|
HS Code |
843135 |
| Chemical Name | Sudan Orange |
| Alternative Names | Solvent Orange 7, Sudan III |
| Chemical Formula | C17H17N3O |
| Appearance | Reddish-orange powder |
| Solubility | Soluble in fats and oils; slightly soluble in ethanol |
| Melting Point | 201-204°C |
| Usage | Dye for plastics, oils, waxes, and hydrocarbon solvents |
| Cas Number | 85-86-9 |
As an accredited Sudan Orange factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | A 25g amber glass bottle labeled "Sudan Orange" with hazard symbols, product details, and tightly sealed to prevent contamination. |
| Shipping | Sudan Orange should be shipped in tightly sealed containers, labeled as hazardous material according to relevant chemical regulations. Protect from moisture, heat, and incompatible substances. Follow all applicable transport guidelines, including UN number (if assigned), and ensure proper documentation and packaging to prevent leaks or spills during transit. Suitable for ground or air shipment. |
| Storage | Sudan Orange should be stored in a tightly sealed container, away from moisture, direct sunlight, and sources of ignition. Keep it in a cool, dry, and well-ventilated area, separate from incompatible substances such as strong oxidizers. Ensure proper labeling and access is limited to trained personnel. Follow all relevant safety and regulatory guidelines for hazardous chemicals. |
Competitive Sudan Orange prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615371019725 or mail to admin@sinochem-nanjing.com.
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Tel: +8615371019725
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Producing colorants like Sudan Orange puts a factory’s quality system and process discipline to the test. Over the decades, our teams pressed through the relentless demands in pigment chemistry, fine-tuning not only the synthesis itself but also the way batches are handled, post-treated, and monitored for unwanted byproducts. In our line, Sudan Orange is known as model SO-27—a monoazo dye chosen across a range of industrial applications for its strong chromatic character, impressive purity, and consistent particle distribution. Just as important as the product’s quality, manufacturing at scale means controlling risks, verifying raw material sources, and preserving traceability. Backed by years in aromatic compound purification, we shape every step in the chain, keeping contaminants to the absolute minimum and ensuring the finished product stands up under strict analytical scrutiny.
Chemical plants can share a common blueprint, but experience teaches that no two runs are really identical. At our facilities, batches of Sudan Orange undergo repeated property checks—such as color intensity, melting point, and volatile residual analysis. We control variables tightly during synthesis to achieve a bold, well-defined orange hue that blends stably in solvent-based industrial mediums, even through extended exposure to light and heat. Industries pick our Sudan Orange because the color stays stable and particles remain well-dispersed in solution, which lets downstream users skip many extra steps in their own processes. Fine tuning particle size unlocks faster mixing, sharper tinting strength, and less caking in storage. We document every one of these improvements using batch records and internal lab reports, opening them for customer audits whenever needed.
Our SO-27 is not designed to tick boxes on a generic spec sheet—we develop it with the hands-on knowledge that bottlenecks often arise during blending, dispersion, or conversion into masterbatches. One of the most common pain-points in pigment processing is agglomeration; we have responded by refining milling parameters and surface treatment conditions, narrowing the particle size distribution to between 3 and 8 microns depending on order requirements. We’ve invested in both precision filtration setups and high-purity feedstocks for the diazo- and coupling process, so the final powder resists unwanted color drift, and avoids introducing excess salts or metallic residues.
A persistent problem across the sector is variability between lots. Unlike a reseller drawing from multiple makers, we control raw materials every step from incoming drum to finished canister and assign individual production runs full QC characterization. Certified color measurements use both UV/Vis and laboratory spectrophotometry—these calibrations help guarantee repeatable shade from batch to batch, reducing costly downstream rejects for our partners who demand process safety.
What’s it like for an operator using Sudan Orange in the field? Many of our customers in plastics, industrial coatings, and specialty inks rely on blends that carry not just color, but real chemical and heat resilience. Our SO-27 handles hot-melt processing, solvent-based formulations, and can be introduced into polyolefin matrices without clumping or fading during extrusion cycles. In the textile and leather sectors, effective dyeing means removing all trace of moisture and maintaining sharp tinting power with minimal migration or bleeding; we have worked with customers to tune Sudan Orange’s solubility profile so it disperses evenly without sticking, streaking, or fading after repeated washes or UV exposure.
