1-(3'-Nitrophenyl)-3-Methyl-5-Pyrazolone

    • Product Name: 1-(3'-Nitrophenyl)-3-Methyl-5-Pyrazolone
    • Chemical Name (IUPAC): 1-(3-nitrophenyl)-3-methyl-2,4-dioxo-1,2-dihydropyrazol-5-yl
    • CAS No.: 702-97-6
    • Chemical Formula: C10H9N3O3
    • Form/Physical State: Solid
    • Factroy Site: No.968 Jiangshan Rd., Nantong ETDZ, Jiangsu, China
    • Price Inquiry: sales7@boxa-chem.com
    • Manufacturer: Nantong Acetic Acid Chemical Co., Ltd.
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    Specifications

    HS Code

    535019

    Chemical Name 1-(3'-Nitrophenyl)-3-Methyl-5-Pyrazolone
    Molecular Formula C10H9N3O3
    Molecular Weight 219.20 g/mol
    Cas Number 89046-38-4
    Appearance Yellow crystalline powder
    Melting Point 215-220 °C
    Solubility Slightly soluble in water, soluble in organic solvents
    Boiling Point Decomposes before boiling
    Purity Typically ≥98%
    Storage Conditions Store in a cool, dry place, away from light
    Synonyms 3-Methyl-1-(3-nitrophenyl)-2-pyrazolin-5-one
    Structural Formula C10H9N3O3
    Hazard Statements May cause eye and skin irritation

    As an accredited 1-(3'-Nitrophenyl)-3-Methyl-5-Pyrazolone 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 1-(3'-Nitrophenyl)-3-Methyl-5-Pyrazolone, sealed with a tamper-evident cap and labeled for laboratory use.
    Container Loading (20′ FCL) 20′ FCL container loading: 1-(3'-Nitrophenyl)-3-Methyl-5-Pyrazolone packed in sealed drums, on pallets, ensuring stability and safety.
    Shipping 1-(3'-Nitrophenyl)-3-Methyl-5-Pyrazolone is shipped in tightly sealed, chemical-resistant containers, compliant with all safety and transport regulations. Protective packaging prevents breakage, exposure, and moisture ingress. Appropriate hazard labeling is applied. Shipping typically occurs via ground or air freight suitable for restricted laboratory chemicals, ensuring prompt and secure delivery to authorized addresses.
    Storage Store **1-(3'-Nitrophenyl)-3-Methyl-5-Pyrazolone** in a tightly sealed container in a cool, dry, well-ventilated area, away from light and incompatible substances such as strong oxidizers. Keep the storage area secure and label all containers clearly. Avoid exposure to moisture and heat. Ensure proper handling with personal protective equipment to prevent skin or eye contact.
    Shelf Life 1-(3'-Nitrophenyl)-3-Methyl-5-Pyrazolone is stable for 2–3 years when stored in a cool, dry place, away from light.
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    Certification & Compliance
    More Introduction

    1-(3'-Nitrophenyl)-3-Methyl-5-Pyrazolone: Direct Manufacturer’s Perspective

    Bringing 1-(3'-Nitrophenyl)-3-Methyl-5-Pyrazolone to Market

    Not every compound makes it through the bench work and into full production. Plenty of candidates lose out due to tough stability, yield, safety, or scale-up questions. From a manufacturing standpoint, 1-(3'-Nitrophenyl)-3-methyl-5-pyrazolone is compelling both for its performance and what it teaches about problem-solving at the plant. Anyone who’s spent time in a chemical production facility knows how real-world messiness overrides armchair chemistry. Success is more than purity or yield statistics; it's about meeting demand, keeping the process robust, and delivering a reliable product with each batch.

    Understanding Its Features as a Manufacturer

    This compound stands out for its structure: a nitro group positioned at the meta (3') location on the phenyl ring, attached to the pyrazolone core. Subtle as that might seem, the position of the nitro substituent influences solubility, reactivity, and thermal behavior. In large vessels or reactors, even minor position changes can shift the entire downstream process. We see the reality of this in the reaction mass during synthesis, in purification yields, and in analytical fingerprints. Pyrazolone derivatives can behave unpredictably, especially when nitro groups enter the mix. The 3'-nitro isomer delivers sharp, consistent melting points and distinguishes itself in both its color and stability profile. Batch inspection reflects these differences: crystalline, yellowish solid with tight lot-to-lot purity, often in the 98% and up range. Aromatic nitro compounds sometimes lose their uniformity under tough conditions, but this molecule has proven tough enough for repeat production cycles.

    Key Differences from Other Pyrazolones

    Over years of producing pyrazolone families, small structural shifts have meant the difference between a smooth run and a nightmare of blocked filters or stubborn tars. Moving the nitro group from ortho to meta, as in 1-(3'-Nitrophenyl)-3-methyl-5-pyrazolone, removes recurring issues with resinification and avoids excessive by-products that trouble purification. Less fouling in the system translates directly to higher throughput per plant hour. The methyl group at position 3 of the pyrazolone ring also affects solubility in common solvents and gives more control when you’re forming salts or derivatives. Compared to cousins with nitration at the 2' or 4' spot, the meta-nitro isomer holds its color better and avoids some of the safety headaches that dog the ortho versions. Less off-gassing and more consistent particle size help with scaling up tonnage without surprises.

