers get their deliveries on time. Customers appreciate consistency, from the smallest batch to truckload orders. Feedback from mills relying on BK regularly brings up the ease of rinsing during post-dyeing—the dye does not hold onto the fiber so tenaciously that it takes gallons of extra rinse water, but it also doesn’t fade away halfway through a wash-fastness standard.
The powder form and packaging suit a variety of climates, from the humid tropics to dry continental interiors. Bags arrive sealed, stably packed against transit shocks and moisture ingress. Each order batch draws from a consistent synthesis, avoiding color drift that would trigger costly reworks. Warehouse staff appreciate how Direct Violet BK resists clumping or dust formation—a practical bonus when forklifts and conveyors work non-stop.
Most buyers do not want complications. They want violet dye that stays true across their contracts, regardless of weather, labor, or fluctuations in factory conditions. Bulk textile finishers, high-volume garment units, and specialty product lines have all counted on our Direct Violet BK over multiple seasons. What matters to them: no last-minute color rejects, no surprise packaging flaws, and no wasted time haggling over technical ambiguities. Purchasing managers prefer to build a record of stable supply; designers want to work confidently with predictable violets; engineers see the value in a trouble-free application.
Direct Violet BK rarely surprises—a rare compliment in the dye trade. It simply does what the factory demands: Color, clarity, and control. From shade matching to process management, years of working with hundreds of mills have proven that success in this business often means removing obstacles, not adding exotic claims. Direct Violet BK has earned its central spot in the direct dye chart by delivering on these shop-floor promises, batch after batch, through honest process improvements and a commitment to feedback.
As the fabric and apparel sectors head into faster trend cycles and stricter scrutiny, factories need inputs that keep up. Direct Violet BK sits firmly in our ‘workhorse’ stable—a dye we trust to anchor new color launches, revive traditional basics, and back up volume orders where having to rework production is not an option. Process managers who want their lines free from technical drama often shortlist this product as a mainstay. It handles seasonal color changes with fewer calibration headaches, a welcome relief for batch planners and floor supervisors.
Digital color management relies on stable spectral data—factory measurements show Direct Violet BK’s light reflectance stays inline across time, supporting accurate recipe matching. This traceability supports even the most demanding downstream labeling requirements. Large importers and buying offices often demand extensive pre-shipment color control; Direct Violet BK delivers a high degree of matchability, making factories less vulnerable to penalty claims or returned goods. This reliability also secures our place in many major brands’ approved supplier lists, not by chasing every new chemical trend, but by focusing on process rigor and straightforward quality.
Manufacturers who look for ways to boost fiber resource efficiency—reducing over-dye, limiting second-grade stock, and keeping lines up—naturally gravitate toward solid products. Direct Violet BK fits into these ambitions by minimizing the adjustments and downtime linked to most dye changeovers. Whether converting from deep navy programs, lavender runs, or seasonal specialty lines, the core properties of Direct Violet BK ease the transition, sparing both time and effort.
Chemical production in our plant seeks constant, practical improvements. We do not rely on advertising gloss—real feedback from dyehouse partners drives our upgrades, from dust control in the mixing rooms down to the packaging glue. If a client in South Asia struggles with humidity affecting flow, our process engineers test batch samples under local warehouse conditions and adjust powder composition as needed. This hands-on involvement sets a real manufacturer apart from box-moving intermediaries who lack this process knowledge.
Our in-house QC teams track stability not just at the factory, but across our global network of users. We incorporate lessons from auditors, modular dyehouse builds, and local government standards. During export surges, we prioritize supply continuity for regular partners, supporting their schedules during capacity peaks—something traders out of step with the supply network cannot guarantee. Continuous certification updates, custom-pack batching, and flexibility in logistics—these measures come from tight manufacturer-client cooperation backed by on-site production know-how.
In an environment where every choice—raw material, equipment, staff hours, environmental compliance—has direct effects on competitiveness, leading mills consistently select Direct Violet BK due to clear, repeatable results. It sustains its violet character through fashion trends and shifts in fabric selection. Side-by-side tests with newer synthetics have confirmed for us that Direct Violet BK rarely loses out in performance-to-price calculations, especially where large dye volumes push quality control front and center.
Direct Violet BK stands as a practical answer for today’s textile and dyeing factories. It supports operational simplicity, real-world cost savings, and measurable consistency. As a manufacturer, we see every bag leave the packing line, shaped by both the long tradition of direct dye chemistry and the unfiltered reality of the modern factory. Each season and every innovation in our process comes from working directly with industry partners, providing a dye that supports day-to-day reliability without trading away color vibrancy or fiber compatibility. Dyehouses looking to secure both their long-term color standards and environmental commitments continue to trust Direct Violet BK as a cornerstone solution.