Products

4-Bromo-1,2-Dimethylbenzene

    • Product Name: 4-Bromo-1,2-Dimethylbenzene
    • Alias: 4-Bromo-o-xylene
    • Einecs: 629-042-7
    • Mininmum Order: 1 g
    • Factroy Site: Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry: admin@ascent-chem.com
    • Manufacturer: Ascent Petrochem Holdings Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    678561

    Chemicalname 4-Bromo-1,2-dimethylbenzene
    Molecularformula C8H9Br
    Molarmass 185.06 g/mol
    Casnumber 24454-77-1
    Iupacname 4-Bromo-1,2-dimethylbenzene
    Appearance Colorless to pale yellow liquid
    Boilingpoint 222-224 °C
    Density 1.366 g/cm3
    Smiles Cc1cc(C)ccc1Br
    Inchi InChI=1S/C8H9Br/c1-6-4-5-8(10)7(2)3-6/h3-5H,1-2H3
    Solubilitywater Insoluble
    Refractiveindex 1.570

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

    Packing & Storage
    Packing The 100g bottle of 4-Bromo-1,2-Dimethylbenzene arrives in amber glass, tightly sealed, with hazard labeling and detailed product identification.
    Shipping **Shipping of 4-Bromo-1,2-Dimethylbenzene:** This chemical is shipped in tightly sealed containers, protected from light and moisture. It is classified as a hazardous material, requiring labeling in accordance with international transport regulations. Transport should be by ground or air with proper documentation, ensuring compliance with all safety standards to prevent leaks or spills.
    Storage **4-Bromo-1,2-dimethylbenzene** should be stored in a tightly sealed container, kept in a cool, dry, and well-ventilated area, away from sources of ignition and incompatible materials such as strong oxidizers. Protect from direct sunlight and moisture. Properly label the storage container, and follow standard protocols for handling flammable and harmful chemicals to ensure safety.
    Application of 4-Bromo-1,2-Dimethylbenzene

    Applications of 4-Bromo-1,2-Dimethylbenzene in Industrial Manufacturing

    As a chemical raw material manufacturer, we supply 4-Bromo-1,2-Dimethylbenzene to partners across advanced industrial sectors. The following application scenarios demonstrate actual downstream uses, formulation integration, quality compliance, and end-product specifications within each segment.

    1. Pharmaceutical Intermediate Synthesis

    Pharmaceutical manufacturers use 4-Bromo-1,2-Dimethylbenzene as a halogenated aromatic intermediate for specific active pharmaceutical ingredient (API) syntheses focused on anti-inflammatory, antiviral, and oncological small molecules. Our facility supports commercial scale production for downstream drug synthesis, with precise in-process controls to eliminate cross-contaminants and residual solvents. The compound typically functions in Suzuki, Heck, or Grignard-type couplings with strict documentation for traceability. Finished APIs are then subject to rigorous internal QC requiring full impurity profiling related to halogenated starting materials.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • European Pharmacopoeia Monograph 2.9.13
    • US FDA cGMP 21 CFR Parts 210/211
    • Certificate of Suitability (CEP) requirements for EU supply

    Typical usage ratio

    • Stoichiometric use: 1.05–1.2 molar equivalents as coupling intermediate
    • Adjustable based on process yield and conversion rates
    • Impurity limits generally <0.1% in crude API stream
    • Final API formulations contain no residual parent raw material

    Downstream process integration

    • Loaded directly into stepwise batch reactors for halogen-metal exchange reactions
    • Enters protected environment with in-line NMR and LCMS monitoring
    • Participates in subsequent cyclization or amination steps
    • Removed by aqueous workup and crystallization prior to API cleanup

    Final product types

    • Anti-inflammatory drug substances for oral dosage
    • NCEs (New Chemical Entities) for antiviral treatments
    • Oncology drug API intermediates
    • Specialty pharmaceuticals under clinical research

    2. Agrochemical Intermediate Manufacturing

    Leading agrochemical formulators utilize this compound for production of selective herbicide and fungicide intermediates, targeting resistance management and increased crop yield. The bromo group provides a handle for direct substitution via organometallic attack, advancing to phenoxy, sulfonamide, or triazole-pyridine series actives. Process engineers maintain dedicated handling infrastructure to control occupational exposure and batch traceability. Residual level control plays an essential compliance role, particularly during multi-step synthesis involving hazardous transformation or when integrating with chiral auxiliaries.