    Real-World Usage in Synthesis and Applications

    From direct feedback, most downstream partners use 1-(3'-Nitrophenyl)-3-methyl-5-pyrazolone as an intermediate for paints, colorants, and specialty dyes. The robust azo-coupling profile under standard conditions lets formulation teams introduce precise color shades with good fastness. Technicians appreciate it during pilot work, since fewer impurities show up during the finishing steps. The consistency at scale—right from charging reactors through wet cake isolation—gives good color register batch after batch. Some use it as a building block in pharmaceutical research, exploring the pyrazolone core for biological activity. Pharmaceutical R&D usually zeroes in on supply stability, trace-level impurities, and batch homogeneity. Nothing sets them back faster than a surprise polymorph, off-color batch, or accidental inclusion of by-products. Our plant aim is to avoid those pitfalls from the start.

    Model and Specifications Rooted in Actual Production

    Instead of throwing around numbers for catalog’s sake, we look at practical specifications from accumulated production runs. Typical melting point falls in a narrow window, checked against in-house standards and confirmed by third-party labs if a customer requests it. Particle size cutting from the drier is calibrated to fit most end-user requirements for dispersion and blending. Each kilogram receives full chromatographic and spectroscopic monitoring. Most impurity thresholds sit well below standard regulatory cutoffs, not because of paperwork but due to real headaches that pop up when overlooked by-products gum up equipment or spoil final uses. All material is handled by teams trained in managing aromatic nitro compounds—which brings real-world lessons about safe material transfer, drum labeling, and air extraction. The packaging team uses liners proven to withstand nitro migration or static build-up during long shipping routes, based on first-hand experience.

    Why Real Manufacturing Matters

    It’s a different world on the shop floor. Engineers and plant operators see firsthand how shortcuts elsewhere lead to out-of-spec batches, missed delivery, and lost trust. Sourcing 1-(3'-Nitrophenyl)-3-methyl-5-pyrazolone directly from a genuine manufacturing line eliminates guesswork. Documenting every step from raw materials, through reaction, to finished product storage doesn’t just look good on paperwork—it’s required by auditors, buyers, and our own troubleshooting practices. Having full custodianship means catching deviations before they snowball. Any odd smell, color shift, or particle change will throw up a red flag. No reseller or trader will ever have the same insight into how repeated cycle runs affect product performance, or how even minor contamination in a reactor will echo through to batches made weeks later.

    On the Safety of Aromatic Nitro Compounds

    Aromatics with nitro groups, especially ones positioned on the phenyl ring, bring both value and challenge. Handling them in live production lines under top environmental controls is non-negotiable. Someone at a lab bench, or behind a forwarding desk, won’t grasp the reality of keeping air emissions, dust, or residues down to negligible levels. We learned to upgrade scrubbers, invest in room air monitors, and retrain staff after seeing how quickly airborne particles can spread. Storing finished product under controlled, temperature-stable environments ensures customers avoid surprises on arrival. Bulk shipments move in drums lined for nitro-sensitives and carriers briefed on compatibility. Direct, real-world exposure to risks makes a difference in both how the product ships and in the level of technical support customers demand.

    Choosing Supply Based on Real Outcomes

    Lab-scale chemistry offers plenty of “promising intermediates” on paper, yet only compounds backed by unbroken supply lines, robust safety, and predictable characteristics make it long-term. In more than one case, downstream processors switched sources to direct manufacturing because small but persistent issues—grayish tint, skewed particle size, higher static build-up—damaged their final formulations. Whether it’s a spray dye plant or a pharma research group, trouble hits at the worst time. Our team has seen customers troubleshoot color drift, incomplete dispersion, and haziness in the end product only to trace the issue to poorly controlled upstream synthesis. In each case, resolving these issues means true vertical control: raw material sourcing, strict in-process monitoring, and lot-based traceability.

    Differences You Can See and Measure

    Compared to 1-(4-nitrophenyl)-3-methyl-5-pyrazolone and other isomers, the meta nitro derivative tends to ship cleaner both in terms of bulk appearance and instrument detection. We see fewer recurring requests for additional purification, polishing, or deep-dive impurity specs from users who’ve switched away from less tightly controlled sources. Its reactivity during azo coupling also shows sharper endpoints, faster processing, and less formation of colored tars in both small and large-scale colorant manufacture. Plant records confirm lower frequency of customer complaints about clumping or inconsistent micronization for the 3’-nitro batch. As operational staff, that means fewer stops, less rework, and faster, more stress-free shipments.

