Products

Solvent Violet 49

    • Product Name: Solvent Violet 49
    • Alias: Rhodamine S
    • Einecs: 242-872-3
    • Mininmum Order: 1 g
    • Factroy Site: Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry: admin@ascent-chem.com
    • Manufacturer: Ascent Petrochem Holdings Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    576806

    Cas Number 509-34-2
    Molecular Formula C29H30N2O3
    Molecular Weight 454.56 g/mol
    Iupac Name 2-[4-(diethylamino)phenyl]-3-oxo-5-phenyl-7-(phenylamino)-2,3-dihydro-1H-indene-1-carbonitrile
    Appearance Purple powder
    Melting Point 167-169 °C
    Solubility In Water Insoluble
    Solubility In Organic Solvents Soluble in ethanol, acetone, and benzene
    Usage Dye for plastics, resins, and inks
    Light Fastness Moderate
    Ec Number 208-096-8
    Synonyms C.I. 60725, Violet 49, Sudan Violet 6

    As an accredited Solvent Violet 49 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Solvent Violet 49 is packaged in a 25 kg tightly sealed fiber drum with an inner plastic liner for moisture protection.
    Shipping Solvent Violet 49 is shipped in tightly sealed containers, protected from moisture and direct sunlight. It is classified as a non-hazardous dye but should be handled according to safety guidelines. Packaging conforms to international shipping standards to prevent leaks or spills, ensuring safe transit and storage during transportation.
    Storage Solvent Violet 49 should be stored in a cool, dry, and well-ventilated area, away from direct sunlight, sources of ignition, and incompatible materials such as strong oxidizing agents. Keep the container tightly closed when not in use. Use appropriate chemical-resistant containers and ensure all storage complies with local regulations to prevent contamination and ensure safe handling.
    Application of Solvent Violet 49

    Purity 98%: Solvent Violet 49 with purity 98% is used in plastics manufacturing, where it ensures consistent color strength and minimal impurities. Melting point 198°C: Solvent Violet 49 with a melting point of 198°C is used in fiber dyeing processes, where it provides thermal stability and reliable melting behavior. Particle size ≤5 µm: Solvent Violet 49 with particle size ≤5 µm is used in inkjet ink formulations, where it guarantees fine dispersion and sharp print resolution. Light fastness grade 6: Solvent Violet 49 with light fastness grade 6 is used in automotive coatings, where it provides long-lasting color retention under UV exposure. Solubility in ethanol 50 g/L: Solvent Violet 49 with a solubility in ethanol of 50 g/L is used in solvent-based marker inks, where it delivers rapid dissolution and uniform color application. Stability temperature 220°C: Solvent Violet 49 with a stability temperature of 220°C is used in high-temperature polymer processing, where it maintains chromatic integrity under extrusion conditions. Molecular weight 400.47 g/mol: Solvent Violet 49 with molecular weight 400.47 g/mol is used in colorant masterbatch production, where it ensures predictable dosing and homogeneous blending. Viscosity grade low: Solvent Violet 49 with low viscosity grade is used in liquid dye applications, where it enables smooth mixing and optimal flow characteristics. Oil solubility high: Solvent Violet 49 with high oil solubility is used in candle coloration, where it produces vibrant, evenly distributed shades without precipitation.

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    Certification & Compliance
    More Introduction

    Solvent Violet 49: Our Insight as the Manufacturer

    Understanding Solvent Violet 49 from the Workshop Floor

    When we talk about Solvent Violet 49, we're describing a colorant we’ve watched take shape through years of manufacturing. Our crew sees every step, from the start of raw material selection to the final rounds of testing. This colorant isn’t just a line on a product sheet for us; it’s the outcome of careful chemical processes and real people working to keep consistency day after day. Solvent Violet 49, chemically known as Basic Violet 3:1, gives a bluish-violet hue that’s become indispensable across multiple segments, especially printing inks and plastics.

    What Sets Solvent Violet 49 Apart

    Some folks compare it to other violet or purple solvent dyes, wondering if there’s really any difference beyond the shade itself. From our corner of the industry, it’s all about the stability and performance it shows under different processing conditions. Solvent Violet 49 offers deep coloring strength and sticks with good light fastness—meaning the color clings on unlike some alternatives that fade or bleed too early. This makes a real difference for products that sit on sunny shelves or experience repeated handling.

    Unlike other dye materials that break down under higher temperatures, we’ve built our Solvent Violet 49 to keep its structure when it runs through hot extrusion or molding cycles. Every batch must handle the demands of thermoplastics or the high-shear mixing of certain solvent-based ink systems. We know it’s common to run long print jobs or sustain polymer production lines for days—no one wants to shut down because the dye chemistry fails.

