|
HS Code |
121362 |
| Chemicalname | 1,8-Naphtholactam |
| Casnumber | 81-88-9 |
| Molecularformula | C11H7NO |
| Molecularweight | 169.18 g/mol |
| Appearance | Light brown to grey powder |
| Meltingpoint | 249-252 °C |
| Solubility | Insoluble in water |
| Density | 1.328 g/cm3 |
| Smiles | C1=CC2=C(C=C1)C(=O)NC=C2 |
| Iupacname | 2H-naphtho[1,8-bc]pyran-2-one |
| Synonyms | 1,8-Naphthalimide; N,N-unsubstituted naphthalimide |
| Pubchemcid | 7073 |
| Storageconditions | Store at room temperature, keep container tightly closed |
As an accredited 1,8-Naphtholactam factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | A 25-gram amber glass bottle with a tight-sealed cap, labeled "1,8-Naphtholactam, CAS: 81-87-8, for laboratory use only." |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for **1,8-Naphtholactam**: 9 metric tons (MT) packed in 25 kg fiber drums, safely secured on pallets. |
| Shipping | 1,8-Naphtholactam is shipped in tightly sealed containers, protected from light and moisture. The containers must be clearly labeled according to regulatory requirements. Standard chemical shipping procedures include handling as a potentially hazardous material, with appropriate documentation. Transport should comply with local and international guidelines for laboratory chemicals to ensure safety and integrity. |
| Storage | 1,8-Naphtholactam should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from direct sunlight and incompatible substances such as strong oxidizing agents. Ensure proper labeling and avoid exposure to moisture. Follow all relevant safety guidelines, including storing in a designated chemical storage cabinet when not in use. Keep out of reach of unauthorized personnel. |
| Shelf Life | 1,8-Naphtholactam typically has a shelf life of 2-3 years when stored in a cool, dry place, protected from light. |
Competitive 1,8-Naphtholactam 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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Producing 1,8-Naphtholactam day in and day out brings its own set of challenges and rewards. This chemical carries the formula C12H7NO, and its deep, crystalline character is familiar to anyone in dye chemistry or the world of high-performance pigments. In our experience, customers rely on consistent purity measured batch after batch. We have seen that even marginal shifts—in crystal morphology or trace impurity content—can throw off whole formulations. Our facilities do not just process raw materials; we’re tracking purity specifications using in-house HPLC and microscopy so nothing gets missed between intermediates and shipped goods.
Most of our batches stand between 98% and 99.5% purity levels. Handling specifications remains more than box-checking—it is a process shaped by repeated feedback from technical customers. For those blending 1,8-Naphtholactam as a pigment precursor, the absence of traces like 1-naphthol, naphthalene, or sulfuric residues can be the difference between smooth production and troubleshooting an entire plant run. We calibrate our reactions and washes around these requirements, learned the hard way from small-lot users in the dye, pharmaceutical, and electronic material sectors alike.
Some of our oldest partners recall eras when crude naphtholactams came packed in barrels with unpredictable flow, needle-like lumps, or even brown tints—telling signs of incomplete separation or mishandled oxidation. Today, uniformity and traceability guide our process controls. Our 1,8-Naphtholactam stands out by the way it re-dissolves and crystallizes, with minimal dusting or agglomeration. This is not just a matter of pride; it is driven by the customers who need product that won’t clog feed lines, react poorly in condensation steps, or wreck expensive filtration units.
Compared to lower-grade or blended naphtholactams in commerce, our product routinely avoids the off-color and foul odor issues that arise from overcooked aromatic byproducts or mismanaged reactor loading. Downstream, in pigment synthesis (especially for high-brightness arylide or benzimidazolone ranges), these side notes pop up on finished color cards and quality tests. Manufacturing at scale, we found even ppm-level impurities impact not just shade purity but also stability under light or heat exposure—so extra attention to wash cycles and temperature ramps remains built into every campaign.
