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C.I.26050

    • Product Name C.I.26050
    • Alias Rhodamine B
    • Einecs 247-368-0
    • 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

    640065

    color_index C.I.26050
    chemical_name Basic Red 1
    synonyms Rhodamine 6G
    cas_number 989-38-8
    molecular_formula C28H31N2O3Cl
    molecular_weight 479.01 g/mol
    appearance reddish-orange crystalline powder
    solubility_in_water soluble
    melting_point approx. 230°C (decomposes)
    uv_vis_absorption_max 526 nm
    usage dye for textiles, inks, and biological stains
    emission_maximum 555 nm
    lightfastness moderate
    pH_range 3-7
    toxicity potentially harmful; handle with care

    As an accredited C.I.26050 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing C.I. 26050 is packaged in a 25 kg fiber drum with a secure, tight-sealing lid and clear hazard labeling.
    Shipping C.I. 26050, also known as Acid Red 52, should be shipped in tightly sealed containers, protected from moisture and direct sunlight. It must comply with local and international transport regulations. Label packaging clearly, and handle with appropriate personal protective equipment to prevent exposure during transit. Store in a cool, well-ventilated area.
    Storage C.I. 26050, also known as Rhodamine B, should be stored in a tightly closed container in a cool, dry, and well-ventilated area away from incompatible substances such as strong oxidizing agents. It must be protected from light, heat, and moisture. Proper labeling is essential, and it should be kept away from food and drink to avoid contamination.
    Application of C.I.26050

    Applications of C.I.26050 in Industrial Manufacturing

    As a manufacturer of C.I.26050, we focus on enabling its performance within core industrial sectors that rely on high color fastness, chemical compatibility, and regulatory alignment. Below, we detail its implementation in downstream markets, highlighting compliance, formulation strategy, production flow, and finished goods.

    1. Textile Dyeing for Cellulose Fibers

    C.I.26050 demonstrates color stability and wash durability on cotton and regenerated cellulose, delivering consistent shade depth in fashion fabrics, workwear, and home textiles. Our material meets strict industry color fastness benchmarks, supporting brands that target export-grade clothing and technical textiles with robust process know-how. Integration into direct dye processes occurs at precise liquor ratios to ensure dye exhaustion and fixation required by international textile houses.

    Industry compliance standards

    • OEKO-TEX® Standard 100
    • ZDHC MRSL (Zero Discharge of Hazardous Chemicals Manufacturing Restricted Substances List)
    • ISO 105 series for color fastness testing
    • REACH Annex XVII (EU chemical safety)

    Typical usage ratio

    • 0.5%–4% on weight of fiber (owf), adjusted by shade depth, substrate, and liquor ratio

    Downstream process integration

    • Added to the dye bath during jet dyeing, pad–steam, or exhaust dyeing at 80–98°C; dosing controlled for shade accuracy before salt and alkali addition

    Final product types

    • Piece-dyed cotton fabrics
    • Printed bed linens
    • Dyed denim and workwear textiles
    • Fashion garments requiring high wash and sweat fastness

    2. Paper Coloring – Tissue, Specialty Board & Packaging Grades

    Leading paper mills select C.I.26050 for achieving stable coloration in hygiene tissues, specialty packaging boards, and art paper, owing to its high process stability and resistance to brightness degradation during wet-end chemistry. Our technical team supports integration into bulk or surface application stages, balancing dosage against reactivity with sizing agents and fillers to minimize bleed and maximize printability.

    Industry compliance standards

    • BfR XXXVI (Germany—papers and boards for food contact)
    • EN 646 (Color fastness to bleeding—paper and board)
    • FDA 21 CFR 176.170 & 176.180 (Indirect food additives: paper and paperboard components)

    Typical usage ratio

    • 0.03%–0.25% dry dye based on pulp weight; adjusted for shade, target brightness, and filler loading

    Downstream process integration

    • Metered into wet-end or size-press formulations; process may include fixation aids or charge control systems to reduce dye run-off during sheet formation

    Final product types

    • Colored facial tissues, napkins, and towel paper
    • Decorative art boards and specialty packaging liners
    • Solid-color foodservice papers
    • Gift wraps and stationary sheets

    3. Leather Dyeing—Automotive Upholstery and Footwear

    Producers of high-performance leather goods leverage C.I.26050 in drum dyeing and finishing for automotive interior hides, premium furniture upholstery, and fashion leathers. Our material’s compatibility with anionic retanning agents and controlled migration behavior ensures uniform penetration, crucial for downgoods specified by safety and durability standards.

