Products

Direct Fast Black GF

    • Product Name: Direct Fast Black GF
    • Alias: Direct Black 22
    • Einecs: 220-098-7
    • Mininmum Order: 1 g
    • Factroy Site: Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry: admin@ascent-chem.com
    • Manufacturer: Ascent Petrochem Holdings Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    350943

    Product Name Direct Fast Black GF
    Ci Name Direct Black 22
    Ci Number 35435
    Chemical Class Azo dye
    Molecular Formula C44H32N13Na5O17S5
    Appearance Black powder or granules
    Solubility Soluble in water
    Application Textile dyeing (cotton, viscose, paper)
    Maximum Absorption Wavelength 600-620 nm
    Ph Stability Stable in neutral and alkaline conditions
    Lightfastness Moderate to good
    Cas Number 6473-13-8

    As an accredited Direct Fast Black GF factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The packaging for Direct Fast Black GF consists of a 25 kg blue fiber drum with a tightly sealed inner polyethylene liner for safety.
    Shipping Direct Fast Black GF should be shipped in tightly sealed containers, protected from moisture and direct sunlight. Store in a cool, dry, and well-ventilated area. Ensure containers are clearly labeled. Handle with care to avoid spills or dust generation. Comply with local regulations for transport and storage of chemical dyes.
    Storage Direct Fast Black GF should be stored in a cool, dry, and well-ventilated area, away from direct sunlight, heat sources, and incompatible materials such as strong oxidizers. Keep the container tightly closed when not in use to prevent moisture absorption and contamination. Ensure that the storage area is equipped with proper spill containment measures and labeled clearly for safe handling.
    Application of Direct Fast Black GF

    Purity 98%: Direct Fast Black GF with 98% purity is used in cotton textile dyeing, where it ensures uniform and intense black coloration. Solubility in Water 60 g/L: Direct Fast Black GF with solubility of 60 g/L is used in continuous dyeing processes, where it provides rapid dissolution and efficient color application. Light Fastness Grade 4: Direct Fast Black GF at light fastness grade 4 is used in garment manufacturing, where it delivers enhanced resistance to fading from sunlight exposure. pH Stability 5–9: Direct Fast Black GF stable at pH 5–9 is used in cellulosic fiber dyeing, where it maintains consistent shade across varying bath conditions. Particle Size <20 µm: Direct Fast Black GF with particle size below 20 µm is used in ink formulation, where it achieves smooth dispersion and high color uniformity. Moisture Content ≤2%: Direct Fast Black GF with moisture content not exceeding 2% is used in powder blending for pigment pastes, where it improves storage stability and prevents clumping. Melting Point 180°C: Direct Fast Black GF with a melting point of 180°C is used in heat-set printing inks, where it withstands high processing temperatures without degradation. Salt-Free Grade: Direct Fast Black GF in salt-free grade is used for eco-friendly textile dyeing, where it minimizes sodium ion contamination and improves effluent management. Dispersibility Index >95%: Direct Fast Black GF with dispersibility index greater than 95% is used in high-speed jet dyeing, where it offers excellent dispersion and avoids fabric streaking. Thermal Stability 120°C: Direct Fast Black GF stable up to 120°C is used in high-temperature laundry applications, where it retains original shade without thermal degradation.

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    Certification & Compliance
    More Introduction

    Direct Fast Black GF: Supporting Consistent Textile Dyeing

    Our Direct Fast Black GF and What Stands Behind It

    At our facility, every batch of Direct Fast Black GF starts with highly scrutinized raw materials because color precision means less waste and better final results. Direct Fast Black GF, known across the industry for its deep, neutral black shade, flourishes as a direct dye used widely in cellulosic fiber dyeing. Textiles that head for industrial uniforms, home furnishings, and even export-bound apparel trust this color for its reliability under pressure.

    Direct Fast Black GF comes in powder form, recognizable by its fine, free-flowing texture and characteristic dark granules. High solubility helps the dye dissolve quickly in water at room temperature, which minimizes pre-dyeing process times. Consistency across dye lots is a direct reflection of attention to detail on the production floor; with complex mixing and filtration techniques refined over years, we reduce particulate contamination and off-tones.

    Textile workshops have learned from experience how a small shift in dye structure can trigger noticeable variation after soaping or sun drying. That is why control of azo and diazo compound chemistry sits at the heart of our manufacturing. Experienced color formers operate controls and run verification at every stage, rather than relying solely on automated protocols. The outcome: towels, canvas bags, and viscose fabric dyed with our Direct Fast Black GF resist fading, wash-off, and atmospheric changes better than intermediate-grade blacks in the same class.

