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3-Methylindene

    • Product Name 3-Methylindene
    • Alias 3-Methyl-1H-indene
    • Einecs 211-976-5
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
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    Specifications

    HS Code

    943796

    CAS_Number 1606-41-5
    IUPAC_Name 3-Methyl-1H-indene
    Molecular_Formula C10H10
    Molecular_Weight 130.19 g/mol
    Appearance Colorless to pale yellow liquid
    Boiling_Point 237-239°C
    Melting_Point -6°C
    Density 1.004 g/cm³
    Flash_Point 82°C
    Refractive_Index 1.603-1.607
    Solubility_in_Water Insoluble
    SMILES CC1=CC2=CC=CC=C2C1

    As an accredited 3-Methylindene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 3-Methylindene is packaged in a 100g amber glass bottle with a secure screw cap and a detailed hazard warning label.
    Shipping 3-Methylindene is shipped as a chemical substance in securely sealed, appropriate chemical containers such as amber glass bottles to prevent light degradation and evaporation. Containers are packed with cushioning materials and labeled clearly with hazard and handling information. Shipments comply with all relevant regulations regarding flammable or hazardous materials transport.
    Storage 3-Methylindene should be stored in a tightly closed container in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizing agents. Protect it from sources of ignition, direct sunlight, and moisture. Ensure proper labeling and access only to trained personnel. Follow all relevant safety, storage, and environmental regulations when handling and storing this chemical.
    Application of 3-Methylindene

    Applications of 3-Methylindene in Industrial Manufacturing

    As a manufacturer of 3-Methylindene, we focus on supplying this specialty indene derivative to select downstream industries where its molecular structure delivers unique chemical performance. The applications below reflect real, in-market uses established in our B2B partnerships, each governed by stringent industry protocols and technical requirements.

    1. Advanced Organic Synthesis for Specialty Aromatic Compounds

    Downstream fine chemical producers apply 3-Methylindene as a targeted building block in complex multi-step organic syntheses, particularly in the production of high-purity substituted naphthalenes, polyaromatic hydrocarbons, and specialty ligands. Our technical partners rely on its defined methyl substitution pattern to construct frameworks for custom molecular architectures where isomeric purity directly impacts product performance and synthesis yield across pharmaceutical intermediates and advanced materials segments.

    Industry compliance standards

    • ISO 9001:2015 Quality Management for Specialized Chemicals
    • REACH (EC) No 1907/2006 Substance Registration and Use
    • IATF 16949 for automotive-grade chemicals (where applicable)

    Typical usage ratio

    • Typically 0.1–5% by molar ratio in the formulation stage; precise amounts depend on target molecular weight and desired substitution pattern.

    Downstream process integration

    • Introduced during the initial step as a core reactant or in late-stage steps where specific methylated indene units are required, especially during aromatic ring construction or Diels-Alder cycloaddition reactions.

    Final product types

    • Pharmaceutical intermediates
    • Custom functional dyes
    • Advanced materials for OLED and liquid crystals
    • Synthetic ligand precursors

    2. Performance Resin Manufacturing for Electronic Materials

    Several electronics-grade resin manufacturers specify 3-Methylindene as an intermediate monomer, where its structural features impart enhanced electrical insulation and improved film integrity. The methyl group arrangement influences resin cross-linking density and thermal behavior, essential for the formulation of photoresists, protective coatings, and encapsulants used in microelectronic fabrication. Our production applies non-metal catalytic processes to meet the exacting standards required for electronics manufacturing environments.

    Industry compliance standards

    • IEC 61249-2-7 for base materials in printed wiring boards
    • RoHS Directive 2011/65/EU for hazardous substances
    • UL 94 for flammability of plastic materials

    Typical usage ratio

    • Added at levels of 1–8% w/w in monomer batches; adjusted for targeted molecular weight and thermal properties of the final resin system.

    Downstream process integration

    • Incorporated during the monomer blending phase, followed by polymerization (often via cationic or radical processes), and subsequent co-formulation with specialty cross-linkers before reactive extrusion or casting.

