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1,4-Dimethyl-2-Iodobenzene

    • Product Name 1,4-Dimethyl-2-Iodobenzene
    • Alias p-Iodomesitylene
    • Einecs 801-372-4
    • 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
    VTB
    Specifications

    HS Code

    645564

    Chemicalname 1,4-Dimethyl-2-iodobenzene
    Casnumber 1833-61-2
    Molecularformula C8H9I
    Molecularweight 232.07 g/mol
    Appearance White to off-white solid
    Meltingpoint 52-54 °C
    Boilingpoint 261-263 °C
    Density 1.69 g/cm3
    Purity Typically ≥98%
    Solubility Insoluble in water; soluble in organic solvents
    Synonyms 2-Iodo-1,4-dimethylbenzene; 2-Iodo-p-xylene
    Smiles CC1=CC(=C(C=C1)C)I
    Inchikey NMXCAXORBIDAMQ-UHFFFAOYSA-N

    As an accredited 1,4-Dimethyl-2-Iodobenzene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Amber glass bottle containing 25 grams of 1,4-Dimethyl-2-Iodobenzene, tightly sealed, with hazard and identification labels affixed.
    Shipping **1,4-Dimethyl-2-Iodobenzene** should be shipped in tightly sealed containers, clearly labeled, and protected from light and moisture. Transport must comply with local, national, and international hazardous material regulations. Ensure packaging prevents leakage and breakage, and include a properly completed safety data sheet (SDS) with the shipment for safe handling and emergency response.
    Storage 1,4-Dimethyl-2-iodobenzene should be stored in a cool, dry, and well-ventilated area, away from sources of ignition and incompatible materials such as strong oxidizers. Keep the container tightly closed and protected from light. Store in a dedicated flammables cabinet if possible, and clearly label the container. Avoid prolonged exposure to air to prevent degradation.
    Application of 1,4-Dimethyl-2-Iodobenzene

    Applications of 1,4-Dimethyl-2-Iodobenzene in Industrial Manufacturing

    As a direct manufacturer, we supply 1,4-Dimethyl-2-Iodobenzene to critical downstream industries. This raw material provides unique aryl iodide functionality, supporting advanced synthesis and specialty product development. Below, we detail major application segments that integrate this compound under controlled industrial protocols.

    1. Pharmaceutical Intermediate Synthesis

    Manufacturers of active pharmaceutical ingredients (APIs) employ 1,4-Dimethyl-2-Iodobenzene as an aryl iodide building block in multi-step organic synthesis. It serves as a key substrate for cross-coupling reactions, including Suzuki-Miyaura and Sonogashira couplings, to introduce functionalized aryl groups. The precise incorporation of the dimethyl-iodo-benzene core allows for the targeted development of advanced pharmaceutical intermediates under GMP conditions, with careful control of stoichiometry and purity to meet stringent regulatory requirements.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice Guide for Active Pharmaceutical Ingredients
    • United States Pharmacopeia (USP) General Chapter <1078>
    • European Pharmacopeia (Ph. Eur.) General Notices
    • FDA 21 CFR Part 210/211

    Typical usage ratio

    • 0.05–0.2 molar equivalents relative to key aryl halide substrates; ratio adjusted per target intermediate and stoichiometric requirements of the cross-coupling partners

    Downstream process integration

    • Charged at the stage of halogen exchange or palladium-catalyzed coupling after pre-activation of the catalytic system; quality monitored by HPLC or GC for each batch intake

    Final product types

    • Active pharmaceutical ingredients (e.g., CNS drugs, oncology candidates)
    • Specialty small-molecule intermediates for patented drug synthesis
    • Research-grade building blocks for medicinal chemistry labs

    2. Specialty Agrochemical Synthesis

    Producers in the agrochemical sector utilize this compound to introduce methylated aryl iodide moieties into advanced pesticides and herbicides. The selective iodination and controlled substitution facilitate synthesis of active ingredients with improved bioactivity and environmental stability. Process engineers carefully determine charge quantities based on the designed coupling route and regulatory lists of permitted substances, ensuring compliance throughout multipurpose agrochemical facilities.

