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HS Code |
643335 |
| Chemical Name | Lithol Rubine 4BE |
| Color Index Pigment | Pigment Red 57:1 |
| Cas Number | 5281-04-9 |
| Chemical Formula | C18H12N2O6S2Ca |
| Appearance | Red powder |
| Molecular Weight | 504.55 g/mol |
| Lightfastness | Moderate |
| Solubility | Insoluble in water |
| Ph Value | 6.0–8.0 (10% suspension) |
| Heat Stability | Up to 180°C |
| Specific Gravity | 1.6–1.9 |
| Oil Absorption | 55–65 g/100g |
| Main Application | Printing inks |
As an accredited Lithol Rubine 4BE factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Lithol Rubine 4BE is packaged in a 25 kg net weight, sealed fiber drum with inner polyethylene liner for moisture protection. |
| Shipping | Lithol Rubine 4BE should be shipped in tightly sealed, properly labeled containers, protected from moisture, heat, and direct sunlight. Transport as a non-hazardous pigment dye, adhering to local and international transport regulations. Ensure packages are secure to prevent leaks or spills. Handle with care to avoid dust generation during transit. |
| Storage | Lithol Rubine 4BE should be stored in a cool, dry, and well-ventilated area, away from direct sunlight, heat sources, and incompatible materials such as strong oxidizers. Keep the container tightly closed to prevent moisture absorption and contamination. Properly label the storage container and avoid any conditions that could generate dust. Ensure appropriate spill containment measures are in place. |
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Purity 98%: Lithol Rubine 4BE with purity 98% is used in high-end packaging inks, where it ensures vibrant color consistency and minimal impurities. Particle Size D50 1.2 μm: Lithol Rubine 4BE with particle size D50 1.2 μm is used in offset printing applications, where it provides excellent dispersibility for smooth print results. Heat Stability 180°C: Lithol Rubine 4BE with heat stability 180°C is used in plastic coloration, where it maintains color strength and shade integrity during extrusion. Light Fastness Grade 4: Lithol Rubine 4BE with light fastness grade 4 is used in textile printing, where it enhances durability and reduces color fading under UV exposure. Oil Absorption 50 ml/100g: Lithol Rubine 4BE with oil absorption 50 ml/100g is used in solvent-based paints, where it facilitates optimal pigment dispersion and gloss development. Moisture Content ≤1%: Lithol Rubine 4BE with moisture content ≤1% is used in water-based ink formulations, where it minimizes clumping and ensures stable viscosity. pH Value 6.5: Lithol Rubine 4BE with pH value 6.5 is used in aqueous coatings, where it supports compatibility with various binder systems and prevents pigment degradation. Tinting Strength 105%: Lithol Rubine 4BE with tinting strength 105% is used in gravure ink manufacturing, where it delivers superior color intensity and optimal formulation efficiency. Solvent Resistance Excellent: Lithol Rubine 4BE with excellent solvent resistance is used in industrial coatings, where it improves long-term stability and prevents pigment migration. |
Competitive Lithol Rubine 4BE prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.
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Tel: +8615365186327
Email: admin@ascent-chem.com
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Lithol Rubine 4BE has earned its place across global printing and plastic industries by delivering a vivid red that runs deep. Speaking from decades in chemical manufacturing, understanding a pigment like this does not stop with formulation or particle size. Practical questions roll in daily. Printers ask about print density. Thermoplastics engineers push for migration resistance. Those in our field see raw materials come and go, but the true barometer isn’t just color strength or price. It’s which red keeps customers coming back despite shifting regulations and machinery upgrades.
Few pigments can match the commercial clout of Lithol Rubine 4BE. This pigment, recognized in the industry as Pigment Red 57:1, stands out both for its coloring ability and for its adaptability in various formulations. Chemically, it comes from the calcium salt of azo compounds, and, unlike its barium-based cousins, its manufacturing demands strict process control from start to finish. Handling the nitro-derivatives and diazotization steps goes beyond textbook recipes; these details separate reliable batches from unpredictable ones.
A lot of effort goes into purifying intermediates, maintaining the right pH, and controlling reaction temperatures. This ensures a product with consistent crystal structure — one that holds up on press or during extrusion. If a pigment batch drifts on hue or fineness, performance in actual production falls apart. Consistency depends on wide experience, not just nice packaging.
