Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing admin@sinochem-nanjing.com 3389378665@qq.com
Follow us:

1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt

    • Product Name 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt
    • Alias Armstrong's Acid
    • Einecs 217-494-5
    • 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
    VTB
    Specifications

    HS Code

    195689

    Chemicalname 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt
    Casnumber 130-13-2
    Molecularformula C10H5NNa2O8S2
    Molecularweight 397.25 g/mol
    Appearance Reddish brown to brown powder
    Solubility Soluble in water
    Meltingpoint Decomposes
    Synonyms NNDSA, Naphthol Green B
    Purity Typically ≥98%
    Storageconditions Store at 2-8°C, protected from light
    Application Analytical reagent for iron determination

    As an accredited 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The chemical is packaged in a sealed, amber glass bottle containing 25 grams, labeled with hazard symbols and product identification details.
    Shipping **Shipping Description:** 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt should be shipped in tightly sealed containers, protected from moisture and light. Transport under ambient conditions unless otherwise specified. Ensure proper labeling as a chemical substance and comply with local, national, and international shipping regulations for chemicals. Handle with appropriate safety precautions.
    Storage **1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt** should be stored in a tightly closed container in a cool, dry, well-ventilated area, away from incompatible materials such as strong oxidizers and acids. Protect from moisture and direct sunlight. Store at room temperature, avoiding extreme heat. Ensure containers are labeled clearly and kept away from food and drink. Use secondary containment if possible.
    Application of 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt

    Applications of 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt in Industrial Manufacturing

    1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt serves as a performance-critical intermediate and complexing agent across several specialty chemical industries. The following application areas outline real-world industrial usage, manufacturing integration points, and product compliance requirements.

    1. Metal Complex Dye Manufacturing for Textile Processing

    Major producers of reactive and acid dyes for textiles incorporate this salt as a chelating component to stabilize dye-metal complexes during aqueous synthesis. The ingredient influences metal ion binding, enhancing dye shade development, wash fastness, and migration resistance. Dye makers select grade and ratio according to targeted color depth and compatibility with chromium or cobalt metal ions, essential for technical dye formulations aimed at natural and synthetic fibers.

    Industry compliance standards

    • OEKO-TEX® STANDARD 100 – Product class chemical thresholds
    • ZDHC MRSL v3.1 – Restricted Substances compliance for dye manufacture
    • ISO 105 C06:2021 – Textile testing for colorfastness
    • EU REACH Annex XVII for azo and nitroso group substances

    Typical usage ratio

    • 2%–8% by weight of total chromophore components; optimized by metal content and dye structure
    • Adjustments made for target tints and solubility profiles

    Downstream process integration

    • Injected during aqueous phase condensation with metal salts and coupling agents
    • Participates in pH-controlled vessel reactions for forming stable dye-metal complexes
    • Subjected to filtration, drying, and post-reaction milling before downstream dye blending

    Final product types

    • Acid metal complex dyes for wool and nylon fabrics
    • Reactive metal complex dyes for cellulosic fibers
    • Textile inks for digital printing applications
    • Industrial dye pastes for leather finishing

    2. Analytical Chemistry Reagent Preparation

    The compound functions as a specialized analytical reagent in water and environmental laboratories, especially in colorimetric determination of trace metals such as iron, copper, or cobalt. Manufacturers of analytical kits use the salt for its selectivity and minimal interference, producing standardized reagents that support quantitative testing in compliance with global environmental monitoring protocols.

