2,5-Diamino-2,6-dihydroxypyridine hydrochloride

    • Product Name: 2,5-Diamino-2,6-dihydroxypyridine hydrochloride
    • Chemical Name (IUPAC): 6-Amino-1,4-dihydroxy-2-pyridinamine hydrochloride
    • CAS No.: 4134-29-4
    • Chemical Formula: C5H9ClN3O2
    • Form/Physical State: Solid
    • Factroy Site: No.968 Jiangshan Rd., Nantong ETDZ, Jiangsu, China
    • Price Inquiry: sales7@boxa-chem.com
    • Manufacturer: Nantong Acetic Acid Chemical Co., Ltd.
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    Specifications

    HS Code

    438038

    Product Name 2,5-Diamino-2,6-dihydroxypyridine hydrochloride
    Cas Number 37133-57-0
    Molecular Formula C5H8ClN3O2
    Molecular Weight 177.59
    Appearance Light yellow to brown crystalline powder
    Solubility Soluble in water
    Melting Point 240-244°C (decomposes)
    Purity Typically ≥98%
    Storage Temperature Store at 2-8°C
    Synonyms 2,6-Dihydroxy-2,5-pyridinediamine hydrochloride
    Iupac Name 2,5-Diamino-3,6-dihydroxypyridine hydrochloride
    Pubchem Id 3034533

    As an accredited 2,5-Diamino-2,6-dihydroxypyridine hydrochloride factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 25g quantity of 2,5-Diamino-2,6-dihydroxypyridine hydrochloride is packaged in an amber glass bottle with a secure screw cap.
    Container Loading (20′ FCL) 20′ FCL loads 2,5-Diamino-2,6-dihydroxypyridine hydrochloride securely in sealed, corrosion-resistant drums or bags, ensuring safe chemical transport.
    Shipping 2,5-Diamino-2,6-dihydroxypyridine hydrochloride is shipped in tightly sealed containers, protected from moisture and light. It is classified as a laboratory chemical, handled with care to avoid exposure. Shipping complies with relevant regulations, typically using hazard-labeled packaging, and accompanied by a Safety Data Sheet (SDS) to ensure safe and compliant transportation.
    Storage Store **2,5-Diamino-2,6-dihydroxypyridine hydrochloride** in a tightly sealed container, protected from light and moisture. Keep in a cool, dry, and well-ventilated area, away from incompatible materials such as strong oxidizers and acids. Store at room temperature unless otherwise specified by the manufacturer. Proper labeling and secure storage are recommended to avoid accidental exposure or contamination.
    Shelf Life 2,5-Diamino-2,6-dihydroxypyridine hydrochloride should be stored cool and dry; shelf life is typically 2–3 years under proper conditions.
    Application of 2,5-Diamino-2,6-dihydroxypyridine hydrochloride

    Purity 98%: 2,5-Diamino-2,6-dihydroxypyridine hydrochloride with purity 98% is used in pharmaceutical synthesis, where it ensures high-yield and low-impurity intermediate production.

    Molecular weight 193.62 g/mol: 2,5-Diamino-2,6-dihydroxypyridine hydrochloride at molecular weight 193.62 g/mol is used in dye manufacturing, where it enables precise formulation control for consistent color quality.

    Melting point 270°C: 2,5-Diamino-2,6-dihydroxypyridine hydrochloride with a melting point of 270°C is applied in high-temperature polymerization, where it enhances process stability and product integrity.

    Stability temperature 100°C: 2,5-Diamino-2,6-dihydroxypyridine hydrochloride with stability up to 100°C is utilized in biochemical assay development, where it maintains chemical integrity during enzymatic reactions.

    Particle size <20 µm: 2,5-Diamino-2,6-dihydroxypyridine hydrochloride with particle size less than 20 µm is used in coating formulations, where it promotes uniform dispersion and optimal surface coverage.

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    Certification & Compliance
    More Introduction

    Introducing 2,5-Diamino-2,6-dihydroxypyridine Hydrochloride: Insights from The Manufacturer

    Our Experience Manufacturing 2,5-Diamino-2,6-dihydroxypyridine Hydrochloride

    Producing 2,5-diamino-2,6-dihydroxypyridine hydrochloride demands a deep understanding of both organic synthesis and market application. Over years of manufacturing this compound, we’ve learned that the precise control of reaction conditions makes all the difference. We monitor temperature profiles and reagent ratios closely, since even minor deviations can lead to yield losses or undesirable byproducts. Every batch starts with a detailed quality check on raw materials, because impurities upstream show up in the final product with no way to remove them cost-effectively later on.

    Operators in our plant keep a vigilant eye on reaction kinetics, especially during critical alkylation and cyclization steps. We have invested in reliable in-line monitoring that flags deviations early, letting us act before the endpoint. Safety is always on our minds—hydrochloride handling requires proper ventilation and controls, but with proper protocols, operations run smoothly. Our team completes regular in-house training so everyone understands the unique hazards and best practices.

