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1-Propyl-3-Methylimidazolium Bromide

    • Product Name 1-Propyl-3-Methylimidazolium Bromide
    • Alias [PMIM]Br
    • Einecs 810-931-7
    • 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

    420392

    Product Name 1-Propyl-3-Methylimidazolium Bromide
    Cas Number 85012-41-9
    Molecular Formula C7H13BrN2
    Molecular Weight 205.10 g/mol
    Appearance White to off-white solid
    Melting Point 74-78°C
    Boiling Point Decomposes before boiling
    Solubility In Water Soluble
    Purity Typically ≥98%
    Density 1.19 g/cm3
    Storage Conditions Store at room temperature, in a tightly closed container
    Synonyms [PMIM]Br; 1-Propyl-3-methylimidazolium bromide

    As an accredited 1-Propyl-3-Methylimidazolium Bromide factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing A clear, tightly-sealed 100g amber glass bottle labeled "1-Propyl-3-Methylimidazolium Bromide," including hazard warnings, purity, and batch number.
    Shipping 1-Propyl-3-Methylimidazolium Bromide should be shipped in tightly sealed containers, protected from moisture and direct sunlight. It is typically classified as non-hazardous, but handling with care is advised. Ensure appropriate labeling in compliance with local and international shipping regulations. Store and transport at ambient temperature, avoiding strong oxidizers and incompatible materials.
    Storage Store **1-Propyl-3-Methylimidazolium Bromide** in a tightly sealed container, in a cool, dry, and well-ventilated area. Protect from moisture and direct sunlight. Keep away from incompatible substances such as strong oxidizing agents. Store under nitrogen or inert gas if recommended. Always follow standard chemical hygiene and safety protocols, including using appropriate personal protective equipment when handling and storing this compound.
    Application of 1-Propyl-3-Methylimidazolium Bromide

    Applications of 1-Propyl-3-Methylimidazolium Bromide in Industrial Manufacturing

    As a specialized producer of 1-Propyl-3-Methylimidazolium Bromide, we supply this ionic liquid to enable advanced processes in select industrial sectors. The following application fields reflect proven integrations by downstream manufacturers seeking enhanced solubility, selectivity, or process efficiency in regulated environments.

    1. Cellulose Dissolution and Shaping for Specialty Fiber Production

    Downstream cellulose processors employ 1-Propyl-3-Methylimidazolium Bromide as a direct solvent in fiber spinning and film casting operations. This ionic liquid disrupts the hydrogen bonding network of cellulose at controlled temperatures, allowing for homogeneous solubilization of dissolving pulps without derivatization. The resulting solutions support the extrusion of regenerated cellulose fibers or flat films with improved mechanical properties and uniformity compared to traditional viscose or NMMO processes. Water or alcohol antisolvent precipitation recovers the shaped product, while efficient recycling of the medium is practiced to minimize solvent loss.

    Industry compliance standards

    • ISO 9001:2015 for fiber and film manufacturing quality
    • OEKO-TEX Standard 100—chemical use control for textiles
    • European REACH Regulation—registration of solvent components for industrial use
    • ZDHC Manufacturing Restricted Substances List

    Typical usage ratio

    • Cellulose:solvent mass ratio of 1:10 to 1:15
    • Solubility and viscosity adjusted by adding 5–20% water as co-solvent if required

    Downstream process integration

    • Dissolves pretreated cellulose pulps in mixing reactors at 80–120°C
    • Feeds direct to spinneret or casting dies for shaping
    • Coagulation bath recovers fibers or films and enables initial solvent-water separation
    • Solvent is recycled via evaporation and purification units

    Final product types

    • Lyocell and specialty continuous staple fibers
    • Cellulose-based nonwoven fabrics
    • Transparent and flexible cellulose films for packaging
    • Laboratory model membranes for filtration development

    2. Electrochemical Device Electrolytes

    Manufacturers of electrochemical capacitors and advanced batteries formulate electrolyte blends using this ionic liquid as a high-stability, non-volatile medium. Its intrinsic ionic conductivity and wide electrochemical window enable safe operation of capacitors and prototype lithium-free batteries at elevated temperatures. For supercapacitor assembly, the ionic liquid replaces organic solvents to improve cycle life and energy density. In research-scale battery manufacturing, it provides a platform to study new electrode chemistries not compatible with conventional electrolytes.