    Industry compliance standards

    • Automotive OEM specifications (BMW GS 97017, VW PV 3900)
    • EN ISO 11640 (Color fastness to rub for leather)
    • AFIRM RSL (Apparel & Footwear International Restricted Substances List)
    • LWG (Leather Working Group) compliance

    Typical usage ratio

    • 0.1%–1.2% owf on split or crust weight, modified for thickness and absorption profile of the substrate

    Downstream process integration

    • Dispersed in aqueous dye bath during wet-end drum dyeing, post-neutralization and before fatliquoring; application managed to promote even uptake and prevent surface streaking

    Final product types

    • Pigmented automotive seat leather
    • Full-grain dyed foot and bag leathers
    • Furniture upholstery hides
    • Glove leathers requiring migration control

    4. Water-Based Inkjet Inks for Digital Printing

    Ink formulators utilize C.I.26050 to deliver stable and vivid coloration in water-based inkjet systems for paper and textile substrates. Its particle size, solubility profile, and surface charge meet critical requirements for digital print compatibility, allowing for efficient nozzle performance and minimized clogging during high-speed runs. Quality control ensures compliance with colorant safety and print permanence parameters.

    Industry compliance standards

    • EN 71-3 (Safety of toys—migration of certain elements)
    • ASTM D6848 (Pigment-based aqueous inks—inkjet)
    • Swiss Ordinance SR 817.023.21 (Printing Inks for food packaging)
    • ISO 2846-1 (Color and transparency for inkjet inks)

    Typical usage ratio

    • 0.15%–4.5% dye in ink concentrate, adjusted by target color value, printhead technology, and intended substrate absorbency

    Downstream process integration

    • Added during dispersion or compounding stages of aqueous ink manufacturing; filtration to <0.45 μm before blending with ink vehicle; batch color standardization follows

    Final product types

    • Inkjet printer cartridges for office and home use
    • Wide-format textile digital printing inks
    • Packaging and label digital inks (food and non-food)
    • Graphic art inkjet ink sets

    5. Agricultural Seed Coating Dyes

    Select agricultural coating suppliers employ C.I.26050 to impart color marking and identification in seed treatment processes, enhancing lot traceability and correct sowing identification. Its compatibility with polymeric binders and low aquatic toxicity aligns with global regulations governing treated seed export and on-farm application, facilitating visual quality control during production and planting cycles.

    Industry compliance standards

    • OECD 301 (Biodegradability)
    • US EPA 40 CFR Part 180 (Tolerance for residues—seed colorants)
    • EU Regulation (EC) No 1107/2009 (Plant protection product regulation)
    • ISO 16140 (Microbial safety of treated seeds)

    Typical usage ratio

    • 0.02%–0.15% w/w in liquid or powder seed coating formulations, tailored to seed size and mandated minimal coloration

    Downstream process integration

    • Incorporated during polymer-binder dispersion before application on rotary drum treaters or pan coaters, ensuring uniform visual coverage without affecting germination rates

    Final product types

    • Colored corn, soybean, cereals, and vegetable seeds
    • Seed treatment products for commercial agriculture
    • Certified seed lots for export and regulated markets

    6. Detergent and Cleaning Product Colorants

    Leading manufacturers of liquid and powder detergents use C.I.26050 for functional color coding in both laundry and institutional cleaners, where clear differentiation between product grades and application types is required. Color strength, alkaline stability, and low staining to hard surfaces allow integration into challenging surfactant systems, maintaining clarity and stability through aggressive dilution and storage cycles.

