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HS Code |
439825 |
| Product Name | 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt |
| Common Name | Sodium pyrithione |
| Cas Number | 3811-73-2 |
| Molecular Formula | C5H4NNaOS |
| Molecular Weight | 149.15 g/mol |
| Appearance | White to pale yellow crystalline powder |
| Solubility In Water | Soluble |
| Melting Point | 300 °C (decomposes) |
| Ph Of Solution | 8.5-10.5 (1% aqueous solution) |
| Boiling Point | Decomposes before boiling |
| Uses | Antimicrobial, antifungal, biocide |
| Odor | Slight characteristic odor |
As an accredited 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 250g of 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt is supplied in a sealed amber glass bottle with a secure screw cap. |
| Container Loading (20′ FCL) | 20′ FCL can load approximately **16 metric tons** of 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt, typically packed in 25kg bags. |
| Shipping | **2(1H)-Pyridinethione, 1-hydroxy-, sodium salt** should be shipped in tightly sealed, clearly labeled containers. Protect from moisture and light. Use secondary containment and appropriate cushioning. Follow relevant regulations for shipping chemicals, noting any hazards (e.g., irritant). Include Safety Data Sheet (SDS) with transport, and ensure carriers are informed of handling and emergency procedures. |
| Storage | 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt (Sodium pyrithione) should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area, away from direct sunlight and incompatible substances such as strong oxidizers and acids. Protect from moisture and heat. Avoid dust formation and ensure containers are properly labeled to prevent accidental exposure or contamination. |
| Shelf Life | Shelf life of 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt is typically 2 years when stored in a cool, dry place. |
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Purity 99%: 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt with purity 99% is used in cosmetic formulations, where it ensures effective antimicrobial protection. Molecular weight 143.15 g/mol: 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt with molecular weight 143.15 g/mol is used in anti-dandruff shampoos, where it delivers reliable fungicidal activity. Stability temperature up to 200°C: 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt with stability temperature up to 200°C is used in industrial water treatment, where it maintains biocidal effectiveness under high process temperatures. Particle size <10 µm: 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt with particle size less than 10 µm is used in coatings, where it enables uniform dispersion and enhanced surface protection. Aqueous solubility 10 g/L: 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt with aqueous solubility 10 g/L is used in textile preservation, where it allows rapid dissolution and even application. Melting point 300°C (decomposition): 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt with a melting point of 300°C (decomposition) is used in polymer manufacturing, where it provides thermal stability during processing. pH stability range 4-9: 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt with pH stability range 4-9 is used in agricultural fungicides, where it delivers consistent efficacy across varied soil conditions. UV absorption max 342 nm: 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt with UV absorption maximum at 342 nm is used in sunscreen formulations, where it enhances UV protection and product stability. |
Competitive 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615371019725 or mail to sales7@boxa-chem.com.
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Tel: +8615371019725
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Every year, as we advance our manufacturing capabilities and field support, 2(1H)-Pyridinethione, 1-hydroxy-, sodium salt (often called sodium pyrithione) continues to earn its critical place in a variety of industries. From personal care products to industrial formulations, this compound helps deliver real-world solutions where reliable antimicrobial and anti-fungal performance are essential. Unlike generalized commodity chemicals, our sodium pyrithione benefits from decades of manufacturing experience. Keeping the process in-house means that we can manage traceability, composition consistency, and impurity profiles, which can determine whether a batch meets project needs or falls short. Years of practical problem-solving and feedback from real-world applications have refined our approach, both on the shop floor and in technical support.
To make sodium pyrithione on a consistent commercial scale, we draw on a combination of process engineering, careful sourcing, and real-time quality control. The basic building blocks—pyridine, sulfur sources, and sodium—seem straightforward, but the difference lies in handling reaction temperatures, minimizing by-products, and protecting against potential contamination. Many users do not realize how sensitive sodium pyrithione can be to trace metals and mixed oxidants. Through hands-on control, batch after batch, we have learned how each variation can nudge the color, solubility, odor, or performance data. Iron contamination, for example, may not sound significant, yet even a few parts per million can cause visible yellowing or instability. This hands-on understanding helps us deliver what end users actually want: predictable, repeatable performance.
The product typically appears as a white to off-white powder, excellent for dissolving in water. Sometimes end applications require a ready-made solution, which we also prepare in-house to precise concentrations. The process of turning raw chemicals into high-purity sodium pyrithione demonstrates how detailed production methods affect downstream use, storage life, and final function. Over dozens of process runs and scale-ups, we've narrowed down the most effective drying temperatures, inert gas blanketing, and even the packet materials needed to keep moisture away post-packaging.