    Industry compliance standards

    • FAO/WHO Food and Agriculture Organization Specification Series
    • OECD Principles of Good Laboratory Practice (GLP)
    • REACH (Regulation EC No 1907/2006) for agrochemical intermediates
    • ISO 9001:2015 Quality Management

    Typical usage ratio

    • 0.1–0.5 molar equivalents per target pyridine or benzonitrile scaffold; ratio tailored to downstream chlorination or bromination requirements

    Downstream process integration

    • Dosed in the main reactor during arylation or halogen substitution steps; handled under closed systems with dedicated vessel cleaning protocols

    Final product types

    • Selective herbicide intermediates
    • Fungicide precursor molecules
    • Novel insecticide actives based on iodinated arene derivatives

    3. OLED and Electronic Material Production

    Electronic and optoelectronic material manufacturers leverage 1,4-Dimethyl-2-Iodobenzene as a core structure for custom aryl building, especially in organic light-emitting diode (OLED) and organic semiconductors. The compound’s high halide content and methylation pattern advance next-generation emissive layer and charge transport molecule synthesis. Integration into advanced coupling reactions supports scalable batch processing with tight process control, optimizing purity and device-grade performance.

    Industry compliance standards

    • RoHS Directive (EU Restriction of Hazardous Substances)
    • IEC 62474 Standard for Material Declaration
    • ISO 14001:2015 Environmental Management for electronic chemicals
    • IPC-6012 Printed Board Standards

    Typical usage ratio

    • 0.05–0.3 molar equivalents according to specific aryl coupling requirements; adjusted based on molecular design for device integration

    Downstream process integration

    • Introduced during early or mid-stage monomer synthesis for molecule extension in solution phase; batch release follows GC-MS validation and optical purity checks

    Final product types

    • OLED emitter and transport layer precursors
    • Custom aryl intermediates for semiconducting polymers
    • Organic TFT material bases

    4. Advanced Dye and Pigment Manufacturing

    Specialist pigment and dye producers incorporate 1,4-Dimethyl-2-Iodobenzene within the synthesis of high-performance aryl dyes and pigments. Its role as an electrophilic aryl donor in metal-catalyzed coupling reactions enables fine-tuned chromophore design. Production lines in these facilities demand consistency in actives incorporation, precise monitoring of batch-to-batch variance, and alignment with regulatory pigment safety and sustainability requirements.

    Industry compliance standards

    • EN 71-3 for heavy metals in pigments (for toys)
    • Global Organic Textile Standard (GOTS) for pigment dyes
    • US TSCA (Toxic Substances Control Act) for industrial colorants
    • REACH Annex XVII substance restrictions

    Typical usage ratio

    • 0.1–0.25 molar ratio relative to color core starting materials; varying per desired color intensity and molecular architecture

    Downstream process integration

    • Dosed into the aryl coupling stage after initial oxidation/reduction; handled under color line controls and batch retention for compliance tracking

    Final product types

    • Azo and anthraquinone dye intermediates
    • Color-fast textile and plastic pigments
    • Special effects colorants for coatings and inks

    5. Liquid Crystal Intermediate Production

    Producers of high-purity liquid crystal materials for display and sensor technology incorporate this compound to build core aryl rings in advanced liquid crystal molecules. The methylated, iodinated structure assists in tailoring molecular polarity and phase behavior to meet specific display specification needs. Manufacturers pay close attention to the integration step, minimizing transition metal contaminant risk and certifying purity by advanced analytical methods prior to formulation.

    Industry compliance standards

    • JEDEC Solid State Technology Association Standards
    • ISO 9001:2015 for specialty chemical manufacturing
    • RoHS Directive for restriction of hazardous substances
    • Chinese GB/T 20406-2006 (Liquid Crystal Materials)

    Typical usage ratio

    • 0.02–0.15 molar excess depending on complexity of target biphenyl or terphenyl LC intermediate; controlled to balance yield and phase purity

    Downstream process integration

    • Added at the arylation stage when constructing the liquid crystal backbone; combined under inert atmosphere with pre-dried solvents

    Final product types

    • Liquid crystal monomers for LCD displays
    • Phase-modulating compounds for optical sensors
    • Temp-stable molecular alignment aids
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    Certification & Compliance
    More Introduction

    Introducing 1,4-Dimethyl-2-Iodobenzene: A Perspective from the Manufacturer

    Every day inside our plant, we see organic chemistry unfold not just in glassware, but in industrial quantities, driven by practical need and by the pulse of the market’s most demanding sectors. Among the aromatic halides crossing our production lines, 1,4-Dimethyl-2-Iodobenzene (sometimes recognized as 2-Iodo-p-xylene) has taken on a life of its own as an essential intermediate for chemical synthesis. We’ve lived with this molecule from its raw material days through to its final packaging, so we know precisely where its edge lies over other iodobenzenes.

