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HS Code |
934998 |
| Name | Pigment Brown 25 |
| C I Number | C.I. 41217 |
| Cas Number | 3333-71-3 |
| Chemical Class | Azo |
| Molecular Formula | C18H11FeN3O6 |
| Physical Appearance | Brown powder |
| Color Index | Pigment Brown 25 |
| Density | 1.8 g/cm³ |
| Melting Point | Decomposes |
| Light Fastness | Good |
| Heat Stability | Up to 180°C |
| Oil Absorption | 40-50 g/100g |
| Solubility | Insoluble in water |
| Applications | Plastics, coatings, inks, and paints |
| Ph Value | 6-8 (aqueous suspension) |
As an accredited Pigment Brown 25 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Pigment Brown 25 is typically packaged in 25 kg net weight, sealed fiber drums with inner polyethylene lining to ensure product integrity. |
| Shipping | **Pigment Brown 25** is typically shipped in tightly sealed, fiberboard or plastic drums or bags to prevent moisture ingress and contamination. It should be transported as per standard regulations for non-hazardous chemicals, stored in a cool, dry place, and kept away from incompatible materials. Proper labeling and documentation are required during shipping. |
| Storage | Pigment Brown 25 should be stored in a tightly sealed container in a cool, dry, and well-ventilated area. Keep it away from sources of ignition, direct sunlight, and incompatible substances such as strong oxidizing agents. Prevent formation of dust and avoid moisture contact. Proper labeling and handling according to safety data sheet guidelines are essential to ensure safe storage and use. |
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Purity 98%: Pigment Brown 25 with a purity of 98% is used in high-grade automotive coatings, where it ensures consistent color uniformity and gloss retention. Particle Size 0.5 µm: Pigment Brown 25 with a particle size of 0.5 µm is used in water-based inks, where it provides excellent dispersibility and smooth print finish. Heat Stability 250°C: Pigment Brown 25 with a heat stability of 250°C is used in plastic masterbatches, where it maintains chromatic integrity during high-temperature processing. Oil Absorption 40 g/100g: Pigment Brown 25 with an oil absorption of 40 g/100g is used in industrial paints, where it delivers optimal rheological properties and brushability. Lightfastness Grade 7: Pigment Brown 25 with lightfastness grade 7 is used in outdoor architectural coatings, where it enhances long-term color retention under UV exposure. Molecular Weight 620 g/mol: Pigment Brown 25 with a molecular weight of 620 g/mol is used in synthetic leather coatings, where it aids in superior pigment fixation and migration resistance. Melting Point 320°C: Pigment Brown 25 with a melting point of 320°C is used in powder coatings, where it withstands curing cycles without degradation. Chemical Stability: Pigment Brown 25 with high chemical stability is used in chemical-resistant flooring systems, where it prevents color shifting in aggressive environments. Tinting Strength 110%: Pigment Brown 25 with tinting strength of 110% is used in latex emulsion paints, where it enables enhanced formulation efficiency and vivid coloration. pH Range 6-8: Pigment Brown 25 operating in a pH range of 6-8 is used in textile printing pastes, where it provides reliable performance and fabric compatibility. |
Competitive Pigment Brown 25 prices that fit your budget—flexible terms and customized quotes for every order.
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Years of manufacturing specialty pigments have taught us there’s more to color than the shade itself. Pigment Brown 25 brings a mix of reliability, resistance, and visual satisfaction our team has refined across many production runs. Knowledge grows not just from lab analysis, but from the direct experience of mixing powders, observing drying cycles in real working environments, and tracking how those browns stand up to real-world use. With Pigment Brown 25, we’ve seen consistent demand across coatings, plastics, and inks, because formulators relying on clear, neutral browns want fewer adjustments batch by batch. We select raw materials with low heavy metal content and monitor every stage to keep batch-to-batch variation tight.
We have worked with the C.I. number 41225 for Pigment Brown 25. Through tight milling and controlled thermal conditions, we secure average particle sizes between 0.2 to 0.4 microns. Most customers receive it as a dry powder, deep-brown with a reddish-orange undertone and a chemical composition based on a benzimidazolone framework. It has demonstrated high color strength, particularly in high-concentration systems, so a little goes a long way, which has saved several partners money and complexity over alternatives that require higher loading. Oil absorption remains moderate, typically in the 40–50 g/100g range, which simplifies formulation for paint and plastics lines.
We watch lightfastness and weather resistance especially closely. Real-world application exposes pigments to sunlight, moisture, and handling that easily breaks down lesser grades. Years of field tests and feedback from exterior coatings users confirm that, even in direct sun and heavy rain, Pigment Brown 25 retains most of its initial tone after a year or more.