Unlike generic materials, sodium pyrithione’s unique antifungal and antibacterial profile gives technical formulators a problem-solving tool that other molecules fail to match. In the production of shampoos, anti-dandruff products, and other personal care goods, our chemical stands out for its quick action against Malassezia species. No unrelated preservative or antimicrobial technology matches its proven action spectrum in this environment. Workers on the line, customers in regulatory teams, and chemists building pilot batches have all given us direct feedback about how stable, reliable sodium pyrithione can allow products to go to market with confidence. In testing, products with this ingredient usually outlast parallel formulas facing the same fungal and bacterial loads.
Demand in paints and coatings has grown steadily, particularly as water-based technologies replace traditional solvent systems. Dried paint films face fungal and algal invasion as soon as they reach the wall or a wooden substrate. Providing a formulation-grade sodium pyrithione that won’t clump, segregate, or react with common thickeners calls for careful thought in production. Poorly controlled sodium pyrithione negatively impacts color acceptance, user safety, and storage time, so our finished product always aligns with the tight performance criteria required by leading manufacturers. When clients approach us with cases of peeling, discoloration, or surface mildew, our technical team walks through their actual paint or coating process and helps optimize usage rates or improve dispersion. Many paints, adhesives, and sealants now contain our sodium pyrithione in part because we sweat the small details during production.
There’s a common misconception that minor differences in chemical grade or particle size do not impact field results. Experience tells us otherwise. Small shifts in moisture level or trace alkaline content can make the difference between a stable ingredient and a gelling mess. For our sodium pyrithione, we guarantee a consistent assay—most often in the range of 40% active content for powder form, and higher values for our specialized concentrated liquid models. Deciding which format suits a customer comes from our direct work on production lines across Asia, Europe, and North America. Brands making shampoo base need free-flowing powders that pour and blend smoothly, without caking or loss of activity. Paint and adhesive operations, by contrast, require a sodium pyrithione that disperses quickly and doesn’t clump during high-speed mixing.
These aren’t theoretical distinctions—they come directly from our experience troubleshooting for large factories and smaller labs alike. Some years back, one client’s entire bulk tank system began foaming and gumming due to slight overages in solution concentration and incompatible dispersants. We worked side-by-side with their team, swapped in our granular sodium pyrithione produced under tighter drying conditions, and helped return their line to standard. While our competitors may claim broad interchangeability, the daily work of managing particle shape, moisture range, and even shelf-life testing proves otherwise.
Many applications start with simple questions: What makes sodium pyrithione different from the array of biocides and antifungals on the market? We answer by sharing the practical impacts that our customers notice right away. Compared to zinc pyrithione, which often shares the spotlight, sodium pyrithione brings much higher water solubility and works across more neutral pH ranges. This opens up usage in some water-based formulations where zinc-based options tend to precipitate, lead to color variation, or clog filters over time.
Some buyers ask why not use benzoates or more traditional parabens for preservation. Bench trials tell the story—sodium pyrithione routinely delivers stronger cytostatic and fungistatic action at lower treat rates. That means cleaner formulations with lower loadings, less impact on viscosity, and improved product shelf life. For those dealing with mold or bacterial recurrence in paints and personal care batches, the rigorous field feedback suggests you don’t just need an antimicrobial in abstract—you need the right one, produced to the precise specification.
Clients sometimes experiment with silver-ion antimicrobials, isothiazolinones, or old-school phenolics. Silver-based additives often face regulation and cost issues, not to mention inconsistent dispersion in organic systems. Isothiazolinones can deliver broad-spectrum performance, but face significant scrutiny due to sensitization risks, supply chain hiccups, and less predictable stability in alkaline blends. Our sodium pyrithione, by contrast, meets current regional regulations for many end uses, and we regularly ship it with custom documentation packets designed around our actual production conditions. Regulatory compliance, for us, doesn’t mean just a paper claim but reflects raw material origin, batch history, and full lab analytics—and our technical and QA teams field audit these results year after year.
One major paint company in our client network encountered recurring failures when using alternate biocides. Mildew formed within two months of exposure, and the color tone of the paint shifted noticeably during outdoor trials. The company spent months searching for a cause—raw material changes, packaging reforms, changes in water quality—but the culprit turned out to be the switch from sodium pyrithione to a less stable preservative. After returning to our product, tracked lot-to-lot and supported by hands-on technical visits, the recurrence rate of fungal surface blooms dropped below 1%. This kind of impact only comes from a product with a tight, reproducible production process and face-to-face partnership with end users.