    Industry compliance standards

    • ISO 8466-1:1990 – Calibration and evaluation of analytical methods
    • US EPA Method 200.7 – Trace elements in water analysis
    • ASTM D1068 – Copper testing in water
    • EPA GLP (Good Laboratory Practice) 40 CFR Part 160

    Typical usage ratio

    • 0.02–0.10 g per 100 mL analytical solution for microanalysis kit preparation
    • Dosed according to reagent blank and required detection sensitivity

    Downstream process integration

    • Weighing and dissolution in buffered aqueous solution as reagent base
    • Pre-packaged in sealed ampoules, test vials, or dropper bottles
    • Retention of color stability and minimal light sensitivity tested after formulation

    Final product types

    • Water quality analysis kits for iron, copper, and cobalt
    • Packed single-use laboratory reagents
    • Standardized photometric test cells
    • Field sampling color developers

    3. Photographic Chemicals and Imaging Formulation

    High-purity grades of this naphthol salt play a role in the manufacture of certain photographic developer solutions, where it acts as a selective auxiliary to control oxidation and image tone in black-and-white as well as specialized x-ray films. Chemical formulators utilize the molecule for its metal ion reactivity during sensitization, enhancing image clarity and silver halide retention in finished films.

    Industry compliance standards

    • ISO 18911:2010 – Imaging materials processing chemicals
    • ANSI/NAPM IT9.17 – Silver image stability
    • EN 14471 – Photographic processing chemical safety
    • Internal QC to Agfa, Fujifilm, Kodak film chemical standards

    Typical usage ratio

    • 0.5%–2% weight in working developer concentrates
    • Adjusted for batch size, image depth, and developer shelf life

    Downstream process integration

    • Dosed into alkaline solution with other developers and stabilizers
    • Pre-mixed as part of batch-compounded developer concentrates
    • Subjected to vacuum filtration and purity verification before filling

    Final product types

    • X-ray film developer solutions
    • Graphic arts photographic chemicals
    • High-resolution black-and-white film developer kits
    • Archival processing solutions for microfilm

    4. Metal Surface Treatment and Plating Bath Additives

    Electroplating and surface finishing operations incorporate the compound as a chelating additive in select metal plating baths, particularly for complexation of trace metal impurities and as a grain refiner in copper or nickel electrolyte solutions. Surface finishing chemical formulators choose it for its capacity to limit unintentional codeposition and to regulate nucleation rates, influencing final coating brightness and uniformity.

    Industry compliance standards

    • ISO 4527 – Electrodeposited coatings standards
    • RoHS Directive (2011/65/EU) for surface treatment chemicals
    • ASTM B604 – Electrodeposited nickel on plastics
    • REACH Regulation (EC) No 1907/2006—authorization for plating chemicals

    Typical usage ratio

    • 0.1–0.5 g/L bath concentration for chelation and grain refinement
    • Dosing calibrated to metal impurity load and plating throughput

    Downstream process integration

    • Added to the electrolyte solution during batch or continuous bath makeup
    • Monitored for chelation stability throughout production runs
    • Subjected to regular titration for precise bath maintenance

    Final product types

    • Electroplated copper and nickel components for automotive
    • Plated connectors and contacts for electrical equipment
    • Decorative coated sanitary and architectural hardware
    • Gloss-controlled plated fasteners and springs
    Free Quote

    Competitive 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt 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.

    We will respond to you as soon as possible.

    Tel: +8615371019725

    Email: admin@sinochem-nanjing.com

    Get Free Quote of Sinochem Nanjing Corporation

    Flexible payment, competitive price, premium service - Inquire now!

    Certification & Compliance
    More Introduction

    1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt: Deeper Utility From Manufacturer Hands-On Work

    What Sets Our 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt Apart

    Working day-in and day-out with sulfonated naphthol derivatives, we see how critical each detail becomes for industry reliability. Our 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt, produced as Model NNSA-36, emerges from direct synthesis on-site with quality tracking at all steps. We base our manufacturing approach on hard-earned experience refining nitrosation and sulfonation procedures, prioritizing consistency batch after batch. Compared to simpler naphthols or generic nitroso sulfonates, we build in extra purification steps to hold side products far below detectable levels, helping end-users avoid unplanned variables in sensitive processes.