    Dealing with Scaling Pressures and Innovation

    No production day stays routine for long. Shifts in global demand may send a planned quiet week into overtime, especially for key intermediates like 1-(3'-Nitrophenyl)-3-methyl-5-pyrazolone. Scale-up can strain everyone—QA, logistics, maintenance. We responded by automating more process controls, adding surrogate endpoint monitoring, and toughening our sampling plans. The technology team reworked standard work-ups to improve both energy utilization and waste handling, eliminating most persistent bottlenecks. Each improvement usually follows a failure somewhere, but that’s the only way systems become more resilient. Lessons harvested from repeated cycles help new projects—whether it’s tweaks in crystallization, optimizing filter beds, or rebalancing solvent flows.

    Customer Support Derived from Real Experience

    Technical teams reach out not just looking for a drum, but for support around process optimization or impurity suppression. Anyone can send a certificate of analysis; not everyone can walk through possible process tweaks after something unusual shows up during quality control. Our team pulls data from real batches, not just theoretical purity specs. That means we support troubleshooting with insight into possible sources for every minor impurity, transitions between different synthesis lots, and options for wash protocols. Regular communication with R&D teams at partner sites sharpens everyone’s technique and, in the process, highlights points in production that could introduce or reduce color drift, haze or caking.

    Regulatory Commitment and Environmental Focus

    Plant life is shaped by more than just maximizing output. Production records are written in the language of permits, emission records, and waste manifests. Producing aromatic intermediates such as 1-(3'-Nitrophenyl)-3-methyl-5-pyrazolone brings hard scrutiny from environmental authorities—scrutiny passed on to buyers and users downstream. We work with regulatory documentation built from actual emissions, not just modeled data, and maintain direct liaisons with agencies and independent auditors. Every tank, run, and flush is tracked; all waste is documented and, wherever possible, minimized at the source. Doing this isn’t just about permissions—it’s essential for both safety and long-term operation of the production line. Customers committed to their own compliance issues rely on upstream transparency and production logs to demonstrate due diligence.

    Process Control Adds Real-World Value

    Maintaining a quality product like this one means overseeing equipment from glass-lined reactors to HEPA-filtered driers. Operators spot deviations in color, particle flow or odor faster than automated alarms do. That on-the-ground attentiveness reflects back in every order shipped. Instrumental analysis, such as HPLC and NMR, supports what plant workers detect by eye and by experience. These systems support quick interventions and lend confidence when delivering material suited for high-purity demanding applications. Full traceability exists for each batch—users can trace every drum back through every class of raw materials and processing variable. As a result, purchasers avoid silent, hidden changes that can undermine months of downstream effort.

    Collaborating for Development and Scale

    Often, customers approach us to switch from existing blends or less specialized material to 1-(3'-Nitrophenyl)-3-methyl-5-pyrazolone due to persistent trouble in their own operations. Our R&D and scale-up teams dive into technical support or tailor small process modifications for customers. Changes to starting materials, tweaks in crystallization steps, or modifications to final drying can produce significant gains in handling and usability for partners. Building off first-hand knowledge about both our process and the needs of demanding users, we can suggest process tweaks that save time, reduce waste, or improve end application performance. This kind of collaboration happens on solid ground—a long-term relationship founded on mutual experience and proven results rather than catalog descriptions.

    Advantages that Go Beyond a Catalog Entry

    Anyone with chemical industry perspective knows that small details make the difference between consistent, smooth production and crisis management. For users relying on 1-(3'-Nitrophenyl)-3-methyl-5-pyrazolone, it's not just about the initial purchase price or glossy spec sheets. It's about knowing the compound runs well in actual manufacturing at every stage, that supply lines hold up under pressure, and that technical support comes direct from those who make the product daily. Years of accumulated learning filter into every run, every sample, and every new process developed around this compound.

    Rooted in Ongoing Practice, Not Promises

    Supplying this compound reflects experience, not just chemistry. Our team handles its lifecycle from pre-production checks on base materials, through reaction and finish, to shipping drums labeled with both batch and operator records. Our audit trails exist for reasons—plants run better when oversight comes from those immersed in day-to-day details. Cooperation with partners, quick troubleshooting, process transparency—these form the backbone of every sale, every technical call, and every ongoing improvement in the line. From the earliest gram-scale batch to repeated multi-tonne campaigns, every kilogram is the product of those lived lessons.

    The Manufacturer’s Voice

    1-(3'-Nitrophenyl)-3-methyl-5-pyrazolone means more to us than a catalog entry or just another drum on a manifest. It stands for the hard-won confidence developed from each scale-up, every successful shipment, and every time we’ve seen a customer’s process improve as a result. Making and delivering it at commercial scale takes more than theory: it demands robustness, attention, and a willingness to learn from every outcome—right or wrong. The lessons taught by this compound shape how we approach all product lines; each success or setback feeds into becoming a better supplier, a tougher manufacturer, and a trusted partner for downstream industry. That, beyond numbers or figures, is where a manufacturer’s perspective makes the greatest difference.