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HS Code |
580861 |
| Cas Number | 2832-40-8 |
| Iupac Name | 4-(4-nitrophenylazo)aniline |
| Molecular Formula | C12H10N4O2 |
| Molar Mass | 242.24 g/mol |
| Appearance | Orange powder |
| Melting Point | 186-189 °C |
| Solubility In Water | Insoluble |
| Density | 1.35 g/cm³ |
| Chemical Class | Azo dye |
| Synonyms | Orange 42, C.I. 60775 |
| Lightfastness | Moderate |
| Applications | Textile dyeing, plastics, inks |
As an accredited Disperse Orange 42 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Disperse Orange 42 is typically packaged in 25 kg fiber drums with inner polyethylene liner, labeled with product name and safety details. |
| Shipping | Disperse Orange 42 is typically shipped in securely sealed containers such as fiber drums or bags, protected from moisture and direct sunlight. Ensure proper labeling according to relevant transport regulations. During transit, handle with care to avoid spills or container damage. Store in a cool, dry, and well-ventilated area upon arrival. |
| Storage | Disperse Orange 42 should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from direct sunlight, heat sources, and incompatible substances. Avoid exposure to moisture and strong oxidizing agents. Proper labeling and containment are essential to prevent spills or contamination. Store at room temperature, and ensure compliance with local chemical storage regulations for safe handling. |
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Purity 98%: Disperse Orange 42 with purity 98% is used in high-quality polyester dyeing, where it ensures vivid color strength and consistent shade uniformity. Melting Point 210°C: Disperse Orange 42 with a melting point of 210°C is used in thermosetting plastics coloration, where it provides excellent heat stability during processing. Particle Size 2 µm: Disperse Orange 42 with particle size 2 µm is used in inkjet textile printing, where it achieves smooth dispersion and minimizes printhead clogging. Stability Temperature 180°C: Disperse Orange 42 with a stability temperature of 180°C is used in automotive synthetic fabric coloring, where it maintains fade resistance under continuous heat exposure. Molecular Weight 350 g/mol: Disperse Orange 42 with molecular weight 350 g/mol is used in microfiber dyeing processes, where it enables rapid fiber penetration and uniform tone distribution. Light Fastness Grade 5: Disperse Orange 42 with light fastness grade 5 is used in sportswear textiles, where it provides prolonged color retention under sunlight exposure. |
Competitive Disperse Orange 42 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
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Disperse Orange 42 has a history rooted in practical demand and chemistry. In our daily work, performance means much more than textbook theory. Through the years, I’ve watched our shop floor operators, line supervisors, and R&D chemists work side by side to fine-tune every batch, always aimed at meeting the evolving needs of textile dyeing. With every drum shipped, we think about who’s going to use it, what machines it’ll run through, and whether those results match our promise. The lessons we’ve absorbed from clients and our own teams shaped our approach to this product. Disperse Orange 42, sometimes called by its C.I. number 10385, finds itself in an interesting place — popular with polyester dyers who understand what reliable performance looks like.
For our own customers, numbers can only tell part of the story. Yes, we keep tight control over purity, shade, and particle size, using HPLC and TLC methods during quality checks. Typical shade index values and moisture content on dry basis remain consistent from batch to batch, thanks to careful raw material selection. Our Disperse Orange 42 delivers a bright, clear hue, showing good solubility and dispersion, which anyone running continuous dyeing machines or jet dyeing systems appreciates immediately. This stability comes from both the chemistry and the grind technology behind it. Having seen production across both larger and smaller runs, issues like agglomeration, settling, or even filter blockage serve as reminders that these details matter most.
A decade ago, a mill manager shared a problem with inconsistent shade in high-temperature dye cycles. After digging through logs and observing the process, we traced it back to batch-to-batch variations with a competitor’s product. Replacing it with our Disperse Orange 42, we saw their shade deviation shrink dramatically across polyester fabric lines, which cut re-processing labor and dye wastage. Part of the reason lies in our approach to micronization and pre-filtration, which gives customers a form that disperses rapidly in standard bath heating, even under tough water conditions. Such feedback doesn’t come from sample books or spreadsheets but from real meters dyed in working conditions. That’s why I often visit customers’ facilities, listen to their teams, and pass feedback along to our engineers — this loop of constant improvement gives practical value to what some might gloss over as simple “specs.”