    Specifications We Stand Behind

    Let’s look at what you really get: Solvent Violet 49 is produced to a high level of purity, with the dye content typically measuring above 98% based on our own HPLC and spectral test records. Granule and powder forms keep things easy for both automated feeders and manual weighing. Particle size distribution is not simply a target—it’s a fact we measure batch by batch, since clumping or inconsistent flow causes trouble down the line. We keep moisture content low, because we've seen how even a small spike can gum up feeders or alter dispersion, especially in solvent media. Volatile matter and trace metal residues fall below tight limits based on our history with demanding plastic compounders.

    Through thousands of production hours, we’ve tweaked our own process to minimize dust, which always threatens operators and downstream product quality. Our closed, dust-controlled packaging technique is not just a sales pitch. Production staff pushed for this after years of seeing the impact of airborne dye on both yield and the working environment.

    Where Solvent Violet 49 Finds Its True Strength

    Ink manufacturers have trusted this dye for its power to produce sharp violet-blue shades in both offset and flexographic printing. Our sample archive shows that the tone and depth hold up even after weeks sitting on warehouse racks. Polyolefin and polystyrene compounders rely on Solvent Violet 49 for its ability to dissolve swiftly and color evenly, with less need for additional dispersion agents than some competitors. It melts in clean without clogging screens or leaving streaks, which anyone running a plastics line can appreciate.

    We’ve supported research projects exploring this dye in audio cassette shells, home appliance components, PET bottles, and synthetic fibers. Its solubility in a wide range of organic solvents—toluene, ethanol, butyl acetate, and even some glycol ethers—expands options for both formulation and process clean-up. After years of listening to feedback from ink chemists and polymer engineers, we know that versatility counts just as much as raw color strength.

    Comparison to Similar Dyes: Closer Than Appearance Alone

    Plenty of violet and purple dye products exist, and buyers sometimes miss what they give up with “similar” alternatives. Basic Violet 10—Solvent Violet 13—these sound interchangeable on paper. But in our day-to-day work, tiny shifts in their molecular structure alter how they interact with plastics and inks. Solvent Violet 49 remains more resistant to solvent attack, so it stands up in systems where exposure and migration are a risk. The same cannot be said for every violet dye we’ve encountered.

    We track customer trials, not just sales, and what stands out is that Solvent Violet 49 causes less shifting or bleeding when packaged next to other colorants. This is regular feedback from packaging converters and masterbatch makers, not only hearsay from the lab. It also shows up in light fastness test data, especially with outdoor plastics or long-cured inks. Other violet dyes may cost a little less up front, but our experience proves they often lead to more rework or scrap due to their weaker heat or migration resistance.

    Application Experience and Challenges We’ve Faced

    Some dyes come with steep learning curves, but Solvent Violet 49 keeps transfer rates and deposition in check for ink systems using alcohol, ketone, or aromatic hydrocarbon solvents. We’ve worked with customers who struggled to get colors to stick inside multilayer laminates or multiplex fiber systems. Our chemical team investigated solubility parameters and found this dye’s strong affinity for common resins like PVC, ABS, and PMMA solves those application roadblocks.

    The push for thinner films in packaging, plus trends toward higher-speed printing, add fresh challenges. Our product solves part of the puzzle with its high color density—formulators can dial back the dose, reduce final product weight, or shrink ink layers without losing saturation. On a practical level, this saves cost but also supports moves to lightweight packaging and sustainable design.

    Dependability through Consistent Manufacturing

    Nothing frustrates a production crew more than batch-to-batch drift in shade, tone, or dispersibility. We’ve refined our controls, from reactor temperature to filtration and blending, to keep Solvent Violet 49 on spec regardless of order size. Our techs catch deviations at early stages, long before final packaging, thanks to automated spectral tracking and old-fashioned visual screening. Years ago, we learned the hard way that unchecked variation leads to customer complaints, wasted resin, and a cascade of costly rework. Now, we hold every lot to the same benchmarks every time, so downstream users can trust what they receive month in and month out.

    This kind of stability proves essential for larger scale users, who may face enormous recall or scrappage costs over an off-shade batch. Short-run custom jobs benefit too, since color correction mid-run isn’t always possible. Our repeat customers in specialty plastics and gravure printing say this dependence allows them to plan, budget, and commit to their own customers with more confidence.

    How Regulation Shapes Our Manufacturing Pledge

    The past decade brought sharp increases in scrutiny for colorants touching food packaging, children’s goods, and consumer electronics. While Solvent Violet 49 rarely enters food-contact or medical streams, our plant runs its own impurity checks using modern methods against international standards. Regulatory shifts in the EU, North America, and Asia have all pushed us to identify and minimize residual amines, heavy metals, and unreacted starting material. We collaborate closely with third-party labs when required—not just ticking off compliance, but double-checking our own controls.

    Transparency doesn’t stop with a certificate. Customers sometimes run their own analytical testing, comparing our batches with historical data or other suppliers. We encourage it. Our ingredient disclosure documentation, as well as traceability for raw materials, is always ready for audit because we store every batch record for years on site. This is not merely risk management—it’s physical evidence of our long-term investment in both people and product.

