|
HS Code |
622764 |
| Chemicalname | alpha-Naphthol |
| Iupacname | 1-naphthol |
| Casnumber | 90-15-3 |
| Molecularformula | C10H8O |
| Molarmass | 144.17 g/mol |
| Appearance | Colorless to pale yellow crystalline solid |
| Meltingpoint | 94-96 °C |
| Boilingpoint | 278 °C |
| Density | 1.222 g/cm³ |
| Solubilityinwater | Slightly soluble |
| Odor | Phenolic |
| Flashpoint | 162 °C |
| Pka | 9.34 |
| Refractiveindex | 1.627 |
As an accredited alpha-Naphthol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Alpha-Naphthol is packaged in a 100g amber glass bottle with a tightly sealed screw cap, labeled with safety and chemical information. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for alpha-Naphthol: Typically loaded in 25kg bags or drums, totaling around 12–14 metric tons per container. |
| Shipping | Alpha-Naphthol should be shipped in tightly sealed containers, protected from light and moisture, and labeled according to hazardous material regulations. Transport in compliance with local, national, and international regulations for flammable and harmful substances. Ensure proper ventilation and avoid contact with oxidizing agents during shipping. Store and handle with appropriate caution. |
| Storage | Alpha-Naphthol should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area away from incompatible substances such as oxidizing agents. Protect it from light and moisture. Ensure storage areas are clearly labeled and access is restricted to authorized personnel. Store at room temperature and avoid sources of ignition, as alpha-Naphthol is combustible. |
| Shelf Life | Alpha-Naphthol typically has a shelf life of 3-5 years when stored in a cool, dry, and tightly sealed container. |
Competitive alpha-Naphthol 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
Email: sales7@boxa-chem.com
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Alpha-naphthol, known among chemists as 1-naphthol, stands out as one of those essential aromatic compounds that's shaped both fine chemicals and heavy industry for decades. In our production lines, the transformation of naphthalene sources into the crystalline powder of alpha-naphthol has come to embody not just a chemical reaction, but years of learned discipline, process optimization, and attention to real feedback from users across industries. This isn’t a commodity to us—each batch is shaped by our history with this molecule and a deep commitment to consistency.
Our alpha-naphthol comes as a fine white to slightly grey powder that dissolves easily in ethanol, ether, and a range of organic solvents. Purity runs high, frequently 99% and above, since downstream applications—from antioxidant manufacture to azo dye work—demand low impurity profiles. We’ve refined our distillation and filtration to minimize color bodies and byproducts. Water or ash content can degrade performance in some applications, so we take care to monitor and control these specifics before anything leaves our site. Packed in moisture-tight containers, we always keep an eye on what matters in transit and storage: material integrity.
In dye manufacturing, alpha-naphthol reacts predictably with diazonium salts to yield brilliantly colored azo dyes that resist fading and washing. We tailor our process to produce a granularity and flow that supports automated mixing. Our regular customers in the dye sector care about color consistency, so we continually assess each lot with in-house dyeing tests, not just abstract purity metrics. In pharmaceuticals, it serves as a core building block for drugs like antiseptics and antipyretics. Here, trace impurities can’t be tolerated—so our GMP-inspired tracking and analytical efforts close the loop. Some clients use it for identifying carbohydrates in biochemistry: alpha-naphthol’s reaction with sugars forms a distinct colored complex, and scientists count on clarity in results. Our job, as we see it, is to keep side reactions and background coloration almost non-existent, so every test stands out as it should.
Alpha-naphthol has a structural sibling—beta-naphthol (2-naphthol). They sound similar, but the position of the hydroxyl group on the naphthalene ring makes a world of difference in behavior and end use. For textile dyes, 1-naphthol gives more vivid shades, while 2-naphthol goes towards different chemical syntheses and resins. We’re often asked to clarify this when customers transition from one type to another, especially in expanded product lines or regulatory-driven reformulations. By sticking to one grade and refining it, we eliminate the chances of cross-contamination and confusion—the extra cost of single-purpose production lines pays off in straightforward compliance and troubleshooting.
Another distinction comes from the nitty-gritty of trace impurities. Years ago, common processes sometimes left behind sulfur or nitrogen residues that wreak havoc in high-color-purity applications. We invested heavily in process validation after hearing from textile firms that small changes in our product altered how their dyes aged. Tighter process control led to both higher yields and less variability in application—a win for everyone downstream. Our lot-to-lot consistency results from strict raw material sourcing; when something shifts upstream, we audit quickly to stay ahead of any hiccup.
We didn’t settle on our current manufacturing method overnight. Batch problems and even small customer complaints have driven improvements more than any textbook. For example, one longtime plastics customer flagged a surface bloom issue that we traced to a previously undetected byproduct in one alpha-naphthol fraction. We overhauled the fractionation step and cleaned up the downstream solvents, then followed up with our client for months to confirm the fix really held up. These are not quick tweaks; they reflect a real willingness to keep processes open to revision, backed by real numbers from the field.
Other changes have come from unexpected directions. Research labs sometimes ask for a slightly customized grain size or packaging in smaller lots to control costs and waste. We adapted by offering a range of container sizes and ensuring filling lines could accommodate special orders. This didn’t just help the research market—it spun back into better controls for bulk handling and storage loss across the board, helping everyone handle the product more safely and efficiently.
Every plant making alpha-naphthol faces risk from contamination or unexpected byproducts, and we’re no exception. Years of routine testing—melting point, UV-Vis absorbance, chromatographic purity—intersect with deliberate failure tracking. Whenever an out-of-spec lot emerges, we keep samples and track root causes well beyond statutory minimums. Our in-house labs run regular side-by-side comparisons to known standards. Some customers have brought their own methods to us, asking if we can tweak our QC to match: in most cases, we’ve adjusted toward end use, not just arbitrary internal specifications.
