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4-(Phenylazo)Diphenylamine

    • Product Name 4-(Phenylazo)Diphenylamine
    • Alias N,N-Diphenyl-4-phenylazoaniline
    • Einecs 212-518-0
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
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    Specifications

    HS Code

    753938

    Chemicalname 4-(Phenylazo)diphenylamine
    Casnumber 104-49-4
    Molecularformula C18H15N3
    Molecularweight 273.33 g/mol
    Appearance Red to orange powder
    Meltingpoint 175-179°C
    Solubility Slightly soluble in water, soluble in organic solvents
    Density 1.16 g/cm3
    Synonyms N-Phenyl-N-(4-phenylazo)aniline
    Pubchemcid 7517

    As an accredited 4-(Phenylazo)Diphenylamine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Amber glass bottle containing 25 grams of 4-(Phenylazo)diphenylamine, tightly sealed with a screw cap and labeled for laboratory use.
    Shipping **Shipping Description:** 4-(Phenylazo)diphenylamine should be shipped in tightly sealed, chemical-resistant containers, labeled according to international hazardous material regulations. The shipment must protect the chemical from light, heat, and moisture, and comply with all relevant transportation guidelines (such as DOT, IATA, or IMDG) due to its potentially hazardous organic nature.
    Storage 4-(Phenylazo)diphenylamine should be stored in a tightly sealed container, away from light, heat, and sources of ignition. Store in a cool, dry, and well-ventilated area, separate from oxidizing agents and strong acids. Ensure proper labeling and avoid exposure to moisture. Use chemical-resistant shelving and secondary containment to prevent accidental release or contamination.
    Application of 4-(Phenylazo)Diphenylamine

    Applications of 4-(Phenylazo)Diphenylamine in Industrial Manufacturing

    4-(Phenylazo)Diphenylamine is an established specialty intermediate widely utilized by industrial sectors requiring stable azo compounds with defined electronic structure and compatibility for demanding process conditions. As a direct manufacturer with deep formulation experience, we support high-purity supply for critical end-uses where stringent process and product quality requirements must be met. The following sections highlight where our material enables production in real, documented downstream sectors, detailing the relevant standards, technical integration, dosage protocols, and finished product types.

    1. Synthetic Lubricant Antioxidant Formulations

    This material functions as a secondary aromatic amine antioxidant in the production of premium-grade synthetic lubricants, specifically formulated for extended temperature stability and oxidative resistance in industrial and automotive lubricating oils. The electron-donating structure delivers radical-scavenging performance required for modern high-temperature fluids. Formulation teams adjust the addition level based on targeted ASTM oxidation test thresholds and the selected base oil chemistry.

    Industry compliance standards

    • ASTM D943 (Oxidation Characteristics of Inhibited Mineral Oils)
    • API Service Categories (SN, CK-4, FA-4, etc.)
    • ACEA Oil Sequences (E8, C5, etc.)
    • REACH Annex XIV/Substance Authorization (EU)

    Typical usage ratio

    • 0.1%–1.0% w/w of finished lubricant oil batch; adjusted upward for severe service fluids or extended drain intervals

    Downstream process integration

    • Direct addition during the lubricant blending stage, after base oil pre-heating but prior to final additive package incorporation

    Final product types

    • Synthetic compressor oils
    • Heavy-duty diesel engine oils
    • High-performance hydraulic fluids
    • Wind turbine gear lubricants

    2. Rubber and Tire Antioxidant Systems

    As an aromatic amine antioxidant, 4-(Phenylazo)Diphenylamine is widely formulated into high-stress rubber components needing resistance to heat, flexing, and pro-oxidative atmospheres. Manufacturers benefit from its tailored interaction with elastomers such as SBR, NBR, and natural rubber, mitigating degradation in high-cycle tire, belt, and gasket products. The precise inclusion rate depends on compound composition and regulatory approval for targeted finished goods and sales regions.

    Industry compliance standards

    • ISO 9001:2015 (Quality Management for Rubber Compounding)
    • OEKO-TEX Standard 100 (Class II limits for aromatic amines)
    • UN ECE R30/R54 (Pneumatic Tyre Performance Requirements)
    • EU REACH Restrictions, Annex XVII (Aromatic amine content limits)

    Typical usage ratio

    • 0.3%–1.5% w/w of total rubber compound; modified per elastomer type, silica versus carbon black loading, and end-use duty

    Downstream process integration

    • Addition during rubber compounding in internal mixers (Banbury or Intermix), upstream of final batch cooling, typically with the antioxidant and cure system

    Final product types

    • Passenger car and truck tires (tread and sidewall)
    • Industrial conveyor belts
    • Sealing gaskets and hoses
    • High-performance vibration isolators

    3. Electrical Insulating Varnishes and Wire Enamels

    In insulating varnishes and magnet wire enamels, 4-(Phenylazo)Diphenylamine serves as a thermal stabilizer and color-control agent, safeguarding polyimide, polyester, and epoxy resin matrices from premature oxidation and discoloration during curing and prolonged electrical service. This targeted role ensures uniform dielectric properties and prolongs service life of electrical equipment under heavy voltage and thermal cycling, in strict compliance with established international electrical material requirements.