    Industry compliance standards

    • ISO 9001:2015 for chemical manufacturing process controls
    • FAO/WHO specifications for pesticide technical materials
    • REACH registration as a phase-in substance (EC 1272/2008)
    • OECD guidelines for Residues in Crops (OECD 509, 501)

    Typical usage ratio

    • Applied at 0.95–1.10 molar equivalents relative to target structure
    • Batch adjustments made for conversion rates in copper-catalyzed steps
    • Residual parent compound in technical concentrate <0.2%
    • Downstream formulated goods ensure below detectable limits

    Downstream process integration

    • Reacted in metal-catalyzed aryl-alkyl coupling systems
    • Integrated into multistep plant protection ingredient manufacturing train
    • Used prior to chlorination or methylation stages for branded actives
    • Removed in Pre-Purification section using high-pressure chromatography

    Final product types

    • Selective broadleaf herbicides
    • Azole-based systemic fungicides
    • Custom pesticide intermediates for patent-protected molecules
    • Concentrated agrochemical technicals supplied to formulators

    3. Specialty Dye and Pigment Manufacturing

    Specialty dye producers employ 4-Bromo-1,2-Dimethylbenzene for molecular scaffolding in high-performance azo dye chromophores. Its positional methyl groups offer improved thermal stability during reactive dye transformations, while the bromine facilitates targeted substitution routes, optimizing colorfastness and light stability of textile and polymer pigments. Manufacturers use closed-loop reaction controls to minimize emissions and chromatographic techniques to ensure complete conversion for eco-label compliance. Analytical teams inspect batch consistency against industry shade standards and purity specifications aimed at textile export certifications.

    Industry compliance standards

    • OEKO-TEX® Standard 100 for restricted substances
    • EN ISO 105-C06 for colorfastness to washing
    • ZDHC MRSL Compliance for restricted substances
    • ISO 9001 certified pigment synthesis traceability

    Typical usage ratio

    • Used at 0.8–1.2 molar equivalents for azo-coupling reactions
    • Excess adjusted to optimize shade intensity and conversion
    • Residue limits in finished dye powders <0.15%
    • Continuous monitoring for unreacted aromatics

    Downstream process integration

    • Introduced after sulfonation as primary aromatic backbone
    • Process involves high-shear mixing, diazotization, and coupling
    • Directly linked to chromophore formation in batch reactors
    • Excess handled through in-plant solvent recovery and purification

    Final product types

    • Reactive azo dyes for cotton fabrics
    • Pigments for industrial polymer coloration
    • Custom colorants for plastics and automotive interior applications
    • Dyes compliant for food-contact packaging

    4. Electronic and Specialty Material Synthesis

    Electronic materials and specialty polymer manufacturers incorporate the bromoarene into fine chemicals used in cross-linked resin backbones, organic semiconductors, and advanced photoresist coatings. The bromo functional group enables precise arylation and polycondensation with controlled molecular weight targets. Operators maintain strictly anhydrous conditions throughout oligomerization to minimize organometallic side reactions. Regular in-process monitoring by HPLC and GPC ensures consistent monomer purity and batch-to-batch reproducibility. Downstream finishing units conduct advanced thermal and mechanical tests for device-grade applications and compliance with electronics industry reliability protocols.

    Industry compliance standards

    • IPC-4101 for base materials in printed circuit boards
    • IEC 61249-2 for halogenated flame retardants
    • RoHS Directive 2011/65/EU for restricted substances
    • UL 94 for flammability ratings on solid materials

    Typical usage ratio

    • Ratio of 5–10% by mol in monomer resin blends
    • Custom adjustment for target dielectric or photolithographic properties
    • Unreacted aromatic content in polymer matrix strictly controlled below 0.05%
    • Blended with other functionalized arenes for tailored performance

    Downstream process integration

    • Added in monomer feed to polycondensation reactors for advanced resin synthesis
    • Employed in Suzuki or Stille coupling in organic electronic material production
    • Downstream purification through multi-stage distillation and solid-phase extraction
    • Subjected to accelerated aging and electrical testing before market release

    Final product types

    • Printed circuit board laminates with halogenated flame retardancy
    • Photoresist materials for semiconductor lithography
    • OLED and organic transistor ingredients
    • Cross-linked specialty polymers for aerospace and automotive uses

    Free Quote

    Competitive 4-Bromo-1,2-Dimethylbenzene prices that fit your budget—flexible terms and customized quotes for every order.

