|
HS Code |
103433 |
| CAS_Number | 91-57-6 |
| Molecular_Formula | C11H10 |
| Molecular_Weight | 142.20 g/mol |
| IUPAC_Name | 2-Methylnaphthalene |
| Appearance | Colorless to pale yellow liquid |
| Boiling_Point | 245 °C |
| Melting_Point | 33.9 °C |
| Density | 1.00 g/cm³ at 20 °C |
| Flash_Point | 108 °C (closed cup) |
| Solubility_in_Water | Insoluble |
| Vapor_Pressure | 0.2 mmHg at 25 °C |
| Odor | Aromatic |
| Refractive_Index | 1.614 at 20 °C |
| PubChem_CID | 7236 |
| UN_Number | 1993 |
As an accredited 2-Methylnaphthalene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 2-Methylnaphthalene, 500g: Amber glass bottle with chemical-resistant cap, labeled with hazard symbols, product name, and safety information. |
| Shipping | 2-Methylnaphthalene is shipped as a hazardous material due to its flammability and potential health risks. It is transported in tightly sealed, chemical-resistant containers, clearly labeled according to regulatory standards. Shipments must comply with relevant DOT, IATA, and IMDG regulations, ensuring proper documentation, handling, and safety measures during transit and storage. |
| Storage | 2-Methylnaphthalene should be stored in a cool, dry, and well-ventilated area, away from sources of ignition and incompatible substances such as strong oxidizers. Keep the container tightly closed, protected from sunlight, and clearly labeled. Use chemical-resistant containers, and ensure proper grounding to prevent static buildup. Store in accordance with local, regional, and national regulations. |
Applications of 2-Methylnaphthalene in Industrial ManufacturingAs a direct manufacturer of 2-Methylnaphthalene, we support downstream industries that rely on this specialty aromatic for its unique reactivity and structural role in organic synthesis. Below, we detail specific, established applications across major industrial segments, including compliance guidelines, dosing principles, integration in production, and end-market product categories. 1. Organic Pigment Intermediate for Naphthalimide DyesNaphthalimide pigments, widely used in plastics, coatings, and inks, rely on 2-Methylnaphthalene as an essential intermediate in the synthesis of mono- and diimide structures. The material enters the azo-coupling and imidation sequence, providing both chromophore backbone and enhanced light fastness for the final pigment. Our long-term pigment manufacturing clients value stability in isomer ratio and low trace impurities, which directly impact the shade strength and migration resistance of high-performance yellow and green pigments. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
2. Agrochemical Active Ingredient Synthesis (Pyridine-Based Molecules)2-Methylnaphthalene serves as a key aromatic building block in the production of modern agrochemical intermediates, including select pyridine-based herbicides and fungicides. Its methyl group allows precise alkylation or ring functionalization, supporting both heterocycle construction and improved active ingredient selectivity. Agriculture chemical formulators depend on purity and trace contaminant control to maintain registration status and product stability. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
3. High-Performance Liquid Crystal Polymer (LCP) Monomer PrecursorLiquid crystal polymer producers use 2-Methylnaphthalene for its ability to introduce lateral methyl branches that encourage mesogenic alignment and processable melting points in thermotropic polyesters. Precision dosing and refined feed quality are critical during the acylation and esterification stages, where the aromatic substrate’s uniform reactivity affects resulting polymer anisotropy and mechanical attributes. Consistent supply and process integration reduce the risk of undesirable insolubles or color bodies in optical-grade final resins. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
4. Specialist Fuels & Aromatic Solvent CompoundingWithin fuels research and specialty solvent development, manufacturers employ 2-Methylnaphthalene as a performance marker hydrocarbon and solvency regulator. Laboratories and additive blenders appreciate its well-characterized ignition influence and defined aromatic nature for calibration blends, reference tests, and controlled solvent profile formulation. Accurate blending minimizes off-target combustion artifacts and ensures compliance with ongoing fuel standard revisions. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
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In the world of chemical intermediates, the slightest shift in composition can make a significant difference at the factory level. At our production plants, we dedicate careful attention to 2-Methylnaphthalene, not just as another naphthalene derivative, but as a workhorse that shapes a variety of high-value end products. Every kilogram that leaves our reactors draws from decades of operational feedback, raw material management, and stringent quality monitoring.