    Industry compliance standards

    • IEC 60216 (Thermal Endurance Properties of Insulating Materials)
    • UL 1446 (System Electrical Insulation)
    • NEMA MW 1000 (Magnet Wire Standards)
    • RoHS Directive (2011/65/EU with amine and azo compounds regulation)

    Typical usage ratio

    • 0.05%–0.4% w/w in varnish or enamel formulation, based on resin type and required insulation class

    Downstream process integration

    • Incorporation during enamel or varnish resin mixing prior to solvent dilution; material is blended under controlled temperature to ensure uniform distribution before coating and curing cycles

    Final product types

    • Magnet wire enamel coatings
    • Motor and transformer insulation varnishes
    • Printed circuit board conformal coatings
    • Electrical appliance stator insulating finishes

    4. High-Performance Dye and Pigment Intermediates

    As a controlled azo intermediate, this compound supports production of complex high-performance dyes and pigments, particularly those required to achieve bright, stable colors in inks, coated textiles, and synthetic fibers. Processing plants integrate it in strictly regulated diazotization and coupling steps, ensuring final chromophore conversion meets purity and shade reproducibility requirements. Dosage varies with dye class and target molecular weight.

    Industry compliance standards

    • GHS/CLP Harmonized Labeling for azo compounds
    • OEKO-TEX Standard 100 (Ban on certain azo dyes in consumer textiles)
    • ISO 105 (Textiles—Tests for Color Fastness)
    • REACH Authorization List (Restrictions for hazardous aromatic amines migration)

    Typical usage ratio

    • Stoichiometric equivalence with coupling components; generally, 0.2–1.2 molar equivalents in final dye or pigment synthesis batch

    Downstream process integration

    • Added as the azo component under controlled pH and oxidizing conditions during the dye synthesis step; process sequence demands in-situ monitoring and batch-specific quality control before downstream formulation

    Final product types

    • Solvent dyes for gravure and offset inks
    • Textile disperse and acid dyes
    • Functional pigments for plastics coloration
    • Fiber-reactive dyes for performance fabrics

    5. Photographic Imaging and Photographic Paper Chemicals

    In the manufacture of photographic imaging paper and related sensitized coatings, 4-(Phenylazo)Diphenylamine plays a role as a chemical stabilizer within photographic developer solutions and as an anti-foggant. Plant production processes depend on tight purity controls to prevent secondary reactions, and formulators calibrate the addition per emulsion chemistry and finishing specifications, complying strictly with regional photographic chemical guidelines and environmental limits on amine residues.

    Industry compliance standards

    • ISO 18902 (Imaging Materials—Processed Imaging Film and Paper—Storage Practices)
    • Kodak QBM/QWL Quality Standards (for supplier acceptance in imaging products)
    • EPA 40 CFR Part 261 (Resource Conservation and Recovery Act for photographic chemicals)
    • REACH Annex XVII (Limitation of hazardous substances in consumer photo products)

    Typical usage ratio

    • 0.01%–0.08% w/w based on total developer composition; precisely balanced by emulsion type and developer regeneration steps

    Downstream process integration

    • Batchwise addition to the developer concentrate during compounding, in temperature-controlled mixing units prior to dilution and final packaging; must be added under inert atmosphere to maintain developer stability

    Final product types

    • Photographic printing papers
    • B&W and color film developers
    • Archival imaging chemical kits
    • Special-purpose reprographic media
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    Certification & Compliance
    More Introduction

    Introducing 4-(Phenylazo)Diphenylamine: Direct from the Manufacturer’s Floor

    What Sets Our 4-(Phenylazo)Diphenylamine Apart

    On the shop floor and in the production hall, every step we take with 4-(Phenylazo)Diphenylamine starts from raw precursors, passes through rows of reactors, and lands, by careful filtration, as a crisp, orange-red crystal. This is not a product that can hide behind obscurity. No trader, no middleman, ever deals with the essence of this compound quite like a manufacturer who stands over the batch, watching colors deepen as the diazotization proceeds. Over the years, we have kept a close eye on this process, not just for the outcome but for what the outcomes signal in practical use. We understand why end industries—dye houses, laboratories, electronics specialists—keep coming back with orders that echo last year’s, but ask: Can you make it purer? Will this lot be as consistent as the previous shipment? The lessons we have learned are not theoretical; they stem from real batches, real challenges, and genuine partnerships with technical teams around the world.