    Choosing Direct Fast Black GF Over Other Black Direct Dyes

    Black dyes might look interchangeable until repeated production cycles reveal where hidden costs arise. The distinction comes down to differences in fastness, brightness, and waste stream management. Lower-grade blacks often produce a slightly brown or blue undertone, which gets amplified with repeated washing in commercial laundries. Our Direct Fast Black GF achieves a neutral undertone, so finished fibers preserve a uniform appearance over time. This property benefits mass launderers and bulk fabric converters under pressure to cut back on re-dyeing and customer complaints.

    Color strength stays within controlled parameters by monitoring every charge’s dye content, which cuts variation between production runs. Less correction means less chemical waste and better environmental metrics—an important matter since the industry faces growing scrutiny around discharge color and effluent treatment. We run comparative tests against other direct black variants, including Direct Black 22 and Direct Black 38. Direct Fast Black GF outperforms these at high liquor ratios, especially in large-batch dyeing where solution stability directly affects cost metrics.

    Colorists working with Direct Fast Black GF in pre-treatment and dye houses often remark on its ease of application. Bleeding and stain migration reduce productivity and increase cleanup costs. The chemical structure of Direct Fast Black GF limits this, keeping auxiliaries and salt levels manageable. By reducing salt requirements, water management in dyehouses becomes simpler, allowing easier compliance with municipal effluent standards.

    Practical Applications in Textile Manufacturing

    Direct Fast Black GF works best with cellulosic substrates—especially cotton, viscose, and their blends. In woven mills, piece dyeing lines use the product for deep blacks on fabric, taking advantage of rapid uptake without stubborn after-bath residues. Knitting mills use it to generate lasting black in jersey and rib fabric, where fabric finish impacts both look and feel. Thread and yarn dyers prefer its shade reproducibility, helping ensure their goods meet strict shade card requirements for export contracts.

    Home textile manufacturers have relied on Direct Fast Black GF for curtain and bed linen production. The color holds under repeated machine washing and exposure to sunlight in residential settings, where shade shifting can easily become a customer service headache. Workwear and utility fabric plants take further advantage of the dye’s strong fastness. High-wear garments dyed in bulk face repeated high-temperature, high-alkali washings; black shade stability directly drives longer product life.

    For dyeing methods, our experience shows that Direct Fast Black GF disperses quickly in open-width padding and jet dyeing systems. Shorter bath times improve equipment throughput while reducing steam, electricity, and water consumption per kilogram of finished fiber. Fabric finishers seeking a sharp jet black on poplin and sateen blends consistently favor Direct Fast Black GF as a more manageable solution, both for quality and budget.

    Quality Standards and Production Controls

    Quality standards for Direct Fast Black GF start in our in-house labs where viscosity and shade depth get tested before every lot moves to packaging. Dye strength stays predictable across lots thanks to our closed-loop blending systems, which flag outlier readings before product leaves our plant. Each output ships with a technical report covering fastness values—washing, rubbing (wet and dry), and exposure. Buyers avoid the risk of untraceable mixing and blind reselling found in open commodity channels. Instead, they gain reliability supported by plant-level batch records and quality documentation.

    Direct Fast Black GF manufacturing teams have seen what happens when inconsistency creeps in. Poorly controlled particle size, improper mixing, or outdated equipment lead to dye floating and uneven application, especially in closed-drum or continuous dyeing lines. To avoid this, every lot gets screened on vibration filters, grain size checked under magnification, and solubility verified at multiple pH values. These steps, highlighted during routine customer audits, reduce the chance of line stoppages or uneven color build-up at the customer side.

    Environmental compliance follows local and international rules. We limit sodium sulfate and process salt loads during washing and drying steps. Strong dye uptake in fiber means lower color bleed to wastewater, making Direct Fast Black GF less taxing for on-site effluent systems. Sludge and extraction processes are streamlined by high dye affinity, which lowers both treatment costs and environmental risk.

    Solving Industry Problems Through Technical Collaboration

    Dyehouse managers and production engineers frequently approach us about recurring problems with uncontrolled color drift and process residue buildup. Many bring sample runs of their past black yarns, or feedback from downstream sewing units frustrated by poor rub fastness. We collaborate in real-time—sometimes inviting customers to our plant floor to review production blending, calibration, and microfiltration steps. Field visits often reveal common themes: too many impurities, uncontrolled shade drift across rolls, and insufficient rinse routines.

    Direct Fast Black GF opens new options for dyehouse managers seeking both deeper shades and fewer surprises during mass production. Improvements we introduce—tighter particle distribution, more rigorous pH control, pre-pack washing — all directly tie back to real experiences resolving specific field failures. Supporting customers through after-sales technical guidance is part of building trust; our team has advised countless process engineers on bath control, washing, and waste minimization.

    Questions about compatibility with reducing agents, salt levels, or blending with other direct dyes surface regularly. Given realistic plant conditions, we customize dilution ratios and batch sizes to match the customer’s existing machinery. For example, older winch and jigger systems need modified dispersions and controlled liquor ratios to hit a dense, even black. We respond proactively rather than waiting for quality complaints.

