Products

Lithol Rubine 188

    • Product Name: Lithol Rubine 188
    • Alias: Pigment Red 57:1
    • Einecs: 215-425-3
    • 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

    422642

    Chemical Name Lithol Rubine 188
    Colour Index Pigment Red 57:1
    Cas Number 5281-04-9
    Appearance Red powder
    Shade Bluish Red
    Specific Gravity 1.5-1.8
    Oil Absorption 45-55 g oil/100g pigment
    Light Fastness 3-4
    Heat Resistance Up to 180°C
    Solubility Insoluble in water
    Ph Value 6.0-8.0
    Molecular Formula C18H11ClN2O6Sr
    Main Uses Printing inks, plastics, coatings
    Resistance To Acid Moderate
    Resistance To Alkali Moderate

    As an accredited Lithol Rubine 188 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Lithol Rubine 188 is packaged in a 25 kg woven bag with an inner polyethylene liner for moisture protection and secure handling.
    Shipping **Lithol Rubine 188** should be shipped in tightly sealed, labeled containers, protected from moisture and strong oxidizers. Store and transport in a cool, dry, and well-ventilated area. Comply with local regulations regarding chemical shipments. Avoid generating dust and use proper personal protective equipment during handling. Not regulated as a dangerous good.
    Storage Lithol Rubine 188 should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of ignition. Keep the container tightly closed when not in use to prevent contamination and moisture absorption. Avoid storage near strong oxidizing agents and acids. Store at ambient temperature and handle in accordance with standard industrial hygiene practices.
    Application of Lithol Rubine 188

    Purity 98%: Lithol Rubine 188 with purity 98% is used in high-grade plastics coloring, where it ensures consistent and vivid red shade development. Particle size <3µm: Lithol Rubine 188 with particle size below 3µm is used in ink formulations, where it provides excellent dispersion and uniform print quality. Heat stability up to 180°C: Lithol Rubine 188 with heat stability up to 180°C is used in textile dyeing, where it delivers color retention after thermal processing. Oil absorption 45g/100g: Lithol Rubine 188 with oil absorption at 45g/100g is used in offset printing inks, where it improves pigment wetting and print smoothness. Light fastness grade 4: Lithol Rubine 188 with light fastness grade 4 is used in packaging applications, where it ensures prolonged color stability under light exposure. Moisture content <1%: Lithol Rubine 188 with moisture content below 1% is used in masterbatch concentrates, where it prevents agglomeration and promotes efficient pigment dispersion. pH 6.8–7.2: Lithol Rubine 188 with pH range 6.8–7.2 is used in water-based coatings, where it provides formulation stability and prevents color shift. Tinting strength 105%: Lithol Rubine 188 with tinting strength of 105% is used in decorative paints, where it achieves high color intensity and coverage with lower pigment loading. Melting point 320°C: Lithol Rubine 188 with melting point of 320°C is used in engineering polymers, where it maintains color strength during high-temperature processing. Solvent resistance high: Lithol Rubine 188 with high solvent resistance is used in industrial coatings, where it resists color bleeding and preserves finish integrity.

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    For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.

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    Email: admin@ascent-chem.com

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    Certification & Compliance
    More Introduction

    Lithol Rubine 188: Groundwork for Reliable Color Performance

    Stepping into any pigment production hall, the story of color starts long before the first batch. Consistency and practical handling pair with raw material purity, and nothing illustrates this better than Lithol Rubine 188. In the field, this pigment has become the daily pick for print shops and coatings lines that cannot afford a single shade shift from job to job. We have followed the evolution of this product across decades and across industries because we see what printers, ink makers, and paint manufacturers deal with as operating realities—not just in the testing lab, but right on the press and in mixing tanks.

