Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing admin@sinochem-nanjing.com 3389378665@qq.com
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Acid Blue 62

    • Product Name Acid Blue 62
    • Alias New Methylene Blue N
    • Einecs 207-073-5
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
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    Specifications

    HS Code

    187701

    ProductName Acid Blue 62
    C.I.Number C.I. 62045
    CASNumber 4368-56-3
    MolecularFormula C16H10N2Na2O8S2
    MolecularWeight 472.37
    Appearance Dark blue powder
    Solubility Soluble in water
    DyeClass Acid dye
    Application Textile dyeing (wool, silk, nylon)
    LightFastness Moderate
    ChemicalCategory Anthraquinone dye
    MeltingPoint Decomposes
    pHRange 2 - 5 (in solution)

    As an accredited Acid Blue 62 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Acid Blue 62 is packaged in a 25 kg fiber drum with a secure inner polyethylene liner, clearly labeled for safe handling.
    Shipping **Shipping Description for Acid Blue 62:** Acid Blue 62 is typically shipped as a solid dye packed in tightly sealed, clearly labeled containers or bags to prevent moisture contamination. It should be transported in accordance with local chemical regulations, avoiding exposure to heat, and handled with appropriate safety measures to prevent spills and environmental release.
    Storage Acid Blue 62 should be stored in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers and reducing agents. Keep the container tightly closed and protected from moisture and direct sunlight. Ensure proper labeling and avoid sources of ignition. Use appropriate personal protective equipment when handling to prevent skin and eye contact.
    Application of Acid Blue 62

    Applications of Acid Blue 62 in Industrial Manufacturing

    As a direct dye with high affinity for cellulosic fibers and select protein textiles, Acid Blue 62 serves as a critical colorant across regulated downstream sectors. Drawing from our manufacturing expertise, the following scenarios detail focused, substance-specific uses and process requirements in industrial production environments.

    1. Textile and Garment Dyeing (Cellulose Fiber Processing)

    Acid Blue 62 remains a primary coloring agent in dye-houses specializing in wool, silk, and polyamide blends, as well as viscose and certain mercerized cotton applications where clear blue shades and wash fastness are essential. Dyeing operations utilize the direct batch or continuous dyeing method, specifically in high-temperature exhaust and pad-steam systems equipped to ensure maximum fixation and shade consistency. Precise formulation is guided by fiber type, liquor ratio, and targeted color strength, demanding careful process control in both pre-scouring and post-dye rinses to comply with sector colorfastness metrics and effluent discharge standards.

    Industry compliance standards

    • OEKO-TEX® Standard 100
    • ZDHC Manufacturing Restricted Substances List (MRSL)
    • REACH Regulation (EC) No 1907/2006 - Annex XVII for dyes
    • GB/T 7573 (China) — Determination of pH value of textile products

    Typical usage ratio

    • 0.5% – 4% owf (on weight of fiber), adjusted by required depth; deeper shades require higher concentrations within recommended exhaust parameters

    Downstream process integration

    • Direct dosing into dyeing machines during main liquor circulation phase after wetting-out, typically after first filling and pH adjustment

    Final product types

    • Dyed wool fabrics and yarns for fashion apparel
    • Viscose scarves and blended socks
    • Polyamide swimwear linings
    • Silk ties and accessories

    2. Paper Manufacturing (Surface Dyeing and Internal Coloring)

    In specialty and conventional paper industries, Acid Blue 62 enables distinct tinting in coated, crepe, and tissue grades where direct blue hues are needed. Mills incorporate the dye during wet-end addition or onto surface sizing stations, balancing color uniformity with tight controls to avoid bleed and meet food contact and packaging ink migration requirements. Our clients report stable chromatic intensity and pH compatibility critical for premium communication papers and decorative napkin products.