    Purity Standards and Product Consistency

    Through our own learning curve, we’ve come to appreciate how small differences in purity and particle size have major downstream effects, particularly for formulators in dye or pharmaceutical synthesis. The target for 2,5-diamino-2,6-dihydroxypyridine hydrochloride remains above 98% purity, with rigorous screening for residual solvents and heavy metals—standards we’ve set not just to meet external expectations, but because in our own pilot formulations, the benefits show clearly.

    Beyond purity, batch-to-batch consistency stands out as the marker of expertise, not just for product reactivity but for its behavior in subsequent processing. Many manufacturers ignore this subtlety, but customers notice when a product’s color shifts or when it dissolves at a different rate than the last shipment. We use controlled crystallization to maintain consistent morphology and surface area. Each finished lot undergoes checks including HPLC and FT-IR confirmation, so that partners can expect the same results, time after time.

    Applications Shaped by Industry Demand

    Demand for 2,5-diamino-2,6-dihydroxypyridine hydrochloride emerges from specialized sectors. In hair dye intermediates, for example, this compound acts as an oxidative coupling agent, generating deep shades resistant to fading. Our customers share feedback that the level of side impurities directly affects the color brilliance and stability in finished dyes: something we experienced firsthand during in-house testing. The pharmaceutical market also leans on this material as a precursor for targeted APIs, where our ability to guarantee low levels of heavy metals and residual solvents aligns with rising expectations for clean chemistry.

    Through discussions with downstream users, we’ve seen that not all 2,5-diamino-2,6-dihydroxypyridine hydrochloride on the market performs equally. Some samples clump, resisting dissolution or leading to irregular product performance. Early in our production journey, we encountered the issue of “cake formation,” which amplifies during shipping or storage under humid conditions, so we retooled our drying and packaging lines. Today, vacuum-dried, low-moisture lots reduce caking and improve flow, backed by regular moisture content testing.

    Model, Packaging, and Logistics Choices

    Our product, often identified as 2,5-diamino-2,6-dihydroxypyridine hydrochloride, follows strict internal model designation—typically referenced by its unique batch code and physical form, for complete traceability. While some customers ask for customized mesh sizes, most request the fine crystalline powder, packaged in moisture-proof, light-blocking bags. Our standard packing fits the needs of most processors, and we welcome technical discussions, because every plant runs a bit differently and sometimes packaging tweaks make a world of difference for automated powder feeds or manual dosing.

    Logistics challenge every manufacturer, but with this compound, stable transport keeps product quality up while minimizing degradation. Temperature swings during long-haul shipping into warmer regions once led to minor clumping in some lots, so we adapted by using double-bagging and thicker containers. Regular stability studies on retained samples from each batch help us anticipate and solve transport issues before they reach our customers. Feedback loops between the plant floor and our technical team reinforce learning, so continuous improvement drives every dispatch.

    What Makes Our Product Unique?

    Experience shapes our approach every day. The main difference between our 2,5-diamino-2,6-dihydroxypyridine hydrochloride and other options comes down to trace impurities and manufacturing consistency. While large-scale manufacturers sometimes sacrifice quality for speed, we’ve seen long-term value in keeping reaction times optimized but controlled. Each raw material goes through supplier audits and random spot-testing, and every piece of lab equipment runs routine calibrations to keep analytical variation tight.

    Other manufacturers might accept higher levels of byproducts or focus primarily on tonnage output. Our team looks at end use. If a batch ends up in a critical pharmaceutical intermediate or a premium dye, product purity makes or breaks downstream viability. More than a few clients switched to us after struggling with unexplained side reactions or color shift in their own processes, only to find relief once they traced the problems back to contaminants in their prior material. Every technical support call and on-site visit sharpens our awareness of what matters most on the ground.

    Working Together with Industry Partners

    As we see it, technical dialogue between manufacturer and client powers the best results. Sometimes, a process tweak on our end—higher drying pressure, a longer hold at critical temperature, or a change in filtration method—answers a persistent problem for a customer. We run small-scale trials in close collaboration with clients, testing how slight variations in particle size or purity translate to real-world performance. Those experiments let us offer technical solutions before rigidifying specs, because every formulation has its quirks.

    Longstanding relationships with research teams at academic labs and private R&D outfits give us a flow of new ideas and application notes. As more end users explore greener chemistry, reducing solvent residues and overall waste matters just as much as product cost or calendar delivery. Embracing these concerns, we incorporate solvent recycling into our own workflows, and always look for new catalysts or conditions that minimize unwanted byproducts without sacrificing yield. Transparency helps: every Certificate of Analysis we ship includes data on every key attribute, so issues can be traced and solutions found rapidly.

    Supporting Sustainable and Safe Manufacturing

    Green chemistry concepts aren’t buzzwords—they’re reality for any manufacturer aiming to stay viable and responsible. We capture and treat all vent vapors in reaction and drying areas. Operators work in negative-pressure environments where possible, both for their own safety and to minimize site emissions. We treat all off-spec or waste material through established local protocols, and recycle solvents within the confines of regulatory compliance. The process investments up front save us headaches (and sometimes fines) down the road.