Polyester dyeing shops rely on this product for its deep orange tone and level-dyeing behavior. Demand for athleisure wear and sport fabrics brought a fresh spotlight in recent years, since shade performance under harsh washing and light exposure matters more than ever. Our experience shows that well-produced Disperse Orange 42 supports consistent results from laboratory matches to large-scale orders. Some finishers blend it to reach custom shades, but many count on its standalone strength to deliver the right vibrancy on everything from filament yarn to microfibre. The product holds up during exhaust, continuous, and even rapid batch dyeing. Customers let us know it performs through long production runs, mornings or mid-shift, even if the process water varies in mineral content. Ask any operator on our line — the best dyes are those that make their jobs easier, not harder.
Problems don’t hide from the people who handle dyes daily. An operator once pointed out an unexpected luster difference after applying Disperse Orange 42 compared to an alternative. That prompted our R&D leader to adjust dispersant selection, smoothing out the effect. We consistently watch for stainers, migration issues, or hydrolysis concerns, because these can haunt a production line months later. We’ve learned that a dye can read flawlessly in a certificate, yet show uneven patchiness inside high-speed dyeing drums. This feedback loop, including direct calls from dyehouse engineers and SMS photos of issues, ensures continuous tweaks in our process. For us, visual results matter more than lab text. True control comes from understanding not just what went right, but what tripped up production last week. Whether it’s foam formation, settling on the walls of vessels, or slow pick-up on microfibre, fixing these gaps defines our daily work.
Looking across the range of disperse dyes, subtle differences matter more than outsiders might guess. In the past, some formulations made with other chemicals left too much residue or built up on yarn guides. Through lots of side-by-side running, we’ve seen that our grade helps protect equipment and avoids downtime. It also resists shade shifting, which can matter when day-to-day conditions in a mill change. High buildup and migration issues can plague alternatives, leading to uneven shades, borderlines, or unwanted tailing. These problems erode productivity and help no one. We’ve seen rotary screen printers and large-scale dyers remark on improved fastness with our dispersant package, which not only controls migration but helps substrate penetration without risking off-shade marks.
Competitors sometimes boast about theoretical strength or “universal” applicability, but day-in, day-out, local water variations and machine quirks put them to the test. Some will label a high-strength grade but ignore dispersibility, which challenges older machinery. Trust builds batch by batch, with every successful run that lets a finishing supervisor focus on output, not firefighting process hiccups. Comparing our product to earlier versions, we cut down on staining, reduced floating color, and almost eliminated gumming, answering repeated requests to make the operators’ workflow smoother.
A running joke between our QC team and production crew reflects the heart of this business — “There’s a million ways to ruin a batch, but only a few to make it right.” Our method always focuses on removing uncertainty for dyers. Every time we shift to a new drum or lot, routine checks on shade, particle size, and stability take place. This repetitive process may seem tedious, but gets the best out of every raw material delivery, regardless of season or climate. The pressure to raise productivity in mills means unexpected stops cost real money. Our customers often remark on the lower sediment formation, which lets them avoid mid-run downtime for screen cleaning. We try to learn from this, batch after batch, recognizing that for every mistake, an improvement must result.
Few talk about the practical problems textile dyehouses run into with disperse dyeing. Operators are stretched thinner every year, newer machinery runs faster, and customers push for more reproducible shades without cost increases. This drives the need for products that match large-lot repeatability, give sharp hues after even harsh treatments, and leave little residue behind. Water chemistry changes shift the reaction, heating fluctuations challenge deposition, and new fiber blends lead to higher process variability. The pressure doesn’t ease up.
