Disodium 1-nitroso-2-naphthol-3,6-disulfonate

    • Product Name: Disodium 1-nitroso-2-naphthol-3,6-disulfonate
    • Chemical Name (IUPAC): disodium 1-nitroso-2-naphthol-3,6-disulfonate
    • CAS No.: 1518-74-7
    • Chemical Formula: C10H4N2Na2O9S2
    • Form/Physical State: Solid
    • Factroy Site: No.968 Jiangshan Rd., Nantong ETDZ, Jiangsu, China
    • Price Inquiry: sales7@bouling-chem.com
    • Manufacturer: Nantong Acetic Acid Chemical Co., Ltd.
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    Specifications

    HS Code

    172367

    Chemicalname Disodium 1-nitroso-2-naphthol-3,6-disulfonate
    Casnumber 135-47-7
    Molecularformula C10H5NNa2O8S2
    Molecularweight 397.26 g/mol
    Appearance Reddish-brown powder
    Solubilityinwater Soluble
    Meltingpoint Decomposes
    Synonyms Nitroso-R Salt
    Phvalue 4.5–5.5 (1% solution)
    Storagetemperature Room temperature
    Odor Odorless
    Stability Stable under recommended conditions

    As an accredited Disodium 1-nitroso-2-naphthol-3,6-disulfonate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Disodium 1-nitroso-2-naphthol-3,6-disulfonate is packaged in a 100g amber glass bottle with tamper-evident seal.
    Container Loading (20′ FCL) 20′ FCL loads about 14 MTs of Disodium 1-nitroso-2-naphthol-3,6-disulfonate, packed in 25kg bags on pallets.
    Shipping Disodium 1-nitroso-2-naphthol-3,6-disulfonate is shipped in tightly sealed, chemical-resistant containers to prevent moisture and contamination. It is transported according to relevant chemical safety regulations, with appropriate labeling and documentation. Protect from direct sunlight and extreme temperatures. Handle with care and use appropriate personal protective equipment during unloading and storage.
    Storage Disodium 1-nitroso-2-naphthol-3,6-disulfonate should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from direct sunlight and sources of heat or ignition. Avoid contact with strong oxidizers and moisture. Clearly label the container and keep it in a dedicated chemical storage cabinet to prevent contamination and accidental mixing.
    Shelf Life Disodium 1-nitroso-2-naphthol-3,6-disulfonate typically has a shelf life of 2–3 years when stored in a cool, dry place.
    Application of Disodium 1-nitroso-2-naphthol-3,6-disulfonate

    Purity 98%: Disodium 1-nitroso-2-naphthol-3,6-disulfonate with purity 98% is used in metal ion detection assays, where it ensures high selectivity and sensitivity for trace analysis.

    Molecular weight 403.24 g/mol: Disodium 1-nitroso-2-naphthol-3,6-disulfonate at molecular weight 403.24 g/mol is used in analytical chemistry for complexometric titrations, where it provides accurate quantification of metal ions.

    Water solubility 50 g/L: Disodium 1-nitroso-2-naphthol-3,6-disulfonate with water solubility 50 g/L is used in aqueous dye formulations, where it guarantees uniform dispersion and stable coloration.

    Particle size D90 <10 μm: Disodium 1-nitroso-2-naphthol-3,6-disulfonate with particle size D90 <10 μm is used in pigment applications, where it delivers enhanced color strength and consistent particle distribution.

    Melting point >300°C: Disodium 1-nitroso-2-naphthol-3,6-disulfonate with melting point >300°C is used in high-temperature process environments, where it maintains structural integrity and functional stability.

    UV absorbance λmax 430 nm: Disodium 1-nitroso-2-naphthol-3,6-disulfonate with UV absorbance λmax 430 nm is used as a chromogenic reagent in photometric measurements, where it enables reliable detection of metal-ligand complexes.

    Stability pH 2–8: Disodium 1-nitroso-2-naphthol-3,6-disulfonate with stability in pH 2–8 is used in industrial water analysis, where it ensures consistent performance across varied water conditions.