2-Methylnaphthalene, often described through its molecular formula C11H10, arises through distillation processes that prioritize both purity and safety. Our teams follow clear standards in its separation from the tar distillation fractions. We always look at melting point, boiling range, and specific impurities because these small differences can affect how consistently downstream industries get the results they expect.
From the manufacturing floor to the end application, 2-Methylnaphthalene offers unique value. While naphthalene itself finds utility as a raw material, introducing that methyl group at the 2-position brings a set of physical and chemical properties that other isomers or analogs do not match. For our clients, this difference shows up in the stability of dye intermediates, the quality of agricultural chemicals, and sometimes even in the insurance of product performance where trace impurities would cut into yields.
Many colleagues recall how several years ago, inconsistency in certain aromatic intermediates drove losses in pigment synthesis. Through deeper collaboration with end users, we optimized our distillation routines and analytical controls. Gradually, our 2-Methylnaphthalene gained a reputation for delivering better batch-to-batch reliability. That instilled confidence in purchasers managing high-throughput facilities.
Current demand comes from fine chemicals, dye manufacturers, and pesticide producers. In those uses, uncontrollable side reactions can halt production, so the trace profile—down to the smallest aromatic contaminant—measures our real-world success. We invest in chromatography and regularly update our specifications. By running side-by-side comparisons within our own process development lab, we keep track of how our product fares against both earlier batches and competitor samples in stress testing environments.
A lot of buyers want to know what differentiates our 2-Methylnaphthalene from competing products. Over years of direct feedback, we found that clarity starts with practical, experience-based specifications. In our operation, color and clarity in the final distillate point to proper separation. Assayed typically at greater than 97.5% by GC, our commercially available grade brings a balance between cost and technical requirements.
Water content stays low, generally under 0.05%. Each batch undergoes checks for sulfur and nitrogen contaminants due to their negative impact on further reactions. Packing experts in our plant have learned to minimize exposure to air, as even small oxidized byproducts trouble certain uses. By keeping to our internal benchmarks, lots show minimal deviation, reducing stoppages and troubleshooting downstream.
Many buyers asked early on about crystal size. While it seems a minor aspect, too fine a material can dust and too coarse makes handling inconvenient. With past handling problems in mind, we monitored and adjusted cooling rates in our crystallization tanks, ensuring a manageable consistency. Seasonally, ambient temperature shifts can alter drying parameters. Our people adjust the process to match, which has proven more effective than any blanket approach.
It is easy on paper to blend 2-Methylnaphthalene into the category of naphthalene-based intermediates. On the production line, the distinctions drive real operational change. Straight naphthalene comes out as a bulk commodity and has broad use, but functionalizing it at the 2-position opens a sharper reactivity profile. Naphthalene isomers, notably 1-methylnaphthalene, do not perform the same in catalytic or condensation reactions; that matters in color development and pesticide precursor manufacturing.
The 2-position substitution delivers better selectivity in the formation of specific phthalic and anthraquinone derivatives. In contrast, 1-methylnaphthalene often delivers unwanted by-products at key steps—a lesson learned in our early pilot-scale trials. Also, 2-Methylnaphthalene’s melting point, a touch lower than unsubstituted naphthalene, creates safer handling parameters for some users who need material to melt or dissolve rapidly in industrial conditions.
Raw material sourcing for this compound often comes from high-temperature coal tar, sometimes from petroleum fractions depending on the availability and economics. The variability in these sources makes in-line process monitoring a necessity. Our operation has invested in near-infrared and gas chromatographic analysis on the run, not just at the finished-product stage. Customers chasing regulatory compliance—especially when final goods end up in Europe or North America—rely on documentation that covers trace contaminant thresholds, such as PAHs and trace metals, far below legacy standards.
Plant operators and lab chemists have a saying: the proof rides on the yield slip. Our 2-Methylnaphthalene consistently holds up in that regard. Partners in dyes and agrochemicals have returned with data—not just impressions—that their conversions have improved, downtime shortened, and crude intermediate color has grown more consistent with our material compared to previously sourced lots.