Laboratory technicians depend on traceability, so our standard workflow creates a trail from the source of each raw component, through the synthetic reaction, purification, and post-blending. Should questions arise about performance, our records let us rapidly investigate and pinpoint any deviations, keeping confidence high for all end-users.
Chemical manufacturers today can’t ignore growing scrutiny around azo-based colorants. Regulatory bodies in several countries place strict limits on certain aromatic amines and require thorough testing for residuals. We built our quality system not just for compliance, but to stay ahead of legislative shifts. Continuous investment in analytical technology—like high-pressure liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GC-MS)—gives us accurate, routine checks on amine impurities and unreacted aniline content. If an order specifies ultra-pure Sudan Orange, we respond by extending purification and running extra validation, not by simply splitting batches or diluting with fillers. This puts the control in the manufacturer’s hands, not leaving things to chance.
An emerging topic is sustainability. Customers now ask for pigment data on emissions, waste-stream handling, and even cradle-to-gate carbon impact. With Sudan Orange, we have tackled these demands head-on, re-evaluating our solvent recovery circuits and heat integration schemes to reduce both costs and environmental impact. Waste reduction is an ongoing pursuit, requiring both new engineering and practical adjustments, such as minimizing rinse cycle volumes and reclaiming off-spec batches where feasible into lower-grade applications. In the rare event a lot falls out of spec, we have dedicated safe disposal channels and document every disposal event for transparency.
Comparing Sudan Orange to other bright colorants often means looking closely at both performance and chemistry. While a generic orange dye may use broader-ranging azo, anthraquinone, or pyrazolone structures, SO-27’s structure delivers a deeper orange shade with a stronger red undertone, making it particularly favored for shades that need intensity without excess loadings. Unlike anthraquinone oranges, Sudan Orange processes at lower temperatures without risk of decomposing, and it holds its color even when exposed to light, air, and common chemical reagents.
Our finished SO-27 model distinguishes itself from others on the market by purity standards—lower levels of unreacted aromatic amines and halogenated byproducts mean sharp color that stays intact through multiple processing cycles. Many “off the shelf”, repackaged grades sold by traders or small mixers don’t meet these metrics for trace solvents and heavy metals. Our labs routinely report aminobenzene content below 15 ppm and screen out several dozen known contaminants to avoid flagged compounds that could cause recalls or quality failures.
Handling also sets SO-27 apart. Some commercial pigments arrive as clumpy, poorly dried powders that struggle in sealed feeding systems or force extra filtration downstream. Our process targets near-flowable granularity, reducing dusting and residue buildup, and making the product easy to integrate in modern feed systems. In masterbatch compounding, this translates to shorter blend times and fewer interruptions for filter cleaning or troubleshooting mixer jamming.
Over the years, customers shared feedback from countless settings—from mid-sized resin compounding plants and specialty paint workshops to technical textile dyehouses. In all these places, breakdowns in pigment performance often trace back to inconsistency or excessive contamination. Operators using our Sudan Orange report minimal filter clogging on continuous lines and strong, lasting orange tint in extruded polyolefins. Because of the careful consistency run after run, color matching doesn’t require endless adjustments to dosing or mixing time, which saves labor and reduces waste.
We’ve tracked cases in industrial coatings where SO-27 gave richer shades than generic alternatives, especially in outdoor paints and protective lacquers that see high UV exposure. Textile processors operating on fast cycle dyeing orders have written that our Sudan Orange saves them time on re-striking shades, because they don’t face sudden fading or color bleeding—problems that still plague low-cost alternatives. Some partnership projects in the research sector called for dye markers resistant to solvent attack and repeated sterilization; SO-27 performed through autoclaving and ethanol drenching with minimal color shift.
Inconsistencies in available feedstocks or equipment downtime can threaten batch reliability for pigments like Sudan Orange. To guard against this, we keep backup process lines and dual-sourcing contracts with approved suppliers, and regularly audit them. Starting from the sourcing of primary amines through to coupling agents and solvents, every lot receives internal certification before entering the main plant floor. The on-site lab verifies that both starting and end materials meet strict thresholds for impurities, moisture, and reactivity.
Scaling production without sacrificing performance requires more than automated controls. We maintain close communication between production chemists, QA teams, and maintenance engineers. Whenever an anomaly pops up—an off-smell, unexpected color shift, or yield fluctuation—we launch joint troubleshooting sessions, review trend data, and analyze chemical markers in each suspect lot. Over time, this factory culture of constant attention helps us shut down quality drift before it reaches the packing stage.
