|
HS Code |
208940 |
| Chemicalname | 4-Nitrocatechol |
| Casnumber | 100-97-0 |
| Molecularformula | C6H5NO4 |
| Molecularweight | 155.11 |
| Appearance | Yellow to orange crystalline powder |
| Meltingpoint | 142-146°C |
| Solubilityinwater | Soluble |
| Boilingpoint | Decomposes before boiling |
| Density | 1.63 g/cm3 |
| Synonyms | 1,2-Dihydroxy-4-nitrobenzene |
| Pka | 6.69 |
| Pubchemcid | 68175 |
As an accredited 4-Nitrocatechol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Amber glass bottle containing 100 grams of 4-Nitrocatechol, sealed with a screw cap, labeled with hazard symbols and product information. |
| Shipping | 4-Nitrocatechol is typically shipped in tightly sealed containers to prevent contamination and moisture exposure. It is classified as a hazardous material and should be transported according to local, national, and international regulations. Appropriate hazard labeling and documentation are required, and it should be stored in a cool, dry, and well-ventilated area during transit. |
| Storage | 4-Nitrocatechol should be stored in a tightly closed container in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers or reducing agents. Protect it from heat, sunlight, and moisture. Store at room temperature and avoid conditions that could lead to contamination or decomposition. Proper labeling and segregation from food and drink are essential for safety. |
Applications of 4-Nitrocatechol in Industrial Manufacturing4-Nitrocatechol serves as a functional intermediate in several specialized manufacturing sectors. Our production methods and quality systems ensure consistent performance and compliance with stringent industry demands. The following sections outline proven industrial application scenarios, with details on regulatory standards, recommended dosage ranges, downstream process steps, and end-product formats for each targeted use. 1. Dye and Pigment Intermediates for High-Performance ColorantsDownstream dye and pigment producers integrate this compound as a building block for azo and anthraquinone dye synthesis, especially where electron-donating and -withdrawing interactions are needed to achieve specific color profiles. The material enters the diazotization or coupling reactions as a controlled secondary precursor, allowing precise modification of color fastness, intensity, and compatibility with modern fiber blends such as polyester and polyamide. Application varies across batch and continuous dye manufacturing, affecting final shade reproducibility in textile, plastic, and ink markets. Industry compliance standards
Typical usage ratio
Downstream process integration
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2. Photographic Developer and Analytical Reagent FormulationsSpecialist manufacturers rely on this substance in photographic and imaging chemistry, where it acts as a part of color developer systems and in reagents for analytical detection of trace metals. The compound’s strong electron-withdrawing nature stabilizes radical intermediates, supporting fine control over development times and image contrast. Analytical reagent suppliers incorporate controlled levels into complexometric and colorimetric test kits for water and soil testing. Industry compliance standards
Typical usage ratio
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3. Agrochemical Synthesis for Select Herbicide and Fungicide ActivesChemical synthesis operations within agrochemical companies employ this molecule as an intermediate for manufacturing select nitrophenolic herbicide active ingredients. It facilitates partial reduction and etherification reactions, providing core motifs for active compounds with specific phytotoxic or antifungal profiles. Quality protocols emphasize zero impurity carryover due to regulatory restrictions in crop protection products. Industry compliance standards
Typical usage ratio
Downstream process integration
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4. Pharmaceutical Intermediate for Synthetic Active Ingredient RoutesGMP-compliant pharmaceutical synthesis lines use this compound in multi-step reactions to derive quinone-based drug intermediates, enzyme inhibitors, or chemoprotective agents for preclinical research. Accurate stoichiometry and impurity control are essential, given trace-level specification needs for API manufacturing and subsequent validation by regulatory authorities. Secondary transformation steps may include selective hydrogenation or ether group introduction for enhanced bioactivity. Industry compliance standards
Typical usage ratio
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5. Corrosion Inhibitor Additive Manufacture for Metalworking FluidsManufacturers formulating advanced corrosion inhibitor systems for industrial metalworking rely on 4-nitrocatechol derivatives to trap reactive oxygen species and stabilize protective films on ferrous and non-ferrous alloys. Its electron-donating properties help prolong tool life and minimize surface pitting during high-load machining and forming operations. Formulators must accurately meter this component to ensure inhibitor performance with minimal foaming and residue risk. Industry compliance standards
Typical usage ratio
Downstream process integration
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Having spent years working on chemical synthesis lines, our team sees daily proof that not all chemicals are created with the same intent, purity, or consistency. Among the myriad compounds we produce, 4-Nitrocatechol holds a distinct position, both in its formulation and its broad application range. We don’t just move powders from one drum to another. Instead, every batch reflects a hands-on approach where safety, reliability, and transparency guide production.