    Crafting a Reliable Product in the Lab and on the Line

    The first thing we learned manufacturing 1,4-Dimethyl-2-Iodobenzene is that consistency in quality doesn't come from luck—it draws from steady process control and source material purity. Our method focuses on using well-characterized p-xylene as a starting point because we see fewer undesirable isomers when iodinating in controlled reactors. Chemistry is sensitive to every minute detail: even a small error in temperature or iodine addition spells hours of extra purification, so we control these parameters with digital systems monitored round-the-clock.

    The product, by nature, is a colorless to pale yellow crystalline solid—once in a while, a batch may carry slight variation in color due to trace impurities, and we catch these through thin-layer chromatography and HPLC checks. Our routine includes batch-to-batch tracking, meaning we can retrace any metric directly to the production date and the specific technicians on duty. Clients from pharmaceuticals, agrochemicals, and advanced materials keep us on our toes by refusing to accept variability in melting point or GC purity; our current product consistently rides above 98.5% purity as determined by area normalization on GC-FID. Melting point ranges hover around 60-62 °C, and our analytical team checks every drum before it ships.

    What Sets 1,4-Dimethyl-2-Iodobenzene Apart

    Customers sometimes ask us why one would choose a dimethylated iodobenzene over a single methyl or even the unsubstituted iodobenzene. Experience tells us that those two methyl groups play a crucial role in reactivity, not only acting as electron donors but also in controlling regioselectivity for further functionalization. Many cross-coupling reactions call for precisely this scaffold; for some Suzuki or Sonogashira reactions, the location of the iodine ortho to one methyl makes it easier for catalyst ligation, cleaner insertion, or milder conditions. Chemists who work at the bench understand that not all aryl iodides behave the same during metalation or lithiation. Anecdotally, we’ve seen partners in R&D prefer this molecule to avoid high temperatures or extended reaction times that come with less reactive derivatives.

    Looking deeper than structure, real-world use cases further highlight the difference: 1,4-Dimethyl-2-Iodobenzene often appears in the synthesis of pharmaceutical intermediates, especially scaffolds where the xylyl motif is pharmacologically active. In the agrochemical sector, researchers rely on it for building blocks in complex herbicide or pesticide synthesis, especially when seeking to introduce aryl groups via high-yielding palladium-catalyzed couplings. We also supply to electronics industry partners, where its stability and clean reaction profile contribute to organic semiconductor and advanced polymer workflows.

    Understanding Suitability and Handling in Industrial Use

    In our hands, 1,4-Dimethyl-2-Iodobenzene stands out for its balance of reactivity and manageability. Packing and shipping are straightforward due to its solid state at room temperature, allowing us to use lined fiber drums or heavy-duty polyethylene bags that keep the product free from moisture and photodegradation.

    On the plant floor, measuring and charging this solid is less hazardous compared to liquid halogenated aromatics. Less vapor means improved working conditions in terms of both safety and comfort. Colleagues in formulation often comment that the reduced volatility simplifies dust control and environmental monitoring during batch charging—in turn, that reduces spills and contamination, helping us meet workplace safety standards.

    Some customers attempt to substitute with cheaper aryl bromides or chlorides, but our data consistently shows that the iodo group’s higher reactivity reduces the number of side products in several catalytic couplings, translating into better overall yields or cleaner product profiles after downstream steps. We’ve participated in process optimization for partners both local and global and learned that a switch to our material cuts purification time by roughly 15-20% on scale. From a manufacturing point of view, every hour saved with less column chromatography means significant operational savings—not only solvents and adsorbents, but energy and wear-and-tear on equipment.

    Supporting Clients Beyond the Drum

    Entering the market as a direct manufacturer, we take pride in offering more than a product—we bring technical insight gained from every batch we’ve run and every troubleshooting session we’ve held. Whether it’s a pharma pilot plant looking for a new synthetic route, or a materials lab scaling an OLED precursor, we understand the impact of each impurity profile, shipment timeline, and packing method.

    It’s not unusual for partners to call up mid-project to ask for guidance on crystallization choices or to inquire about batch-specific spectral anomalies. We’ve invested in NMR, mass spectrometry, and advanced chromatographic capability not just for our own peace of mind, but to back up our partners punching through regulatory filing hurdles. We sit across the table from people who measure trace levels of heavy metals, residual solvents, or elemental iodine, and our documentation helps them tick the right boxes for global regulatory submissions—a detail that sometimes decides project approval or shelf-life extension.

    Over the last decade, we’ve adapted our purification practices in response to customer feedback. One recurring challenge has been solubility control during crystallization; some large-scale reactors face issues with incomplete precipitation leading to lower yields or occluded impurities. We responded by refining our cooling ramp profiles, adjusting solvent selection, and adding in-line drying to further reduce the moisture pickup. These changes stem not from theoretical best practices, but from hands-on cycle after cycle refining product so end users don’t experience downstream fouling or solubility surprises in their processes.