    Real-world needs shape the way 4-(Phenylazo)Diphenylamine leaves our plant. This chemical doesn’t conform to the same tired model every time. We have tuned crystal habit, moisture content, and level of by-product residues. The standard product, commonly known for its brilliant coloration and wholesale stability in organic solvents, emerges from our reactors at a minimum purity of 99%. Our team carefully tracks batch consistency; even small variations in conversion yield get investigated, because someone, somewhere, has a process that counts on high standards. Over time, requests have come for 4-(Phenylazo)Diphenylamine in different granulations, for ease of handling, less dust, and improved pourability. Our technicians handle these needs with tweaks on the process line, not by passing it off to another facility. A direct dialogue between the customer and the plant floor keeps the material practical and adaptable for each intended use.

    Use Cases: Results Over Rhetoric

    In our lab and in customer facilities, 4-(Phenylazo)Diphenylamine often appears as an intermediate, mixing into dye formulations where shade depth, light fastness, and resistance to environmental attack matter most. We have seen how dye houses rely on the consistency of our material to avoid batch-to-batch shade drift. For an azo dye intermediate, there’s little room for careless mixing or uneven blending; the depth of orange-red color caught in the crystals shows up in the final fabric or pigment. In colorants for plastic laminates, this compound finds a home because it withstands temperature cycles and doesn’t leach in most applications. We hear from customers in Asia and Europe who echo the same requirement: Keep the product dust-free, maintain a reliable bulk density, and ship it in packaging that survives transit across two continents.

    The compound extends itself quietly to analytical labs, where it serves as part of calibration standards for organic nitrogen. Here, any hint of contamination throws off critical readings, and we field questions weekly from purchasing teams about our certificate-of-analysis transparency and the methods we use in our in-house lab. We show GC traces and TLC profiles, not because we must, but because there’s trust built up from delivering what’s promised. In the area of advanced electronics, the molecule has found unexpected traction. Our process engineers were approached by a manufacturer hoping to use 4-(Phenylazo)Diphenylamine as a charge-transfer complex precursor in prototype organic transistors. What started as a speculative inquiry became a steady project, with several trial lots fine-tuned for this new application.

    The Manufacturing Difference: Experience That Carries Forward

    As a direct producer, the rhythm of daily plant life builds more than just muscle memory; it forges a sense of responsibility. We have seen alternatives to 4-(Phenylazo)Diphenylamine, but their key differences show up quickly. Some companies use Toluidine Orange or 4-Aminobiphenyl intermediates, thinking it will replace the unique balance of stability and color. These substitutes often leave color conformity just out of reach or introduce environmental issues when scaled up. Our product starts with aniline and nitrosobenzene, every tank cleaned and line flushed to preserve integrity. We maintain close, hands-on inspection of every step, including routine running of HPLC chromatograms to ensure no critical impurities sneak through to the dry cake. Our customers report shorter batch development times and fewer unexpected shade shifts. They’ve told us solutions come faster when they can call directly, speak to a chemist who knows the reactor by its scars and quirks, and tweak specifications before the next truck departs.

    We have responded to pressures around regulatory standards, especially with Europe’s REACH and the evolving requirements in North America. Documentation here does not rest on assumptions, nor do we copy templates from third-party providers. Everything attached to your lot number, from impurity profile to shelf-life testing, tracks back to our own quality lab. In an age of generic material and cut corners, our teams push against the temptation to forgo lot-to-lot traceability. We recall one incident, years back, when a single bag arrived at a dye plant off-color. We traced that odd batch to a pump seal failure and ended up tightening both the maintenance schedule and our data logging. Our promise is simple: you learn more, and we learn quicker, when nobody stands between us and the product.

    Comparing Alternatives: Clear Choices from Practical Experience

    The landscape brims with chemicals vying for the same role as 4-(Phenylazo)Diphenylamine. Some claim lower price points or easier supply, but over the years, we have tested dozens of comparables. By direct head-to-head evaluation, only the parent molecule holds its color after exhaustive UV exposure. In high-precision uses, such as research synthesis or critical calibrations, the structure’s rigidity under light, heat, and solvent swings sets it apart. Cheaper analogues rarely stand up to cyclic environmental testing and often fail in applications needing molecular-level purity.

    Costs matter. But repeated failures with cheaper substitutes soon erase the immediate advantage. We supply to textile colorists who have run pilot batches with alternate intermediates, thinking a cheaper compound would stretch their margins, only to land back on our order books after unexpected fading, poor blending, or new byproduct regulations hit their supply chains. Learning comes with mistakes, and our long-term partners value the reduced downtime as much as the direct price of our material. We invest in customer trials, supplying small research lots for evaluation, which helps technical teams confirm that what they order matches what actually works at scale.