    Final product types

    • Photoresist resins for semiconductor lithography
    • Conformal coatings for PCBs
    • Potting compounds for microchips

    3. Polycyclic Aromatic Hydrocarbon (PAH) Reference Standards

    Analytical laboratories and standard manufacturers incorporate 3-Methylindene as a calibrant or reference standard in quantitative analysis of polycyclic aromatic hydrocarbons, particularly for environmental and occupational health monitoring. Its defined structure enables precise calibration curves in chromatography-based molecular identification assays, required by regulatory agencies for PAH fingerprinting and trace detection in soil, air, and hydrocarbon samples.

    Industry compliance standards

    • EN ISO 17034 for Reference Material Producers
    • US EPA Methods 610 and 8100 for PAH analysis
    • ISO 28540:2011 for water quality – determination of PAH

    Typical usage ratio

    • Standard solutions are prepared using 0.1–100 μg/mL concentration grades; batch-to-batch consistency and traceability are rigorously maintained.

    Downstream process integration

    • Dissolved in high-purity organic solvents to create primary and secondary PAH standards, dispensed into ampoules or vials under GMP-compliant conditions.

    Final product types

    • Certified calibration standards for GC/MS and HPLC
    • Quality control materials for lab accreditation
    • Proficiency testing reference kits

    4. Research and Synthesis of Indene-based Ligands for Catalysis

    Catalyst designers, especially in academic and industrial R&D, source 3-Methylindene for the custom synthesis of organometallic ligands. Its methylated backbone supports tunable electron density and steric effects, facilitating the manufacture of non-symmetric ligands used in polymerization, hydrogenation, and C-H functionalization processes. Our quality assurance supports traceable batch records for researchers scaling from benchtop syntheses to pilot-scale test runs in innovative catalytic chemistry programs.

    Industry compliance standards

    • GLP-compliant synthesis protocols
    • ISO 9001 for laboratory chemicals
    • Internal SOP traceability in ISO/IEC 17025-accredited environments

    Typical usage ratio

    • Employed at 0.05–2 equivalents versus transition metal centers; ratio modified based on catalyst design and steric requirements.

    Downstream process integration

    • Synthesized into ligand structures by Friedel-Crafts alkylation or cross-coupling, then complexed with transition metals to yield active catalyst materials for test and scale-up runs.

    Final product types

    • Indene-based phosphine or NHC ligands
    • Asymmetric hydrogenation and olefin polymerization catalysts
    • Homogeneous catalysts for specialty fine chemicals

    5. Intermediate for High-Temperature Polymer Precursors

    Manufacturers of specialty high-performance polymers use 3-Methylindene in feeds for polyimide, polyarylene, and aromatic ladder polymer syntheses. Its presence in diamine or dianhydride intermediates imparts improved glass transition temperature and oxidation resistance, critical for fabrication of aerospace and automotive components exposed to extreme service conditions. Our supply supports integration into both solution and melt polymerization platforms to meet downstream demands for mechanical and thermal stability.

    Industry compliance standards

    • ASTM D5336 for polyimide materials
    • SAE AMS 3630 for aerospace polymers
    • ISO 9001:2015 for specialty polymer production

    Typical usage ratio

    • Blended at 0.5–5 mol% depending on desired backbone modification and targeted Tg; higher content when increased thermal resistance is required.

    Downstream process integration

    • Fed into diamine or monomer synthesis reactors, followed by polycondensation or thermal rearrangement steps, and cast or spun into films, fibers, or composite pre-pregs.

    Final product types

    • High-temperature polyimide films
    • Automotive and aerospace composite pre-pregs
    • Insulation and sealing materials
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    Certification & Compliance
    More Introduction

    3-Methylindene: A Chemical Manufacturer’s Perspective

    Background and Development

    Every batch of 3-Methylindene we produce reflects a tradition of chemical craftsmanship that extends through decades of hands-on manufacturing experience. In the realm of hydrocarbons, indene derivatives have carved out a crucial niche, and 3-Methylindene exemplifies this progress with its unique properties and growing list of practical applications.

    Chemists often seek out indene-based compounds for their aromatic ring structures and versatility in organic synthesis. 3-Methylindene stands apart because of the extra methyl group attached to the indene core. Through direct synthesis routes and rigorous quality control, we have refined our methods to deliver high-purity 3-Methylindene for downstream users who take molecular precision seriously.

    Our facility has invested deeply into optimizing both yield and purity. Over the years, we noticed the impact of minor impurities on downstream reactions—so we doubled down on chromatographic purification and advanced distillation protocols. Our teams do not treat each batch as just another product run; there is pride taken in making sure that when a customer investigates the GC data, the peaks line up just as predicted by the chemistry.