    Reliability and Supply Security in a Changing Market

    Manufacturing chemical intermediates in today’s environment means more than just meeting quality specs—it’s about resilience along the entire supply chain. Over the last years, global events and logistics hiccups have shown us the value of localized raw material sourcing and well-rehearsed contingencies for critical reagents like elemental iodine. Our size gives us leverage to negotiate with upstream suppliers and avoid single-source dependencies. We conduct on-site audits at regular intervals to make sure raw material quality won’t price us out of the market or compromise finished product integrity.

    Clients often feel the stress of sudden lead time changes, especially those tied to seasonal demand for pharmaceuticals and agrochemicals. We respond by building reasonable buffer inventory and maintaining regular dialogues with both buyers and transport operators. Last spring, a disruption in port access nearly delayed a shipment to a key partner. Thanks to responsive logistics teams and an on-site inventory buffer, product still arrived on time despite the challenges. We treat every relationship as a partnership, not just a transaction.

    Safety and Sustainability: Hands-On Commitment

    We’ve talked with environmental managers who want to know about the life-cycle impact of every kilo we produce. Our response draws on real efficiencies: closed-loop recovery of process solvents minimizes waste. We’ve invested in filtration and scrubber technology—this isn’t just a checkmark for audits; it matters for the air our people breathe and the water surrounding our facility. Each drum we ship carries a reduced freight footprint because we optimize fill volumes and loading schedules, so transportation is both safer and more efficient.

    There are still industry challenges left to address. Managing waste iodine and handling off-gas are technical problems for any large-scale aromatic iodination, but direct plant experience tells us that continuous flow reactors and improved reactors have drastically lowered our emissions over old batch systems. As regulations tighten, our team keeps its focus on further reducing residual iodine and other halogenated byproducts. Besides improving yield, these efforts have a direct effect on reducing hazardous waste and cost of compliance for those who rely on us.

    For customers with tough regulatory obligations, we supply product and documentation that support compliance with REACH, TSCA, and local requirements. We test for metals, halogen content, moisture, and residual solvents, then label each drum with batch-level analytical data. By shipping directly, we minimize product handoffs, reducing risk of contamination or adulteration, and making it easier for clients to trust each shipment’s provenance.

    Future Trends and What We’re Watching

    About once a quarter, we sit down to review changes in fine chemical demand. Lately, the growth in high-value pharmaceuticals and advanced materials is noticeable. Researchers request smaller, more frequent batches for prototyping; established manufacturers look for multi-ton lots. This puts pressure on us to stay nimble with reactor scheduling and warehousing, but experience tells us that flexibility is more important than ever.

    Rapid innovation cycles mean our product finds itself in new chemistry every year. Shortly ago, several startup labs trialed our 1,4-Dimethyl-2-Iodobenzene as a key intermediate in next-generation OLED and photovoltaic materials, citing clean conversion rates and low metal contamination as reasons for their switch. By keeping our analytical team involved at all stages, we collect feedback from early adopters—sometimes leading to a tweak in purification or even the introduction of specialty particle sizes.

    We’re also adjusting to sustainability demands: customers want product with a documented, minimized carbon and waste footprint. Our in-house audits and third-party assessments increasingly cover metrics like total energy consumed per kilo and per-drug-lot traceability of batch data. It’s a long road, but we see progress both in process intensification and recycling efforts.

    Why 1,4-Dimethyl-2-Iodobenzene Remains a Key Intermediate

    In everyday manufacturing, we measure our success not by flashy advertising but by how reliably we supply chemicals at the purity and scale needed. Over hundreds of batches and decades of market feedback, 1,4-Dimethyl-2-Iodobenzene stands up to the practical demands of pharmaceutically directed synthesis, material science innovation, and scale-up trials that turn fixed-bed reactor outputs into blockbuster launches.

    The product’s unique structure—iodine at the 2-position flanked by methyls—means it reacts where and when required. Specifying high purity isn’t a luxury for most clients; it determines process viability or even market advantage. With low-melting, easily handled crystals, we can safely load, store, and transport batches under conditions that satisfy stringent regulatory and user requirements.

    Among possible aryl iodides, this molecule simplifies downstream separations either by aiding catalyst selectivity or by reducing contamination risk, all while keeping plant operation safe. Manufacturers, researchers, and formulators share feedback directly, pushing us to continue tightening quality norms, technical documentation, and sustainability effort. No sales pitch compares to products that work every time. Industrial chemistry runs on materials like this—quietly carrying the load in labs and plants around the world.