Markets buzz about shade, brightness, and dispersibility. To us in production, specifications play out as handling stability, filterability, and compatibility. For Lithol Rubine 4BE, average particle sizes range between 0.1 to 0.3 microns. Performance comes through clean milling and precise washing to minimize soluble salts. We measure oil absorption, moisture content, and check for unwanted trace metals. Too much moisture and a pigment cakes in the bag or destabilizes ink. Too many residual salts introduce risk to print heads and blending tanks.
Typical shade seen from Lithol Rubine 4BE sits around a bluish red, offering high color strength and a semi-transparent body. Reliable fastness on paper, certain plastics, and limited exposure to sunlight define its most frequent applications. Still, every batch faces scrutiny: a press-side operator can spot a half-shade mismatch before color checkers catch it. It’s our responsibility to keep variation tighter than the official “acceptable” ranges suggest. Production staff treat these numbers as a living thing — always relevant, never purely theoretical.
This pigment’s value depends on where it finds a home. Printers choose Lithol Rubine 4BE for gravure and offset inks because it brings vibrant reds at a price point families of organics rarely match. Ink makers like that it disperses easily in aqueous, solvent-based and certain UV systems, meaning the same bulk pigment covers wide ground with minimal rework. Our regular customers in packaging focus on its printability for food wrappers, paperboard cartons, and some non-woven textiles.
Plastic converters use Lithol Rubine 4BE in PVC, polystyrene, EVA foam, and Polypropylene applications where moderate light fastness suffices. If the requirement calls for outdoor exposure or extended sunlight, formulating moves to more expensive, highly stabilized reds. There are also limits on migration and heat stability that we discuss openly with buyers. We know which applications stress the pigment and which settings play to its strengths.
Lithol Rubine 4BE shows its best side in tasks with short to medium life cycles, indoor storage, and moderate temperature conditions. It survived industry scrutiny specifically because end products keep delivering, batch after batch. When talking with printers, nobody tiptoes around the fact that not every pigment fits every job — knowing that difference is part of why our pigment line stands out.
Buyers and formulators weigh up reds by cost, chroma, processability, and performance over time. There’s no “one size fits all” — each pigment has built its reputation around a few winning properties. To put Lithol Rubine 4BE in perspective, it’s helpful to look at related reds on real production lines.
Barium-based Rubine variants, known in the trade as Pigment Red 57:2, often cost more and offer somewhat higher lightfastness, especially for surface-printed films and higher-end labels. Yet, the calcium salt type, our Lithol Rubine 4BE, remains favored for short-run prints, high-turnover packaging, and flexible plastics where migration is less worrisome. Its easier wetting saves time for ink mixers, especially in high-speed lines.
Brighter reds like Pigment Red 48:2 push chroma higher but often sacrifice bleed resistance and can raise costs. Iron oxide reds hold up outdoors but flatten out in vibrance, looking more brick than raspberry. Lithol Rubine 4BE gives a balance — bringing enough brightness to pop, with process costs that allow scaling without tough price decisions.
Our long-term customers make decisions based on trust built from the pigment’s real-world delivery, not just catalog promises. Over years, these quiet details outweigh specs on a safety sheet or in a sales brochure.
We field regular calls from bulk printers facing tight deadlines who want reassurance: “Will this color stay consistent between jobs?” Others in plastics ask if thermal stability will survive a specific forming temperature. Our willingness to offer clarity separates us from less hands-on outfits. We don’t claim Lithol Rubine 4BE wins every contest. If a customer’s use case steps outside the pigment’s sweet spot, we say so plainly.
Formulators share feedback about how Lithol Rubine 4BE runs on their lines compared to past batches from other plants. Where process hygiene lapses — maybe a poorly rinsed reactor, cross-contamination, or excess moisture — off-shade outcomes can throw off an entire print run. By controlling not just reaction chemistry but handling and finishing steps, we build a confidence base batch-to-batch. In our experience, customers value practical transparency above hype; they know every pigment plant faces pressure, but few can show ten years of repeat delivery.
Packaging converters raise questions on migration and chemical compliance, especially as regulations tighten. Lithol Rubine 4BE holds favorable listings in many regulatory spheres, though some food-contact and sensitive applications demand extra diligence. We keep our certifications up to date, understanding regulatory risk never stands still. Because of this, we support customer audits, offer technical files, and walk through processes on-site where requested.
Pigment manufacturing has changed. Years ago, batches rotated more on price than performance; now, customers push back on inconsistency, regulatory gaps, and supply delays. Lithol Rubine 4BE remains in high demand because it still answers to practical needs. But pressures keep building: rising questions over heavy metals, global supply chain shocks, and new solvents or ink chemistries all force routine upgrades in how a factory runs.