    Chemical Model and Specifications

    The molecular structure of 3-Methylindene features a fused bicyclic aromatic hydrocarbon—a benzene ring fused to a cyclopentene—modified with a methyl group at the 3-position. The presence of this methyl group not only alters reactivity compared to plain indene, but it opens up possibilities for further synthetically useful transformations.

    From a manufacturer’s perspective, what matters most is not only consistent molecular weight or purity (we regularly hit and surpass common industry benchmarks for organic intermediates), but also the consistency in the small details batch after batch. Over years of observations and feedback from process chemists and R&D partners, we've come to appreciate how small differences in melting point, boiling point, or stability under processing can make or break a project further on down the line. Our specifications reflect real-world application needs, not just data sheets.

    For 3-Methylindene, proper handling remains straightforward—our facility emphasizes strict storage at ambient temperatures, away from light and excessive moisture, an approach rooted in years of practice rather than just following guidance. Regular in-house analytical work, often using gas chromatography and NMR spectroscopy, guides our quality control rather than relying on external testing.

    Applications and End Uses

    3-Methylindene makes its way into a mosaic of chemical projects. In our direct experience, researchers prefer it over basic indene when the synthetic path demands a tailored substitution pattern. The methyl group can block certain reaction sites while enhancing reactivity at others, granting chemists an extra degree of freedom for selective reactions. Over hundreds of customer conversations and multiple collaborations with R&D labs, it’s clear users value these subtle but reliable differences.

    Industrially, one finds 3-Methylindene playing a starring role in the development of specialized resins, adhesives, and high-value intermediates. More recently, we have seen increased interest from sectors working with advanced polymer technologies, where precision in monomer feedstock defines the properties of the final product.

    In university and industrial labs, synthetic chemists utilize 3-Methylindene’s structure as a jumping-off point for more complex molecules. Custom ligands, hydrogenation catalysts, and organic materials often trace their backbone to a starting scaffold based on methylindene. It’s the versatility, combined with the reliability of supply, which draws repeat customers back.

    Distinguishing Features of 3-Methylindene

    The differences between 3-Methylindene and its chemical cousins may seem subtle at a cursory glance, but the impact on actual processes can be substantial. From years spent listening to feedback from researchers, production engineers, and pilot-plant operators, several key advantages become apparent.

    Plain indene, though valuable in its own right, presents certain limitations in selectivity for synthetic organic chemists. Reactive sites remain exposed, leading to side reactions that reduce total yield or complicate purification. The introduction of a methyl group at the 3-position in 3-Methylindene changes the playing field. Steric and electronic effects begin to steer the chemistry in user-friendly directions: selectivity improves, unwanted by-products diminish, and the synthesis often becomes more economically viable at scale.

    From the view inside the plant, 3-Methylindene also behaves more favorably in storage and transfer operations compared to some more voluminous or less stable aromatic intermediates. Over the years, we have learned where bottlenecks arise and how small molecular changes pay dividends in transport safety and extended shelf life.

    Other methylindene isomers (such as 1- or 2-Methylindene) possess different reactivity profiles. Experimentalists focused on cross-coupling, or Diels-Alder chemistry, quickly point out that those subtle shifts in substitution patterns translate to real-world differences in outcomes. Choosing the correct isomer, produced reproducibly at scale, can make the difference between an easy process and repeated headaches in the lab or reactor bay.

    Our Manufacturing Experience

    Manufacturing 3-Methylindene requires experience and flexibility. Over time, we have transformed what started as lab-scale experiments into ton-scale, tightly controlled chemical production. Early challenges included managing exothermic reactions and perfecting selective catalytic cyclization. Many lessons flowed from these challenges, pushing us to enhance reactor design, invest in experienced operators, and maintain agility in batch scheduling when demand surges.

    Throughout these years, we found that training makes the difference between average and excellent. Supervisors coach new chemists on how to spot subtle color changes or odors that indicate shifts in precursor purity. Every seasoned plant operator can recount stories of critical batches where attention to these details made the difference.