With so many browns on the market, the difference comes down to how colorists and technicians actually use them. We’ve run thousands of grindouts and test panels, seeing the stubbornness with which some pigments resist wetting or cause settlement issues in the mill. Pigment Brown 25 holds up; wetting is fast, dispersions stay smooth, and bleed remains minimal even in flexible PVC and polyethylene. Printers have confirmed that, in nitrocellulose and polyamide inks, our grade’s heat stability outpaces many other organic browns, keeping tints stable at 200 °C plus. That offers comfort where thin films, foils, or packaging call for both heat resistance and color regularity.
Some pigment browns fade or shift after exposure to acids and alkalis in commercial cleansers or packaging. Pigment Brown 25’s chemical backbone resists pH swings — a result of lessons learned while supporting coatings for metal drums and architectural siding. Users in powder coatings have shared results from prolonged outdoor exposure: less than 10% shift in chroma after months.
Paint producers, coil coaters, and plastics compounders have long brought us their toughest cases: shades too red, not deep enough, browns that go ‘flat’ in UV. Their production lines run fast and waste must stay low. We shape Pigment Brown 25’s filter grades to minimize dust, keep bulk density regular, and let automated dosing machines measure accurately. No two plants run identical conditions, so we often work with QA teams to verify compatibility in both aqueous and solvent-based systems. For waterborne coatings, issue of flooding or floating rarely comes up if the product’s dispersion protocol follows industry standards.
Technical support calls have shown us the value of pigment dispersibility in high-speed mixing. On high-shear bead mills or three-roll refiners, Pigment Brown 25 proves easy to deagglomerate without long milling cycles. That preserves gloss in topcoats and raises hiding power with fewer pigment particles.
There’s a long tradition in pigment use, built on color fidelity and trust. Houses painted decades ago still bear browns that came from well-made powders. Pigment Brown 25 answers to this heritage, with clear, familiar undertones that designers expect in wood-stains, masonry, and heavy-duty equipment. It’s a brown that sits between a deep roasted coffee and the earthier ochre hues — saturated, yet not overly red or yellow. That middle ground has cemented its use in decorative paints for offices, home interiors, and public spaces.
Producers of technical articles, like cable sheathing and plasticized PVC flooring, test for volatility at high process temperatures. Older brown pigments occasionally released fumes or softened above 180 °C, which triggered rework and scrap. By concentrating on the pigment’s molecular integrity, we’ve supplied batches of Pigment Brown 25 that withstand extrusion and injection molding without streaking, plate-out, or aroma.
Consistent pigment color runs deeper than a certificate of analysis. It begins with process control: from calcination, through microfiltration, down to the correct blending of anti-caking additives at the final stage. Our colorists measure masstone and tint strength with X-Rite tools and then verify against visual panels under daylight and artificial illuminants. Any lot straying from standard in hue or strength is held and retested, never shipped. That routine roots out potential sources of variability.
Our R&D chemists work closely with clients in the plastics and coatings sector. By running pre-dispersions or color flushes under real conditions, we help users adjust their millbase recipes without surprise. Aftermarket support often involves checks with end-user processes, including compatibility surveys with emulsifiers, wetting agents, and UV stabilizers. Over years, small tweaks, like the introduction of surface modifiers, have improved dust control and bulk handling without undermining the pigment’s main properties.
Some browns are cheap fillers, relying on high iron oxide content to deliver depth. They lose richness and may muddy finer details in coatings, films, and high-gloss papers. Pigment Brown 25, with its organic foundation, offers more saturation gram-for-gram, letting paint-makers reach color targets at lower dosages. That means reduced overall costs and more room for white or extender ingredients in the formula. Many of our bulk pigment buyers have remarked how quickly color consistency improved in their automatic dosing lines upon switching fully over.
It responds reliably to various binders and resins. Alkyds, acrylics, polyurethanes, even low-migration PVC plastisols — Pigment Brown 25 provides clear, predictable color with low risk of bleed or interaction. Screen printers value its solvent resistance and absence of ghosting in fine halftone work. Offset ink manufacturers often point to rapid drying and high covering power, even at thin film thicknesses. Unlike some other browns, our product rarely interferes with viscosity, even in high pigment-volume-concentration systems.
