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HS Code |
597848 |
| product_name | Acid Green E |
| other_names | Acid Green 1 |
| chemical_formula | C37H35N2NaO6S2 |
| molecular_weight | 690.81 g/mol |
| appearance | Dark green powder |
| solubility | Soluble in water |
| color_index_number | 10020 |
| application | Textile dyeing (wool, silk, nylon) |
| CAS_number | 19381-50-1 |
| class | Acid dye |
| lightfastness | Moderate |
| melting_point | Decomposes before melting |
| pH_range | 3-5 (optimal for dyeing) |
| toxicity | May cause irritation upon contact |
| storage_conditions | Keep tightly closed and store in a cool, dry place |
As an accredited Acid Green E factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Acid Green E is packaged in a 500g sealed plastic drum, labeled with hazard warnings, product name, and manufacturer information. |
| Shipping | Acid Green E should be shipped in tightly sealed containers, away from incompatible substances, moisture, and direct sunlight. Ensure labeling complies with local and international regulations. Transport under cool, dry conditions with adequate ventilation. Handle as a hazardous material, adhering to guidelines for safe chemical shipping and using appropriate protective equipment. |
| Storage | Acid Green E should be stored in a tightly closed container in a cool, dry, well-ventilated area away from incompatible substances such as strong oxidizing agents and bases. Protect it from moisture and direct sunlight. Ensure the storage area is equipped with appropriate spill containment. Clearly label the container and restrict access to trained personnel using suitable personal protective equipment. |
Applications of Acid Green E in Industrial ManufacturingAs a direct producer of Acid Green E, we supply consistently specified material for major industrial processes where reliable performance, compliance, and color strength are essential. Below, we outline the key downstream manufacturing scenarios where our product is actively used worldwide, providing specification-based data for each field. 1. Textile Dyeing: Wool, Silk, and Polyamide FibersTextile manufacturers across wool, silk, and polyamide sectors utilize Acid Green E for its fastness on protein and synthetic fabrics, as well as its reproducible shade consistency in batch and continuous dyehouses. The product supports vibrant, level coloration in exhaust and continuous dyeing, with shade adjustments possible during process control for custom hues. Textile plants prioritize compliance and exact formulation to meet export requirements, and benefit from the high solubility and stable dispersion of this dye for large-scale yarn, fabric, and garment finishing. Industry compliance standards
Typical usage ratio
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Final product types
2. Leather Dyeing: Chrome and Vegetable Tanned GoodsThe leather finishing industry relies on this dye for uniform coloration of chrome-tanned and some vegetable-tanned hides, valued for its brilliant shade and penetration on full grain and corrected grain leathers. Acid Green E offers compatibility with fatliquors and retanning agents, which ensures color uniformity through flexing, milling, and finishing steps typical in upholstery, garment, and automotive leathers. Producers use precise coloration to meet batch-to-batch and lot-to-lot consistency as audited by downstream QC teams premised on global export standards. Industry compliance standards
Typical usage ratio
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3. Paper Coloring: Tissue, Art, and Specialty PapersPaper mills incorporate Acid Green E during wet-end or size-press stages to achieve permanent coloration of tissue, crepe, artist, packaging, and specialty papers. The dye’s strong affinity for cellulose fibers and its resistance to fading under UV exposure make it particularly suitable for high-value items such as colored tissues, gift wraps, and technical filter papers. Producers focus on dosage calibration and dispersion to avoid bleed or unevenness and maintain compliance with international heavy metal and colorant migration limits for consumer and technical paper grades. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
4. Ink Manufacturing: Water-Based and Flexographic Printing InksPrinting ink factories formulate Acid Green E into water-based flexographic and gravure systems, capitalizing on its solubility and brightness for applications on paper, films, and labels requiring vivid greens with controlled transparency. The dye supports precise, stable pigment blends for custom shade matching tailored to customer graphics and brand requirements. Quality control teams monitor color purity, migration, and viscosity parameters in line with product safety and ecological compliance for large volume runs in consumer packaging and printed decor. Industry compliance standards
Typical usage ratio
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5. Detergent and Cleaning Agent ColorationDetergent and household chemical producers use Acid Green E to impart a distinctive color for liquid, gel, and powder formulations, helping customers with branding differentiation and functional concentration marking. The dye withstands formulation pH and active surfactant systems, retaining a stable chroma and minimal migration in concentrated laundry and dishwashing products, subject to health and environmental regulations for home and institutional cleaning markets. Industry compliance standards
Typical usage ratio
Downstream process integration
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Competitive Acid Green E prices that fit your budget—flexible terms and customized quotes for every order.
