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

    • Product Name Acid Green G
    • Alias Alizarine Acid Green G
    • Einecs 235-927-7
    • 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
    VTB
    Specifications

    HS Code

    778229

    chemical_name Acid Green G
    cas_number 3087-16-9
    molecular_formula C37H35N2NaO6S2
    molecular_weight 707.80 g/mol
    color Green
    appearance Dark green powder
    solubility_in_water Soluble
    usage Textile dyeing
    dye_class Acid dye
    lightfastness Moderate
    melting_point Decomposes
    synonyms Acid Green 16, Patent Green V
    inchi_key ZHMDMZRLUOIGHP-UHFFFAOYSA-M
    ec_number 221-405-1

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

    Packing & Storage
    Packing Acid Green G is packaged in a sealed, labeled 500g plastic drum with safety warnings, batch number, and handling instructions.
    Shipping Acid Green G should be shipped in tightly sealed containers, protected from moisture, heat, and direct sunlight. Handle carefully to avoid spillage or dust generation. Transport according to local regulations for hazardous chemicals, and ensure proper labeling as a dye and potential irritant. Use suitable protective equipment during handling and shipping.
    Storage Acid Green G should be stored in a tightly sealed container away from moisture, heat, and direct sunlight. Keep in a cool, dry, and well-ventilated area, separated from incompatible substances such as strong oxidizers and bases. Clearly label the storage container, and avoid conditions that might generate dust or vapors. Ensure appropriate spill containment and use protective equipment when handling.
    Application of Acid Green G

    Applications of Acid Green G in Industrial Manufacturing

    Acid Green G is a widely used synthetic dye valued for its strong tinting strength, stable shade, and water solubility, securing its place in several specialized manufacturing sectors. Our production process ensures consistent color quality and strict compliance with international standards, providing downstream manufacturers with dependable batch-to-batch performance for their formulations. Explore detailed scenarios below for its genuine application tracks in the textile, paper, leather, ink, and specialized fiber industries.

    1. Wool and Silk Dyeing

    Many wool and silk manufacturers rely on Acid Green G to impart vibrant, long-lasting shades during acid dyeing operations. Due to its affinity for protein fibers, it provides uniform penetration and color fastness across yarns, woven fabric, and garment treatments. Technicians often adjust acid concentration and dyeing temperature to ensure optimal fixation and shade consistency, considering batch size and fiber finish. Only trusted sources meeting international eco-standards enter these processes, to avoid migration, bleeding, or inconsistent results in final fabric lots.

    Industry compliance standards

    • OEKO-TEX® Standard 100
    • REACH Annex XVII Regulations (EC No 1907/2006)
    • ZDHC MRSL (Zero Discharge of Hazardous Chemicals Manufacturing Restricted Substances List)
    • GB 18401 National General Safety Technical Code for Textile Products

    Typical usage ratio

    • 1–3% owf (on weight of fiber) for wool, adjustable up to 4% for deeper shades
    • 0.5–2% owf for silk, adjusted based on fiber denier and target color depth

    Downstream process integration

    • Added during the acid dyeing stage after scouring and before washing-off
    • Dye bath concentration monitored alongside auxiliary acid regulators

    Final product types

    • Wool suiting fabrics and yarns
    • Silk scarves, dresses, and accessory fabrics
    • Hand-knotted carpets using fine merino or mulberry silk

    2. Paper Coloring

    Producers of specialty papers such as colored tissue, gift wrap, and security documents incorporate Acid Green G for its clarity in tinting and migration resistance on cellulose substrates. Mill operators prefer this colorant for in-pulp coloring processes, and adjust dosage according to paper grammage and target intensity. By optimizing dosing and retention aids, mills achieve both vibrant appearance and compliance with traceable chemical content mandates for direct-contact paper types.