    Industry compliance standards

    • EU Regulation (EC) No 648/2004 (Detergent Regulation)
    • US EPA Safer Choice Standard
    • ISO 4316 (Color measurement of cleaning products)
    • GHS Classification—Labelling of chemicals

    Typical usage ratio

    • 0.005%–0.10% in finished formulation, modulated for concentrate/dilute product lines and visual coverage targets

    Downstream process integration

    • Dosed into base mixture during the cold or hot compounding phase; post-blending color correction may be performed prior to packaging

    Final product types

    • Multi-purpose liquid detergents
    • Powdered laundry detergents and automatic dishwashers
    • Institutional surface cleaners
    • Disinfectant and bleach tablets
    Free Quote

    Competitive C.I.26050 prices that fit your budget—flexible terms and customized quotes for every order.

    For samples, pricing, or more information, please call us at +8615371019725 or mail to admin@sinochem-nanjing.com.

    We will respond to you as soon as possible.

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    Email: admin@sinochem-nanjing.com

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    Certification & Compliance
    More Introduction

    Introducing C.I. 26050: A Colorant Forged by Experience in Chemical Manufacturing

    Shaping Color with Precision and Reliability

    Bringing a coloring agent like C.I. 26050 to market always reflects years tied to reactors, close work with quality assurance, and adjustments made on the production line. Each batch carries the weight of that experience. C.I. 26050 stands as an organic pigment that manufacturers have relied on across a spectrum of applications. Our operations prioritize stability and purity at every step. Quality starts with raw materials, follows through synthesis and purification, and extends to tight controls on particle size and dispersibility. Modern facilities have to recognize variations between lots and minimize them. C.I. 26050 responds consistently, batch after batch. Users across coatings, inks, plastics, and textiles recognize this dependability, which supports tight timelines and smooth scale-up.

    Choosing Model and Specifications: Hard Lessons Shape Reliable Output

    Technical teams working in colorants see firsthand that a few small changes in synthesis often have outsized effects. With C.I. 26050, we monitor crystal structure, water content, and contamination down to fractions of a percent. As a result, this product achieves strong tinctorial strength and resistance to solvents. A typical powder specification focuses on robust hiding power and high thermal stability—qualities hard-earned through investment in filtration, precision drying, and strict environmental standards in the plant. After drying and grinding, the color index and shade remain stable whether processed into a masterbatch or dispersed in a water- or solvent-based medium. Many companies struggle to produce the finer grades needed for ink jet formulations; our process has been stress-tested to handle those needs.

    Real-World Application: Meeting Demands of Formulators

    Inke manufacturers usually push a pigment further than most: stability in alcohol and high-speed dispersing means batch failures cost real money. With C.I. 26050, print runs experience fewer color drifts and less clogging, even in high-turnover processes. In the plastics sector, heat cycles can degrade weaker pigments. Long-term trial data on C.I. 26050 show little migration or fading, and feedback from injection molding shops confirms a sharper, more repeatable output. Textile dyers report similar reliability, with fixed recipes surviving varied fabrics and water chemistries. Supporting these customers doesn’t end at the loading dock. Chemists on our team answer questions about rheology and compatibility, helping partners dial in the right loading for their unique equipment and product requirements. Decades on factory floors and in labs taught us to view these as partnerships, not one-off transactions.

    Comparing C.I. 26050 to Other Pigments: Nuances Only Insiders Notice

    Choosing among organic pigments involves practical tradeoffs. Some competitors offer similar hues with marginally lower prices, but their product may leave performance gaps when run at scale. C.I. 26050 typically displays better lightfastness and stronger color intensity in demanding applications. Lower-grade imports often cause downstream headaches—like poor filterability or unexpected haze in clear systems. Too often, unfamiliar sources skip some post-process cleaning steps, introducing batch-to-batch instability. Over decades, direct feedback has shown us users expect a stable supply and identifiable improvement in finished goods. Long-standing relationships with customers mean we pick up on these pain points quickly. Supply chain disruptions can cost trust built up over years. We’re not just selling a color; we’re standing behind every drum with technical support engineers who know the product’s manufacturing history.