    Industry compliance standards

    • IEC 62660-2 safety requirements for cells installed in industrial applications
    • UN Manual of Tests and Criteria Part III, Section 38.3 for transport of cells
    • RoHS Directive (2011/65/EU) for hazardous substance limitation
    • Internal QC protocols for electrical grade materials

    Typical usage ratio

    • 10–40% by weight in the total electrolyte blend
    • Concentration adjusted according to device operating voltage and expected cycle life

    Downstream process integration

    • Premixed with other ionic liquids or salts to reach target conductivity
    • Injected in dry room environments during cell case filling
    • Residual moisture strictly controlled to below 20–50 ppm
    • Final drying and sealing under inert atmosphere prior to device closure

    Final product types

    • Electric double-layer capacitors (EDLCs)
    • High-power hybrid capacitors
    • Pilot-scale non-lithium rechargeable cell prototypes
    • Electrochemical research devices for laboratory use

    3. Organic Synthesis—Halide-Driven Catalysis and Phase Transfer Processes

    Fine chemical and pharmaceutical manufacturers integrate this ionic liquid as a dual-function Phase Transfer Catalyst (PTC) and solvent medium in halide-associated nucleophilic substitution reactions. The bromide anion contributes to enhanced reactivity in SN2 and alkylation steps by facilitating intermediate formation. Custom process optimization leverages the low vapor pressure and strong solvent power of the compound, reducing reliance on volatile organic solvents. Careful feed proportioning balances catalytic efficacy with downstream separation requirements.

    Industry compliance standards

    • GMP guidelines for active pharmaceutical ingredient (API) synthesis
    • ICH Q7 recommendations for solvent handling and residual limits
    • 21 CFR Part 211 (FDA)—pharmaceutical production quality assurance
    • European Pharmacopoeia Monographs, excipient grade when relevant

    Typical usage ratio

    • 0.5–5 mol% catalyst relative to substrate
    • As bulk solvent: substrate-to-solvent weight ratio typically 1:3 to 1:5, based on product solubility

    Downstream process integration

    • Added at the initial reaction charge along with substrates
    • Facilitates phase transfer between aqueous and organic layers
    • Reaction run at 60–100°C to achieve full conversion
    • Recovery steps incorporate selective extraction and ionic liquid recycle

    Final product types

    • Active intermediates for pharmaceutical manufacturing
    • Specialty halide fine chemicals
    • Agrochemical precursors
    • Performance additives for polymer industries

    4. Analytical Extraction and Separation in Research and Quality Control

    Analytical laboratories specializing in trace organic pollutant testing and pharmaceutical impurity profiling utilize this ionic liquid as an extractant and separation medium. The compound’s selective solubility parameters support solid-phase extraction (SPE) and dispersive liquid–liquid microextraction (DLLME) workflows. Laboratories achieve lower detection limits for target analytes by leveraging the ionic liquid’s partitioning behavior and compatibility with chromatographic techniques, especially for polar and halide-containing substances.