This kind of rigorous self-examination doesn’t always come cheap or smooth. At times, raising purity meant lowering output temporarily, or rearranging production schedules to avoid cross-reactivity with other chemical jobs running parallel. We learned quickly that trusting short-term gains at the expense of long-term reputation never pays off—especially in export markets where authorities run their own spot checks.
Making alpha-naphthol generates waste—spent acids, off-gas, aromatic residues. From the beginning, we grappled with how to manage this burden while prioritizing the health of our community and workers. Before regulations tightened, we upgraded scrubbing and solvent-recovery systems based on our own data from workplace exposure and environmental testing. Our motivation was simple: the same vigilance that protects our staff also shields neighbors and customers from unforeseen risks. We share air and wastewater monitoring results with regulators, and we’ve invited customer auditors onsite to see test results firsthand.
Routine worker training and emergency drills are built into daily routines, not left to annual events. We keep safety data accessible on every floor, and all team members can track batch origins, waste streams, and testing logs. Several years ago, a handling incident driven by a mislabeled drum triggered a full inventory management overhaul—we moved to barcoded, real-time tracking so such errors don’t get repeated.
A few years ago, volatility in naphthalene supply chains threatened our sourcing. We responded by broadening supplier relationships, keeping additional raw material in stock, and investing in more robust purification hardware. Since then, we’ve noticed some traders come and go, chasing price spikes. In contrast, our longer contracts and ingrained process discipline meant we protected our core clients from price shock and sudden shortages. This approach forges deeper trust, especially in industries where production stoppages ripple through supply chains.
Quality alpha-naphthol isn’t just about technical specs—it’s about reliability under pressure. Our approach rests heavily on maintaining everything from feedstock QA records to shipment tracking. The days of taking shortcuts whenever upstream costs spike are over; time and again, the companies who see us through shaky market conditions come from those who know they can depend on us year after year.
Industries working with alpha-naphthol face an ever-changing landscape. Textile markets have grown more sensitive to environmental profiling and eco-labeling requirements. Some downstream buyers now ask about our approach to green chemistry, sustainable sourcing, and life-cycle impact. We pursue continuous reduction in process waste and invest in R&D that promises cleaner reactions without compromising output or cost. This isn’t marketing—local authorities demand regular environmental impact statements, and global clients link purchasing decisions to visible stewardship.
Pharmaceutical inquiries have also shifted. Regulatory bodies in multiple countries have set new thresholds for trace metals and organic solvents. Our analytical teams catch up by improving detection capabilities—extending the range and depth of testing well beyond previous years. We’ve adopted stricter documentation so clients compiling final dossiers for regulatory submission find our audits useful, not an afterthought.
Companies seeking to branch into previously unexplored applications—bioplastics, specialty surfactants, or flavor chemistry—have knocked on our door, asking for modifications to alpha-naphthol’s profile. Some want ultra-low residual solvents, others need granular forms free from airborne dusts. We listen closely, trial small runs, and balance customization with the need to keep core processes stable and reproducible. If a modification threatens to destabilize what works for our established buyers, we’ll propose alternatives or secondary dedicated lines rather than gambling everyone’s results on unproven shortcuts.
At the same time, we’ve learned that new ideas often spin off valuable improvements for the main process. Developing a finer-grained alpha-naphthol for rapid dissolution in a food lab ended up reducing processing times for a key pharmaceutical client. Keeping feedback loops open between R&D, production, and customers has made us far nimbler and more transparent—qualities that independent auditors and end users both appreciate.
Every run through our reactors writes a chapter of experience. Sometimes, problems have no quick solution: a typical example arose with unexpected crystalline deposits in cooled drums. By tracking how container surface energy interacts with the product, then adjusting both drum finish and fill temperature, we cut a source of customer frustration that never appeared in technical manuals. Direct observation and willingness to adapt, more than published methods, keep quality steady over the long haul.
Maintaining product purity means sweating every detail. We have seen how variations in feedstock quality dramatically ripple through final purity, and refusal to chase cheapest-available prices for intermediates rewards us in fewer troubleshooting headaches. Building lasting relationships with both raw material suppliers and end users means trading some negotiation leverage for reliability—and in specialty chemistry, this has paid us back with reputation and premium volumes, not just commodity play.
Our commitment runs deeper than supplying a chemical. We routinely share new test findings, alert clients to process tweaks, and solicit feedback on performance in real-world applications. Some of our most valuable improvements have traced directly back to a customer call-out—often problems looked minor at the start but turned out to reveal fundamental process improvements for everyone.
We welcome onsite visits and encourage transparent dialogue with quality managers and researchers. If something isn’t working quite right, we’d rather learn early and fix at root than hide behind documentation. This approach wins friends as much as contracts, and it’s formed the backbone of our approach since the earliest days of our business.
Alpha-naphthol continues to anchor important advances in specialty chemistry, dyes, and pharmaceuticals. The demands from regulators, end users, and downstream partners only grow sharper. We remain convinced that maintaining high purity, predictable performance, and flexible service delivery forms the best path forward. That doesn’t mean standing still: as customer requirements shift and technology advances, we push to keep processes ready for what comes next, while holding to the reliability that long-time buyers have come to expect.
Our experience tells us that excellence isn’t an endpoint—it’s a rolling balance of improvement, honest feedback, and the practical wisdom earned by making every batch to satisfy both testing standards and real-world application realities.