    Industry compliance standards

    • EN 646:2018 Testing of Colour Fastness of Paper and Board
    • FDA 21 CFR 176.170 — Components of paper and paperboard in contact with aqueous and fatty foods
    • ISO 187 (Paper – Conditioning for testing)
    • Blue Wool Scale (ISO 105-B01) for lightfastness

    Typical usage ratio

    • 0.02% – 0.1% dry basis, depending on degree of shade and furnish type; final dosage may vary based on base paper brightness

    Downstream process integration

    • Added directly to stock preparation tanks for internal coloration, or into size press solutions for surface dyeing before drying sections

    Final product types

    • Blue tinted printing and writing paper
    • Decorative tissue napkins and serviettes
    • Colored filter papers
    • Gift wrapping papers

    3. Leather Finishing (Dyeing and Drum Coloring)

    Acid Blue 62 provides high coverage and tone clarity in drum dyeing and surface spray finishing of chrome-tanned and vegetable-tanned leathers, delivering color stability through subsequent finishing steps. Its molecular structure enables deep penetration and even surface fixation essential for premium footwear, automotive interior, and luxury accessory manufacturers. Operators integrate the colorant post-neutralization, with dosage based on hide thickness and finish type to achieve batch-to-batch uniformity and maintain compliance with restricted substance directives.

    Industry compliance standards

    • ISO 11640 (Leather – Colour fastness to rubbing)
    • LWG (Leather Working Group) Restricted Substance List
    • REACH Annex XVII - Substances of very high concern
    • EN ISO 17075 (Chromium VI content)

    Typical usage ratio

    • 0.3% – 2% based on shaved weight for drum dyeing; surface shading applications typically require lower ratios

    Downstream process integration

    • Dispersion in drum during rotating phase after washing and before fatliquoring; adjusted for split/buffed grades during finishing sprays

    Final product types

    • Full grain and suede leathers for luxury handbags
    • Footwear upper leathers
    • Leather goods for automotive interiors
    • Finished bookbinding leathers

    4. Ink Manufacturing (Water-Based and Flexographic Inks)

    Industrial ink producers use Acid Blue 62 for water-based, flexographic, and some screen-printing formulations where high tinctorial strength and solubility are necessary for substrate penetration and print sharpness. The colorant’s stability in neutral to slightly acidic aqueous systems allows reliable dispersion during pigment grinding and millbase preparation, supporting compliance with printing quality assurance requirements and end-use safety for packaging and stationery sectors.

    Industry compliance standards

    • ISO 2836:2021 — Printing inks — Resistance to solvents and chemicals
    • Swiss Ordinance on Materials and Articles in Contact with Food (SR 817.023.21)
    • EuPIA (European Printing Ink Association) Exclusion Policy
    • REACH regulatory compliance

    Typical usage ratio

    • 1% – 5% (by weight of total ink formulation); adjusted for opacity, viscosity and print target substrate

    Downstream process integration

    • Dispersed into millbase during pigment dispersion step; diluted prior to final let-down with additives and resins

    Final product types

    • Water-based flexographic inks for corrugated packaging
    • Screen printing inks on non-woven textiles
    • Writing inks for pens and markers
    • Industrial marking paints

    5. Detergent and Cleaning Formula Coloring

    Acid Blue 62 finds established use in coloring household and industrial detergents, where product appearance cues user expectations and ensures batch recognition. The dye’s formulation compatibility with surfactant blends, builders, and fragrance oils ensures color stability during manufacturing and shelf storage. Blending occurs during the late liquid compounding stage or dry mixing for powder variants, and dosage is tightly controlled for visual aesthetics while meeting labeling and consumer safety directives.

    Industry compliance standards

    • EU Regulation (EC) No 648/2004 - Detergents Regulation
    • US EPA Safer Choice Standard
    • IFRA Standards for perfumed products
    • SABS 1828/1853 (Hygiene requirements for detergent manufacturers)

    Typical usage ratio

    • 0.001% – 0.02% (w/w), adjusted for hue intensity and transparency; higher concentrations for concentrated gel variants

    Downstream process integration

    • Metered addition after final surfactant solubilization and prior to filling and packaging; for powders, incorporated during final blending before granulation

    Final product types

    • Blue-tinted liquid laundry detergents
    • Automatic dishwashing powders
    • Multi-purpose cleaning liquids
    • Toilet rim blocks and tabs
    Free Quote