    Specifications Grow from Need, Not From Spec Sheets

    Spec sheets start the conversation—the real details emerge after feedback from users. Over years, we have received requests for finer grind, adjustments in residual solvent content, or even changes to packaging method due to changing warehouse policy at a customer’s plant. We answer these with hands-on changes in our production halls, never by reselling or repackaging someone else’s stock. Our most requested model comes as free-flowing crystalline powder, bright, nearly dustless, with a bulk density high enough to avoid bridging in feeder bins. In dye work or pigment mixing, flow matters, and our operations team keeps a sharp eye on both particle size and storage stability.

    By rooting our improvements in actual demand, not just the brochure, we avoid a one-size-fits-all mentality. Food and pharmaceutical users have flagged limits on trace contaminants, so we maintain strict separation of processing lines and test each batch for known proximity hazards. For technical-grade users, requirements may loosen slightly; yet, most still expect a base purity exceeding 99%. Our response is the same whether a kilo is heading to a colorant pilot or a ton to a bulk pigment facility: direct communication, full transparency, and a readiness to adapt.

    Shipping, Storage, and Long-Term Consistency

    4-(Phenylazo)Diphenylamine does not travel well in substandard packaging. From bitter experience, we have seen what happens if moisture seeps through or if material cakes after a month in a humid port. Our teams have refined storage and shipping procedures after live feedback, working hand-in-hand with logistics partners to ensure triple-layered barriers protect every shipment. The product's shelf life, often stretching beyond two years under industry-standard conditions, ties directly to packaging quality rather than intrinsic instability. Our approach includes routine warehousing audits and hot-spot sampling in transit, not just static assumptions taken at the day of dispatch.

    On arrival at a customer site—often after weeks on the water—bags get put to the test for clump-free flow and color integrity. Reports of caking or irregular color are flagged immediately, with quality teams ready to replace or rework any shipment that falls short. Feedback doesn’t just get logged; it goes into the next cycle of improvements on process and packaging. We store retain samples for every batch, so if a problem arises, we can match conditions and track down any deviation.

    Trust, Built One Batch at a Time

    Over decades, we have come to see recurring themes in user feedback: reliability, batch-to-batch steadiness, and practical advice when application demands shift unexpectedly. As manufacturers, we do not hide behind generic claims or chase quick wins with questionable shortcuts. Every improvement to our process comes from chalkboard calculations, late-night maintenance calls, or daylight tweaks to the recipe. Our business values, learned through real production snags and customer conversations, put authenticity and practical expertise above marketing language.

    Customers turn to us not for bland assurances, but for above-board data on contaminants, advice on how to blend or dilute the material, and honest comment on where a rival product might actually suit them better. Relationships last years because we handle them with as much care as the batches moving out the door. Old notes from a decade ago help us trace whether a subtle change in trace impurity profiles affects a specialty coating. We keep those notes in our system, hoping they never need to be reviewed, but ready all the same.

    Going Forward: Innovation by Direct Experience

    As technology grows and applications for 4-(Phenylazo)Diphenylamine widen, we are not content with standing still. Our R&D team runs pilot-scale trials based on direct input from customers—no borrowed white papers, just plain-spoken goals about better flowability or compatibility with new solvent systems. We have experimented with modified crystallization steps to increase purity, and when customers mention waste reduction, we look for tweaks in yield, water consumption, and even solvent recycling on the plant floor. Every process innovation comes back to material that is easier to use, easier to store, and works in the field—not just on paper.

    Years back, a major shift in demand forced us to rethink our reaction times and temperature profiles to offer a grade more suitable for heat-sensitive applications. With no template to follow, our chemists and line operators teamed up, running small batch tests until the right combination emerged. We keep that spirit alive: every challenge, whether from tighter regulations or from a customer’s new technical hurdle, starts a round of experiments within our own plant.

    Conclusion: Product Value Grows with Experience, Not Hype

    4-(Phenylazo)Diphenylamine stands as much for reliability as for technical specification. Every lot leaving our gates carries the character of countless small improvements—the steady hand of an operator, the running tally of batch logs, and the shared pride at knowing a mill overseas or a lab down the road depends on the choices made here. At its core, this product means more than its structure or even its color; it means trust built up over time, with no obscuring layers between user and maker. As users evolve, so do we, always ready to engage questions, meet new technical barriers, and carry lessons forward from one delivery to the next. Through regular conversation and a willingness to learn, our product remains more than a line on a catalog—it is a solution grown through experience, finished with detail, and carried into the future by those who make it, use it, and demand more than the ordinary.