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Anyone who works with dyes knows the landscape changes fast—demands shift, regulations tighten, and expectations grow more precise. Acid Green E (also called Acid Green 25 by some in the industry) has kept its place on the production line for good reason. On our factory floor, we’ve watched trends come and go, but this dye continues to stand out for textile and paper operations where color intensity and consistency make all the difference.
What sets Acid Green E apart? Start with its vibrant, eye-catching shade. Our customers in the textile sector notice its ability to deliver striking green hues on wool, silk, and nylon. We process batches in the 25kg and 50kg fiber drums for increased convenience to higher-volume users. The product flows as a powder for straightforward weighing and preparation, not as a liquid solution that complicates transportation and storage. This form has helped us optimize shelf life and reduce spoilage, a detail that comes from our own factory data over years of production.
Our on-site QC team has honed a tight process: each lot of Acid Green E is checked for color value and water solubility before dispatch. The absorption value must meet a specific standard—compromises bring costly rejects during dyeing, so we test rigorously. We filter every consignment for particulates that would block fine mesh and disrupt high-speed jet dyeing systems. These steps came about from lessons learned during long production runs, not from generic industry templates.
The real proof for Acid Green E comes on the dyehouse floor. In our feedback calls, mill operators tell us about smooth uptake on wool yarns, even when temperature and pH fluctuate. This resilience comes from fine-tuned molecular weight and purity, supported by a consistent synthesis process. Experience tells us it holds color fastness better than many basic blends on the market. We’ve performed hundreds of lab washes using ISO standard test methods to validate what we and our customers see in production.
Fastness isn’t just technical jargon—mills need to meet repeatable wash and light-fast ratings for big-brand buyers. If a dye runs or fades in the final product, entire shipments can be lost, hurting everyone in the supply chain. Acid Green E’s stable results save buyers from rework and lost revenue. That’s where our investment in precision synthesis pays off. We use only certified raw materials—after some early missteps with second-grade aniline sources, we found quality in always starting with clean, high-purity feedstocks.
We’ve been in countless discussions about effluent and environmental impact. Acid Green E’s unique structure makes it more manageable to remove from wastewater by standard treatment systems, especially compared to older dyestuffs with poorly characterized breakdown products. By listening to feedback from regional compliance auditors, we’ve optimized our in-house purification so that the dye leaves behind fewer trace residues. It’s not perfect—no commercial dye is—but this step forward is born out of practical experience, not just marketing promises.
In recent years, more buyers have demanded proof of low heavy metal contamination and non-toxic breakdown products. Years ago, we faced a major setback when a regulatory review flagged a competitor’s product for excessive chromium content. At the time, the whole sector suffered reputation damage. We took it as a lesson and introduced additional checks in our synthesis and filtration steps. Acid Green E from our line consistently reads below the detection limit for regulated metals and aromatic amines—our internal audits run quarterly, and the spectrometric reports are matched against official standards.
Our quality manager and safety team don’t cut corners. We require every raw material supplier to sign off on an extended materials statement—not just a generic batch analysis. Once, after an unscheduled inspection, our early detection process caught a contaminated drum before blending, saving us thousands of dollars in recalled product. It’s this eyes-on-every-step approach, instilled by years of manufacturing experience, that’s kept our Acid Green E respected by long-time mill clients.
Making Acid Green E isn’t a matter of following a recipe out of a textbook. Over the years, we’ve found that functionally identical dyes from different manufacturers can behave very differently in use. The trick lies in controlling the reaction environment—pH, temperature ramp, and the purity of sulfonic acid groups make all the difference for stability and dye uptake. In one year, we tracked rejects sent back by three different customers who had tried cheaper, off-brand versions. They encountered off-effects and inconsistent dyeing when using rivals, which vanished after going back to our lots processed on equipment we maintain to a stricter standard.