    Today, our plant relies on real-time data monitoring, feedback from analytical labs, and regular reviews between operations and customer service teams. That feedback loop means we see issues not just from our own vantage point, but through the eyes of our customers as well. Whenever a customer raises a concern over a downstream process, our technical teams work backwards: reviewing shared spectra, process logs, and even, in a few memorable cases, running parallel pilot syntheses to root out the cause of minor reactivity shifts.

    In our experience, certification and regulatory documentation often lag behind ongoing product improvements. Many of our partners value documentation, but what often closes the deal is hearing directly how our methods reduce variations that trip up competitors. Meeting customer requirements involves listening to intended uses, reviewing project timelines, and, when necessary, tweaking purification protocols to match what the synthesis teams really need.

    Supplier-User Synergy

    Manufacturing and supplying a product like 3-Methylindene isn’t simply a one-way process dominated by paperwork and shipments. Success depends on continual open dialogue with users—from lab-scale researchers to commercial-scale process managers. Over the years, we have built a habit of collaborating with users on analytical method development, reaction optimization, and troubleshooting. This keeps our production and QC teams closely engaged with the evolving needs of the market.

    For instance, there was a time when a customer’s process suddenly began yielding minor side-products not previously seen. After collaborative investigation, we learned that a change in one precursor lot (outside our facility) affected the reaction pathway. By sharing sample lots and running side-by-side analyses, both teams identified the subtle shift and recalibrated their procedures—improving reproducibility on all sides.

    The hands-on approach, of actually seeing how 3-Methylindene performs outside our own quality wall, informs the way we design future batches. Years of these partnerships underline a simple truth: sustainable chemical manufacturing means staying invested in users’ real-world outcomes, not just churning out a chemical to spec.

    It’s common that research teams want custom-scale quantities for preliminary trials. We engage early on, reviewing synthetic routes, suggesting alternate packaging, and even scaling trial batches down or up as needed. Many contracts now include options to adjust shipment sizes, blend specifications, or hold product in reserve for critical project timelines. Long-term relationships and trust grow from this flexibility, and they’re a lot harder for commodity resellers to replicate.

    Quality Control Rooted in Practice

    Behind every drum or flask of 3-Methylindene leaving our facility stands a chain of experienced chemists, supervisors, and QC analysts who have weathered both routine days and demanding situations. Rather than rely on templates, our team actively manages product quality based on human oversight—supported by but never subordinate to automated systems.

    Routine sample checks catch more than just purity readings. Operators smell, observe, and feel for physical cues that signal deviations from past runs. We believe that batch records serve more than regulatory needs. They collect real-world wisdom—how seasonal temperature shifts or slight reagent changes ripple through the process.

    Those learnings get translated into incremental improvements: refining a filtration step here, optimizing storage drums there, or tweaking nitrogen blanketing based on feedback from partners who encountered issues with static build-up in their own facilities. This cycle of empirical improvements strengthens every production run, helping deliver a product that meets and exceeds laboratory as well as industrial standards.

    Environmental and Safety Perspectives

    Environmental stewardship and workplace safety guide every stage of our chemical production. Over time, we have shifted to closed-system handling to minimize volatile emissions and invested in thermal oxidizers to handle vent streams. Our own experience drives sensitivity to even minor leaks or spills—operational changes often arise from direct encounters by plant staff, not just by-the-book compliance.

    Material safety extends to packaging and transport. After seeing how rough handling in transit could affect purity, we sourced new drum liners and developed tamper-evident seals. Trained staff inspect every load pre-shipment. By listening to stories from customers—who sometimes recount problems with poorly-packed chemicals from less thorough suppliers—we learned not to cut corners where safety and environmental responsibility are concerned.

    Waste management follows a similar path. Early runs taught us that by-products create bottlenecks. Today, every waste stream is analyzed for potential reclamation or energy recovery. Nothing leaves our plant that we can responsibly convert or recycle. The enthusiasm for these measures doesn’t arise from external pressure. Our workers live near the plants, and community reputation carries weight.

    Market Trends and Adaptation

    Market demand for 3-Methylindene fluctuates with shifts in research and manufacturing priorities across multiple sectors. Surges often follow advances in materials science or pharma, where new active ingredients or advanced polymers demand highly specific intermediates. We keep a close watch on academic literature, patent filings, and customer feedback to anticipate changes.