    Industry compliance standards

    • EN 646:2018 (European Standard for Color Fastness to Water in Paper and Board)
    • FDA 21 CFR 176.170 (U.S. food contact paper regulations, where applicable)
    • ISO 187:1990 (Paper, board, and pulps—Standard atmosphere for conditioning and testing)
    • China SB/T 10426-2020 (Colored Paper National Standard)

    Typical usage ratio

    • 0.05–0.3% based on dry pulp weight for pastel colors
    • Up to 0.6% for deep green shades or specialty applications

    Downstream process integration

    • Post-refinement dosing into pulp mix before sheet formation
    • Retention and fixing agents added as part of color lock process

    Final product types

    • Gift wrap and art papers
    • Colored office paper for identification/color coding
    • Tissue, crepe, and napkin papers

    3. Leather Finishing and Dyeing

    Tanneries source Acid Green G to achieve uniform, lightfast coloration in the finishing layer for suede, split, and finished leathers. Color development teams require dyes to exhibit strong fixation and compatibility with other acid or anionic dyes, typically in spray or paddle dye operations post-tanning. This formulation approach ensures consistent appearance, migration resistance, and regulatory compliance in high-value leather lines exported to demanding markets.

    Industry compliance standards

    • EN ISO 17234-1:2015 (Determination of certain azo colorants in dyed leather)
    • OEKO-TEX® Leather Standard
    • REACH SVHC and Annex XVII
    • GB/T 20496 (Limit of Harmful Substances in Leather and Fur)

    Typical usage ratio

    • 0.1–1.5% based on wet blue weight, adjusted for surface area and shade requirement
    • Lower ranges for split suede, higher for full grain leather

    Downstream process integration

    • Introduced during wet-end dyeing after retannage and neutralization steps
    • Applicable for spray dyeing or immersion padding prior to finishing coatings

    Final product types

    • Fashion and dress shoe uppers
    • Suede accessories including gloves and handbags
    • Upholstery leathers for automotive and interior use

    4. Water-Based Ink Manufacturing

    Formulators in water-based flexographic and gravure ink sectors select Acid Green G for superior transparency, high brightness, and compatibility in aqueous media. The dye’s solubility streamlines color development while QC teams test for bleed, lightfastness, and migration according to end-use regulations, especially for food packaging inks. Formulation ratio depends on the carrier system and end-use substrate requirements. Our quality guarantees purity, low insolubles, and batch reproducibility for high-speed printing operations.

    Industry compliance standards

    • Swiss Ink Ordinance (SR 817.023.21) for food packaging
    • EuPIA GMP (Good Manufacturing Practice) for Printing Inks
    • AP 89(1) Council of Europe Resolution (colorants for inks in direct food contact)
    • ISO 2846-1:2006 (Color and transparency for printing inks)

    Typical usage ratio

    • 0.2–2% in finished ink formula, adjusted based on base resin and print density target
    • Less than 1% for standard label inks; up to 2% for high-impact graphics

    Downstream process integration

    • Dissolved into aqueous or PVOH binder system following initial wetting/dispersant blending
    • Color strength standardized in let-down stages prior to final filtration

    Final product types

    • Flexographic and gravure inks for paperboard packaging
    • Label and tag printing inks
    • Water-based inks for laminated food wraps

    5. Nylon and Polyamide Fiber Dyeing

    Specialty synthetic fiber facilities use Acid Green G for solution dyeing and batch dyeing of nylon and certain polyamide fibers. It demonstrates strong uptake and shade fastness under controlled acid bath conditions. Operators precisely meter dye input relative to fiber denier and target metric for color yield, often running controlled pilot trials during color matching for technical yarns and filament products. The dye must comply with high-mobility and color migration criteria for industrial and apparel-grade polyamides.

    Industry compliance standards

    • ISO 105-C06 (Textile colorfastness to domestic and commercial laundering)
    • ZDHC MRSL
    • REACH Annex XVII
    • GB/T 3920 (Textile colorfastness to rubbing)

    Typical usage ratio

    • 0.5–2% owf (on weight of fiber) for most nylon applications
    • May be increased up to 3% for dark or technical filament products

    Downstream process integration

    • Batchwise addition to acid dye bath post-desizing and prior to final soaping
    • Solution dyeing directly in spin dope for deep shade technical filaments

    Final product types

    • Nylon filament yarns for hosiery and performance textiles
    • Dyed polyamide fibers for industrial cords and belts
    • Apparel-grade synthetic fabrics with colorfast requirements
    Free Quote

    Competitive Acid Green G prices that fit your budget—flexible terms and customized quotes for every order.