    Sodium content 11.2%: Disodium 1-nitroso-2-naphthol-3,6-disulfonate with sodium content 11.2% is used in textile dyeing auxiliaries, where it promotes excellent wash fastness and dye compatibility.

    Ash content <0.5%: Disodium 1-nitroso-2-naphthol-3,6-disulfonate with ash content <0.5% is used in electronic chemical processes, where it reduces contamination risk and enhances finished product quality.

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    Certification & Compliance
    More Introduction

    Disodium 1-nitroso-2-naphthol-3,6-disulfonate: Experience Behind Our Production

    Introducing Our Disodium 1-nitroso-2-naphthol-3,6-disulfonate

    Disodium 1-nitroso-2-naphthol-3,6-disulfonate has built a solid reputation as a reliable organic reagent for both laboratory and industrial processes. Directly from our manufacturing line, this chemical brings the consistency and reliability necessary for analytical chemistry, especially for trace metal detection and separation. Through years of hands-on refining, the product we manufacture has reached a standard that customers expect for critical applications. We supply this compound as a fine, free-flowing powder, without impurities that would compromise analytical results. Our process control avoids the batch-to-batch variability that disrupts production schedules and laboratory routines.

    Our Real-World Production Experience

    Modern chemistry relies on reagents that perform their roles every time, without surprises. We learned early on, especially with colorimetric and complexometric applications, unpredictable impurities remove confidence in results. Our in-process controls keep sodium sulfate, nitrite, and moisture well below troublesome levels. During drying, temperature and residence time get calibrated to manage water content, as excess moisture clumps powder, leading to inconsistent measurements in research settings. We follow every batch from naphthol sulfonation through nitrosation, tracking conversion rates and side reactions via real-time analytics.

    Most chemists talk about theory, but experience comes from each step — from filtration to drying to homogenization. Small changes can throw off solubility or introduce haze in solution. Practical chemistry is not about abstract ideas; it's about which hands actually weigh, dissolve, or test a reagent, and who measures trace metal backgrounds. As manufacturers, we regularly pick random samples for full-profile testing — not just for documentation, but because we use these reagents in our own labs as reference materials.

    Specifications Shaped by Usage, Not Catalogs

    Academic or commercial catalogs rarely address the issues faced in real analysis: background interference, filtration residues, unwanted byproducts. Through continuous feedback from in-house and industrial partners, we adjusted our specifications for Disodium 1-nitroso-2-naphthol-3,6-disulfonate to match true working needs. Our current standard delivers a minimum assay of 99%, with heavy metal content controlled and checked on every lot. We keep free acid below detection limits, measured by precise titrimetry.

    Solubility remains critical for spectrophotometry and gravimetry. We do not settle for approximate numbers. Instead, we dissolve each new batch under UV-visible light, scanning for unexpected base absorption or color shifts which signal unintended side reactions. The optical clarity in solution defines our product’s reliability far more than marketing claims about “purity” without supporting data.

    Usage in Metal Ion Detection and Analytical Chemistry

    Making a reagent for sensitive metal detection involves more than just shipping a product in a drum. Disodium 1-nitroso-2-naphthol-3,6-disulfonate serves as a chelating agent for nickel, cobalt, and iron determination in water, soils, and ores. Complexation yields intense colors, even with trace concentrations, making quantification straightforward for trained analysts. We support research teams by maintaining the stability and predictability they require — critical in municipal water screening, mining quality assurance, and academic teaching labs.

    Environmental chemists depend on this compound for spot tests, colorimetric titrations, and photometric monitoring. In our experience, commercial labs value consistency over exaggerated performance claims. If trace lead or copper contaminates a batch, false positives or poor detection limits follow. Our plant isolates synthetic steps and handles raw materials with strict segregation to prevent such cross-contamination. We stock our finished goods only after passing both internal and external proficiency testing. Frequent repeat customers rarely ask for improvements — their trust builds batch by batch over years of use.