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    Certification & Compliance
    More Introduction

    Introducing 4-Bromo-1,2-Dimethylbenzene: Precision and Consistency in Halogenated Aromatics

    What Sets 4-Bromo-1,2-Dimethylbenzene Apart

    Our years in fine chemical manufacturing have taught us the value of tight control over every step of the process. 4-Bromo-1,2-Dimethylbenzene, a halogenated aromatic compound, shows this commitment. Many organic syntheses and specialty applications call for this molecule due to its clean reactivity and predictable behavior under standard lab conditions. Its structure features a bromine atom on the number four position of a 1,2-dimethylbenzene ring. Slight changes in the location of the methyl or bromo groups on the ring can alter both reactivity and byproduct profiles. So, for consistent yields, we hold to strict monitoring of isomeric purity.

    Chemists often notice that minor impurities or positional isomers make reactions unpredictable. This rings true for 4-bromo-substituted xylenes, where trace contamination with other bromoxylene isomers can hinder multi-step syntheses. Our experience with various brominated aromatics has highlighted the extra attention needed to segregate these isomers throughout the production cycle. Separating the ortho, meta, and para forms—not just at the crystallization stage but also before and after bromination—proves crucial.

    Manufacturing with Technical Know-How

    Many first come across 4-Bromo-1,2-Dimethylbenzene while working with advanced intermediates or pharmaceutical building blocks. Sourcing it from a primary manufacturer, instead of an untraceable distributor network, gives direct access to the details of process quality, batch consistency, and lot traceability. Our reactors, filtration lines, and purification units have all been recalibrated through years of producing aromatic halides in scale, not just in lab beakers. Maintaining correct ratios of ortho and meta dimethylbenzene during bromination, then quickly separating the 4-bromo isomer before secondary bromination or side-reactions, forms the backbone of our process.

    Proper handling has kept our material free from high levels of dibrominated or polybrominated byproducts, which often plague material sourced carelessly or with inadequate reaction controls. Downstream applications, such as Suzuki cross-couplings or Grignard reagent preparation, depend heavily on such quality. Impure starting material leads not only to reduced yields but to extra headaches in purification, more time lost troubleshooting, and higher costs overall. Our familiarity with end-use requirements and feedback from research and commercial production labs feeds directly into process improvements.

    Key Properties and Model Advantages

    In the lab or at scale, 4-Bromo-1,2-Dimethylbenzene stands out for several reasons. Its melting range, solubility profile, and volatility make it well-suited to standard laboratory handling. Peers like 2-bromo-1,3-dimethylbenzene or 4-bromo-1,3-dimethylbenzene may look similar on the page, but chemical reality does not always cooperate with theory. The position of both methyl groups and the single bromo group on the benzene ring influences how the compound reacts with base, how it couples with boronic acids, and even how volatile it proves during workup. In solvent selections—whether using polar aprotic solvents, chlorinated hydrocarbons, or alcohols—we supply data and advice drawn from repeated use, not only datasheets or simulation.

    From a manufacturing point of view, the key difference between our 4-Bromo-1,2-Dimethylbenzene and more common isomers lies in feedstock selection and careful use of brominating agents. Unlike commodity xylene bromination, where selectivity takes a backseat to throughput, targeted synthesis of this isomer relies upon batch-specific quality control. Bromine source, temperature, and residence time become central. Without iterative solvent extractions and careful distillation, mixtures often drift off-target, making the separation of closely related isomers a costly challenge.

    Supporting Diverse Applications

    Our background in process chemistry shows that users select 4-Bromo-1,2-Dimethylbenzene as a flexible intermediate. In medicinal chemistry, it functions as a linchpin building block, facilitating the construction of advanced molecules with particular substitution patterns. Its predictable halogen placement makes it a favorite for palladium-catalyzed coupling reactions—key for linking aromatic rings without risking overreaction on unintended positions.

    In electronic materials and advanced polymers, chemists turn to 4-Bromo-1,2-Dimethylbenzene to introduce branching that imparts specific physical and electronic properties. The selectivity of the bromination lets designers create custom-modified monomers, leading to high-performance materials used in display technologies and sensors. Feedback from our industrial partners shows that starting with our high-purity compound trims both workup steps and overall cost, reinforcing the importance of well-selected starting materials.

    Those in flavor, fragrance, and diagnostic chemicals have also called for this compound—sometimes not for its intrinsic odor or color, but for its ability to anchor other small molecules in a sequence. We listen closely to their requests, adjusting our process where feasible and working together to refine purity specifications as uses evolve.

