Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing admin@sinochem-nanjing.com 3389378665@qq.com
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2-Pyridinethione

    • Product Name 2-Pyridinethione
    • Alias Pyridine-2-thiol
    • Einecs 226-774-7
    • 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

    106273

    Cas Number 1121-31-9
    Molecular Formula C5H5NOS
    Molecular Weight 127.17 g/mol
    Appearance White to off-white crystalline powder
    Melting Point 126-128 °C
    Solubility In Water Slightly soluble
    Density 1.31 g/cm3
    Synonyms 2-Mercaptopyridine 1-oxide, Pyridin-2(1H)-thione 1-oxide
    Pubchem Cid 13599

    As an accredited 2-Pyridinethione factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 2-Pyridinethione, 25g, is packaged in an amber glass bottle with a secure screw cap and labeled with safety information.
    Shipping 2-Pyridinethione is shipped in tightly sealed containers to prevent moisture and air exposure, complying with chemical transportation regulations. It should be clearly labeled, and kept upright during transit. The material is transported as a hazardous chemical, requiring appropriate documentation, handling precautions, and safety data sheets for safe and compliant shipping.
    Storage 2-Pyridinethione should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from direct sunlight, moisture, heat sources, and incompatible substances such as oxidizing agents. Ensure the storage area is secure and clearly labeled. Avoid exposure to extreme temperatures. Use chemical-resistant shelving and keep away from food and drink. Suitable storage prevents decomposition and maintains chemical stability.
    Application of 2-Pyridinethione

    Applications of 2-Pyridinethione in Industrial Manufacturing

    As the direct manufacturer, we supply 2-Pyridinethione for targeted downstream industries that require strict compliance, specific technical integration, and well-documented performance. Our material finds utility in defined industrial domains, where formulation precision and established regulatory frameworks determine every aspect of application. Below, we outline its key industrial applications along with detailed technical, regulatory, and process data based on real-world manufacturing practices.

    1. Anti-Dandruff Agents in Personal Care Formulations

    2-Pyridinethione, particularly in its zinc complex form, enters the personal care sector as an active anti-dandruff ingredient due to its recognized antifungal properties. In shampoo and scalp treatment production, formulators introduce it at specific phases post-emulsification and before perfuming to ensure clinical activity is preserved. Regulatory compliance for this substance is tightly controlled, with ingredient limits and safety evaluation protocols governed by both international and regional cosmetic authorities.

    Industry compliance standards

    • EU Cosmetics Regulation (EC) No 1223/2009 Annex III
    • US FDA Title 21 CFR 358.710
    • China Safety & Technical Standards for Cosmetics (2023 Edition)
    • ASEAN Cosmetic Directive

    Typical usage ratio

    • 0.1%–2.0% (calculated as active zinc salt), adjusted according to target region and product classification (leave-on/rinse-off)

    Downstream process integration

    • Blended into the aqueous phase during secondary mixing after the main surfactants form a stable base, prior to addition of fragrance and preservatives

    Final product types

    • Medicated anti-dandruff shampoos
    • Scalp treatment lotions
    • Dermatological hair tonics
    • Medicated conditioners targeting fungal scalp disorders

    2. Industrial Water Treatment Biocides

    In industrial water systems, such as cooling towers and recirculating water loops, 2-Pyridinethione acts as a microbicide for controlling microbial growth that leads to biofouling and system efficiency loss. Plant operators dose it directly into water systems as part of regular maintenance schedules, adhering to industrial safety, discharge, and environmental handling regulations that set upper bounds for active ingredient use and effluent characteristics.

