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HS Code |
739366 |
| Chemical Name | Pigment Red TR |
| Color Index Number | C.I. Pigment Red 4 |
| Cas Number | 2814-77-9 |
| Molecular Formula | C24H17Cl2N3O2 |
| Molecular Weight | 450.32 g/mol |
| Appearance | Red powder |
| Density | 1.6 g/cm³ |
| Melting Point | 227°C |
| Light Fastness | 3-4 |
| Oil Absorption | 45 g/100g |
| Solubility | Insoluble in water |
| Ph Value | 6.5-7.5 |
| Heat Resistance | Up to 180°C |
As an accredited Pigment Red TR factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Pigment Red TR is packaged in a 25 kg net weight fiber drum with a polyethylene inner lining for moisture protection. |
| Shipping | Pigment Red TR should be shipped in tightly sealed containers to prevent contamination and moisture intrusion. Store and transport in a cool, dry, and well-ventilated area away from strong oxidizers. Handle with care to avoid spillage or dust generation. Ensure compliance with local and international transport regulations for chemicals. |
| Storage | Pigment Red TR should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of ignition. Keep containers tightly closed to prevent moisture absorption and contamination. Avoid contact with strong acids or oxidizing agents. Store in labeled, suitable containers and follow safety guidelines to prevent environmental release and ensure safe handling. |
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Purity 99%: Pigment Red TR with a purity of 99% is used in automotive coatings, where it provides high chroma and excellent color consistency. Particle Size 0.3 μm: Pigment Red TR with a particle size of 0.3 μm is used in high-resolution inkjet inks, where it enables superior dispersibility and print sharpness. Lightfastness Grade 7: Pigment Red TR with lightfastness grade 7 is used in exterior architectural paints, where it offers prolonged color retention under UV exposure. Heat Stability 200°C: Pigment Red TR with heat stability up to 200°C is used in plastic coloration processes, where it ensures color integrity during high-temperature extrusion. Oil Absorption 35 g/100g: Pigment Red TR with an oil absorption value of 35 g/100g is used in offset printing inks, where it promotes optimal ink rheology and processability. Residue on Sieve Max 0.05%: Pigment Red TR with residue on sieve max 0.05% is used in fine art supplies, where it achieves uniform texture and smooth brush application. Moisture Content Max 1%: Pigment Red TR with moisture content max 1% is used in powder coatings, where it maintains free-flowing powder characteristics and prevents agglomeration. Color Strength 105%: Pigment Red TR with color strength 105% is used in synthetic fiber dyeing, where it enhances brilliance and reduces dye loading requirements. Specific Gravity 1.4: Pigment Red TR with specific gravity 1.4 is used in PVC flooring materials, where it ensures homogeneous pigment distribution and color uniformity. pH Value 6.5: Pigment Red TR with a pH value of 6.5 is used in aqueous paint formulations, where it guarantees pigment stability and prevents flocculation. |
Competitive Pigment Red TR 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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Pigment Red TR is a trusted synthetic organic pigment favored by plastics, coatings, inks, and masterbatch producers who value lasting color and resistance to environmental stress. Working directly at the production site, we've shaped our process to bring out deep, vibrant reds, with extra care given to consistency from batch to batch. For many years, we've seen this pigment transform products not just with visual pop but with toughness against fading from sunlight, heat, and chemical contact.
Our Pigment Red TR, often referenced by its color index number, has proven itself a precise and reliable choice for PVC, polyolefins, rubber, and engineering plastics. Each production line must tolerate different shear conditions, temperatures, and solvent types, and we know from daily practice how these factors change pigment performance. Our formulation addresses common complaints: bleeding, migration, and poor color strength. Repeated feedback from longtime customers—both local converters and international coatings firms—points to reduced downtime and lower scrap rates after switching to our pigment.
Typical pigment grades under the Pigment Red TR name include the PR 112 and PR 48:2 variants. Over our years in synthesis and milling, we've fine-tuned particle size, purity, and surface treatment to meet the needs of busy compounding and formulation lines. Most batches measure an average particle size below 1 micron, supporting bright, dense hues. Oil absorption for these variants usually falls in the range suited to solvent-based ink formulations—giving ink technicians faster dispersion and fewer grid blockages.
Demand for heat stability in polyolefin and PVC processing led us to adapt both drying and surface modification methods. For example, PR 112 in our lineup shows improved thermal resilience, keeping its chroma above 200°C—covering the most common ranges in extrusion and injection molding. We've heard firsthand from masterbatch facilities running continuous lines that this stability lets them ramp up throughput without worrying about pigment breakdown or color shift.