4-Nitrocatechol is a nitroaromatic compound, known chemically as 1,2-dihydroxy-4-nitrobenzene. In our own facility, our process keeps a tight grip on particle size and impurity removal. This attention to detail is what keeps long-time customers returning for customized quantities every year. No matter the order scale, the focus always stays on batch-to-batch consistency, because in downstream applications, a small deviation leads to big headaches, whether in research, crop protection, or diagnostics.
Our product comes as a pale yellow to brown crystalline powder. It doesn’t pretend to be impressive at first glance, but behind that humble appearance is a molecule whose demand persists through decades of changing industrial trends. We fine-tune purity to ≥99% (as determined by HPLC or titration analysis), not because it makes flashy marketing copy, but because every decimal point means fewer unknowns in your process output. Some competitors lower the bar with looser specs, believing most applications will tolerate that. On our production floors and in our analytics lab, experience taught us that reliable purity saves our partners wasted time during downstream application—especially in sensitive uses like azo dye synthesis or enzyme substrate preparation.
Moisture control adds another layer of complexity. Water uptake ruins many phenolic compounds during storage, causing clumping, color shifts, or even breakdown that limits shelf life. Careful drying and packaging, performed in-house, maintains stability for several years under recommended storage—away from light and sealed tightly. We monitor this at lot release and randomly throughout inventories. Many labs have avoided costly spoilage simply by switching to our tighter-controlled supply chain.
The largest slice of 4-Nitrocatechol consumption remains in specialty chemical synthesis. In our own experience, requests come primarily from agrochemical intermediates, dye manufacturers, and diagnostic kit producers. For scientists developing new analytical reagents or enzyme substrates, the ortho nitro and dihydroxy configuration is key. These groups provide excellent chelating and electron-donating properties, supporting a wide range of coupling reactions or redox assays.
A significant volume flows to agricultural research. Our partners in this field rely on 4-Nitrocatechol to develop and refine new crop protection molecules. In their hands, tiny changes in starting compound quality can mean the difference between successful experiments and months wasted chasing impurities. Over the years, we collaborated directly with formulation chemists to dial in the physical properties that work best for pilot and production scale runs—such as minimizing dust content, ensuring reproducible solubility, and confirming identity by both UV-Vis and NMR fingerprinting.
Diagnostic reagent houses have their own requirements, demanding especially high lot-to-lot reproducibility. This group scrutinizes trace contaminants such as ortho-quinones and metal ions with particular rigor. Many ask for detailed impurity tracking, to which we respond by routinely providing certificate of analysis data that extends beyond regulatory minima. As the original manufacturer with direct control over synthesis, post-reaction purification, and shipment, we keep feedback loops short—if a lab flags an issue, our chemists investigate it directly and optimize future runs rather than passing the problem between middlemen.
Working in a factory environment, we’ve heard every kind of product comparison question imaginable. Some buyers want to know if paranitrocatechol can serve as a substitute, or if shifting to a lower purity “industrial” grade saves costs in practice. Having watched thousands of kilograms pass our QA benches, we learned there’s no short-changing the chemistry. The 1,2-dihydroxy arrangement of 4-Nitrocatechol provides reactivity patterns that no isomer matches. Trying other nitro-substituted catechols leads to unwanted by-products and unpredictable downstream reactivity. For researchers, these aren’t just theoretical concerns—failed syntheses hit budgets and timelines.