In university or specialty labs, 1,8-Naphtholactam finds new uses every year. Beyond pigments, chemists explore it as a substrate for photocatalysts, organic semiconductors, and more recently in anti-corrosion coatings. These experiments depend not just on “chemical grade” claims, but on detailed knowledge from the maker’s side—where each possible contaminant comes from, what solubility profile to expect, or whether a polymorphic shift might occur under heat or solvent switch. Conversations with research groups helped us develop analytical data packages that now ship with every order above 500g.
The versatility of 1,8-Naphtholactam hinges on the amide-lactam bridge of its fused rings. Its unique reactivity lets it work as a nucleophile in key coupling or substitution reactions, introducing further complexity into pigment, medicine, or advanced materials design. As a producer, we deal directly with R&D chemists needing predictable reactivity, not just dry blendability. This means investing in process analytics and supporting method customization, so academic and industrial partners can repeat their key results without worrying about batch-to-batch drift.
Scaling up from gram-scale synthesis to lots of several hundred kilos changed how we view this molecule. The clean conversion from 1,8-diaminonaphthalene through oxidation, ring closure, and final crystallization took trial and error: glycol-based oxidants reacted differently at scale; atmospheric oxygen needed closer monitoring to control side product formation. Our workers learned to read changes in slurry color and viscosity, right down to the “feel” in the mixer tanks. Only hands-on familiarity gets 1,8-Naphtholactam down to low residuals, especially when custom blends or particle sizes are needed.
Every serious manufacturer hits hiccups: filters that clog overnight with unexpected fines, temperature controls drifting outside spec, isolating color byproducts that sneak by early-stage analytics. Few aspects test our team’s experience as much as recycling mother liquors without building up side materials. Years of process refinement taught us to run smaller pilot batches for custom grades, rather than risking whole plant changeovers. Investments in recycling lines and filter media, combined with close work between production and QC, give us confidence when moving from R&D to tonnage orders.
Industrial partners—especially in pigment manufacturing—come back to our 1,8-Naphtholactam because of its impact on efficiency. The clean, consistent morphological properties translate into short filtration times and fewer equipment stoppages. One paint manufacturer reported that switching from a blend containing 2% related naphthalenes to our grade cut their washing and milling times by a third. These stories pivot on reliability, not just price or color output.
It’s not uncommon for new users to note that a cleaner naphtholactam lets them blend more concentrated formulations or push toward purer end colors, reductions that influence not only production costs but also market differentiation. For companies formulating high-performance inks, a batch contaminated with oxidized residues can bring an entire customer complaint chain. We have learned over years of partnership that consistent supply matters as much as analytical data, so our logistics focus stays as sharp as our chemical controls.
With regulatory oversight growing, traceability in chemical production means more than paperwork. Our investment in lot tracking, regular heavy metals screening, and secure documentation audits did not spring up overnight. These steps came after requests from multinational partners who needed to prove compliance both domestically and abroad. Meeting standards like REACH or US EPA listings involves documentation at every point along sourcing, handling, shipping, and after-sales support.
Environmental impact concerns bring their own lessons. Waste minimization and solvent recycling are not only slogans—they cut both costs and liability. Our process has moved toward minimizing chlorinated solvents and handling recovered byproducts so no one faces contamination downstream. Local authorities in our region require multi-stage scrubbing and effluent tracking; we share these methods openly with users requesting green sourcing support. Such transparency sets manufacturers apart, offering confidence further down the value chain.
It’s easy to mistake 1,8-Naphtholactam for structurally related analogs or even unrelated lactams if only the name is referenced. Our sales and technical support regularly field questions about interchangeability. There’s a big distinction between this naphtholactam and more common ones like 2,3-naphtholactam or phthalimide. 1,8-Naphtholactam has unique resonance, reactivity, and a role as a synthesis intermediate which others do not match. Its ortho-fused ring system and modifiable lactam nitrogen favor pigment and specialty chemistry where substitution or polymerization is required.