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    Certification & Compliance
    More Introduction

    Acid Blue 62: Insight from the Manufacturer

    As manufacturers of Acid Blue 62, we have spent years refining our production process to meet demanding standards set by the textile and paper industries. Our focus lands squarely on purity, consistency, and steadfast supply. Over the years, Acid Blue 62 has earned loyal followers for its reliable color profile, easy solubility, and compatibility with a range of substrates. Working at scale, our operations have shaped a deep understanding of the challenges end users face — from batch-to-batch color drift to water quality variation and shifting compliance rules.

    Model and Specifications Matter to Daily Users

    Our Acid Blue 62 carries the well-recognized C.I. 63810 number, but more importantly, each shipment leaves our site after hands-on batch confirmation. On a chemical level, this dye is an anionic, water-soluble powder suited for acid dye applications. Color strength holds steady; our color index specification offers a balance between intense blue-violet hues and a full-bodied, deep shade. Granulation and particle distribution remain tightly controlled thanks to in-house milling and sieving. This translates to reduced clumping during solution prep and a smooth strike in aqueous baths. With a purity above 97 percent, contaminants don’t creep in to disrupt tone or lightfastness.

    Acid Blue 62 appears as a dark blue powder with pronounced violet tones when seen under sunlight and artificial light. Our customers detail how this clarity of shade avoids the muddy undertones common with inferior blends. Manufacturers who dye wool or nylon—be it yarn, tow, or cut fiber—prefer the crispness of this dye. They can trust the strength per gram and work more efficiently with dosing. Titratable percentage is kept accurate batch to batch, making large-scale processes like beam and jig dyeing more predictable.

    Production Decisions Affect Color Quality

    Unlike trading houses that only resell, we operate every step, starting with raw material synthesis. This puts us in a position to oversee pH control throughout the reaction stages, both in the diazotization of the arenes and during coupling. Acidity at specific steps makes a wide difference in color purity and intensity; inconsistent manufacturing leads to side products that throw off the violet-blue shade. We invest in reverse-osmosis washing steps, which strip away excess salts. High salt presence distorts hue, leads to ring marks, and promotes hydrolysis in wool dyeing. These details shape day-to-day results on our customers’ dye lines.

    Many of the newer mills and workshops now demand full traceability for every bag of Acid Blue 62 they use. Our quality log ties batch numbers to reaction parameters — like time, pressure, and temperature in the coupling vessel — not just for audits, but to quickly diagnose unexpected results. Customers need to keep their own end-game in mind: no off-shade sweaters reaching overseas shelves due to upstream mistakes.

    Acid Blue 62 at Work: Example Applications

    Acid Blue 62 finds its greatest demand among wool worsted spinners, carpet manufacturers, and technical paper makers seeking a vibrant yet wash-durable blue shade. Acid dyestuffs like this one share structural similarity—sulfonic acid groups boost water solubility—but Acid Blue 62 stands apart for its affinity to protein fibers and tolerance for a variety of auxiliary chemistries. In wool, it produces a solid, deep blue under neutral or mildly acidic conditions, avoiding the “greening” seen with some other acid blues.

    We routinely work with yarn processors who run both exhaust and continuous processes. In exhaust dyeing, our product demonstrates a rapid initial uptake, which means less time wasted and better leveling in banding-prone goods. In continuous applications, for example, in high-speed pad-steam lines running wool-polyester blends, Acid Blue 62 holds up to the heat and pressure. Mills also rely on it to overdye shaded lots or correct tone in reactive and acid blend jobs. They use the dye at strengths ranging from pale tints for suiting materials to heavy dosages in felt and rug material, all with color yield remaining even. Many papermakers employ Acid Blue 62, thanks to its controllable bleed and low interaction with metal ions in process water. The dye performs well in both surface sizing and direct pulp coloring without mucking up the runnability or fiber integrity of the paper.