One large pigment facility provided six quarters of analysis showing less batch rework after switching—not because our product appears different by eye, but due to reduced off-spec impurity peaks, especially quinoline-type side products. We trace that back to aggressively managed fractionation steps and a refinement in our distillation packing years ago that helped us eliminate marginal “carry-over.” These lessons can only come from regular trouble-shooting and not from relying solely on published literature.
Because this molecule introduces methyl at a point that influences how it interacts during further synthesis, technicians report tighter control loops in oxidation and alkylation downstream. While a generic naphthalene may serve volume applications such as mothballs or basic surfactants, high-value intermediates ride on the purity and style of this compound. For companies focused on minimum defect rates in colorants, these outcomes translate directly into lower final costs.
As a producer, operating with safety takes priority. 2-Methylnaphthalene carries a distinct aromatic odor, and plant workers get immediate training on vapor handling. Our practice keeps all transfer under contained conditions with vapor recovery systems, both to improve air quality in the facility and to prevent any unnoticed loss at interface points.
We participate in industry audits related to emissions, storage practices, and worker exposure. Many of these efforts echo requirements from our broad customer base that demands traceability from raw material receiving through final shipment. For those in compliance or regulatory roles, the chain of custody is not just a formality but a form of risk management. We supply all documentation not because we are mandated to do so but because in our field, overlooked details turn into costly recall events—events we have learned to avoid.
Our facility maintains on-site spill containment, alarm systems, and bulk storage monitored for leaks or irregularities. Because we process larger volumes, we pushed for automation in our drum and tank loading zones. Operators use real-time monitoring while automated shutoffs act well before any significant release. These systems do not replace personal vigilance. They support it, so work proceeds as safely as possible even in high-throughput cycles.
The feedstock behind 2-Methylnaphthalene rides on broader swings in the coal and petrochemical markets. Some years, raw naphthalene becomes more expensive or arrives with higher margins of tar acids and minor aromatics, forcing rebalancing in the plant. We track global commodity fluctuations and maintain transparency with our buyers when market conditions justify changes. Trusted relationships—built on experience—allow everybody to plan their operations with clear expectations and not suffer unnecessary setbacks.
Occasional feed disruption, such as sudden transport bottlenecks or policy shifts affecting tar production, can squeeze downstream users. We developed a secondary sourcing plan and even keep limited spot storage for key partners. Over time, that’s proven instrumental during both regulatory and commercial disruptions. It is not a practice that comes from a contract clause or a standard operating procedure guide, but rather from decades of facing the on-the-ground facts of chemical supply.
Alternative synthetic routes, such as petroleum-based streams, sometimes support volumes during tight periods. But coal tar origins usually deliver the best aromatic profile for our 2-Methylnaphthalene. By monitoring both spectral and impurity data on incoming lots, we flag potential departures in quality before they reach finished-stage certification, taking no chances with customers’ processes.
No two production years resemble each other exactly. New user applications emerge, and client requests expand beyond straightforward requirements. High-performance organic electronics, advanced engineering polymers, and experimental pharmaceutical intermediates join the list of markets now evaluating 2-Methylnaphthalene. Each one brings a unique set of purity, color, and trace impurity requests. Our R&D staff frequently join customer engineers for direct discussions, aiming for workable solutions rather than theorizing in isolation.
Improving a known product like this compound means focusing on the details—sometimes it is a minor tweak in the heat exchanger setup, sometimes a tighter water removal at the decanter, and often it runs back to shifting the quality targets based on new data. We never claim to have settled the chemistry. Every lost hour in a drying step or abnormality in HPLC screening pushes us to narrow the variables and share those findings with our clients.
That level of transparency and forward development means our material stays relevant even as specifications grow more stringent year by year. Partners return because they value an honest opinion about what can be improved, what new regulations are emerging, and how changing feedstock trends might ripple into their cost base or final yield.
Dye intermediates represent the historical mainstay for 2-Methylnaphthalene. In the coloring of fabrics and plastics, producers prize stability and resistance to photodegradation. To meet these needs, we run extended storage stability testing. Feedback from customers in pigments enabled us to identify small shifts in color performance that trace back to seasonal variations in raw tar blends.