Pigment Red TR handles a variety of application methods—screen printing, gravure, offset, or dry blending in plastic ribbons—without caking or forming unwanted spots. Paint and coating customers use it in both solvent and water-based systems, thanks to our repeated washing and filtration steps that reduce contaminants. In packaging inks, resistance to migration has become more important as regulations evolve. Our in-line tests show low extractable fractions, meaning end-products fare better under rub, light, and chemical exposure tests.
Many red pigments show desirable color at first glance, but performance varies sharply under typical plant conditions. During new customer trials, side-by-side runs against alternatives—such as Pigment Red 57:1, PR 49, or even certain diketopyrrolopyrrole reds—often reveal where Pigment Red TR stands out. PR 57:1 gives softer, bluer reds, making it challenging for automotive coatings demanding high chroma and purity. PR 49, while cost-effective, lacks the same resilience in outdoor plastics, succumbing faster to UV and detergent washes.
In high-performance coatings or plastics, customers need more than a basic shade. As the pigment supplier controlling all synthesis and finishing steps, we've responded to customer needs for a balance between color depth, processability, and resistance to migration and bleeding. Pigment Red TR keeps structural integrity across a broader temperature and pH range, allowing more flexibility for formulators needing to match design requirements with regulations on extractables and migration.
In large-batch ink settings, competitors often report foam or grit build-up when running other reds at high loadings. Our production records show that our TR line resists filter clogging, even during demanding long press runs. This translates to fewer line stoppages, which in practice means faster turnaround and less cleaning expense.
Some pigments marketed for plastics meet only narrow requirements, like easy dispersion or low cost, yet miss the mark on lightfastness and durability. Large packaging clients have shared their switch stories where early reds caused unwanted shade drift after just a few months on a store shelf or during long transport. By contrast, third-party accelerated weathering tests on our Pigment Red TR support stable color over months of direct UV exposure, keeping brand colors reliable end to end.
Operating our own reactors and finishing mills gives us regular feedback on how pigment tweaks affect day-to-day dispersing and storage. Early batches taught us that fine control of moisture and aggregation prevents caking during humid transport. By refining our drying and sieving process, we've achieved a flowable dust profile that pourers can handle with fewer respiratory irritants. Larger pigment plants, which often rely on third-party toll processors, risk losing this direct process control, leading to wide swings in performance. Running everything under one roof lets us catch small issues before they affect customer lines.
Ink producers blending for rotogravure, flexo, or digital systems see our pigment pass through micronizers and bead mills with quick break-up—critical for high-solids, low-VOC systems where shear is at a premium. During direct collaboration trials, customers noted easier wetting and shorter milling times with our TR pigment compared to earlier, wax-heavy formulas. That means more batches completed per shift and less downtime clearing lost material from lines.
Plastics extruders find value in TR’s pigment structure, which resists plate-out and doesn’t bleed during high-heat cycles. Often, a standard red may deposit out at die lips or cause color streaks. Thanks to our focus on surface treatment—a process many competitors skip—our pigment loads smoothly into the base polymer with fewer rejects at inspection. Field audits over several years show reduced pigment-related rework, especially in large sheet and profile lines using recycled blend stocks.
On the shop floor, we've watched Pigment Red TR slot into dozens of final products—shampoo bottles, outdoor signage, flooring, automotive interiors, shopping bags, and rubber gaskets. Packaging designers count on high tint strength for bright reds that stand out on crowded retail shelves, while injection molders need color that stays fast through aging, cleaning, and product handling. In textiles and printing, short turnaround and repeatable shade are daily priorities. Pigment Red TR excels at holding saturation after hot-wash cycles, letting fabric printers promise longer-lasting patterns to customers who demand washfastness on the label.
Industrial paint and coatings lines highlight another key strength: superior dispersion in both alkyd and acrylic bases, avoiding settling in cans or drums after weeks of storage. Epoxy and powder coat users need pigments that don’t degrade or change hue through baking cycles up to 220°C. Our lab runs and customer feedback show color reliability for demanding end-uses such as warning signage, machine casings, and sports equipment.
Flexographic and offset printers work under tight deadlines and have repeatedly shared that our pigment gives them stable shade output across different press speeds and substrates—especially after running through multiple inline dryers or cure lamps. Several international packaging and label printers have been able to cut back on pre-press corrections, relying on predictable color holding through long print runs and material changes.