    Proven Experience Underpins Every Batch

    In manufacturing, each granular pile, every tumble or sift, counts. Producers need robust performance under pressure, from high-speed offset presses where pigment dispersion can make or break an entire production run, to plastics where migration or color bleed can reject a whole lot. Lithol Rubine 188 stands out. The structure isn’t just built for textbook compliance. Over years, we tweaked processing temperatures, pressure regime, and filtration cycles to push out trace sodium and maintain absolute phase stability. Direct feedback from customers pushed us to bring metal-free options, drive down insoluble salt content, and refine filtration without upcharging or hiding behind a spec sheet. This pigment resists both caustic attack and acid drop-outs, so it goes through wastewater lines without fouling or discoloring. Real-world advantage matters more than hypothetical benefits.

    Reliable Handling in Complex Applications

    Offset inks call for a clean, hot red shade, but not just in theory. Whether the pigment hits a large-volume Japanese press for magazine work or turns up in high-gloss packaging inks, subtle undertones get noticed the moment a customer compares a new run with an old one. We developed Lithol Rubine 188 as a semi-transparent, blue shade red with strong coloring value, setting it apart from dirtier reds that dull on dilution or over-varnishing. Consistently, it punches above its benchmark with maximum color bloom on coated and uncoated papers. Water-based and solvent inks benefit from rapid wetting and controlled particle sizing; we calibrate grind stages with on-site color matching so every customer batch handles the same way.

    Some pigment lines look good on a chart but clog mills or filter bags in production. Ours has to wash down and filter off easily, leaving almost no residue in kettles or lines. Ink makers told us about abrasive reds that grind down pump parts, so we engineered Lithol Rubine 188 for lower hardness. This protects mill components and means expensive downtime doesn’t follow routine color changes. For press operators, less filter plugging means faster changeover and less scrapped material. This attention to manufacturing details stems directly from our own equipment, where the cost of cleanup and reset grows every month.

    Purposeful Color Strength and Heat Stability

    Too many pigment stories end at color charts. Lithol Rubine 188 holds up against repeated thermal cycling: it keeps shade integrity in high-temperature baking, lamination, and hot-melt applications where reds have a habit of browning out. There’s enough discipline in formulation to keep hue steady even after hours in the drier or oven. We do not run batch-to-batch color tolerance wide to boost production; shade drift costs customers real dollars in returned goods and reworked lots.

    Color strength matters most right where it trades off with transparency. In practice, higher pigment loading can thicken up an ink too much for fine detail work. Lower-quality reds tend to go muddy when thinning out for halftone jobs. With Lithol Rubine 188, our teams matched process conditions between pigment and carrier so end users get both brightness and clarity in mid to high concentrations, without risk of bronzing in the dried film. This comes from practical line experience. We watched ink kitchens solve pigment stacking problems by switching only the red channel. Less correction saves both time and materials—and it stops the endless loop of shade adjustment.

    Versatile for Diverse Manufacturing Needs

    In our daily supply planning, we see how Lithol Rubine 188 travels from ink to coating to plastic and back again. Ink makers put it to use in offset, gravure, and flexo, each with different requirements for pigment grind, surface wetting, and flow. Coating producers use it for everything from decorative laminates to automotive touch-up paint. We learned quickly to formula-match for both water and solvent phases: so, red developers get smooth floc dispersion, stable emulsion, and controlled floating. Where converters need warmth or colder undertone, process adjustments alter shade subtly—without swapping raw materials or calling in specialty items.

    For plastics, migration and weathering can trip up otherwise reputable pigments. That’s a direct insight from the field, watching blown film extrusion and injection molding plants catch streaks or see pink leach into adjacent layers. We built 188 for above-average lightfastness and controlled migration under typical film and sheet-forming temperatures. Process audits showed us where subpar reds started unwanted bleed into polyolefins. So our technical team re-worked the pigment-to-resin ratio and tested for heat distortion stability. Outgassing incidents dropped off and complaint tickets slowed. On-site trials trump glossy catalog claims every time.