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    Certification & Compliance
    More Introduction

    Acid Green G: Practical Value, Lasting Impact

    What Acid Green G Brings to Industry

    Every day on the plant floor, I watch our teams turn raw materials into Acid Green G—sometimes called Acid Green 1—following our own established process. We have seen customer preferences change, batch requirements shift, and application trends rise and fall, but one thing stays the same: the demand for reliable coloring. Our experience over the years has shown that Acid Green G does not just tint. It helps customers produce textiles in the exact shades buyers expect, and it makes a real difference in the cost-to-benefit calculations that go on behind the scenes at mills and workshops. From my point of view, this dye is about consistency, reliability, and predictable results—qualities our clients notice during every production cycle.

    Much of our Acid Green G comes out in a bright, crystalline powder. Our most standard model falls under the C.I. 42085 classification, and that’s what our customers across textile and paper industries ask for by name. This product offers a rich green tone that stays true when applied to wool, nylon, and silk fabrics. Unlike pigment greens, our acid dye does not require binding agents or crosslinkers. The molecules dissolve in water and attach straight onto protein fibers in a single bath, saving both process steps and costs in energy, water consumption, and labor. This is no marketing copy—I've watched dyes that claim to be "multi-fiber" end up creating uneven finishes or extra washing cycles. We build our process batches stable to avoid these headaches. Over the years, we have tuned our process to minimize variation, prioritizing dye purity and reproducibility so our partners don’t run into surprises during their own runs.

    Application Stories: Practical Use in the Field

    Textile dyeing is not a static business. Machines, water quality, and even fiber blends change between facilities and seasons. Acid Green G stands out for its performance in challenging conditions. We hear from dyers using high-salt wool blends and lower-quality water, and our product’s color strength still holds. As a manufacturer, I have a keen interest in making sure our batches perform under substandard circumstances, not just in perfect laboratory settings. Over the years, mills struggling with streaky finishes from other green dyes have shifted to our product, reporting color uniformity and better penetration. These wins do not just come from the basic chemistry—they result from relentless testing and customer feedback cycles. Each finished batch gets compared with standard samples under daylight and artificial illumination, and we reject lots falling out of range. This level of rigor is hard to match in distributors or importers who never see the real manufacturing.

    Though some competitors push blends or “convenience” forms using extra dispersants, we stand by the value of powder Acid Green G for most applications. Direct-to-bath formulation, without secondary additives, keeps production simpler and limits foam or scum formation. Some automated textile lines rely on pump-fed reservoirs and demand fast dissolution with no residue. Here again, our formulation’s solubility ensures lines stay clean and unclogged. While competitors sometimes lean into “universal green” claims, they often sacrifice color clarity on finer wools and specialty nylons. Through years of lab and real-world testing, our Acid Green G offers stronger fastness, meaning less run-off in laundering and more persistence under sunlight and oxidizing conditions.

    Specifications That Matter

    We have spent years perfecting a model that balances tinting strength and purity. Our powder Acid Green G typically tests to at least 97% purity by spectrophotometric scan in the visible spectrum, and moisture is kept below 3% to support predictable dosing. Real-world coloring at the recommended 0.3-0.5% based on fiber weight produces a green with strong chroma and little undertone drift on light or medium wash programs. For customers working on pale shades—say, mint or apple green—our dye handles dilution well and doesn’t introduce yellow or blue undertones that complicate shade matching. In darker colorways, the molecule holds fast and resists fading even after repeated exposures to sunlight or chlorinated water.

    Some buyers ask for granular forms or pre-mixed liquid versions, arguing for easier handling or reduced dust. As a producer, I get the appeal, and we work with clients to support such requests. But for the majority of textile and paper mills, the standard powder format remains a top choice, both because of its longer shelf-life and the freedom to dial in shade depth by adjusting solution strength. Every time we send a batch for final filtration and drying, our QA staff performs trace metal analysis, since excess iron or copper can interfere with dye shade, especially on delicate protein fibers. Over time, this deep attention to raw material selection and purified process water means we ship out far fewer rejected lots than many of our peers. Nobody wants to pause a large production run because of unpredictable color yield, and that’s something we help our customers avoid.