Looking outside our own walls, we have learned from working directly with equipment makers and end users how pigment properties can change during storage, transport, or compounding. To tackle this, we upgraded our packaging lines with multi-layer barrier bags and tamper-resistant seals, reducing moisture incursion and contamination. Storage advice draws on firsthand failures and lessons from field troubleshooting—our guides specify temperature, humidity, and shelf-life to minimize surprise clumping or dusting for our partners.
Producing a well-recognized pigment like Sudan Orange is a process shaped by pressure from each corner of the supply chain. Customers submit ever-more-detailed compliance forms; tech departments want advanced analytics and transparency. We answer by sharing not only Certificates of Analysis but also chromatography scans, impurity maps, and a narrative of each batch’s production flow—no secrets, only fact-based traceability.
Our internal improvement teams regularly benchmark our SO-27 output against both in-house standards and the wider global market. Continuous feedback loops come from customer returns, field audits, and even regulatory spot-checks. Whenever a discrepancy surfaces—say, a slight shift in tinting power or unexpected residue—we trace backward through suppliers, process metrics, and operator logs to adjust protocols, strengthen training, and improve end results.
Not every improvement comes from technology upgrades. Sometimes, a keen-eyed warehouse supervisor or line worker points out a missed step or a clever way to streamline particle separation, cut packaging waste, or improve labeling clarity. We treat these frontline contributions as vital, giving timely credit and implementing promising suggestions without delay.
Relationships matter when the final pigment decides a finished product’s quality. Our regular site tours for customers and partners let buyers see every stage of Sudan Orange’s production, from raw charge to purified, packed pigment. We share lab records and are open to full-traceability audits because this kind of confidence underpins lasting business.
Mistakes, when they happen, are openly recognized and communicated downstream—recalls, customer notifications, and proactive system corrections keep our reputation for reliability strong. Experience has shown that transparency builds resilience, helping all parties manage the fast-changing landscape of pigment regulation and end-use applications.
Tightening controls on synthetic pigments highlight long-term shifts in manufacturing expectations. Governments want more detail about raw feedstock origin, composition, and downstream fate; buyers ask tough questions about trace metals, non-intentional byproducts, and potential human exposure risks. Our production lines for Sudan Orange meet and often exceed documentation and batch record norms, making third-party verification and cross-checking part of our regular routine.
Our years in the pigment sector taught us the cost of noncompliance—shipping delays, returned goods, or investigations can wipe out the advantage of a price edge. We now submit product dossiers proactively to customers and regularly review emerging chemical control directives from REACH, the US EPA, and Asian regional authorities. In some cases, our technical staff help downstream partners prepare their own compliance paperwork or testing schedules. This upstream support shortens lead times and reduces process friction.
Even as new technologies shift parts of the pigment industry, trusted synthetic colorants hold a critical role for both established and expanding sectors. Sudan Orange’s resilient color fastness and established properties make it a regular choice for applications where sharp visibility, strong coloring, or distinct branding impacts are needed. Field-tested performance in extrusion processes, solvent resistance, and heat handling keeps the product in demand. The specific model we make isn’t just another pigment—it is the outcome of persistent effort to build a finished material that serves not just immediate production needs, but also long-term reliability and compliance criteria.
Many new colorants appear in the lab with promising data, only to struggle with batch scale-up, process variability, and stability challenges once they hit an industrial environment. Our Sudan Orange, refined over numerous production campaigns, demonstrates that stable results depend as much on factory discipline and responsive quality systems as on clever chemistry.
We see clearly the growing demand for pigment products that deliver performance and compliance hand in hand. Our approach to Sudan Orange—testing, troubleshooting, improving batch-to-batch—reflects a mindset of continuous progress. Ongoing investment in analytics, process safety, and workforce training lets us deliver what customers want: a pigment they can trust to do the job, supported by a manufacturer who stands ready to troubleshoot, improve, and support from start to finish.
This commitment shapes not only the final color in a customer’s product, but also the long-term strength of their supply chain, public reputation, and regulatory security. As demand grows for more transparent, precisely manufactured ingredients, our Sudan Orange stands as a practical example of what thoughtful, experienced production can achieve. Those wanting to learn more are welcome to visit, audit, or partner for custom specifications, direct from a manufacturer who knows the story behind every batch.