    Comparison to Other Market Reds

    Lithol Rubine 188 sets itself apart from commodity reds and deep violet pigments often employed as “one size fits all” solutions. While lower cost reds can bulk up an ink’s solids, many struggle in fine halftones. They require excess dispersant or plasticizer, pushing up costs in indirect ways—beyond the invoice. In print samples, they display a brick or purple cast at different ink loads. We see customer scans that pick up deviations of just one or two delta E units, actionable for bulk buyers who calibrate print runs by batch. Our pigment keeps shade inside target boxes for both gloss and matte grades, formed in real working environments from actual feedback.

    Some pigment lines, especially those prioritizing time-to-market over performance, sacrifice purity for throughput. This shows in trace byproducts and volatile content. Lithol Rubine 188 always undergoes a post-filtration cleanup to keep key impurities, such as sodium and sulfate, at a minimum. This reduces unpredictable offset with metallic driers and resin interaction in coatings. Real maintenance logs prove that filter life stretches and cleaning complexity drops wherever this discipline shows up in a pigment workflow. Regulatory compliance and low extractables are not just numbers: they are daily deliverables for clients in food packaging and medical labeling, where migration and contamination draw immediate scrutiny.

    Long-Term Supply Chain Perspective

    Most pigment users look to chemical producers not just for boxes of material but as long-term partners. We keep transparency on raw material sources and establish stable, multi-site supply lines for key intermediates — so even during global feedstock shortages, Lithol Rubine 188 supply does not stall out. Range planning calls for regular stockpiles, finished inventory at multiple warehouses, and a verified batch recall process. Every step was developed in response to problems clients raised: runs stalled on missing pigment, blamed for late magazine drops or missed packaging orders. Our entire system is built for predictability. When we scale up or pause for maintenance, our customers know before logistics gets the first truck loaded. This level of trust builds business resilience on both sides.

    Environmental Health and Product Safety

    Each regional law—or end user—sets higher standards on pigment safety now. Our production lines comply with global regulatory demands for heavy metals, extractables, and odor, subject to recurring audits by both domestic and overseas clients. We are upfront about trace contents, full MSDS access, and ongoing analytical reports. Once, years ago, pigment lots arrived from a competitor with off-odors and pink haze, resulting in landfill disposal and inventory losses for converters. These stories drove our own internal quality rules and production line screening. We keep cross contamination in check not with marketing promises, but regular swab testing and line flushing. The result is fewer product recalls, lower return rates, and a regular flow of clean, compliant pigment into customer facilities.

    Downstream users ask about carbon footprint and waste stream management as part of their buying audits. To answer, we offer full lifecycle accounting—from raw material sourcing, through process energy usage, all the way to final wastewater treatment. Engineers track energy and water consumption per ton, with targeted reductions each year. Filter cake and mother liquor get routed to responsible third-party handlers with cradle-to-grave documentation, cutting landfill volume and improving environmental scorecards for both us and our clients. Our process avoids restricted azo links and banned amines—this is not just driven by compliance, but real customer feedback from buyers supplying regulated regions.

    On-Site Application and Technical Support

    Every pigment order leaves a trail—from our plant floor to your ink mill, extrusion line, or blending tank. Our involvement does not end with shipment. Where technical expertise is required, we bring field-experienced staff to customer lines for troubleshooting, process tuning, or color matching. This hands-on support has carried jobs back from the brink of rejection and provided practical solutions on offset coating defects, ink foaming, and plastic migration. Our technical teams report unusual reading spikes or negative performance trends directly to production, which closes the information loop and triggers corrective action on the next batch.

    We know not every customer has the lab time or hands-on staff to vet each pigment change. Upstream, we provide pre-dispersed pigment samples and alternative grind options so every converter can test process fit on live material—before cutting a purchase order. This limits line downtime and scrapped batches. On-request lots can be adjusted for flush pigment, high-solids concentrates, or customized grind parameters to solve unique process challenges. The feedback then directs our product improvement: everything from grind timing to packaging specification gets shaped by real-world customer results, not theoretical lab outcomes.