As environmental and consumer safety regulations get sharper, our direct control over raw material sourcing and traceability matters more. Many pigment brands rely on third-party suppliers for critical intermediates, which risks contamination or inconsistency. By synthesizing all main intermediates in-house—including key naphthol and azo couplers—we monitor for heavy metals, halogens, and aromatic amines. Each production batch runs through a full battery of heavy metal and extractable screenings, well before bagging. This gives downstream users peace of mind for regulated goods like children’s toys, food contact coatings, or medical plastics.
Former customers have reported challenges passing EN 71-3 or FDA compositional guidelines when using cheaper, loosely controlled red pigments. We keep tight to our established formula and process controls, so each drum or sack is backed by historical data. This traceability supports easy customer documentation during audits and minimizes unpleasant surprises during country-by-country certification checks.
We train our plant staff on dust control, PPE, and air filtration because pigment dust can sensitize skin or irritate lungs in poor conditions. Modern bagging lines, closed transfer hoppers, and local exhaust measures keep exposure rates among the lowest in the sector. This focus on safety not only keeps our plant reliable but builds trust with visiting customers and inspectors who want to check practices in person.
Our experience tells us longevity comes from consistency—not only in the final pigment but across the full pipeline from raw material to packaging. Early on, we learned the risk of working with outside processors or short-run blending partners. Minor batch variability can cause major issues downstream, especially for brand-critical applications like woven bags, high-visibility labels, or export-grade construction plastics.
We regularly invest in new process technology—dynamic mixers, modern reactors with in-process color monitoring, real-time particle size analyzers—to shrink variation between lots. This equipment means lab specs translate into real-world, repeatable product. Over time this makes customer switchovers almost seamless: consistent pigment strength, tested by in-house spectrophotometry, limits color drift when transitioning from plant trials into full commercial runs.
Every year, our technical team follows trends in pigment use—from new packaging laminates to tougher food contact laws—adjusting formulas and process steps where necessary. Ongoing partnerships with local and overseas labs let us benchmark against imported and domestic competitors. By focusing on both current needs and upcoming regulations, we help customers future-proof their color decisions and production lines.
No pigment application is without challenges. We've seen tough spots—from high-shear twin-screw extruders causing unexpected pigment aggregation, to fast-moving gravure presses showing minor shade drift during long print jobs. In plastics, specific raw material blends sometimes increase plate-out or cause color gaps after compounding with recycled content. From these challenges, we’ve learned to work closely with customer process engineers, offering both technical visits and lab trials to tweak process points—adjusting temperature windows, tweaking masterbatch carrier blends, or optimizing screw design for even pigment distribution.
Sometimes, customer formulation habits—such as excess use of dispersants or anti-blocking agents—unintentionally mask pigment results. We bring these cases back into our lab. Through joint trials, we can dial back unnecessary additives and hit both high loading and low migration targets without compromising the end color. New coating lines, for example, benefit from knowing exactly where to add pigment, whether during grind, letdown, or final blending, avoiding process hiccups down the road.
Product support also means keeping an open line for technical troubleshooting. If a customer plant reports odd specks, off-shade batches, or process build-up, we offer full root-cause tracking from our own historical production records to on-site checks at their facility. This partnership approach keeps their lines running and advances our own product control.
From the very first reactor charge to the packaged pigment drum, every step is in our hands. This direct oversight offers concrete benefits: better documentation for audits, faster troubleshooting, and the ability to pivot quickly for special requirements. It means technical staff and plant operators can spot and fix issues before product ships, instead of relying on distant tollers or repackagers.
Being the manufacturer, we regularly run into edge cases: unexpected humidity, unusual base materials, or local regulation quirks that affect how pigment behaves in the field. We're here to adapt our process and share those practical learnings with formulators—whether they're developing a line of school supplies, high-volume packaging, or durable signage.
Our everyday goal remains clear: support color that lasts, performs, and makes products stand out, without leaving surprises for the next user in the value chain.
Pigment buyers and users expect not just a pretty red, but one that solves day-to-day problems—whether it’s cutting downtime, meeting safety checks, or keeping batch-to-batch color identical year-over-year. We’ve shaped every part of our process toward these outcomes, relying on practical experience and feedback direct from production lines.
As customers expand into new application fields—from compostable plastics to low-migration food wraps—we keep investing in new testing and synthesis methods. Proactive dialogue with our partners means we can anticipate changes in regulatory environments, raw material trends, and end-user tastes. That keeps Pigment Red TR ahead as a color solution, not just an ingredient, across a changing industrial landscape.
Every batch gets the same focus—proven raw materials, rigorous synthesis, and quality controls rooted in firsthand plant experience—delivering a pigment that not only looks great on paper, plastic, and textile swatches but also meets the rigors of modern markets.