    Industry compliance standards

    • US EPA FIFRA Registered Active Ingredient (Product Registration required)
    • REACH Regulation (EC) No 1907/2006
    • EN 13623 (European standard for water biocides efficacy)
    • China’s National Standard for Biocidal Products GB/T 18883

    Typical usage ratio

    • 5–50 mg/L, tailored to system volume, contamination level, and frequency of application; dosage depends on initial contamination and ongoing microbial load assessment

    Downstream process integration

    • Dosed continuously or via shock treatment into water circulation systems, with dosing pumps calibrated for supplementing as part of the plant’s water management protocol

    Final product types

    • Chemical water treatment formulations for industrial plants
    • Packaged cooling water biocide solutions
    • Pre-mixed biocidal agents for HVAC and closed water loops
    • Service water anti-fouling solutions for heat exchange and chiller equipment

    3. Antimicrobial Additives in Coatings and Paints

    Coating manufacturers incorporate 2-Pyridinethione as a biocidal additive to prevent microbial degradation of film-forming polymers, especially where paints face humid or mold-prone environments. Formulators blend it during pigment dispersion or final letdown to ensure distribution throughout the paint matrix, and production adheres to building product and biocidal materials regulations with strict residue and migration limits.

    Industry compliance standards

    • EU Biocidal Products Regulation (BPR, (EU) No 528/2012)
    • US EPA Antimicrobial Pesticide Regulations
    • GB 18582-2020 (China compulsory standard for coatings)
    • JIS K 5660 (Japan standards for fungicide in paints)

    Typical usage ratio

    • 0.1%–0.3% by weight based on total wet paint, adjusted according to exposure risk, intended environment (interior vs. exterior), and local biocide regulations

    Downstream process integration

    • Added during pigment or filler dispersion, or in the letdown phase after main resin incorporation, under controlled agitation to avoid premature precipitation

    Final product types

    • Mildew-resistant wall paints
    • Antimicrobial building coatings
    • Protective coatings for HVAC, industrial piping, and condensate systems
    • Specialized architectural paints for hospitals, schools, and food processing spaces

    4. Preservatives in Metalworking Fluids

    Metalworking fluid producers use 2-Pyridinethione to control bacterial and fungal contamination in concentrates and diluted emulsions, prolonging system life and preventing odor. The substance is added during the blending of concentrates, complying with occupational health requirements and specific voluntary standards for coolant and cutting fluid safety in production and end-user applications.

    Industry compliance standards

    • ASTM D2579 (Standard Test Methods for Metalworking Fluids)
    • ISO 7745 (Safety and Health in the Use of Metalworking Fluids)
    • OSHA 29 CFR 1910.1200 (Hazard Communication Standard)
    • VDI Guideline 3397 Sheet 1 and 2 (German guidelines for metalworking fluid operation and management)

    Typical usage ratio

    • 50–200 ppm in the finished emulsion, varied depending on system circulation volume, make-up water quality, and frequency of fluid change-outs

    Downstream process integration

    • Incorporated during the production of fluid concentrates, then monitored and maintained at target levels through periodic in-process dosing on users’ shop floors

    Final product types

    • Synthetic and semi-synthetic metalworking fluid concentrates
    • Cutting oil emulsions for precision machining
    • Grinding coolants for ferrous and non-ferrous alloys
    • Chemical maintenance solutions for metalworking systems

    5. Antimicrobial Agents in Rubber and Polymer Processing

    Rubber and elastomer compounders integrate 2-Pyridinethione during mixing to suppress mold growth that can develop during storage and end-use, especially for formulations exposed to periodic wetting or warm, humid environments. The substance’s use follows standards for indirect food contact and indoor environmental safety, with close technical control over additive interactions during vulcanization and polymer curing.