    Environmental Responsibility and Workplace Values

    Modern chemical manufacturing faces growing expectations to manage waste and energy use at every turn. We’ve invested heavily in solvent recovery and closed-loop wash systems, which allow us to reclaim cleaning agents and process fluids. Every day, our team tracks how much waste solvent gets filtered and reused, then we examine routes to squeeze down “virgin” chemical consumption without sacrificing product quality.

    The same focus goes into process exhaust and water usage. We treat every liter of water involved in our dye manufacturing, returning it to utility standards or better. Not only does this meet local regulation—it upholds commitments to our neighbors and co-workers. Anyone who’s worked in chemical production knows the value of a safe, clean environment: respiratory protection, dust controls, and best practices for chemical handling are always our priority.

    We train every staff member, whether new hire or veteran, to understand not just the “how” but the “why” of our procedures. Incidents in the early days, though rare, became learning moments that led to tighter spill controls, more frequent PPE audits, and better cross-checking of equipment maintenance. We manufacture for the long haul, respecting the land, water, and people around us.

    Finding Solutions for Customer-Specific Needs

    Application needs always evolve. Over the years, process engineers, ink chemists, and plastics specialists came to us with issues ranging from migration into adjacent layers, to cloudiness or precipitation in solvent blends, to difficulties in dosage metering machines. Our approach is straightforward—listen to the customer, review the technical data, experiment with process tweaks or co-ingredient adjustments, and deliver small-scale samples for direct shop-floor evaluation.

    One common challenge centers around low-dosage coloring in high-value applications, where pigment overload introduces off-flavors or haze. Solvent Violet 49’s fine particle size and clean dispersion profile address that. Any time we change a minor ingredient or raw supplier, we run extensive pilot checks with feedback from regular users. By remaining engaged across the supply chain, we prevent small changes from disrupting big systems.

    Some industries explore new resins, such as bioplastics or specialty engineering plastics, that react unpredictably to standard colorants. To meet these demands, we conduct in-house research and coordinate with technical partners up and down the value stream. We keep an open-door mentality, ready to field even the most challenging performance requests, providing samples and adaptation advice at every step.

    Long-Term Support and Documentation

    Our role as the manufacturer doesn’t stop once a shipment leaves the loading dock. We keep batch samples, both for research and for any necessary customer queries or investigations down the road. Our documentation process includes not only quality certificates but real data gathered at each production stage. This practice comes from decades in the field, where having a traceable record solves problems that on-the-fly troubleshooting can’t address.

    New regulatory standards or material specifications come up every year. Our researchers keep themselves current through industry associations and ongoing conversation with major chemical bodies. Any updates affecting formulation options or environmental limits trigger internal reviews. We update safety instructions, usage guidance, and labeling according to the latest data.

    Looking Forward: Innovation and Responsiveness

    Staying at the top of the dye industry means more than repeating the same formula forever. Our innovation team is always listening for feedback from the market and from production partners exploring fresh uses for Solvent Violet 49. New color trends, changing regulatory pressures, or opportunities for even greater process efficiency all influence our product evolution.

    Recently, we’ve started projects on lowering total carbon footprint, both through improved process energy efficiency and the use of renewable feedstocks where possible. Even with a dye product developed decades ago, there’s always room to sharpen both sustainability and performance in parallel. Every productive idea—from refining how we minimize dust, to improving color intensity, to reducing residual solvent carryover—comes from listening to the people who work with our dye every day.

    Practical Support for Formulators

    Manufacturers with tight schedules and diverse needs depend on quick answers to technical questions, especially about blending, processing, or troubleshooting performance variances. We built an in-house technical center, staffed by experienced chemists and those with shop-floor backgrounds, to bridge the gap between R&D and real-world performance.

    Whether it’s clarifying compatibility with new solvent systems, providing spectral and CI data, or suggesting proven co-dispersants for difficult blends, we commit to making ourselves accessible. We keep an extensive knowledge base of field-tested solutions from decades of dye engineering, so anyone working with Solvent Violet 49 can benefit from both our documented experience and our lived troubleshooting know-how.

    Closing Thoughts: The Manufacturer’s Responsibility

    Carrying Solvent Violet 49 from lab bench to factory floor to global client is more than mixing chemicals. It’s long-term stewardship over a product that shapes color, production schedules, workplace safety, and even the footprint we leave behind. Every batch embodies not only technical performance but the experience, responsibility, and trust we have built over years of making and refining this dye.

    Years of interaction with end users, regulatory bodies, and our own staff have shown us that transparency, precision, and responsiveness matter just as much as dye purity or shade strength. Solvent Violet 49 continues to grow and change as markets and technologies evolve—always reflecting our own commitment to doing it right, from the core chemical structure to every handshake along the supply chain.

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