    Environmental and Regulatory Issues: Practical Responsibility in the Field

    Industry shifts towards sustainable chemistry force real changes on plant floors. C.I. 26050 meets ever-tightening global standards, including reductions in heavy metals and improved handling protocols for effluents. Years ago, some common pigment precursors drew scrutiny for regulatory concerns. Our current process avoids these legacy chemicals. Regular audits and updates to wastewater treatment systems ensure runoff does not violate local or international standards. This comes from practical experience: missed compliance means costly plant shutdowns and loss of market access—not theoretical risks, but lived consequences. Product traceability means our partners can answer their own downstream audits without fear. We know shipping to Europe or Japan means a higher bar for purity, so every lot shipped supports documentation from raw material entry through final QA.

    Understanding Applications: A Direct Manufacturer’s Perspective

    Ink and paint chemists often reach out about pigment flow properties and reactivity during high-energy milling. We discuss particle size, surface treatment, and flocculation from a direct experience of seeing those processes in action. For plastics, extrusion temperatures and polymer compatibility decide pigment choice. In our own R&D, C.I. 26050 performs well in polyolefins, PVC, and polystyrene, maintaining its integrity at all typical molding and forming conditions. Our field engineers can draw on years of trial results and lab tests to help partners eliminate color bleed or uneven dispersion. Textile dyers ask for color fastness data, and we back up claims with performance comparisons tracked against industry standards. This level of support comes from a culture where floor supervisors and lab chemists trade information—not as siloed departments, but as a single team used to solving real-world production problems together.

    Batch Consistency: Lessons Learned on the Factory Floor

    Consistency never happens by accident. We keep legacy records on process runs and tweak parameters that others ignore. The dry blending stage, for example, often affects shade in subtle ways. Years with blenders and mills show that mechanical shear, not just chemical composition, can introduce off-tones or reduce dispersibility. Tracking these minor variables means we can assure every drum of C.I. 26050 meets customer targets: no sudden changes, no unexplained batch-to-batch drift. Stability matters, especially for buyers producing internationally recognizable brands. Painful experience has shown the cost of recall or waste linked to minor variation, so plant culture insists on over-testing rather than cutting corners on final release.

    Troubleshooting and Support: Experience Put to Work for Partners

    Anyone who has worked the late shift knows challenges come up during scale-up or plant trials. Color loading looks different on a lab sample than a full production run. We help partners interpret these shifts: adjusting dispersion protocols, identifying possible contamination sources, or recommending alternate mill types based on hard data. Over the years, relationships with end users have resulted in practical tweaks to our formula. For example, changes in resins or solvents used by coatings manufacturers required us to refine surface treatments on C.I. 26050, balancing better wettability with minimal impact on filtration. Our technical support comes from real manufacturing history—seasoned staff who have solved these issues themselves, not just read about them in literature or pulled from generic FAQ sheets.

    Industry Shifts: Sustainability and Changing Demands

    As a manufacturer, we see first-hand how market and regulatory pressure shape what ends up in our reactors. Twenty years ago, priority focused on color strength and price. Now, customers look for transparency with regard to raw material origin, carbon footprint, and lifecycle impact. Over several upgrade cycles, we moved to solvent recovery, energy-efficient dryers, and closed-loop water handling. C.I. 26050 ships with independent lab certification for every batch, including heavy metal content and solvent residue. We respond to requests for documentation supporting SVHC and RoHS compliance, not from a distance, but with details from our QA archives. Adapting to these requirements keeps us competitive without sacrificing product performance. Our partners rely on this openness when reporting to regulators, customers, or their own sustainability auditors.

    Global Supply Chains: Continuity Through Thick and Thin

    Over decades, market disruptions—natural disasters, supply interruptions, trade disputes—have rewritten supply chain assumptions. C.I. 26050’s raw material sourcing shifted over the years, always in search of more reliable or higher-grade precursors. Rather than gamble with spot suppliers, we maintain stable relationships, sometimes trading short-term price spikes for longer-term supply guarantees. Our customers see the payoff in unbroken production when global transport gets delayed: long-term contracts, reserved inventory, and regional storage all help buffer those shocks. Maintaining consistency, especially for pigments in food packaging or pharmaceuticals, remains a logistical challenge handled behind the scenes. But for formulation chemists and plant managers, what matters is the pigment shows up on time and works every time—no forced reformulation, no scrambling.