A few tried switching to generic suppliers from distant regions, chasing lower prices. Reproducibility problems clogged their machines with precipitate or left goods with uneven color. We analyzed recovered cloth and cross-checked against retained sample batches. The difference tracked back to minor contaminants introduced by loose synthesis control—a lesson for anyone who thinks “any green dye will do.”
Above all, changes to input quality ripple through the entire chain, something our operations team learned firsthand. Each time a key intermediate’s purity dipped, indicators and dyeing performance slipped. Our chemists recalibrated purification steps, investing in cleaner reactor setups and continuous automated monitoring to shut off the cook when critical parameters hit their marks. Our engineers back any claims with hard data: side-by-side performance tests in both controlled and production environments. It’s not a theoretical promise—it’s a result we see each time rolls of finished fabric meet or exceed thresholds set by international brands.
Dyehouses working with wool, silk, and polyamide see Acid Green E as a staple. The dye enters at the strike phase, dissolves quickly under neutral to slightly acidic baths, and binds well to protein fibers. For our long-standing clients, this means cutting down on dye addition cycles and avoiding excessive salt loading—less resource waste, smoother operation.
Buyer feedback from the carpet sector stands out in our records. These mills push higher liquor-to-goods ratios and stress test dyes under aggressive continuous-run schedules. Acid Green E maintains deep, rich color over repeat batches, where other products fade subtly but cost time and money in shade corrections. The dye also shows good dispersibility, which came as a surprise in one project with an automotive textile supplier who pushed the material through high-speed jets. Their machines ran fewer clean-out cycles than with other makes. These details matter on the shop floor, more than glossy data sheets or certifications alone.
In the paper industry, certain grades of colored stock take Acid Green E well. We’ve run extended pilot programs with specialty paper companies seeking true, lasting greens for stationery and packaging. Rapid dissolution avoids surface speckling, allowing for an even cosmetic finish critical in presentation-grade stocks. We worked side-by-side with their technical teams, adjusting pH, reaction times, and application techniques to solve finish irregularities. These real-world collaborations have shaped how we deliver technical support beyond mere product dispatch.
Running a chemical factory means facing up to every kilogram of waste produced. For years, effluent quality kept us awake at night. Acid Green E helped drive an upgrade of our waste treatment line: we worked with process chemists who tailored flocculant dosages and retention times for our specific dye loads. Output water now meets strict benchmarks and periodic outside audits. The improvements didn’t happen overnight—hundreds of tailored iterations built piece by piece, using real test data, not borrowed assumptions.
Increasing regulatory and buyer pressure led us to publish more data on organic residue breakdown and aquatic toxicity, even before some governing bodies made it mandatory. This originated from early pilot complaints that some competitor dyes made it through standard wastewater filtering, risking local waterway discoloration. We committed to in-house batch analytics for degradation, and our product now leaves behind fewer color fragments and persistent residues after physico-chemical and biological treatment.
To further reduce impact, we reshaped our container filling station. Waste powders or spills are vacuum-sealed and recovered, not washed away. Over the last two years, these changes cut our dye waste footprint by about 18 percent. These small, steady steps grow out of facing each problem with the people who run the machines and see every batch through—not from sitting in a distant office planning pipelines without touching the shop floor.
Many suppliers can boast of a green dye on their price sheets, yet the results often diverge in practice. Acid Green E’s standout properties are the result of running side-by-side trials—and seeing how it performs when pressure is on. Customers switching from basic acid green or solvent green dyes quickly report the difference: stronger absorption, brighter color tone, and less muddying when mixing shades. Some have stuck with us for over a decade, pointing to repeatable results across years of evolving specification sheets.
Handling safety sets our product above cut-rate alternatives. On a hectic shift, minor differences in powder consistency can cause inhalation or compaction accidents. We control both particle size and flow behavior, streamlining the weighing and batching steps. Downtime from handling mishaps or powder bridging wastes staff time and output quotas, so we made practical changes in our grinding and blending routines to foster a safer, cleaner workspace.
Other acid greens in the market with less controlled manufacturing sometimes leave a higher ion-loading or inconsistent pH, tripping up automated dosing systems. Mill operators repeatedly call out Acid Green E for its predictability in dosing machines and its forgiveness to minor operator error—a quality that comes from years of making tweaks in our own workshops.