We also see customers ask about differences between our in-house manufactured material and imported or repacked stocks. In many supply chains, traders might relabel low-purity technical grades, adding price tags that don’t match the underlying quality. We test samples of these competitor lots routinely, noting higher levels of residue and inconsistent physical appearance. By managing both reaction and purification ourselves, we set upper and lower impurity cutoffs, using direct analytical measurements, not third-party paperwork. This hands-on approach is often the only way our end-users get what is promised on the label—especially when scaling projects from gram-quantity pilot experiments to ton-scale production.
Any time a client is troubleshooting an application, we invite them to send product samples back, so we can join the root-cause search at the source—something just not possible once intermediaries cut off line-of-sight between manufacturer and user. Over time, these collaborative efforts led us to tighten our iron and copper contamination standards, and adopt antioxidant measures in the supply chain that maintain color and functional reactivity without artificial color stabilizers.
Many chemical manufacturers talk about quality assurance in marketing language. Our difference comes from not outsourcing or delegating critical steps. Every kilogram of 4-Nitrocatechol leaves our warehouse after spectroscopic review, water content measurement, and visual inspection by technicians with years of hands-on experience. Occasionally, we meet demand spikes requiring process upgrades or plant expansions. Instead of cutting corners, these moments push us to invest in new filtration lines, drying ovens, or analytics platforms—avoiding any bottleneck that would risk delivery schedules or product consistency. One recent expansion even included a real-time process chromatograph, letting us refine separation steps in response to day-to-day solvent conditions.
We track evolving application needs through ongoing conversation with end-users: whether agricultural chemical formulators facing regulatory shifts, or R&D labs developing novel detection platforms. In the last decade, as environmental and safety scrutiny increased, partners asked for ever-greater transparency in raw material and waste handling. In response, we adopted not only tighter front-end control in raw material sourcing, but also improved waste minimization and effluent management strategies that are now standard practice across our lines. Safety isn’t just about minimizing accidents—every incident means downtime, material waste, and lost trust. By running workshops and on-the-job training regularly, we keep incident rates low and cultivate a workforce that spots small issues before they grow.
No industrial producer in today’s climate can ignore environmental obligations. Our facility continuously modernizes both for internal health and safety, and to minimize external impact. The synthesis of 4-Nitrocatechol generates acidic and organic residues needing careful neutralization and disposal. We redesigned key process steps to lower total solvent usage, substitute greener alternatives where feasible, and invest in continuous solvent recycling units. This makes a direct difference in our total environmental impact, as well as the batch cost structure for end users conscious about Scope 3 emissions in their supply chains.
Customers now request more information on lifecycle environmental impact with each tender. We believe in providing practical, process-level records showing improvements year over year. Our emissions reporting software ties batch-level production data with broader energy usage—making it possible for clients to document responsible sourcing. By prioritizing local labor, sourcing raw materials from trusted partners, and keeping distribution as direct as possible, we cut unnecessary transport emissions.
A few years ago, we engaged with chemists from an EU regulatory board who were evaluating nitro-organics for future restriction. Rather than waiting on rules to dictate every step, our team adopted secondary containment, air quality monitoring, and enhanced emergency protocols well in advance—often exceeding statutory minima. This readiness paid off when newer rules rolled out with shorter compliance windows. We already had real-world measures in place, so clients experienced zero supply interruptions.
Producing compounds like 4-Nitrocatechol isn’t just an exercise in mixing and drying. The raw materials—particularly catechol and nitric acid—can show unpredictable reactivity, depending on source and purity. Over the years, we’ve faced issues with runaway reactions, off-color material, and unplanned downtime due to process fouling. Addressing these challenges requires more than equipment specs: deep process knowledge, informed adjustments on the plant floor, and a willingness to stop production rather than pass along subpar product.
For instance, we use in-line pH and temperature probes with regular calibration, rather than relying solely on batch sampling. Deviations set off alerts in real time. If solvent or reagent impurities emerge outside our parameter window, we quarantine the lot and dig into root causes—whether upstream packaging failure or micro-leaks in storage. The direct relationship between plant personnel and lab staff keeps feedback cycles fast and corrective action thorough.
An overlooked element in many facilities, our team gives special attention to the final drying and packaging line. Because phenolic nitro compounds degrade with air, moisture, and light, even small weaknesses here cause long-term storage loss and instability. By using dedicated lines for sensitive products and continually testing seals, we limit oxygen ingress and protect finished stock. Direct conversations with customers triggered several packaging innovations that cut costs at the user end—particularly for labs with strict inventory turnover limits or those working in high-humidity climates.