    Quality, Traceability, and Safety: Lessons Learned

    Quality control teams work closely with production and logistics to minimize handling losses and ensure full traceability of every outgoing drum. Inspection goes well beyond simple melting point or spectral verification. Consistency across shipments can mean the difference between a successful API synthesis and days spent troubleshooting. Every process improvement draws on feedback from both internal chemists and long-term users who push our material in tough reaction environments. This approach has led us to enhance not only our purification steps but also tracking of each batch from raw material through to shipment.

    Producing halogenated aromatics like 4-Bromo-1,2-Dimethylbenzene requires a sharp eye on safety. Our facilities operate with purpose-built extraction systems and environmental monitoring, reducing exposure risk for both workers and neighbors. Waste streams containing excess halides or organic residues get routed through dedicated recovery units, allowing us to meet regulatory standards while keeping both chemical loss and environmental footprint low. Teams receive training in the specific hazards of brominated aromatics, learning from past incidents across the industry to prevent repeats.

    For partners shipping product internationally, we have learned that minor differences in regulatory requirements—from local labeling to transport safety—can complicate logistics. Our commitment to direct oversight rather than relying on resellers helps simplify compliance and avoids costly bottlenecks once the drums leave the plant. Experience has shown that clear records and open communication can shorten delays at ports and speed up delivery to research and production sites.

    Why Source from the Manufacturer?

    Direct relationships between producer and user benefit both sides. Over years of supplying not only 4-Bromo-1,2-Dimethylbenzene but many related compounds, we have seen how users’ detailed feedback prompts improvements. By controlling our own process—starting with procurement of xylene feedstock through to final packaging—quality improvements get rolled out faster. Traders and brokers lack this level of technical exchange and may swap in off-spec product from alternate origins.

    In a few instances, customers flagged subtle performance differences in coupling yields or crystallization behavior versus similar products from bulk suppliers. Deep dives into those cases, working with user labs and our own analytics team, revealed that trace isomeric impurities—not caught by simple purity checks—undermined reaction reproducibility. Only manufacturers with regular, tight controls across their whole process can react effectively to these challenges.

    The option to adjust specifications or scale up quickly rests with those who know every detail of raw materials, intermediates, and process bottlenecks. Users faced with sudden demand spikes, new R&D directions, or regulatory changes rely on those who don’t just move boxes but understand each batch’s chemical nuances. We commit unused production capacity for specialty projects, supporting both pilot and bulk users with tailored, real-world solutions.

    Innovation Through Partnership

    Decades of close work with academic labs, pilot facilities, and multinationals have taught us the value of being nimble. Process improvements often follow a suggestion from an end-user whose challenges stretch accepted methods. 4-Bromo-1,2-Dimethylbenzene may start as a “simple” aromatic, but the ways it gets put to work keep evolving. From optimizing solvents to finding secondary uses for process side streams, we keep our doors open to technical and commercial collaboration.

    Examples from our own books include several collaborative projects where we modified downstream purification not only to increase main product yield but to recover valuable byproducts. Openly sharing analytical data—rather than hiding behind proprietary claims—lets partners understand what they are really working with. Over time, trust grows and both sides benefit. Fine-tuning such an approach leads to fewer surprises and smoother scale-ups when lab methods move to pilot or commercial volume.

    This spirit of joint problem-solving doesn’t end at our plant gate. Extended technical support—whether interpreting NMR spectra, troubleshooting a tricky coupling step, or discussing new analytical trends—remains central to our philosophy. Experience shows that open technical exchange enriches both product development and user productivity, and keeps us at the forefront of fine chemical manufacturing.

    Sustainability and Responsible Production

    Regulatory scrutiny of halogenated organics has sharpened year by year. We have been proactive in reducing emissions and chemical loss, investing in scrubbers, closed-loop solvent use, and energy recovery systems. Responsible production practices not only secure our permits but also help users demonstrate sustainable sourcing to their own downstream clients. In areas where industrial neighbors have expressed concerns about waste, we have met directly with stakeholders and refined waste handling to cut complaints and improve transparency.

    Within our facilities, energy efficiency drives both cost control and environmental performance. Heat exchangers reclaim process energy, and analytics teams monitor not just final product purity but solvent recovery and process yields. Only with in-house experience and close oversight of each stage can such efficiencies be realized and extended to specialty projects or scale-up experiments.