    Industry compliance standards

    • EN 71-3 (Safety of Toys—Migration of certain elements, relevant for consumer goods)
    • US FDA 21 CFR 177.2600 (Rubber articles intended for repeated use—food contact)
    • REACH chemical safety compliance (Annex XVII and SVHC requirements)
    • ISO 9001 for downstream rubber goods QC protocols

    Typical usage ratio

    • 0.05%–0.2% by total polymer weight, adjusted for fungus exposure risk, polymer compatibility, and end-use certification requirements

    Downstream process integration

    • Added in the rubber mixing phase, before the addition of curatives and before final extrusion or molding to ensure dispersion and thermochemical stability

    Final product types

    • Sanitary rubber gaskets and seals for HVAC and piping
    • Polymer-based mats and floor coverings for wet environments
    • Rubber liners for tanks and chemical process equipment
    • Elastomer components in household appliances susceptible to fungal attack
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    Certification & Compliance
    More Introduction

    2-Pyridinethione: Reliable Chemistry for Demanding Applications

    Our Experience with 2-Pyridinethione in Industrial Production

    In our daily operations, we handle a range of pyridine derivatives, and 2-Pyridinethione stands out as a staple for clients who need strong chelating properties and consistent reactivity profiles. Decades of fine chemical production have given us a unique perspective on the challenges that can pop up in synthesis work or in integrating specialty chemicals into complex formulations. 2-Pyridinethione, known for its distinctive molecular structure—a pyridine ring with a thione group at the second position—serves as a cornerstone in both lab and large-scale chemical manufacturing.

    One thing we notice in client requests is a preference for high-purity material, especially as the end uses continue to diversify. Our ability to consistently deliver 2-Pyridinethione at purities of 98% or higher comes from closely monitored process controls that focus on yield and side product filtering, not just volume. On the plant floor, our focus is not only on hitting technical numbers. We pay close attention to stability, batch reproducibility, and minimizing the formation of related substances—dead-ends that can disrupt a formulation down the line.

    Chemical production requires a balance between optimized throughput and batch uniformity. With 2-Pyridinethione, trace moisture, air, and storage conditions play a role in how long the product retains its efficacy and solubility profile. Every shipment faces stringent post-production checks using HPLC, GC-MS, and titration methods, because small variations in structure or purity can radically affect the downstream application, whether it’s in industrial water treatment or as a building block for pharmaceuticals.

    Understanding Specifications and Physical Properties

    Our chemists work late nights to solve the puzzles that routine assays and physical checks can’t reveal. Keeping 2-Pyridinethione in its optimal crystalline or powdered form involves attention to temperature and packaging—desiccant choices, packaging seals, and controlled environments. Moisture sensitivity often separates consistent supplies from unreliable ones; we see this in feedback from partners who have tried sources with less rigorous handling protocols.

    The material’s physical state—light yellow or off-white powder—signals more than simple identification. It says something about purity, as minute amounts of byproducts or oxidized species can quickly discolor the batch. Consistent particle size, usually sub-150 microns by sieving, supports easier dissolution in a range of solvents, and we’ve fielded custom requests for tailored mesh cuts from clients working on special catalysts or fine surface coatings. Our investment in controlled milling systems pays dividends in these scenarios, eliminating the risk of contamination from metal tools and maintaining batch-to-batch reproducibility.

    Typical Uses: Industry Realities

    We see 2-Pyridinethione requested by clients who want a high-performance chelating agent capable of binding transition metal ions, particularly in water treatment installations or as a masking agent in analytical chemistry setups. Some wastewater facilities rely on it to remove interfering metal ions from process streams, exploiting its selectivity and fast reaction kinetics. Other clients incorporate it into anti-dandruff formulations or antimicrobial treatments, due to the structural similarity and intermediate roles it plays compared to well-known zinc pyrithione.

    In organic synthesis, 2-Pyridinethione delivers versatility as a building block for more complex molecules. Its reactivity at the thione position opens the door for custom derivatization, and we have supported EPC contractors and laboratory clients looking to scale up custom ligands or catalysts. Our long-term clients often give feedback on how raw material consistency relates to yield for their downstream processes. When a batch delivers less than 98% purity, the cascade effect can mean costly byproduct separation or failed synthesis on their end—which always feeds back into our own process improvements.