Nothing replaces on-the-ground experience when handling aniline and nitration side products—both from a health perspective and for waste minimization. Each vessel, gasket, and transfer line is checked and tracked throughout cycles, reducing worker exposure and uncontrolled discharges. Staff are encouraged to share process improvement ideas, often surfacing actionable fixes well before they become compliance or financial risks.
In the early years, analytical confirmation of 4-Nitrocatechol purity relied on classical titration and TLC. Today, our lab uses HPLC with diode array detection, GC-MS, and advanced NMR when requested by partners. These upgrades stem from hearing client needs during technical review sessions and translating them into new investments. Routine batches are compared against in-house retained samples and multiple external standards, with all analytical results tied directly to each batch’s certificate of analysis, not generic templates.
Trace metals remain a critical challenge for applications such as enzymatic or specialty dye reactions. Over time, working closely with consumer feedback, we tightened copper and iron maximums, adopting reagent flows and activated carbon treatments that provide cleaner lots without adding prohibitive cost.
Color consistency, often overlooked in bulk supply, comes into focus for labs relying on precise colorimetric assays. We track absorbance profiles, aiming for minimal variation throughout the production year, so researchers and formulation labs get the same response in each batch. Lot discrepancies aren’t excused away—they become an investigation and, ultimately, a source of continual technical improvement.
We view ourselves not just as suppliers, but as partners committed to seeing each batch through its entire lifecycle. This mindset comes from direct field observations. Whether supporting a university chemistry group or a multinational formulator, staying responsive pays off with return business. Our support lines connect directly to on-site plant personnel and product specialists. This isn’t just a slogan—our customers know names and faces behind the material, and problems get solved without bureaucratic layers.
A regular review of market supply confirms that inconsistency in quality still plagues nitrocatechol supply chains. Many new importer labels promise “identical” performance until their product fails in precision applications, leading users to revisit direct sourcing from original manufacturers. Our own archive contains samples from these supply cycles, analyzed for discrepancies in color, impurity, and shelf life. This practice helps us refine both process and packaging, ensuring partners avoid setbacks.
We believe in owning our mistakes and learning from every incident. Whether it’s a missed impurity threshold or undetected packaging defect, we keep these events as lessons—informing new procedures and training for plant staff. This feedback loop has sustained a zero product recall rate over recent years and maintained high trust with even our most technically-wary clientele.
Working as the actual manufacturer, we see firsthand just how important a robust safety culture is. Beyond standard PPE and procedural controls, we maintain a workplace built on knowledge sharing and mutual support. Every staff member receives in-depth process safety training, and safety audits form a regular part of our operations, not a once-a-year event.
Transparency remains essential. Every data point—whether raw material origin, batch test results, or transportation history—is traceable back through digital documentation and written logs. That transparency builds trust not only with regulators, but more importantly with our clients whose livelihoods depend on predictable, reliable supply.
From routine market conversations, we know our partners appreciate the real stories behind each container: how their input guided new product features or improved analytical reporting. Our open-door policy welcomes site visits and technical exchanges—a model that often leads to co-developed improvements in both commercial and R&D applications.
Many thought commodities like 4-Nitrocatechol would fade as newer specialty chemicals arrived, but the opposite is happening. Applications broaden, regulatory expectations climb, and supply chain risks increase, putting more value than ever on direct manufacturer relationships. Our evolution as a chemical producer comes from listening, investing in equipment and people, and refusing to trade long-term trust for short-efficiency gains.
Direct sourcing from an actual producer protects the integrity of sensitive applications and reduces costs created by batch failures or lost product. Over time, open feedback channels turn everyday production problems into sources of innovation—transforming not only how we make chemicals, but how they’re used worldwide.
For every scientist, formulator, or technical buyer weighing their options, understanding what sits behind the label means as much as the numbers on a certificate of analysis. From our plant floor to your lab bench, that personal investment sets true manufacturers apart in an industry that too often loses sight of where value originates.