    Consistency Beats Uncertainty: Manufacturing Insights

    Running a synthesis lab versus a blending operation shows a difference in control. As manufacturers, we avoid batch variability by sticking close to our raw material supply chain and adjusting protocols with each incoming shipment. Certain lots of aromatic amines, which start the production of Acid Blue 62, carry minute levels of trace impurities. Left unchecked, these introduce off-odors or cause the dye to fade unevenly. We run both HPLC and TLC checks, not just to tick boxes but to safeguard downstream users. Achieving genuinely consistent quality isn’t simply a function of state-of-the-art reactors or centrifuges; it takes repeated investment in people and analytic routines. We keep third-party auditors in the loop and maintain both local and international certifications around heavy-metal content, azo-break test, and colorfastness.

    On the shipping floor, our focus turns to packaging and transit. Moisture causes Acid Blue 62 powder to cake, impacting how it disperses once it reaches a dye house. Each drum gets lined, sealed, and stickered under controlled humidity. Regularly, customers come back to us with requests to modify packaging for easier dosing or size adaptation — these tweaks streamline their own workflow and strengthen our collaborative relationships.

    Comparing Acid Blue 62 to Other Dyes

    Dye houses looking to choose among acid blue compounds weigh choices for exact shade, wash fastness, and fiber affinity. Acid Blue 62 sets itself apart from dyes like Acid Blue 25, Acid Blue 185, and Acid Blue 113 in several key ways. Acid Blue 25 delivers a more turquoise note but reveals weaker light stability on wool and can bleed readily with sweat. Acid Blue 113 sits closer to the green spectrum, which makes it less suitable for producing rich, deep navy or violet blues. Acid Blue 185, while vivid, shows lower buildup in continuous dyeing, resulting in more waste. Acid Blue 62’s spectral curve promises a denser, fuller tone without tipping purple. Customers often remark that our product resists discoloration from hard water minerals and retains vibrance after repeated wash cycles, making it the safer choice in countries with diverse water profiles or stricter regulations.

    Acid Blue 62 also proves amenable to shade adjustment. Technicians can shift the hue with yellows or secondary blues and still keep color fastness acceptably high. The molecule’s affinity to amide linkages in wool and nylon outperforms many generic acid dyes, delivering superior levels in exhaust systems at moderate acid pH. This means less retouch work and fewer production stoppages. Technical service teams at mills often cite the repeatability they achieve with Acid Blue 62 as a reason to standardize their recipes, especially in apparel runs where shade batching costs real money.

    Usage Tips: From Synthesis to Dye House

    We have learned through firsthand troubleshooting that water chemistry impacts color strength. Users working with high-chloride or alkaline water see muted color take. We recommend using softened or RO water when feasible, and we supply dosing adjustment charts for varying bath compositions. Bringing this sort of support to customers cuts out unnecessary troubleshooting and helps prevent waste. Our technical team has visited wool dye houses where operators manually adjust pH every few hours, looking for consistent take. With reliable raw Acid Blue 62, they spend less time correcting and more time actually running barrels.

    Most mills operate with batch tanks ranging from a few hundred liters for specialty lots to tens of thousands for regular commercial runs. For accurate metering, our granule size helps minimize static sticking and ensures the dye dissolves quickly. We calibrate concentration so dye house operators settle into a predictable workflow — for instance, they can dose 1g/l for pastel effects or push the range up for deep navy shades without introducing solubility problems.

    Residual chemical safety always concerns both producers and users. We manage synthesis to curb free amine residue and regularly test lots for regulated contaminants such as aromatic amines and heavy metals. This helps customers qualify for ever-tightening standards in the EU, US, and Japan. Mills shifting from older recipes appreciate that switching to compliant Acid Blue 62 can preempt supply headaches when audits come through.

    Challenges from the Manufacturer’s View

    Maintaining a stable supply of Acid Blue 62 doesn't mean simply producing enough volume to fill orders. It means keeping the quality line steady through global raw material fluctuations, regulatory updates, and evolving client requirements. The supply chain for the needed input chemicals faces disruptions from energy pricing, environmental checks, and shipping bottlenecks. We respond by contracting long-term with trusted partners and keeping safety stocks on hand. Communication with mills becomes essential — their schedules often dictate our own order timing for months ahead.