    Customers often ask how this product differs from lower-cost 1-nitroso-2-naphthol sodium salts. Most alternatives reach the market with heavier residual organics or wide swings in sulfonic acid placement. Our process secures the 3,6-disulfonic acid form in the sodium salt state with full characterization—proven structure, defined melting behavior, and established color properties. Each kilogram carries assurance rooted in daily in-process measurement, not just post-synthesis tests. Over years, analytical teams iterated small details, such as optimized crystallization timeframes, to build a reliable physical profile: high solubility in water, single-point melting, and strict controls on iron, chloride, and insoluble impurities. This enables downstream users to unlock niche applications where reproducibility means operational certainty, not just theoretical yield on a datasheet.

    Drawing on Experience—Usage That Stands Up in Practice

    With decades spent supplying dye, complexometric, and specialty manufacturing sectors, we watch how ever-lengthening chains of custody distort the original intent behind specialty reagents. Out of the gate, our NNSA-36 helps chemists achieve clear and stable color complexation with transition metals—a foundation for certain high-precision analytical protocols. Metal extraction teams apply it as an analytical reagent, using sharp color changes to detect or separate ions like iron or cobalt under controlled pH. Across diverse mineral processing environments, plant managers reach for our product because batch-to-batch color response saves time on recalibration, cutting uncertainty that creeps in with less controlled sources. In the textile dye industry, where subtle color matches matter for multi-tonne batches, this disulfonic salt avoids “off-tint” risks that stem from side-reactions or contaminant build-up. Finishing units observe how our product leaves fewer residues, reducing post-wash troubleshooting calls and production downtime.

    Beyond classic analytics, we see uptake in fine chemical manufacture, especially where predictable ion-exchange or chelation behavior unlocks value. Some research groups use our NNSA-36 as a ligand for selective precipitation, noting sharper boundaries between soluble and insoluble fractions than with more generalized nitroso naphthols. Academic partners often mention the reproducibility of UV-Vis absorption spectra—integral for quantitative spectroscopy and fundamental studies. Behind the scenes, supporting documentation tracks impurity profiles, so teams running high-sensitivity applications can focus on their science, instead of puzzling over unexpected absorptions or residual colors.

    Specification That Grows From Practice—Not Just Technical Data

    Many product introductions read like dry tables: melting points, purity percentages, water solubility at set temperatures. Our approach draws from hands-on learning in our own labs and in response to user feedback. Over years, we noticed that even trace levels of sodium sulfate or chloride left over from process routes can derail some high-stakes applications—not in theory, but in forgotten edge cases on customer lines. By refining wash sequences and using internal benchmarks based on real user outcomes, we minimize these problem points.

    Each lot undergoes direct observation and functional testing beyond static analysis. In colorimetric metrology work, operators check color stability over time, not just at initial mixing. Hydrolytic stability matters too—our teams stress-test the material under storage conditions that match real facilities, including variable humidity or accidental short-term thermal excursions. We responded to customer complaints about occasional clumping from competing products by adjusting dehydration protocols, ending up with a finer, easy-to-handle powder that flows well during automated dispensing and manual laboratory handling alike.

    Some end-users run intensive downstream syntheses or analytical separations sensitive to not just purity but to physical handling—dust, clumping, or slow dissolution. Observing operators in the field led to small but crucial tweaks to granule size, anti-caking steps, and packaging upgrades. One textile partner in particular tracked a drastic drop in equipment cleanout costs after switching to our configuration, as fewer micro-deposits built up in automated feed hoppers during continuous operation.

    Differences Rooted in Method, Not Just Results

    Direct manufacturer control over each synthesis and finishing stage drives genuine differences in the everyday quality of our 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt. Where many suppliers borrow toll-synthesized ingredients or rely heavily on trading relationships, we keep process and traceability on-site, so every lot aligns with historical data. Beyond baseline purity, this means tighter ranges for key parameters: pH, oxidizable matter, and organic by-products—each tracked because past client projects showed small outliers causing outsized troubleshooting headaches. From hands-on, we learned how catalytic residues not flagged by routine spot-checks can trigger false positives in certain spectrophotometric applications, so we now test every batch directly in the colorimetric analysis conditions our industrial clients face.

    In the real world, differences show up not only in measured purity but in user experience: less downtime, quicker reaction endpoints, fewer sample failures. These may seem like small advantages on paper, but in chemical processing plants running thousands of samples or in textile dyehouses chasing pure, repeatable color across massive lots, such differences add up quickly to measurable cost and reliability gains.