    As requests shift toward greener, safer chemistries, our teams respond with process improvements: developing lower-emission reaction cycles, evaluating alternative solvents, and working up catalyst options that reduce metal waste. Some years ago, a notable uptick in demand for bio-based feedstocks prompted us to review whether renewable precursors could be integrated without losing product quality. Though not every approach worked out, sharing results with partners helped speed up broader industry learning.

    Long-term adaptability often makes the difference between a product line that grows and one that stalls. The insights we harvest from customer feedback fuel investment in pilot facilities, inform training modules, and refine our downstream partnerships. New projects sometimes require us to develop fresh specification parameters—purity cutoffs, maximized selectivity, or stability under modified shipping regimes—responding directly to project-specific needs rather than imposing one-size-fits-all solutions.

    Transparent communication about product changes, batch variations, or supply chain bottlenecks has paid off during turbulent times. By keeping partners in the loop, we can cooperatively manage stock, prioritize shipments, and even pool technical expertise where mutual benefit exists. That’s not just business as usual—it’s how we cultivate robust supply chains that withstand unpredictable global changes.

    Looking Ahead: Sustainable Production

    The future of 3-Methylindene production rides on sustainable practices and continued collaboration. Internally, we maintain an active research group dedicated to optimizing yield, minimizing waste, and exploring new catalytic methods. Relationships with universities and industry labs build a feedback loop that encourages not just product innovation, but process innovation—delivering new ways to reduce resource use, improve safety, and expand potential applications for methylated indene derivatives.

    Investment in digital process monitoring, automation, and scenario planning help us scale quickly to match shifts in demand. By connecting expertise from frontline operators, analytical chemists, and managers, we manage risk and uncover opportunities that might go unnoticed in a more rigid or impersonal organization. Often, production ideas arise from informal conversations in the break room just as much as from formal planning meetings.

    We continue to evaluate how new regulatory trends and customer needs affect our workflow. As sustainability takes on larger importance for end-users in Asia, Europe, and North America, we emphasize transparency in feedstock origin, supply chain traceability, and operational carbon footprint. Sharing this information builds trust and attracts partners who value not just the molecule, but the integrity behind its manufacturing.

    3-Methylindene’s story will keep evolving as new markets and applications develop. By prioritizing clear communication, technical excellence, and genuine commitment to improvement, we aim to set a standard for what responsible chemical manufacturing can accomplish. Every day, we learn that serving both the science and our customers’ ambitions means asking tough questions, staying curious, and recognizing the value in precision-grown experience.

    Direct Knowledge: Lessons from the Chemical Floor

    Every bottle and drum that leaves our plant represents more than molecules on a manifest—it carries the chain of decisions, improvements, and lessons that stem from decades at the chemical bench and in the production hall. Over countless runs, we have learned that the real measure of a chemical’s worth rests with its users. Each complaint, suggestion, or note of thanks feeds back into how the next run will go.

    Chemists in our process team recount discovering minor variables—a trace impurity in a solvent here, a temperature shift during distillation there—that changed the profile of a whole batch. Through careful logging and open review, our plant culture rewards transparency and teamwork over blaming or finger-pointing. We stock up on the patience required to run reproducible, safe product runs not because a manual dictates it, but because daily experience shows that short-cuts cost more in the long run.

    Stories circulate from the floor—how a pilot-scale run of 3-Methylindene supported a breakthrough in a partner’s new polymer formulation, or how quick intervention during a spike in ambient temperature saved a key shipment from possible degradation. These moments become part of the collective memory that defines our standards and shapes how we respond to each new challenge.

    Day-to-day, decisions about raw material sourcing, waste treatment, and staff training feed back directly into our product quality and reputation. Everyone knows that building a better batch of 3-Methylindene means building better relationships—inside the company, and with every customer that stakes their project outcomes on our reliability.

    Commitment to Evolving Needs

    Manufacturing chemicals like 3-Methylindene carries a responsibility to serve both the needs of the end user and the wellbeing of the broader environment. Every insight we gain from our own labs, from partners, and from hands-on practice makes the difference between ordinary supply and a chemical partnership.

    Our experience year after year points toward the value of transparency, active feedback, continuous improvement, and dedication to responsible growth. As new projects and new tech emerge, we stand ready to adapt—knowing that real value grows from long-standing practice, proven skill, and ongoing dialogue with those who transform our product into tomorrow’s essential innovations.