    Industry compliance standards

    • ISO/IEC 17025 laboratory accreditation for testing and calibration
    • USP General Chapter <561> for pharmaceutical impurity analysis
    • EPA Method 8270D compliance for organic compound testing in environmental matrices
    • Good Laboratory Practice (GLP), OECD Principles

    Typical usage ratio

    • Dispersive extraction: 50–200 μL ionic liquid per 10 mL sample solution
    • Solid-phase extraction: beds impregnated with 1–5% total ionic liquid content

    Downstream process integration

    • Direct addition as extractant in pre-filtration sample prep
    • Compatibility with LC-MS, GC-MS, and HPLC post-extraction workflows
    • Used for partitioning prior to phase separation or clean-up steps
    • Regeneration of extraction phase via back-extraction or thermal stripping

    Final product types

    • Analytical standards and reference solutions
    • Purified pharmaceutical samples for regulatory submission
    • Certified water and soil test reports
    • Custom-prepared chromatography cartridges for market sale
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    Certification & Compliance
    More Introduction

    1-Propyl-3-Methylimidazolium Bromide from a Manufacturer’s Point of View

    Real-World Experience in Ionic Liquid Production

    Making specialty chemicals means looking past the surface specs and thinking about everything that happens from first batch to final application. As a team with over two decades in synthetic chemistry and process improvement, we take this view with our 1-Propyl-3-Methylimidazolium Bromide. Ionic liquids like this don’t just fill a spot in a catalog—they answer the real challenges chemists face when solvents, catalysts, or material compatibility issues crop up on research benches or in pilot plants.

    Understanding the Difference: More Than a Simple Salt

    Not all imidazolium salts work the same on the bench. Several common ones, such as 1-butyl-3-methylimidazolium chloride or hexafluorophosphate analogs, show different behaviors in thermal stability, viscosity, hydrophilicity, and chemical compatibility. From years of partnering directly with research labs and manufacturing teams, we see demand for 1-Propyl-3-Methylimidazolium Bromide grow whenever someone hits a wall using the more basic imidazolium chlorides, especially because bromide comes with unique physical and handling advantages: moderate hydrophilicity, lower melting temperature, and slightly higher freedom for organic transformations where the anion shouldn’t interfere.

    Over the years, we have addressed queries from customers substituting this ionic liquid in place of others for applications like phase-transfer catalysis, extraction, and electrodeposition. The difference is often more than just switching the cation alkyl chain or swapping out the halide. Bromide imparts a milder nucleophilicity and, compared to chloride, usually results in a less corrosive environment for equipment. Our production line keeps this in mind, especially for pilot and scale-up projects that can’t afford downtime or metal compatibility issues.

    Specifications Guided by Practical Needs

    Laboratory-grade chemicals should be defined by more than number on a certificate. We run our batches to tight purities, but purity targets alone don’t capture the requirements of chemists tracing troublesome background peaks or working to validate their process before scale-up. Over many batches, we’ve learned that moisture and halide impurities affect yield or cause side reactions, so our dryer protocols and final screening target ultra-low water and minimal residual halide. This controls hydrolysis and maintains the ionic liquid’s integrity for sensitive uses, like organometallic catalysis and advanced extraction systems.

    We provide 1-propyl-3-methylimidazolium bromide in crystalline and liquid forms. There are subtle differences in melting points and crystallization kinetics, depending on cooling and storage conditions. That’s not trivial. When researchers want to replicate results or transfer projects from the bench to the pilot, we put effort into consistency—not just in chemical composition, but also in physical handling properties. Moisture pickup, clumping, or color shifts get tracked, and we share this history with our repeat customers, who rely on process transparency and batch-level documentation for scale-up.

    Applications in the Lab and Beyond

    We follow the science and talk to users across sectors—academic, energy, fine chemical and electrochemical production—so we know how single-molecule differences shape performance. 1-Propyl-3-methylimidazolium bromide isn’t just a curiosity. Its profile allows it to step into tasks where standard alkylimidazolium salts show weaknesses:

    Comparing Manufacturing Concerns to End-User Goals

    Deciding which ionic liquid to use shouldn’t just involve price, or an overdependence on lab results from one published paper. Through real production, you learn that lab-scale tolerance doesn’t always hold at 50 liters, or under the stresses of day-long runs and cyclic conditions. Over time, we learned users encounter unexpected batch-to-batch differences from traders or resellers. Many of these come from storage issues, handling errors, or cuts with cheaper analogs. Makers who know their process track every step from raw material sourcing through packaging. With 1-propyl-3-methylimidazolium bromide, this means consistent drying, controlled crystallization, and real COA documentation for each batch—not generic printouts.