    Our product sets itself apart with deeper transparency. Each block of salt comes with supporting documentation not just listing technical points but offering application history, help with troubleshooting rare use-cases, and manufacturer-verified best practices. If clients run into a process they think should theoretically work but falters with other supply sources, our technical staff brings experience from hundreds of projects directly into problem-solving, offering grounded, practical feedback.

    Balancing Consistency and Innovation

    Every plant manager values consistency, but stagnant production fails as demands change. Our team keeps records of how trace impurities hit process endpoints so we can iterate. For example, we refined our de-aeration step after seeing measurement drift in a series of colorimetric assays at a partner site, even though our certificates showed the material as conforming. By working directly with the operators and receiving real-world feedback on color intensity, we tweaked filter and wash routines to address the obscure culprit: trace oxidizable matter above what standard analysis would flag.

    Laboratory partners continue to push for tighter specification windows. Research partners in metal analysis view the product’s consistent reactivity profile as a key benefit. In textile and dye applications, production runs often stretch over months. Color matching teams have traced long-term batch variation back to uncatalogued minor constituents in generic supply, which build up year after year. By maintaining full on-site synthesis and avoiding off-the-shelf blending, we help end-users avoid troubleshooting cycles that can result from undocumented process adjustments at remote contract facilities.

    We structure our collaboration with users by sharing not just finished product certificates but also data from real application environments. If an anomaly pops up, customers get access to those in our team who contributed to or adjusted the process in question. Feedback reaches the response team without bureaucratic delays, necessary for customers running high-throughput or time-critical applications.

    Practical Support—Focused on End-Use Realities

    As a manufacturer rooted in production, we watch for downstream pain points. Traditional complaints stem from inconsistent dissolution, clumping in automated feeders, or unexplained color drift during critical analysis steps. Fielding queries from industrial partners, we log every technical complaint and address batches directly at the synthesis origin. Most competitors work through multiple layers of traders or contract blenders, so actual root cause resolution lags for customers. By keeping every step local, we shrink troubleshooting time to a single discussion.

    End-user support goes beyond answering technical inquiries. Industry partners sometimes need rapid delivery to rescue unexpected shortfalls. By holding safety stock close to the point of final processing, we avoid shipping delays and mismatches that come from complex, third-party supply chains. Emergencies in production can’t wait on long explanations or generic technical advice: direct support means actual adjustments to production, not reliance on theoretical suggestions or rebranded off-the-shelf alternatives.

    A common dilemma in chemical procurement surrounds minimum order size. Many suppliers focus on massive lot quantities, with little attention paid to the needs of smaller research or pilot plant users. Because we keep synthesis flexible, both bulk consumers and high-precision labs access matched quality and shipment responsiveness. One research partner with a two-week project deadline received fresh-milled material pulled and packed in hours, shaving whole days off process timelines.

    Meeting Safety and Compliance—By Design

    Chemicals such as 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt touch critical safety guidelines set by regulatory bodies worldwide. Our approach integrates compliance from the earliest design and processing phases, not just paperwork at shipment. We train production staff to monitor for subtle deviations well before they manifest as end-user problems—like color drift, hazardous by-product formation, or handling difficulties. Raw material sourcing uses vetted partners only, whose environmental and quality certifications we personally audit through regular on-site checks. Our waste and emissions controls exceed regulatory requirements, drawn from past incidents industry-wide, so we stay well clear of compliance “near misses.”

    Handling guidance, sifting methods, and residue management see regular updates, shaped in part by our data partnerships with research clients and major downstream operators. We adapt process documents based on both changing legal requirements and observed practical risks, like unexpected dust inhalation hazards in compact workspaces or mechanical feeder blockages under varying humidity regimes. User guides ship with every lot, reflecting not boilerplate policy but actual questions and solutions logged by our technical service teams.