    What Sets 2-Pyridinethione Apart—Direct Experience Counts

    We’ve handled a range of organosulfur and nitrogen compounds, and the performance of 2-Pyridinethione comes from its balance between nucleophilicity and selectivity. Appetite for stronger chelators or alternatives sometimes brings questions about whether other products can replace it in sensitive applications. Our perspective, after running dozens of pilot and production-scale syntheses, is that very few structural analogs achieve the specific reactivity or stability profile needed for stringent water or pharmaceutical formulation standards.

    Some clients ask about substituting 2-Mercaptopyridine or 2-Mercaptopyridine N-oxide, each with their own quirks. In practice, 2-Pyridinethione offers a unique blend of sulfur reactivity and pyridine resonance stabilization, making it less prone to rapid oxidation or unwanted side reactions under typical storage or reaction conditions. Differences in ligand strength and solubility translate directly into efficacy, and brief excursions in raw material quality have sometimes set back customer timelines by weeks. We view quality not as certifications, but as performance metrics returned from actual field use—trial, error, and repeated pilot runs.

    Comparing it to more common industrial chemicals, the margin for error is smaller. An impurity profile that’s tolerable in broader-use materials turns up as a yield drag or even a hazard in more demanding 2-Pyridinethione syntheses. For years, we have adjusted our purification protocols—whether through optimized crystallization, finer filtration, or tighter atmospheric controls—to address bottlenecks identified by laboratory partners or in line with updated toxicological research.

    Addressing Industry Concerns: Handling, Storage, and Safety

    Manufacturers bear responsibility beyond handing over a drum or bag. Safe handling of 2-Pyridinethione rests on making sure the chain of custody stays tight from factory to user. We invest in packaging and logistics to minimize exposure to air and moisture; leaks or expired seals can spoil an entire lot. Not a week goes by without shipment checks, stress testing, and feedback sessions with logistics partners to keep shelf life and usability in sync with actual customer needs.

    Storage needs are direct: keep dry, avoid prolonged exposure to heat, and limit air ingress. Over years of QC reporting, we’ve seen how deviations—such as warm storage areas or repackaging under humid conditions—impact both stability and usability. Even subtle changes in molecular structure from oxidation or hydrolysis alter key performance properties, causing headaches for anyone needing precise chelation or reactivity. Our warehouses operate under strict protocols—air conditioning, silica gel inserts, and tamper-evident seals—to make sure customers experience product quality that matches the factory batch.

    From Batch Synthesis to Support—Our Commitment on the Shop Floor

    Unlike many brokers or traders, we sweat the daily details of reaction kinetics, raw material sourcing, and traceability. Modern chemical production carries tough demands: regulatory scrutiny, raw material volatility, and the operational pressure to shave time off batch cycles without cutting corners. With 2-Pyridinethione, we face these challenges using in-house R&D, continuous operator training, and detailed traceability from raw material receipt to final dispatch.

    Many of our process improvements arise from field reports rather than just internal audits. Feedback cycles—what our technicians hear from users running into trouble with dissolution rates or purity swings—drive investments in new driers, filtration units, and even staff upskilling. In one recent year, a change in an upstream supplier’s pyridine purity caused a wave of phone calls about off-spec performance downstream; our QA team went deep, identified the trace impurity, and modified purification steps to root it out. We see knowledge transfer as a two-way street: client insights feed back into changes on our side, and the benefit runs both ways.

    Sustainability and Responsible Chemistry

    The chemical industry shoulders growing responsibility for environmental impact and responsible sourcing. Our approach to 2-Pyridinethione starts with a commitment to minimize waste—routes that cut down mother liquor byproduct, solvent recycling, and energy efficient drying cycles. These choices aren’t just about reducing cost—they play a palpable role in emissions and occupational safety.

    We push our partners and upstream suppliers for transparency in their operations. Solvent recovery rates, spent catalyst management, and energy audits are regular topics in supplier reviews. Down the line, as clients shift to stricter compliance under frameworks like REACH, our focus on detailed batch records, impurity tracking, and MSDS transparency saves both sides time and trouble. Facts matter—without traceable data, safety claims are just empty words.