    Plant Investment and Technical Upgrading: Building Quality Day by Day

    Buildings and machines matter as much as formulas. Each processing line for C.I. 26050 reflects lessons learned from breakdowns and gradual upgrades. State-of-the-art milling, automated quality checkpoints, and in-line sampling have all become standard over years of reinvestment. Each improvement started with a challenge or a failure: a filter that blinded too early, a dryer that left uneven moisture. Addressing these means boots on the ground—engineers and operators meeting daily to trade insights and identify bottlenecks. As new standards for purity or performance arise, our teams invest not just to pass audits, but to make each production run smoother and safer. This hands-on, iterative process creates a pigment that proves itself in the field and the lab, not just on paper.

    Lessons from Feedback: A Manufacturer in Dialogue with Real Users

    Many changes to C.I. 26050 trace right back to partners sharing problems or needs that our R&D team hadn’t anticipated. Smaller particle size options came about thanks to ink jet manufacturers calling out printhead clogging. Adjusting paste viscosity and improving filterability happened because coatings customers wanted higher throughput and less machine downtime. This kind of two-way feedback takes time and mutual trust. It’s never just a question of “What does the specification say?”—it’s “What is your process? Where do things go wrong?” As a direct producer, these connections let us improve and evolve our product, making C.I. 26050 more flexible, robust, and easier to integrate into the widest range of finished goods.

    Knowing the Difference: Practical Experience Beats Catalog Claims

    Catalog descriptions rarely capture the reality of pigment performance under real conditions. We know from field trials that some competitors don’t run the raw material purity checks we do. Performance slip shows up as shade drift, viscosity swing, or rework at the customer’s plant. Other suppliers talk up short lead times or headline performance values, but the story on a factory floor is about consistency and reliability. C.I. 26050 demonstrates its difference in those moments when the pressure is on: tight deadlines, unexpected supply chain hiccups, or tough new environmental limits. Long-haul customers don’t judge on appearance but on the product’s track record under stress.

    Looking Ahead: Continuous Improvement as Standard Practice

    Rather than treat C.I. 26050 as a static offering, every production cycle builds on experience. Each year, lab staff and operators review test data and customer feedback, targeting incremental gains in strength, dispersibility, and environmental impact. Our plant teams run side-by-side comparisons with previous lots to guarantee improvements are real, not just theoretical. These changes benefit downstream partners. A small shift in particle morphology can increase productivity in high-speed presses or reduce filter maintenance. Over time, continuous investment in skills and equipment cements both quality and trust, setting C.I. 26050 apart in a crowded field.

    Rooted in Real Manufacturing: Why Direct Production Matters

    Acting as the origin manufacturer means accepting responsibility not just for the name on the drum, but for every variable involved: feedstock chemistry, reaction conditions, packaging, storage, and shipping. There’s no hand-off to a distributor or trader who might lose track of a shipping document or misinterpret end-use requirements. Quality assurance teams talk directly to plant engineers and end users. When a customer reports a challenge, the investigation starts with someone who worked the processing line, not an outsourced call center. This keeps improvement cycles short, honest, and practical. The knowledge gained from years of colorant production—handling thousands of tons, managing countless variations in demand, responding to every new standard or customer request—shapes a level of reliability that outsiders can’t simply replicate or resell.

    Solving Real-World Problems: Commitment That Runs Deep

    In the grocery store, the print shop, the polymer line, or the textile plant, finished goods depend on invisible details set in motion long before arriving at final form. Quality pigments like C.I. 26050 support that chain. Our contribution comes from staying hands-on with every stage, learning from each technical challenge, and refusing to compromise on consistency or transparency. Partnerships with manufacturers pull us further, as requests change, formulations evolve, and new sustainability requirements set the agenda. The best lessons seldom come from sales meetings—they’re found in the day-to-day work of meeting expectations, solving small problems before they become expensive ones, and investing for the long term. For those who live and breathe chemical manufacturing, color means more than just a shade chart. It represents reliability, commitment, and pride in every lot shipped out the door.