Not all feedback comes through the laboratory door. Painters in humid regions report that facades colored with Pigment Brown 25 resist chalking and fungal growth better than cheaper browns, an effect we traced back to the pigment’s low water solubility and chemical stability. One of our longest-running customers in architectural coatings ran multi-year outdoor weathering tests in Southeast Asia, returning only minimal changes in depth or shine. Mass tone browns held their look against strong competitors based on iron oxide or complex mixed-metal oxides.
For rotogravure and flexo ink makers, the difference became clear after side-by-side comparisons: Pigment Brown 25 delivered bolder, more authentic browns at lower pigment concentrations, helping converters control print costs and reduce machine downtime. On the shop floor, press operators said they cleaned up plates and trays with less residue, leading to faster turnarounds.
Health and safety on the shop floor matter. Pigment Brown 25 avoids lead, chromium VI, and other suspect metals, so manufacturers concerned with REACH or RoHS compliance find it easier to meet regional regulations. We keep an eye on evolving global standards and update safety assessments whenever chemical guidelines change. Low dusting helps workplace hygiene, especially in automated plants or facilities with manual weighing and mixing.
Minimizing waste is important from both an ecological and operational view. Over-specified pigments—those loaded with filler or with unpredictable grind—create surplus or off-spec product that must be disposed of. Delivering consistent Pigment Brown 25 batches maximizes production yield, a point that appeals to forward-thinking production managers and those tracking overall sustainability goals.
For users planning green building, low-emissions, or certified sustainable products, Pigment Brown 25 fits readily within the palette. Test panels sent to third parties indicate that volatile organic content remains insignificant in typical production conditions. Our drum and bag packaging program recycles internal scrap and uses low-resin or bio-additive liners where possible.
Every plant faces breakdowns and surprises. Equipment tolerances shift, seasonal humidity changes cause caking, and new base materials sometimes affect pigment performance. Our contact with engineers and plant foremen reveals practical issues—like clumping during transfer in high-humidity environments, drift during pneumatic transfer, and color drift in new polymer blends.
To counter these issues, we’ve worked with coatings and plastics processors to adapt blend morphology. Several years ago, feedback from a plastics compounder led us to alter surface conditioning treatments, resulting in a product designed for both dense mixing and automatic aspiration, cutting dust and loss when filling silos or hoppers. In high-moisture settings, we’ve seen improved performance just by switching packaging formats and stabilizing particle hydration.
Comparing Pigment Brown 25 with traditional iron oxide browns, the difference starts with color intensity and particle size. Iron oxides work well for robust, opaque colors, but tend to dull at low thickness and reduce the brilliance in transparent coatings or print inks. Pigment Brown 25 pushes stronger, purer tones with a finer particle distribution, making it a go-to for modern decorative finishes and challenging hues in fast-moving consumer goods packaging.
Against mixed-metal-oxide browns and certain copper- or manganese-based pigments, Brown 25 supplies similar or better heat stability—without the cost spikes that come with rare raw materials or the handling hazards attached to some metals. In solventborne paints and high-performance flexo inks, it reproduces target hues reliably, batch after batch, avoiding last-minute color corrections that are common with some other systems.
Some manufacturers seek out high-transparency browns for wood finishes, furniture stains, or antibacterial plastics. Pigment Brown 25 maintains clarity in both low- and high-PVC systems, enhancing woodgrain or texture detail, instead of obscuring it as chalkier mineral browns sometimes do.
Compared to earlier generations of benzimidazolone or disazo browns, our current grade features a cleaner finish in both masstone and tint, courtesy of advances in precursor purification and dispersion additives. That means fewer filtration steps and less downtime on filling lines with micro-screens or automatic straining.
Quality pigments draw on tradition and new learning. Over years of making Pigment Brown 25, input from paint technicians, plastics extruders, and ink formulating labs has repeatedly led to small, real-world upgrades: better flow in dry-mixing lines, lower moisture pickup after transport, and reduced letdown time in pre-dispersions. We meet quarterly to review feedback and trial data, aligning production tweaks not just with best practice but with the daily reality of end-users.
Strong pigment performance ultimately builds on consistency and openness to critique. Our operations team spends time on the floor, not just in the lab or office—watching for subtle changes in tone or granule feel, listening to operators when a batch behaves differently. We maintain traceability from raw ingredient through finished bag, so every question on hue or strength can be traced to its source, closing the loop between supplier and user.
As the market pushes for higher-performance paints, lower-VOC solutions, and multi-use packaging, Pigment Brown 25 has demonstrated the capacity to keep up—evolving as new binders, resins, and substrates emerge. We listen closely to our partners, investing not just in chemistry, but in longstanding working relationships that help all of us deliver bolder colors and better results.