    Adaptation to Market Trends and Innovation

    Market signals matter more than old catalogs. We respond directly to both regulatory shifts and innovation in end-use goods—so Lithol Rubine 188 continues to evolve. Customers ask for higher transparency for modern packaging trends, or lower mill abrasion as formulations switch to newer resins. We shift our own production lines, pull in fresh testing standards, and redesign particle treatment methods to stay ahead of both expectation and legal requirements. Over time, this built-in adaptability—not just a fixed recipe—grants our customers confidence as regulatory, environmental, or design standards shift. Our process never freezes; we routinely trial new purification, drying, and granulation advances to ensure Lithol Rubine 188 holds its lead in both old and new product designs.

    Migration toward digital and inkjet technologies changes pigment demand in ways not obvious from the outside. New forms of pigment need higher dispersibility, stricter size control, and even lower impurity profiles. Each production cycle, our technical and marketing teams review pigment criteria against these demands, making tweaks necessary to deliver both legacy print and digital color fidelity. Internal beta lines allow us to prototype and trial pigment forms before market introduction, keeping original Lithol Rubine 188 qualities at the core for legacy processes, while evolving for new uses.

    Facing Challenges—And Finding Solutions

    Manufacturing always throws a curve ball. Raw material purity can change. Process water shifts. Regulatory authorities set new limits. We anticipate, adjust, and verify at every choke point, sharing data and field results not just with customers, but within our own organization. Years ago, a batch contamination traced to cleaning line shortfalls drove us to full lot traceability and certification even at intermediate steps. This heads-off small problems before they become costly headache for end users. If a pigment challenge arises, we attack it collaboratively, using both sample regrinds and field visits to quickly establish root cause and solution. Product development hinges not only on chemistry but on a willingness to stand behind every shipment, even if it means reworking, replacing, or reformulating batches to prevent customer disruption.

    We listen hardest when problems surface. Clients once flagged batch-to-batch rheology swings after extreme cold transport seasons. This spurred us to insulate storage tanks, add on-site viscosity controls, and push upstream blending closer to final usage specification. The same practice now shields winter shipments from temperature shock, protecting pigment integrity and customer production flows. Continual process refinement grows from listening to feedback at the shop floor and responding thoughtfully to repeated field issues.

    Technological Investments and the Road Ahead

    Present-day pigment production finds itself at a crossroads. Pressure mounts for broader color spaces, sharper transparency, and increased sustainability. Our in-house research group focuses on deeper process water recycling, next-generation particle surface treatments, and more effective energy use—resulting in Lithol Rubine 188 batches with both improved carbon footprint and higher purity. We keep refining our process for increased yield per ton, less processing waste, and lower embodied energy, which downstream customers see reflected in both quality and reportable environmental impact.

    Supplier reliability now means extending our expertise to customer R&D as well. When printers, ink makers, or plastics converters flag a need for performance beyond what 188 currently offers, we open up dialogue, pool technical resources, and co-develop new pigment forms or processing approaches. Real stories anchor innovation: every formulation adjustment, process improvement, or logistical adaptation is shaped by the realities we see in the field. Our technical team, in concert with long-term clients, forms the backbone of every significant change. Innovation remains practical, accessible, and benefit-driven—never just for laboratory demonstration.

    Building Trust with Consistent Delivery

    In our factory, precision comes from small details: controlling the wash cycle mineral content, fine-tuning reactor conditions, or retraining operators on new blending techniques. Each shipment reflects hundreds of small improvements. Repeat business, long-term supply contracts, and feedback loops from failure and success make us more responsive to both sudden and gradual industry change. Our approach to Lithol Rubine 188 grew directly from customer experience, technical problem-solving, and a refusal to settle for low-bar commodity pigment practice. The pigment supports not just printed pages or colored coatings, but the larger workflow stability that our business and our customers demand. Experience, reliability, and technical honesty lie behind each lot—we invite ongoing conversation to keep building pigment solutions that add real-world value every day.

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