The job then is to deliver a Disperse Orange 42 that copes with these technical realities — something our teams work on constantly. Sometimes, customers tell us about a problem with streaks on the edge of woven rolls, blaming machine settings. After examining samples, the answer points to an interaction between cationic modifiers in their fabric and dye penetrant levels. Tweaking particle size only fixed part of the issue. So we incorporated an optimized dispersant and, through trial and error, saw clear improvements on those lines. Our team’s willingness to stay with an issue until it’s solved makes all the difference. The way we see it, a dye product must never just look good in a brochure.
Years back, most managers only worried about price and color strength. Today, conversations quickly turn to waste management, effluent load, and safety. Regulations limit AOX generation, guide APEO-free requirements, and push manufacturers to drop certain carriers. Our plant committed early to making compliant grades, using low-odor raw materials and controlling byproducts through improved filtration and reaction balancing. Customers, especially those exporting finished goods, look for proof that the product helps them clear audits and meet Restricted Substances Lists. We worked through multiple rounds of third-party analysis, adapting formulations until we dropped suspect trace contaminants to near undetectable levels. Though these extra steps sometimes slow production, customers have more confidence placing larger orders, knowing they won’t get caught out during compliance checks.
Textile buyers today push for deeper shades but also want lasting vibrancy without fastness trade-offs. Our technical teams tune the formulation of Disperse Orange 42 to support high-energy, low-liquor processes now gaining ground. Polyester blends with polyamide, elastane, and even recycled PET fibers create fresh performance expectations. Most dye recipes expect stable, finely dispersed forms fit for both batch and continuous dyeing, and nobody wants to rework a shade because dust or floating particles led to off-color patches. We see larger orders and new customers wanting to shift to leaner dyeing lines, trusting that our longstanding approach avoids production stops and unnecessary cleaning cycles.
A lot of this demand appeared gradually, until suddenly every mill seemed to care what was in their effluent and how shade met customer requirements on arrival. One of our textile partners moved toward “zero discharge” lines and let us test early versions of our eco-friendlier dispersing agents. These direct trials with real waste streams taught us a lot more than formal lab tests ever could. Our new batches created less foam, clearer wastewater, and left the same color yield on resistant weaves. We didn’t reach it overnight, and early missteps forced us back to the drawing board, but those hard-won lessons benefit everyone using Disperse Orange 42 today.
No manufacturer can claim perfection across every lot and process. Some specialty print shops still face occasional migration in ultra-high-shear rotary jets, especially on unusual synthetic blends or when using certain auxiliary chemicals. We document these situations and ask for feedback, sending technical consultants to mills for troubleshooting. Some shade differences in certain water types reflect local variables outside anyone’s control. Rather than gloss over these issues, we make recommendations for better dispersant combinations or pre-treatment, based on both reported data and years of shop floor observation. Where requested, we adjust grind and dispersant package accordingly, supporting the partnership essential in modern dyeing.
Every new production order brings a different challenge, often from changes in fabric blends, heat patterns, or regulations tightening yet again. We don’t rest on a single formula. Being located near key markets allows us direct feedback, and our team stays ready to adjust for any new need. Collaborating closely with textile technologists, we transfer insights from one mill experience to another, improving performance one real problem at a time. The feedback cycle from textile customers forms the backbone of how Disperse Orange 42 has evolved over the years. We make every effort to design with end use in mind, whether that means lowering foam, raising light fastness, or modifying dispersant ratios to counter new finishing auxiliaries.
Making a product like Disperse Orange 42 isn’t about moving units off a shelf, but about forging reliance in a challenging, ever-changing industry. Our role as the manufacturer includes ensuring each drum earns its place in the dye pantry, not through lofty claims, but through everyday reliability and a proven willingness to respond to the real risks, changes, and demands that emerge. The only way to achieve this relies on keeping ears open, hands ready, and teams prepared to tweak, refine, and improve again and again. Those who use Disperse Orange 42 should have confidence that every batch stems directly from this hands-on approach and commitment to supporting the working mills, their people, and their long-term success.