    Handling, Storage, and Longevity on the Shop Floor

    Experience shows that humidity control and careful storage keep Direct Fast Black GF free-flowing, preventing caking and dust. Our packaging uses multi-wall bags that shield contents from moisture uptake during shipping or monsoon storage. Dyehouses working in humid regions keep the product’s characteristic performance by storing it in dry, ventilated rooms, away from process steam or wet stock. Regular turnover of stored lots ensures no unexpected material drift or lost potency.

    Open packaging only when ready for use has helped prevent both waste and handling loss, since Direct Fast Black GF reacts quickly with atmospheric moisture if left exposed. Accidental spillage, a real concern on busy shop floors, cleans up easily with water and mild detergents; but quick, thorough clean-up prevents slip hazards and lingering dust which sometimes can interfere with other colors in multi-shade runs.

    Plant managers appreciate straightforward waste management. Unused Direct Fast Black GF, when handled properly, can re-enter the dye cycle as an addition rather than being discarded. This incremental recycling, tracked lot by lot, reduces material loss and stabilizes the cost per dye run. High shelf stability from closed packaging means less stock-out risk and more predictable procurement cycles, especially for large-volume end users.

    Supporting a Transition to Greener Dyeing

    Shifting regulations and new buyer requirements push the chemical industry to cut environmental impact. Direct Fast Black GF, with its efficient fiber uptake and low salt requirements, helps dyers lower their waste generation. Water treatment facilities linked to large mills express concern about colored effluent and downstream sludge build-up. By using a dye that leaves behind lower colored residue, dyehouses spend less treating discharge, making the process more sustainable.

    Certifications and third-party audits have become common as buyers ask more about compliance before placing orders. Sharing detailed test records and traceable supply codes builds confidence with procurement teams anxious about origin control. Direct Fast Black GF products leaving our plant are always traceable back to the batch, raw inputs, and production date. We help customer compliance teams produce transparent evidence during audit season—no guesswork, no blind spots.

    Though Direct Fast Black GF works mainly with traditional cellulosic fibers, we maintain ongoing tests with blended and recycled substrates. Some global brands mix recycled material into their fabric supply lines and expect new dyes to perform as reliably as legacy products. As the textile world transitions, we adapt Direct Fast Black GF so that new substrates—recycled viscose, modal, or bamboo content—receive the same depth, resistance, and reliability as before.

    Comparing Process Costs and Reliability

    Production managers constantly compare dye price per kilogram against reprocessing and off-shade penalties. A less expensive black dye sometimes tempts buyers, but real-world results show many low-cost alternatives fail colorfastness in commercial washers or flat-screen printers. With Direct Fast Black GF, corrections are rare. Fewer mistakes drive cost savings not captured on a simple purchase sheet: less fabric rejection, smoother production cycles, and fewer customer claims add up across thousands of meters.

    In export-heavy sectors, consistency under varied washing protocols and climate differences is crucial. Problems often arise from process changes made to cut immediate costs, like switching from Direct Fast Black GF to a substitute without pilot batch tests. Avoiding this pitfall gives export teams confidence—buyers at the other end receive fabric within tolerance, free of streaking or color migration complaints.

    Every kilo of Direct Fast Black GF shipped from our warehouse meets not just technical data sheets, but a supply promise made in-house. We do not outsource random blends or cut corners for short bookings; the integrity of each lot is checked before it ever leaves our doors. Our approach, honed over decades of factory experience, supports a strong feedback loop with end-users.

    Responding to Industry Trends and Looking Forward

    The dye market continues to evolve as fiber blends, fashion trends, and equipment technologies develop. Our Direct Fast Black GF stands ready for tomorrow’s stricter ecological standards, new machine types, and higher speed productivity. Investment in research ensures our manufacturing adapts, so our process improvements translate directly into reliable results on the shop floor.

    Clients who visited our plant, from local textile startups to transnational fabric giants, report that performance in small hand dye baths translates up to full-scale production. This reflects careful attention at every manufacturing step, not just a reliance on formulas printed in technical manuals. When a challenge arises—unexpected batch results, color drift, or machine compatibility—our technical team reacts from real floor experience, not call-center scripts.

    Sometimes the smallest adjustment—changing charge order, revising water pH, or choosing a different dispersant—makes the difference between flawless runs and costly rework. We document every solution, check every failed batch in post-mortems, and share those improvements across our client base.

    Why Experience Matters in Direct Dye Manufacturing

    In a competitive market full of generic solutions, experience at the production line matters. We have seen firsthand that Direct Fast Black GF maintains its character over time in global markets because the manufacturing process never stands still. Real improvement happens in response to the sharp eyes of practical dyehouse operators, not just lab results. Long-term partnerships are built on advice, troubleshooting, and process insight, not guesswork or imitation. Direct Fast Black GF reflects both proven chemistry and real-world production learning, earning its place as a trusted choice for deep, reliable black in textile dyeing.

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