    On traceability, each lot ships with full documentation back to raw material sources, enabling audits or reviews without missing gaps. Some partners seek full REACH or comparable regulatory documentation for their processes—by building documentation in parallel with synthesis, we cover demands for local and international compliance, helping users avoid regulatory red tape and supply interruption.

    Building On Quality—Commitment Through Every Kilogram

    True chemical quality does not rest merely on numeric specifications or checklists, but on lived reliability in the harsh, varied, sometimes chaotic environments where partners deploy our product. Each synthesis run gets tracked by the same chemists who helped write the original process standards, with continuous feedback loops from end-users at every stage. Our in-house labs do not just batch test for purity; they simulate downstream use—whether in the heat, humidity, and flow conditions of big plants or under the close scrutiny of analytical laboratories. Across years, feedback cycles with customers have resulted in iterative upgrades—tighter sieving, adjusted drying cycles, and enhanced packaging features—in response to real challenges.

    Our quality guarantee rests on documented history, not one-off test results. By retaining full production records and matching application histories with certification, we offer more than surface-level quality: partners gain a resource, not just a reagent. When equipment operators in a mineral processing plant or quality control chemists in a research center spot an issue, whoever picks up the phone at our end has been closest to the product’s creation and refinement.

    Partners stay with us for the long term because they see that issues—rare as they may be—trigger meaningful action, not deflection or slow service. Commitment to user outcomes means open-books collaboration, ongoing improvement, and concrete results evident at the level where missed batches, color mismatches, or downtime translate into lost value. By focusing every kilogram on predictable utility, handled with deep knowledge from synthesis to end use, our 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt stands as a practical ally on the production floor as much as in the research lab.

    In Practice: Product Support and Ongoing Development

    Shifts in customer process needs always reach us directly; we know that established protocols do not last forever. Recently, global moves toward greener solvents and lower-emission synthesis have prompted several process tweaks on our end, including choice of raw reagents, solvent recycle programs, and batch documentation enhancements. We saw upstream partners driven by both market pull and policy enforcement, each with feedback cycles that quickly reached our own production managers. By adjusting workflows and responding in real time, we support evolving regulatory and responsibly sourced requirements, so users downstream avoid abrupt revalidation or supply headaches. This ensures future applications can scale without running afoul of a shifting compliance landscape.

    Our technical support operates as an extension of hands-on production, not as an outsourced or scripted customer service function. Teams advise on optimal use—whether for faster dissolution, synergistic co-reagent selection, or fine-tuning of colorimetric protocols. Support includes troubleshooting the full workflow: solubilization, pH adjustment, mixing, or even hardware compatibility. We work closely with users to log outlier experiences, feeding them back into batch improvements and user guides, to help forestall repeat issues both for the original user and for future clients.

    Continuous research and engagement with long-standing partners reveal emerging requirements for ever-tighter batch tolerances, reporting standards, and environmental impact reduction. Our on-site development programs blend ongoing process innovation with field learning, so new versions or improvements rest on direct customer pull, not just internal engineering speculation. As a manufacturing group, we witness firsthand how faster, reproducible responses make the difference between an experimental success and a wasted run or downtime in continuous operations.

    Trusted Utility Backed by Experience

    Manufacturing 1-Nitroso-2-Naphthol-3,6-Disulfonic Acid Disodium Salt, we believe that quality lives in the daily grind of process control, application feedback, and reliable delivery. Every kilogram reflects the input of chemists and operators who solve real production challenges, down to the details of flowability, purity, reactivity, and end-use troubleshooting. This work multiplies in its effect by helping clients in diverse fields—analytical chemistry, pigment manufacturing, and advanced material processing—to do their best work, undistracted by unexpected batch variance or hidden issues.

    Reliability in specialty chemicals lets users push forward in their operations, innovate new applications, or minimize downtime. Our job as manufacturer stays grounded in that objective reality. Delivering the expected behavior time after time, answering questions as they come up, and tuning the process based on actual use, these actions give every customer—from research-scale operations to bulk production—confidence that their process will run smoothly, now and through the next change in technology, regulation, or industrial scale.