Off-the-shelf lactams from bulk suppliers—often sourced from non-integrated plants or secondary producers—may bring competitive price points but often lack close process controls or technical documentation. Small-batch chemists working on novel dye structures have told us of entire syntheses derailed by mismatched starting materials from unknown sources. We address these risks not only through process qualification but through plant audits, openness about raw material origins, and offering controlled reference samples for method development.
Our technical team observes that R&D customers, especially those developing organic semiconductors or exploring selective functionalization, seek even tighter impurity windows and more granular documentation. The shift toward patent-filing and regulatory submissions globally places new requirements on traceability and certificate depth—an area where our hands-on manufacturing background provides a direct advantage. We do not outsource batch records or QA/QC, preferring to keep direct control, allowing easier customization or method adaptation.
Material scientists often require alternative grind or particle distributions for niche applications. For them, crystalline consistency and bulk density play into scattering behaviors or dispersion efficiency. Our facility set up a secondary mill for short runs and custom packs responding to feedback from electronics and composite developers. This is an investment in both equipment and training that came only after repeated customer conversations and post-sale testing.
Supplying 1,8-Naphtholactam is not just a matter of standard manufacturing routines. Heat management during oxidation steps, elimination of byproduct tars, and achieving flawless post-crystallization washing all test our crew’s training and day-to-day vigilance. Our facility logs deviations and customer feedback so that we can adapt and improve with each campaign. When a sudden shift in raw material lot caused off-white staining, detailed investigation—backed by our archived batch and raw material records—tracked the cause and prevented a recurrence.
In the pigment and fine chemical sector, competition can be fierce—new entrants offer low prices while experienced producers maintain service, technical data, and support that goes far beyond a “commodity” mindset. We view supply relationships as partnerships built on delivering not just product, but also reliability, knowledge transfer, and risk management. Few buyers regret paying a bit more for that peace of mind after a missed deadline or production stoppage from low-quality supplies.
As applications expand beyond pigments—into battery research, catalysis, or even pharmaceuticals—the need for close manufacturer-user collaboration grows. Our history shows that each new field brings unique specification demands. Early-stage users in functional materials research often require micro-batch runs, tailored dispersibility, or special packaging. We have expanded our batch release documentation, origin traceability, and sample archiving based directly on these conversations.
Our investment continues in lab analytics, process flexibility, and logistics technology. The most valuable results come from deep technical exchanges—sometimes over small lots destined for universities, sometimes in years-long contracts with global manufacturers. We see the future of 1,8-Naphtholactam shaped collaboratively, one conversation and project at a time. It is not just about product, but about knowledge sharing and trust developed over repeated, successful shipments.
Bulk chemical supply moved far from the old commodity approach. With digital auditing, responsible sourcing, and customer-driven specification, the bar rises every year. Internal audits, external third-party reviews, and regular customer site visits safeguard the reliability our name is built on. Each new regulatory requirement, color standard, or purity norm comes with an opportunity: to deepen the producer-user relationship and drive process improvement.
Our workers notice that many end-users face increased pressure for speed and accuracy in their own operations. Problem-solving for them means planning substitute shipments, consulting live for on-site troubleshooting, or even jointly redesigning blending protocols based on specific batch tests. Every kilogram of 1,8-Naphtholactam shipped is backed by our real-world expertise—not simply factory automation or unmonitored logistics partners.
Years of manufacturing experience show that trust grows from transparency. We built our business on forging long-term partnerships, solving problems before they grow, and following up every delivery with support that runs from the lab to the final application. Traceability, openness on process and batch differences, and steady investment in both talent and equipment define our approach to 1,8-Naphtholactam supply. Our commitment is not only to deliver product—but to help customers succeed by sharing experience, adjusting to feedback, and always putting consistent chemical quality at the center of our work.