    Global moves toward environmental stewardship demand tighter controls in effluent management. Acid Blue 62, like all synthetic dyes, places a burden on water systems if not handled properly. We pursue synthesis improvements to curb byproduct generation and recycle process waters. Our R&D team trials new catalyst systems and batch protocols to cut down on difficult-to-treat organic content. Downstream customers looking to minimize wastewater treatment demands benefit from such progress, often relaying field data back to refine our approach further.

    From the start, working directly with customers worldwide, we recognize regional demands for certifications, like OEKO-TEX and ZDHC MRSL. These marks represent more than marketing — they guarantee floors for toxin levels, heavy metal absence, and respiratory safety in factories. As the actual manufacturers, we hold production responsibility in-house rather than pushing it through third-party blenders. When new limits pass for banned amines in Europe or light fastness minimums in North America, we take responsibility for verification, using only in-house tested results before reaching the market.

    Supporting Better Results Down the Line

    From the manufacturer’s side, supporting customers doesn’t end once a pallet leaves the warehouse. Mistakes in dye application can quickly turn into monetary losses. End users trust our guidance on storage, shelf-life, and how best to pre-mix slurries for lab dips and scale runs. Whether mills favor open-vat, jig, or package dyeing, they use Acid Blue 62 to enhance their color palettes. We encourage regular system cleans with neutral detergents to prevent scale buildup, since even minor residues can alter how Acid Blue 62 distributes across a bath.

    Some competitive products arrive blended or diluted to stretch batch value — but lack transparency about additives or inert fillers. We manufacture Acid Blue 62 with a single-minded focus on purity and batch documentation. Every barrel, sack, or pail carries an analytic report, not just for peace of mind but as a practical tool when something unexpected crops up in production. For complex blends and deep shades, we routinely advise on synergistic partners to balance fastness and minimize migration, sharing methodologies refined in our own test labs.

    Building Solutions for Industry Challenges

    Legacy mills upgrading equipment, or young companies just starting, both look for answers tailored to their actual conditions. Our approach as manufacturers combines process expertise with open dialogue. When operators see uneven take or shade drift, our product and support staff work together to resolve any root issue, whether it’s improper pH management, incompatible levelling agent, or even a batch anomaly that slipped through.

    We constantly invest in updating our equipment and analytics to deliver dye solutions that raise the bar. Our work with high-shear mixing and adaptable granulation means faster dissolution and better integration with automated weighing systems. Even as market pressure rises for just-in-time delivery, we prioritize making every batch as consistent as the last — a goal easier spoken than achieved without a manufacturing base.

    Industry responsibility hangs heavy in both production and environmental domains. Wastewater treatment remains a shared concern; customers often approach us not just for dye, but for process optimization tips. We support improvements by offering fast-dissolving lots, reducing clean-out water use, and suggesting compatible dispersants that lead to less run-off color and easier filtration. These incremental gains across hundreds of dye houses add up.

    Ongoing Commitment and Perspective

    Our philosophy as a chemical manufacturer comes down to active problem-solving. Acid Blue 62 remains among the more widely trusted dyes because of the balance between color reliability and real-world application flexibility. Each improvement in process technology gets reflected straight back to our customers, whether in repeatability, regulatory compliance, or operational speed. Instead of theoretical claims, our commentary draws from daily interactions with both high-volume manufacturers and craft-sized workshops. Without first-hand understanding of their challenges, small tweaks at our end risk missing the mark.

    What sets Acid Blue 62 apart, to those who depend on it, is less about abstract specifications or branding. Reliability in use, insight into application quirks, and ongoing modernization of our synthesis process shape results on the floor. In the end, that’s what counts to every user — whether crafting luxury wool suiting, durable nylon carpeting, or vibrant technical papers. As manufacturers, sharing our on-the-ground experience helps cultivate new efficiencies and address obstacles as they arise, making Acid Blue 62 a practical foundation for today’s and tomorrow’s dyeing needs.