Agriculture brought a different challenge. In the formulation of particular pesticide actives, low odor and absence of residual sulfur byproducts became non-negotiable. Our analytical capabilities expanded to track these nuances. Reports from field users detailed crop outcomes and stress-tested different supply lots, tying performance back to consistent upstream purification.
Engineered plastics and advanced resin systems now form another growth area. Polymerization kinetics are sensitive to even light aromatic interference. Competing materials sometimes create gelling or discoloration. Our teams heard of these issues from technical staff in high-speed molding plants who trialed alternative supplies. We developed a protocol for confirming absence of trace inhibitors and coordinated side-by-side testing, which led to measurable improvements in yield and clarity.
Recently, electronics material developers approached us with inquiries on ultra-low trace contaminants. This led to specialized packing and shipping procedures, supported by regular audits. Our role revolves around adapting to specific project needs, learning directly from user outcomes, and adjusting our in-plant operations accordingly.
Running a chemical operation provides an education all its own. Equipment fatigue, minor process upsets, and the impact of seemingly small supplier changes are daily realities. In our experience with 2-Methylnaphthalene, just one unplanned deviation—a blocked condenser line, an off-tar fraction mix, or human error at sampling—teaches lessons that no specification sheet covers.
Quality ultimately stems from treating each production cycle as if the next user will test your reliability. As we built up our knowledge base, operators kept logs beyond the computer display—handwritten notes tracked odor, sheen, and fine visual cues. Many production improvements came from plant-floor insights, such as adding a heated coil to drum lines for easier winter discharge or rotating storage vessels to reduce inhomogeneity on standing. Even as automation expanded, operator intuition—knowing what a “good” run looks and smells like—remains irreplaceable.
Customer needs have pushed us to stretch how we approach change control. Once, a new filtration step was wished for by a customer in electronics, aiming for even lower particulate content. Together, we trialed different mesh ratings and logged the outcomes. As the market for 2-Methylnaphthalene evolves, so does our readiness to experiment and refine.
In a crowded global market, reputation means more than price. Our philosophy starts with transparency—sharing both strengths and challenges openly so partners make informed decisions. The reliability in performance does not come from chance or by sticking to minimum requirements, but from a grounded commitment to technical improvement.
We maintain a record of meeting or exceeding not just domestic guidelines, but also major international benchmarks for purity and contaminant thresholds. Our shipments routinely pass independent analysis from Europe, the Americas, and increasingly, Asia-Pacific buyers. Documentation includes detailed chromatographic reports, and batches get traceability codes back to each production lot.
Any major deviation—be it a suspected contaminant, off-odor, or delivery irregularity—receives root cause analysis. Accountability and open lines of communication keep both us and users covered, reducing delays and waste. Many of our long-term partners grew from customers who first approached us when experiencing trouble with inconsistent supplies elsewhere.
While new markets for 2-Methylnaphthalene keep opening up, challenges never disappear. Environmentally, tighter controls on aromatic emissions and waste push us to design better reuse and recycling strategies. End-user industries demand lower impurities and questions from regulators grow more detailed every year.
On the technical side, potential for further functionalization excites R&D groups—new derivatization routes and uses in specialty polymers or even biomedical research attract growing interest. Each opportunity brings fresh sets of challenges, from scale-up bottlenecks to documentation burdens. As other regions increase their own capacity, we continue refining our processes, so our reliability and expertise remain an asset, not just another line item on a purchasing spreadsheet.
We invest in our people as much as our facilities. Training keeps safety standards front and center. Input from experienced operators and young engineers both combine in our continuous improvement teams to tackle process surprises, application feedback, or shifting regulatory requirements head-on.
2-Methylnaphthalene may appear on a spec sheet as just another aromatic hydrocarbon, but manufacturing it with consistent, high performance requires careful handling, regular adaptation, and constant dialogue with users in the field. Every run, every test, every customer report builds on a tradition of technical commitment. In our view, value springs from principles honed over years in the plant and through supporting every layer of production, ensuring industries get a partner they can trust—not just a supplier of intermediates.