To keep Lithol Rubine 4BE competitive, we made ongoing investments: closed-loop milling to reduce fine dust, updated effluent treatment, and real-time spectrometric checks to nail exact shade. These upgrades extend beyond compliance — they matter in production lines that can’t wait on lab confirmation. It’s easy for outsiders to overlook the stability and attention needed for every ton shipped. Product lines become trusted because their manufacturing backbone doesn’t shortcut at any stage.
Supply chain fluctuations have also forced fresh thinking. Raw material quality swings wider than a decade ago. We screen every delivery, doubling down on supplier audits that make a clear difference for our final color. Sometimes batches run on the edge, but the most experienced operators at our plant step in to course-correct before the product hits the warehouse. This accountability never goes out of style.
Plant managers and compounders want certainty — no reformulation surprises halfway through a project. We offer batch reservation, shade-matching by request, and technical support for blending into specific ink vehicles or resins. If stricter migration limits emerge, we run extended testing for those scenarios, so users face fewer just-in-time hiccups.
Facing higher cost pressures, some buyers try diluting pigment loads, which often leads to off-colors or poor hiding. We support optimized formulating through pilot batches, showing how minimal tweaks preserve color power without sacrificing coverage. Adjustments based on dispersion collapse or settling remain common; our technical staff works alongside operators, not just through remote advisory.
Some plants integrate Lithol Rubine 4BE into automated color-matching systems. We provide reference data fine-tuned for these scenarios and keep samples updated for full-system calibration. Labs working under tighter environmental footprints can use our low-residue grades — these address newer waste-reduction mandates impacting parts of the market.
Every plant producing Lithol Rubine 4BE faces the challenge of total traceability. Customers ask: Was this batch solvent-precipitated or filtered? What grade of clarifier is involved? These details may seem minor but in field use, impurity carryover or handling error sticks out. We maintain full digital logs from incoming raw material through wet crush, washing, drying, and sieving. If a customer flags a performance issue, our records pinpoint which sub-lot or process variable changed. This isn’t just paperwork — it’s how repeatable color and performance take shape.
Filter cake washing remains a critical step; rushed or incomplete cycles result in destabilizing salts, which impact not just storage but the pigment’s acceptance in sensitive applications, including certain types of food packaging. We train every operator on the signs of phase separation and keep supervisors in the loop every shift. This means problem-solving never waits for a weekly review.
The factory has implemented tighter dust controls so that ultra-fines don’t drift or create loss points. A focus on equipment cleanliness prevents cross contamination, especially on shared packaging lines. Customers see the benefit through reduced insoluble content, better flow, and fewer batch returns. Technical managers at customer plants often ask for certificates of analysis tied to specific properties; because our production records are so granular, we supply these files for each order.
Years ago, pigment production dealt mostly with yield and purity. Environmental safety now sits side-by-side with these targets. Through investment in closed water cycles and improved filter management, we cut down on wastewater and limit pigment dust. Proper control isn’t just about passing audits; it prevents loss of good product and supports a reputation for long-term reliability.
All our finished goods meet the strictest local emission limits for particulates and runoff. We educate our staff that safe handling doesn’t end at the factory door — our customers expect this vigilance when they audit shipments. We discontinued certain additives as regulations shifted, updating every batch release accordingly. Hazard labeling and transport compatibility get checked twice at the distribution dock; these steps matter on arrival at distant customer sites.
In high-throughput industries, even small incidents can ripple quickly. Managers track safe handling practices, spill response readiness, and personal protective equipment compliance. Well-made Lithol Rubine 4BE earns more than repeat orders; its traceability and compliance position it as a pigment that answers to today’s industrial reality.
Users don’t measure a pigment’s value just by color or price. Over years, patterns in supply reliability and technical support make the difference between a trusted raw material and a simple commodity. Lithol Rubine 4BE keeps proving itself because its manufacturing standards adapt as customer needs evolve — not by chasing trends, but by locking in process controls and traceability.
Every customer knows their success rides on materials that behave predictably, even when schedules press tight and labor shifts. Our plant teams keep lines running to plan, backing pigment shipments with technical files and service. We build business for the long haul; those who work on our floors see the results in the relationship between plant, user, and end product. Lithol Rubine 4BE stands as more than just a colorant — it acts as a measure of how seriously a manufacturer treats every step from chemistry to customer.
Whether planning monthly runs or rolling out a fresh product line, users find real value where trust and long-term performance intersect. Lithol Rubine 4BE keeps delivering, not as a faceless bulk product, but as a pigment with real investment behind every shipment and continuous improvement shaping every batch.