    Quality That Shows Up in Real Use

    Each drum and bag cleared by our QA team goes through a set of reality checks rooted in actual industrial uses. Simple analytical checks only go so far; we run pilot reactions with every production lot to catch issues before commercial dispatch. In one example, an unusually humid production run showed a subtle shift in melting point and reactivity curve. That batch got sidelined, and the learning cycle fed back into tighter humidity controls on the warehouse floor.

    Our R&D projects, whether trialing a new solvent system or refining downstream neutralization, never run in isolation from customer needs. Over the years, we’ve supported clients facing regulatory transition—where a single trace solvent or byproduct can shift an entire compliance status. We keep our operation agile not only to capitalize on process improvements, but also to give customers confidence that a technical solution to tomorrow’s requirements is already under way.

    How We Diagnose and Solve Common Production Problems

    Unexpected issues don’t wait for office hours. Batch-to-batch variability, which can sneak in from subtle shifts in raw ingredient quality, shows up quickly in customer feedback. For example, one partner flagged an off-odor issue traced to trace thiol impurities riding in from an adjusted upstream run. We responded by adjusting our washing protocol and adding a final gas purge step, which killed the unwanted contaminant at the root.

    Real troubleshooting comes from being hands-on, using in-process checks rather than waiting for complaints. Problems that could have ended up costing a customer a campaign got contained and corrected on our shop floor, not left to slow-motion failure in their facility. Lessons carry through to every batch; our operators know firsthand how missed steps or missed checks stack up across not just one lot, but entire production campaigns.

    Why Direct, Manufacturer-Led Processes Matter

    Plant-level manufacturing has always demanded commitment and resilience. For 2-Pyridinethione, consistency is the currency. Clients rely on us to resolve process issues before they grow into headaches, and direct production control means we can adapt and respond in real time. Global disruptions or volatile logistics highlight the difference between a manufacturer who controls the process and a middleman skating by on surface-level testing.

    Long-term relationships with R&D centers, universities, and process chemists give us a ground-level understanding of shifting regulatory landscapes and practical use cases. Traceability, pure material, and direct answers—not canned responses—are our currency. As the market for specialty pyridine derivatives grows, the difference between a hands-on producer and a distant third-party will only become more significant.

    Meeting the Latest Requirements: Regulatory, Analytical, and Commercial

    Requirements don’t stay in one spot for long. Tighter impurity limits, increased transparency, and responsible sourcing expectations all hit at once. Each production run must adjust. Our laboratory keeps pace by updating analytical panels, incorporating new spectroscopic standards, and training operators to recognize issues before they leave the plant. Spot checks, regulatory alerts, and technical bulletins are part of our routine, not just boxes to check.

    Feedback from regulatory submissions and customer audits drives updates to how we talk about, test, and ship our product. Some months see more activity around compliance with new water effluent standards; other years, attention shifts to export and transport documentation. In every case, the real-world feedback loop from use to production floor never slows.

    Looking Forward: Product, People, and Progress

    Reliable 2-Pyridinethione will only grow in importance as manufacturing moves to more complex, regulated, and environmentally sensitive applications. The history is always written by those on the ground, working out kinks one batch at a time. We don’t position ourselves as a faceless supplier; our identity is rooted in how 2-Pyridinethione works for the users who trust what’s inside the bag. Fads and trends come and go, but raw material quality and manufacturing knowledge drive innovation and safety.

    We see the product not just as a series of assay values on a certificate, but as a material built by, and for, practical applications. The best testing system is the one informed by customer outcome, and every analysis, process adjustment, and handling protocol builds toward a cycle of mutual progress. Chemical manufacturing is, at its heart, about meeting challenges head-on—with skill, attention, and a commitment to doing things right, batch after batch.