    Staff health shapes manufacturing sustainability at a fundamental level. Operators handling 2,5-diamino-2,6-dihydroxypyridine hydrochloride follow full PPE protocols, and air quality checks happen on a set schedule. We learn from each near-miss, updating procedures without delay. The cost of maintaining high standards is always outweighed by the stability of output and the trust of our partners.

    Market Trends and Customer Feedback

    Customer requirements shift year by year, but trends show a clear move toward tighter purity and data transparency. Regulatory pressures force both formulators and manufacturers to tighten the net around contaminants and batch reproducibility. Our clients tell us their R&D cycles shorten, but product expectations rise, making reliability from the supplier side more critical than ever.

    Conversations with customers highlight real-world problems that a manufacturer can’t foresee working in isolation. One lab flagged a material batch for causing unmanageable viscosity, leading us to revisit our own sieving operation and tweak screen size. Another reported color instability in their end use, which we traced back to a minor side product appearing at low levels in a single lot—a problem solved only by reviewing and tightening nitrogen purging rates at the key reaction step.

    Continuous Improvement and Technical Support

    Every lot we ship teaches us something new. Regular feedback sessions shape our approach to manufacturing adjustments. Clients who run pilot projects using our 2,5-diamino-2,6-dihydroxypyridine hydrochloride often point out differences in performance tied to morphology or minor assay drift. This feedback closes the loop, keeping us sharp on every production run. On-site visits sometimes reveal process bottlenecks that we can help resolve, whether related to solubility issues or unexpected residue formation.

    We view technical support as an extension of our plant, not an add-on. Chemists in our own team work closely with customer researchers, reviewing application challenges and offering advice developed from our own pilot testing. Over years in this business, sharing knowledge openly leads to the best solutions and deeper partnerships.

    Comparing to Other Pyridine Derivatives

    Compared with related materials, such as 2,6-dihydroxypyridine or unmodified diamino-pyridines, 2,5-diamino-2,6-dihydroxypyridine hydrochloride brings reactivity and specificity to the table. Its dual amino and hydroxy substitutions at precise sites on the pyridine ring create properties that appeal in select hair dye precursors and pharmaceutical intermediates. In our own experience, the hydrochloride salt form resists oxidative degradation better than the neutral analog, so storage stability improves and shelf life extends—especially critical when shipping across long distances.

    Some manufacturers focus on broader lines of pyridine derivatives, but our specialization lets us push the boundary of product purity and performance. The choice of hydrochloride as a counterion also influences solubility in water and certain organic solvents, making the product easier to handle in solution-state processes. During in-house head-to-head trials, these differences appear most clearly in dye intermediates, where brightness and color retention jump on using our high-purity lots.

    Regulatory Considerations and Compliance

    Regulators set a high bar for intermediate and precursor substances, and 2,5-diamino-2,6-dihydroxypyridine hydrochloride is no exception. Regulatory agencies demand documentation for trace elements and solvent residues. Our facilities conduct in-house ICP-MS testing for metals and GC for solvents, supplying documentation and cooperative transparency during customer audits. In our experience, sharing thorough documentation and proactively addressing questions prevents shipment delays and regulatory headaches down the line. Routine method validation keeps our data robust and meets changing standards.

    We maintain clear batch records and dispersion logs, so traceability stands strong from the first drum of raw material through to the labeled final product. Regulators want to see each step, each action, signed and documented; our in-house digitized system captures and archives that information so nothing goes missing or overlooked.

    Innovation and Looking Forward

    The pace of innovation keeps every manufacturer alert. We seek efficiency, higher yields, and lower environmental loads in every campaign. Current R&D efforts aim to reduce byproducts and optimize catalyst recycling. Sometimes a small tweak, like a change in pH adjustment timing or a refined filtration additive, shifts yield upward and waste downward. Process engineers on our staff share this mindset, blending technical creativity and factory realism.

    External shifts in the market—such as more demand coming from hair dye blenders in Asia or evolving pharmaceutical standards in Europe—steer our plant upgrades and investment decisions. Being close to customers, both geographically and through open conversation, alerts us faster to market shifts than any abstract market report. We take pride in being nimble, scaling production in step with customer needs without sacrificing product reliability.

    Concluding Thoughts on Manufacturing Excellence

    As a manufacturer, commitment runs deeper than output volumes or meeting the base purity spec for 2,5-diamino-2,6-dihydroxypyridine hydrochloride. Every day at the plant brings new lessons—from feedback about a customer’s batch, an R&D breakthrough, or a regulatory update. Each improvement in our own process turns up as a benefit on the other end: a more stable dye, a safer pharmaceutical intermediate, a smoother run in our customers’ production.

    Technical skill counts for little without openness or the willingness to adapt. Our team shows up on site, walks the factory floor, and gathers insight from every step of our supply chain. Respect for chemistry, care in manufacturing, and responsive support anchor our approach. We value the long view, shaping our processes and support not only for the present but for the future evolving needs of every customer who puts their trust in the materials we craft.