    Differences from Similar Chromogenic and Analytical Agents

    As a manufacturer, we regularly benchmark Disodium 1-nitroso-2-naphthol-3,6-disulfonate against chromogenic agents like dimethylglyoxime or 8-hydroxyquinoline. Each finds its niche: for some metals, alternatives offer different color intensity or solubility. What sets our product apart is the strong, fast reaction with nickel and cobalt at ambient temperatures. Unlike some agents, our compound does not require organic solvents that complicate workplace safety programs. Water solubility allows for simpler reagent preparation and cleaner cleanup.

    Some customers try competing products promising “extra pure” formulations, but laboratory comparisons show performance hinges on the identity and level of impurities — something only tight synthesis control can ensure. In our own comparative tests, alternative suppliers sometimes ignore low-level contaminants that cause turbidity or dull color transition at the endpoint. We never rely on bulk purity measurements alone; instead, we scrutinize every lot using spectrometric and chromatographic methods tailored for this specific product. That’s the foundation for genuine trust in industrial and laboratory applications.

    User Challenges and Our Ongoing Response

    Years ago, complaints sometimes landed in our inbox — a haze floating in solution, or unexpected background in blank runs. We traced these to upstream impurities, especially unreacted starting material or trace metal contamination. After process changes and additional wash steps, such problems disappeared. We publish technical bulletins whenever improvements arise, sharing tips on solvent selection, filtration, and sample preparation. Technical support teams field questions from users who wonder about compatibility with water hardness or salt interference; our guidance goes beyond standard datasheets, referencing empirical results and decades of accumulated know-how.

    Quality control does not stop at our plant gate. We advise customers on safe handling, shelf storage, and protection from light or humidity, since certain degradation products can form over time if left exposed. Problems with clumping or slow dissolution usually point to storage practices rather than faults in the product itself. To address those, we improved not only our packing materials but also delivered usage recommendations drawn from the real world, avoiding accidents and wasted reagent.

    Processes and Environmental Considerations

    A responsible manufacturer balances product quality with sustainable practice. Manufacturing Disodium 1-nitroso-2-naphthol-3,6-disulfonate requires care: spent reaction mixtures carry nitrite and organic residues. We have invested in on-site treatment tanks for neutralization and carbon polishing, ensuring that wastewater never exceeds local discharge thresholds for chemical oxygen demand or heavy metal content. Internal audits keep us compliant not just with regulations but with the values that long-term customers expect from their suppliers. As countries tighten controls, our plant upgrades filtration, ventilation, and solvent recovery—costly but necessary for continued operation in today’s regulatory climate.

    Energy efficiency also matters. Steam-driven reactors and dryers once dominated production sites, but electricity use has overtaken as the main overhead. To reduce our footprint, we installed heat exchangers and improved insulation on reaction vessels. Adopting closed-loop water cooling means we do not add unnecessary load to municipal supplies. These efforts benefit not only the environment but help control costs over the life of the plant, savings we pass along to customers who count on stable pricing.

    Supporting Research and Customization

    We do not stop at supplying an off-the-shelf reagent. Scientists and engineers sometimes request variants: special particle size for automated dispensers, or adjusted solubility profiles for new kinds of analytical instruments. Collaborating with such users refines our techniques and broadens the product’s scope. Our pilot plant lines accommodate small-lot production for these needs — valuable for university projects or new industrial protocols still under review. On occasion, unique applications inspire us to revisit our own archives, searching for historical process records for early lots, then updating them in light of new scientific findings.

    We always document real-performance metrics, based on customer feedback as well as third-party proficiency schemes. Instead of resting on past successes, we regularly sit down with research chemists to discuss evolving challenges in trace metal analysis or environmental compliance. This keeps our production in tune with the front lines of chemical research and regulatory change.

    Packaging and Shipping: Reliable From Our Door to Yours

    Shipping sensitive chemicals brings its own challenges. With familiarity in handling Disodium 1-nitroso-2-naphthol-3,6-disulfonate’s particular properties, we pack using lined, air-tight containers that buffer against moisture and light. Every drum or pail leaving our facility carries clear marking for batch traceability. Prior to dispatch, our team inspects sealing and label integrity — mistakes at this stage risk delayed projects and lost confidence.