Buyers keeping a close eye on security will also notice that our labeling and packaging have evolved with counterfeiting risks. QR-based tracing and tamper evidence aren’t just claimed on websites; they are confirmed in spot-purchase audits. This grew out of hard-learned experience when improperly tracked containers compromised supply integrity, costing customers both money and trust.
Manufacturing Acid Green E isn’t only about putting color in a drum and shipping it out the door. Our relationships with buyers often turn into two-way dialogues. In-person troubleshooting happens more often than many think. Technicians spend hours visiting client dyehouses, reviewing their process parameters and advising on dosing, pH, and mixing strategies tailored to their workflow. Over the years, shared fixes for stubborn faults and shade mismatch have led to improvements both in our own batches and their final goods.
Clients challenge us with tougher requirements every cycle. One recent project pushed the dyeing limits on a tough-to-penetrate nylon substrate. Instead of quoting a stock answer, our R&D and technical support team visited the site, collected samples, and ran parallel tests. Small parameter shifts uncovered subtle ways to optimize uptake and reduce waste. We blend this hands-on knowhow into updated recommendations and product improvements. It’s not sales talk—it’s the result of years working shoulder-to-shoulder with the people who turn dye into finished goods.
Open communication has led to safer working environments and better batch tracking. By directly analyzing our clients’ day-to-day challenges and sharing our batch traceability systems, we’ve tightened response times for product recall or clarification. Early in our production history, slow communication and poor record-keeping meant tracking a defect could take a week—now, it’s hours. These workflow improvements didn’t just benefit us; they cut bottlenecks for buyers too, helping them hit deadlines for demanding customers.
Every year, a new round of rules lands on the table—from consumer safety regulations to environmental discharge standards. Operating a dye plant means adapting in real time, not just waiting for outside audits to expose problems. When new EU guidelines flagged concerns about persistent contaminants, we reevaluated every step in our process to weed out legacy weaknesses. Acid Green E kept pace with these changes only by active investment: cleaner input streams, smarter containment, better analytics of effluent and product.
Our technical team members spend time at regulatory workshops and industry forums to forecast which trends are just talk and which will force a real pivot. This habit, rooted in daily manufacturing, keeps Acid Green E ahead of emergent compliance hurdles and lets clients rely on uninterrupted supply and documentation. We don’t chase the cheapest production routes if they create unmanageable risk or fall afoul of best-practice guidelines—our record and trackability help clients sleep soundly, knowing shipments conform with both disclosed and as-yet unreleased rules.
Regulations also touch raw sourcing. We turned down multiple feedstock suppliers who couldn’t prove long-term traceability, even if their offers looked attractive. That discipline didn’t come from a handbook but from direct experience with how quickly a supply chain stumble can endanger real people’s jobs and reputation. Acid Green E’s runbook gets reviewed every quarter by teams who know every valve and tank in our plant—this is stewardship born of long service, not outside consultants.
We face the reality of frequent supply, process, and technology challenges. Sometimes a favored raw material source vanishes from the market or a new analytical technique flags trace impurities we didn’t spot before. We respond by revalidating core process steps and scaling up pilot runs in our own facility. Once, a new detection method revealed slight off-grade results in a sequence of Acid Green E output; prompt recalibration and hands-on troubleshooting by our chemists saw the right color and purity values restored within two shifts.
Problems cross borders—European and Asian customers both encountered new performance demands for stricter color fastness in sports textiles. We fine-tuned the diazotization and coupling reactions to raise performance and sent skilled teams to oversee field trials. Results fed right back into our continuous improvement cycle. The same logic carried over when a North American paper mill found a residue pattern during calendaring—joint examination and repeated testing traced the issue to a supplier’s packaging dust, not the dye, but the solution—shared process cleanup guidance—became part of both our and their site protocols.
Acid Green E, in our view as the manufacturer, is the product of close attention to practical realities. Its strengths come from experience, not just formulation: improved synthesis, hands-on client feedback, and living up to evolving expectations for safety, performance, and compliance. Green color may look simple, but the real story sits in how each batch is made and supported. Real-world challenges, regulatory shifts, and partnership with users drive us to keep refining. We’ve learned, across years and continents, that real reliability comes not from glossy brochures but from hard-won results—measured in bales of wool, meters of finished cloth, cartons of colored paper, and the trust between our teams and customers who know what matters most.