Pharmaceutical and personal care brands demand similar proof. We’ve produced sodium pyrithione that supports phase stability, anti-dandruff effectiveness, and compatibility with surfactant and thickener systems. Every time a client calls with a clogging or precipitation concern, our lab pulls control samples from the same production line—a practice that lets us compare historical performance with current results. Over the years, this continuous improvement loop has improved our drying systems, established a stricter spec on metallic impurities, and cut down dusting problems during large-scale blending. For any manufacturer competing in regulated, high-expectation industries, these incremental upgrades are not minor—they maintain brand reputation and market access.
We standardize on a white powder with an assay above 40% sodium pyrithione content, low odor, and a moisture content kept under 6%. The physical form varies from fine powder for lab scale or small blends to coarse, granulated material for large automated feeders. This flexibility emerged from working directly with production engineers who explained their bottlenecks and blending headaches. Some operations—especially those handling personal care bases—see a tremendous improvement in uptime and blend quality by moving from dusty powders to a slightly granular model.
Our sodium pyrithione solutions reach up to 20% active content with minimal stabilization needs. These liquids find a place in dosing systems and automated blending lines where powder handling causes too many stoppages or airborne dust issues. Deciding to offer both formats came from solving actual customer challenges in high-volume plants. We also set every batch through a strict sieve analysis and flowability check, since end users depend on batch-to-batch flow rates in automated lines. Each shipment receives a detailed certificate outlining not just the basic chemical properties, but particle distribution, moisture, pH, and full heavy metals cataloged by batch.
Sodium pyrithione faces varied acceptance worldwide, and end application plays a critical role in how regulatory bodies treat it. Staying prepared for these changes takes more than just monitoring legal shifts—it demands a working relationship with each segment of the supply chain. As regulations tighten, customers count on verifiable data, rapid responses, and open channels with our compliance team. Over the years, we’ve adapted documentation, batch tracking, and impurity limits to align with the exact rules enforced locally and internationally.
One example occurred as European biocide directives shifted on allowable treat rates in consumer products. Many product launches faltered as new documentation requirements took effect. Our company, with in-house production and transparent traceability, stepped forward to assist customer regulatory teams in updating their submissions. By comparing site-specific testing data and sharing those results with regulatory consultants, our customers managed to keep supply chains open through review periods. We approach these collaborations seriously, since a single compliance lapse can jeopardize not only short-term contracts, but reputational standing across regions.
Quality demands more than equipment or ISO documents—it lives in the people who monitor, adjust, and communicate results across production and technical support. In producing sodium pyrithione, our QA teams interact every shift with operators, test bench staff, packaging technicians, and logistics coordinators. No shipment leaves without a matching certificate based on full-run sampling, not just a pilot or start-of-batch check.
Failures and mistakes do not disappear with scale—they become clearer, and root causes easier to track when every step is documented and open to review. One year, a major customer detected a faint color shift after using our product. After on-site testing and cross-referencing plaque samples with our archived lots, it turned out the color drift traced to an upstream raw material supplier who modified their sulfur carrier. Adjusting our incoming inspection and tightening our vendor standards removed the source, and a revised spec has remained robust ever since. This type of event underlines the importance of full supply chain knowledge—a capability much harder for distributors or middlemen to replicate.
As manufacturing and regulatory landscapes shift, real progress depends on close, ongoing communication between producer and customer. The volatility of global raw material pricing, evolving biocide regulations, and trends toward natural/low-toxicity preservatives keep us alert and proactive. Several trends continue to drive our development efforts. Water-based systems, for example, have expanded demand for highly soluble, low-residue sodium pyrithione, prompting us to invest in new drying and micronizing equipment. Direct customer feedback has led us to reformulate for lower dust, faster solution rates, and better storage stability, keeping products responsive to field needs.
No process remains static. Our chemists regularly test alternative solvents and process catalysts, while operational teams trial improved filtration and drying technologies. Working with technical staff at personal care, coatings, and material science companies, we experiment with modified granule shapes, anti-caking agents, and alternate solution stabilizers. This level of dialogue—driven by feedback from real end users—keeps our manufacturing standards relevant and practical, even as product standards globally tighten.
Quality sodium pyrithione cannot emerge from chance, rebranding, or fortune. Every step, from purchasing raw components to fine-tuning reaction and finishing protocols, shapes product performance and reputation. Our commitment remains grounded in the work our employees and customers carry out every day. We continue to listen, learn, and adapt—not just to keep up, but to set the benchmark for future improvements. With every shipment, we deliver on a promise built not just in a lab analysis, but in years of real work, hands-on problem solving, and shared achievement.