    Transportation partners receive clear guidelines regarding temperature and handling limits. For overseas dispatch, our compliance staff stays current on international regulations. Regular training for warehouse staff ensures proper segregation and minimizes risk of cross-contamination. Reports reach our desk promptly if any incidents occur during transit, and we treat claims as a direct reflection of our reputation in the field. Customers can depend on predictable supply and the reassurance that every shipment reflects the same high standards we set at the production stage.

    Feedback Loops and Continuous Learning

    Success comes from dialogue. Feedback loops connect us with customers in laboratory, academic, and industrial settings. Listening to user experience, especially in complex analytical or regulatory environments, uncovers new requirements or exposes unexpected issues. Some users standardize parameters for quality assurance protocols, requiring not only batch certificates but also on-site validation. Certifications alone hold little value unless they align with real performance.

    We sponsor user group meetings and technical workshops, exchanging insights not just about our product, but about the best techniques for metal testing. From hands-on demonstrations to shared troubleshooting guides, we invest in strengthening our entire community’s technical skills. Our experts participate in updating published protocols, reflecting state-of-the-art findings, enabling peer-reviewed data to inform manufacturing changes.

    Comparative Value: Industry Lessons and Longevity

    Value stands the test of time, not just on paper or in early product launches, but across decades of partnership. While costs and specifications often make headlines, sustained reliability attracts repeat business and long-term loyalty. We see this in the continued preference for our Disodium 1-nitroso-2-naphthol-3,6-disulfonate, with many original customers returning year after year, citing minimal downtime, predictable results, and a straightforward purchasing process.

    Sometimes new suppliers appear on the market, offering similar sounding compounds or “improved” variants. But chemical manufacturing is not about novelty for its own sake. We have witnessed users switching back to our products after encountering instability or result drift from competitors. These experiences reaffirm the strength of our process knowledge, depth of technical documentation, and willingness to continually invest in our core manufacturing capabilities.

    Ethics and Accountability in Manufacturing

    Trust between a manufacturer and end-user depends on honesty and accountability. Our operation stands open to third-party audit at any stage. Field reports or technical complaints receive direct management review, not passed off to distant departments. Where users report genuine product deviations, we collect samples, trace root causes, and, when justified, revise process maps or supplier qualifications accordingly. We treat every batch as an extension of our reputation — a standard set by our founders and reinforced by every generation of chemists and engineers on our team.

    We also invest in transparent sourcing of raw materials. Our suppliers submit to regular qualification audits, ensuring no hazardous or restricted reagents slip into our supply chain. By holding partners and our own staff to the same high standards, we reinforce the reliability our customers expect across continents and fields. In balancing growth with careful stewardship, we safeguard both the immediate needs of frontline researchers and the broader future of sustainable science.

    Moving Forward: Our Commitment to Quality and Growth

    Looking back on years of producing Disodium 1-nitroso-2-naphthol-3,6-disulfonate, we have consistently worked to upgrade standards, incorporate regulatory changes, and adapt to fresh analytical demands. No manufacturing plant can remain static in this era — international standards evolve, customer requirements shift, and scientific knowledge continually expands. Adapting to these changes means returning to basic principles: strong control over processes, clear documentation, and a willingness to engage in open discourse with customers and partners alike.

    Our staff spends time both in the plant and in customer laboratories, a practice that keeps us grounded and attuned to the subtle requirements that shape real-world chemical use. It is one thing to produce chemicals that fit specifications on paper; it is another to supply materials that deliver predictable results through years of applied research and practical application. The difference lies in experience, pride in craft, and a genuine partnership between manufacturer and user.

    Conclusion: True Value Through Experience and Trust

    Disodium 1-nitroso-2-naphthol-3,6-disulfonate represents more than a chemical compound on a product list. Years of direct manufacturing experience inform every aspect of quality, strength, and performance. Each lot that leaves our facility has been tested not just by instrument, but by people who know how the product will be used and who stand ready to address any challenge presented by our customers. With every drum shipped and every test passed, we reinforce a promise: reliability delivered, and innovation driven by mutual trust and expertise.