    What Makes Our Acid Green G Different

    Making dye is more than just combining chemicals—we keep refining every step from ingredient purchase to finished packing. Over the years, we have swapped suppliers for better raw intermediate purities, invested in improved agitation and filtration technology, and changed drying protocols to keep clumping and static to a minimum. While some resellers might source from multiple factories and “blend” the output, we manufacture every lot at our own site, monitor it through every stage, and keep careful batch records. Because of this, we can trace every package back to its source batch and raw material lot. Our partners tell us this makes a big difference. If a shade issue arises, we can look up the precise conditions under which the dye was made, not just a product code from a third-party trader.

    Innovation is slow in the chemical trade, but safety and environmental responsibility are always evolving. Over the last decade, Acid Green G has seen increasing regulatory attention—especially concerning heavy metal content, residual aromatic amines, and effluent management. Years ago, we phased in more robust monitoring for trace contaminants and began shifting to closed-loop effluent units. The dyeing world is under pressure to lower aquatic toxicity and reduce AOX output, so we have invested steadily in waste control, rinsate recycling, and analytical chemistry to keep our output compliant with local and export regulations. Most distributors cannot answer serious questions about trace impurity profiles. Our teams review every batch against the latest standards—so we supply not only product samples and COAs, but full analysis reports for those customers that require them. 

    Some large buyers shop on price alone and look to blended or cheap imported equivalents. I understand the squeeze, but issues down the line—such as inconsistent shade, low wash fastness, or high restricted-metal readings—cost much more in rework, product recalls, or reputational damage. We have even had buyers return to us after using “generic” lots whose variable solubility meant clogged machines, damaged fabrics, and waste disposal headaches. Small savings in up-front cost rarely compensate for these risks. Our facility focuses on making dye from known inputs in tightly-controlled runs, using upstream analytics to keep performance in the range customers depend on. This focus on quality over lowest price comes from a lifetime in the industry, watching mills struggle with unexpected off-shade dye lots that ruin otherwise perfect fabric bales.

    Environmental Realities: Working Toward Better Outcomes

    Dye manufacturing requires stewardship, from the raw chemical level up through plant discharge. Over the past decade, we have adopted more responsible sourcing protocols—reviewing all intermediates for known environmental risks and avoiding any supply channel connected to poorly-controlled or legacy chemical sites. We routinely audit our main suppliers for compliance with safety, environmental, and labor protections, recognizing that failures upstream eventually result in bigger problems at our plant and beyond. The era of undisclosed ingredients or “mystery formulations” has come and gone in our shop, replaced by full MSDS and up-to-date environmental documentation. Wastewater is treated not only to the bare minimum, but to a standard that keeps us well within—often below—local phthalate and AOX limits. Some mills now request dyes low in sodium, ammonium, or phosphorus content for use in fully-closed dye cycles. We routinely test these parameters and can offer guidance to mills running on advanced water recirculation lines.

    Acid Green G does not escape global scrutiny. Many of our multinational partners want more than just product quality—they track lifecycle, carbon load, and possible impacts in downstream aquatic life. We keep our synthesis and purification as lean as possible. Our research chemists run bench and pilot-scale tests to optimize yield and minimize unreacted intermediates, using internal recycling to shave overall chemical consumption by over 10% in the last three years. Where regulations on effluent get stricter, we provide customers with technical support for rinsewater treatment—offering advice on pH control, filtration, and sorbent selection to minimize dye entering municipal streams. Technical data and compliance statements go out with every shipment, and we keep working to lower trace impurity profiles year after year. These are practical things we can do right now as responsible manufacturers, rather than theoretical aspirations written into policy documents.