    For those in regulated sectors—pharmaceuticals, diagnostics, or electronics—traceability down to each bag or drum builds confidence. We support this with digital process records and on-demand access to documentation for every batch. Site visits by customers, whether planned or spot-checks, are not only welcome but regularly encouraged. Lessons from these visits regularly feed into ongoing improvements.

    Comparing Similar Compounds: Why Details Matter

    Chemists may lump together all bromo-dimethylbenzenes as similar, but we see key differences in chemical and process behavior. Our own experience with 2-bromo-1,3-dimethylbenzene, for example, highlighted less predictable substitutions during Suzuki coupling. Changing the position of substituents alters both steric hindrance and the electronic character of the aromatic ring. In 4-Bromo-1,2-Dimethylbenzene, the proximity of the two methyl groups near the bromo substituent means cross-coupling sites behave differently from their isomeric cousins. These differences show up not just in the lab but in process scale-up, influencing reaction time, byproduct formation, and overall efficiency.

    End-users often fail to see these subtleties until batches behave unpredictably at scale. Sourcing direct from a manufacturer who understands these differences and monitors each batch for them prevents frustration during production. Our labs have rerun classic procedures—just as many users will—to confirm those real-world outcomes match theoretical literature. This way, surprises fall away, and everyone moves forward with confidence.

    Continuous Improvement and Real-World Insights

    No process stays frozen. New synthetic methods, downstream technologies, and environmental expectations drive us to keep raising standards. Customer suggestions have prompted us to tighten controls on trace metal contamination, tweak drying protocols to improve shelf life, and further clarify specification sheets for end-users who write their own regulatory submissions. Through each change, transparent communication remains key.

    Our own chemists have taken part in R&D projects where small changes to 4-Bromo-1,2-Dimethylbenzene grade led to major effects downstream. From solvent water content to trace inorganic residues, many hidden factors influence how a batch performs in real usage. Shared lessons from both successes and mistakes have allowed us to minimize batch-to-batch variability and speed up method transfer for our users. Hands-on experience, not just sales brochures, has shaped how we help partners solve problems.

    The knowledge we bring—from raw material selection through to delivery and post-sales support—serves as a safeguard for customers facing rigorous audits or demanding process windows. How product is handled, packaged, and shipped makes just as big a difference as lab-scale purity numbers. Common challenges like clumping during storage or static buildup get addressed by straightforward changes to packaging and warehouse climate control, brought in after years of direct user feedback. This willingness to listen and adapt gives our products an edge.

    Listening to End-User Needs

    We place a premium on the expertise of users. Each new project, be it large or small, brings fresh insight into the practicalities of chemical synthesis. Researchers building next-generation pharmaceuticals often ask about trace impurities or physical properties not mentioned in published specifications. By opening our lab and production records, rather than sticking to minimal compliance, we enable these researchers to get the reliable outcomes their work demands.

    In the fine chemicals field, trust comes from a proven record of delivery—not promises or certificates alone. Many of our relationships stretch back decades and are built around honest exchange, not only paperwork. Failures and setbacks in the lab get relayed back to us, and we use them to plug process gaps and refine our offerings.

    Shipment flexibility matters. Scale-up projects shift requirements quickly. Because we manage our own schedules, we respond nimbly to requests for urgent deliveries, atypical pack sizes, or extra documentation. End-users work with people who know the realities of both lab and plant, not just a call center. Our process, sharpened by continuous feedback, saves time and effort at every step.

    Future Directions: Meeting Tomorrow's Challenges

    Demand for 4-Bromo-1,2-Dimethylbenzene and related aromatic halides shows no sign of slowing. New coupling strategies and greener synthetic methods have started to shape upcoming requirements, driving tighter controls not only on product purity but on waste, solvent use, and trace contaminants. Our experience overseeing both small kilo lab batches and larger plant campaigns keeps us adaptable as methods change.

    Looking forward, we have begun trials with alternative bromine sources and greener solvents to further minimize process risks and environmental load. Early results from these pilots show both sustainable improvements and lower side product formation, which translates directly into more cost-effective production and simpler downstream workups for users.

    Feedback from academic and industrial partners continues to shape our direction. We invest not only in hardware but in the training and development of our in-house technical teams. The industry moves fast, and only by remaining hands-on, transparent, and accountable can we keep meeting the rising demands for precision, safety, and partnership in the manufacture of fine chemicals like 4-Bromo-1,2-Dimethylbenzene.

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