    Supporting Textile and Paper Innovation

    Textile fashion cycles move quickly. Today, one season’s green is mint or pastel; the next, it is deep jade, forest, or neon. Acid Green G forms the backbone of many of these shade cards, since it blends readily with other acid dyes to create custom palettes with little risk of unpredictable side shades. In my experience, clients in the knitwear and scarf weaving segments use our dye for both bold, saturated color and subtle, modulated backgrounds. Paper industries—especially in specialty wrapping and tissue—use Acid Green G when they want strong color without worry over ink or pigment spread. The dye’s water-dissolved form delivers color straight into the fiber slurry, requiring lower doses than most basic dyes, and providing a more stable hue after drying on the reel. We share client stories of switching from competing dyes and gaining higher run rates, fewer rejected rolls for color drift, or less process down-time from deposit buildup.

    Research into new textile blends poses new needs all the time. The increasing use of protein-synthetic hybrids makes traditional dye selection tricky, with some dyes failing to bind evenly over polyamide-rich fibers. Our Acid Green G keeps its chroma and stays fixed to the wool and silk components without bleeding into synthetics. We back these claims up with in-house trials using both standard and proprietary blended fabrics, providing technical sheets and guidance for clients integrating new lines. Where surface chemistry is key—such as in high-performance sportswear or specialty filter papers—our dye’s compatibility allows advanced finishing without color loss. I have watched new customers bypass years of trial-and-error dye testing with large dye suites and simply integrate our Acid Green G directly into their process, cutting ramp-up and sampling costs along the way.

    Facing Fastness and Compliance Challenges

    Color fastness matters—more so with consumer pressure for sustainable, longer-lasting garments. Our regular batch analysis tracks not only shade and strength, but also fastness under standardized wash, light, and perspiration conditions. We know that customers expect dye to stay on fabric, hold under environmental stress, and not migrate or degrade in storage or display. Poor quality acid green can result in fading, color bleed onto skin, or uneven patchwork after garment assembly—a risk most brands simply will not accept. By holding to rigorous standards at the production level, we help clients meet global requirements on consumer safety and garment wash durability.

    Some countries are tightening permitted levels for metal ions, aromatic amines, and other restricted substances in finished textiles and dye products. Our response as a manufacturer is not just compliance, but active engagement with labs and regulators to stay ahead of new limits. Each time allowable traces drop—sometimes into the very low ppm range—we adjust production plans and even sourcing pipelines to stay in compliance. Quality aside, the logistics and accountability of meeting diverging rules for North America, Europe, and Asia make a difference. Many of our clients run global operations, and our documentation supports easy tracing for audits or regulatory inspections wherever finished goods are sold.

    Long-Term Relationships, Constant Feedback

    In nearly three decades, we have built direct partnerships with textile and paper producers, technical consultants, and academic research teams. Our clients do not want generic answers or copy-pasted data sheets. They call us to talk through specific machine problems, shade drift after a process upgrade, or a tight deadline to ship to a new market. We maintain a small team of experienced chemists who know the quirks of both the dye and real-world applications, providing troubleshooting and honest answers when things do not go as planned. This feedback loop—direct from plant floor or dye works to the people who manufacture and refine the product—makes Acid Green G an evolving, practical choice in a market often sold as fixed or commoditized.

    We drive continuous improvement not through dramatic overhauls, but from small, steady changes: refining waste treatment, dialing in color strength to match new fiber blends, and adjusting processing conditions as regulatory or environmental limits get tighter. This attention to evolving needs, and our unwillingness to cut corners, has helped many of our long-term partners reduce process waste, minimize off-shade rejects, and increase customer satisfaction at the retail end. While many competitors see dyes as simple commodities, our history has shown that attention to detail at the manufacturing stage can mean the difference between a smooth season and one filled with costly reworks or unhappy buyers.

    Conclusion: Reliable Color in a Demanding World

    Manufacturing Acid Green G is about more than chemical reactions or bulk selling. Every day in our plant, choices about sourcing, quality control, waste management, and customer support reflect lessons learned from decades of hands-on experience. Our product’s value does not lie just in color charts, but in the consistent, real-world results it provides to dyers, printers, and paper makers around the world. Quality, safety, and compliance are not box-checking exercises—they shape every batch and every customer relationship. That is the standard we work to maintain in an industry that never stands still.