    Because we supply directly and maintain long-term relationships with most of our industrial and R&D customers, shipping requests, logistics, and after-sale feedback often circle right back to production planning. We know that some users have adopted tighter acceptance specs on moisture and trace inorganic counts, so we keep flexibility in the line for additional purification or custom packaging when needed. This isn’t a service you get buying from anonymous brokers. It’s a feedback loop—customers alert us if a batch clumps or gives an off-odor under storage, and in every case so far, root-cause analysis traced either to raw material drift or atmospheric pickup during transit. That’s why we batch-sample, run checks for decomposition at ambient and slightly elevated temperature, and use double-sealed vessels for batch aging checks.

    What Separates 1-Propyl-3-Methylimidazolium Bromide from Similar Salts

    Chemically, the biggest distinctions come from the alkyl chain and the anion. Compared to the widely used 1-butyl-3-methylimidazolium cation, the propyl means slightly lower viscosity and often lower melting point—making some procedures easier to handle at modest temperatures, or more compatible with automated dosing equipment. In real process operations, even a 5-degree difference in melting point means avoiding extra heating steps, so you save on energy costs and time for analytical validation.

    On the anion side, bromide offers a useful mix of nucleophilicity and non-coordinating character, compared to PF6 or BF4 salts. This changes outcomes in metal-catalyzed reactions and limits side products that arise from fluoride hydrolysis. Some users try PF6 at first, but run into stability issues under wet conditions. We keep the bromide line separate, avoiding cross-contamination with fluorinated acids or reactive halides, because in scale-up a trace contaminant can sour an entire run.

    Quality Oversight and Regulatory Mindset

    As a chemical manufacturer, every shipment of 1-Propyl-3-Methylimidazolium Bromide gets tracked for compliance and quality control, not as an afterthought but as a built-in process. Certifications and batch release protocols follow EU REACH and OSHA guidelines. Meanwhile, we record in-process controls during synthesis, crystallization, and packaging. Feedback loops trace through every delivery—if a research group flags an impurity, QA traces back to raw material. Industrial projects mean higher stakes: any missed impurity or under-dried shipment at 20+ kilogram scale sends ripples down a production line. That's why direct manufacturing oversight—rather than reliance on third-party brokers—keeps end users informed and problems traceable.

    Our on-site analytical team runs every batch using NMR, water titration, and elemental analysis to keep specs tight. We conduct regular revalidation with cross-lab samples, especially for customers with in-house analytical chemists who demand reproducibility. Problems or process drifts get flagged fast, and there’s always a feedback line open from customer site to our chemists. This supports safety, performance, and compliance, which matter far more in the real world than in a simple catalog listing.

    Sustainability and the Path Forward

    The world’s chemical needs shift as regulations tighten and industry asks for better, safer, and longer-lasting solvents. Ionic liquids in general keep getting more interest for their low volatility, thermal stability, and custom-tailorable properties. 1-Propyl-3-Methylimidazolium Bromide steps in as a drop-in improvement over less-stable or more hazardous alternatives (especially when compared to volatile organics or more reactive halide salts) thanks to its relatively benign toxicity profile and minimized vapor phase emissions. In our hands, continuous improvements in solvent recovery and waste reduction mean that we now routinely reprocess off-spec streams and contain process water so nearly everything running through our reactors ends up as product, not landfill.

    Lab-scale and commercial customers want to know about materials sourcing and downstream effects. We source our starting materials transparently and provide documentation on request—no secret blends or unknown co-products. Waste streams from 1-propyl-3-methylimidazolium bromide production leave as categorized byproducts to regulated handlers, not as undifferentiated waste.

    Process chemists who swap in this ionic liquid instead of traditional, more dangerous organic media often tell us about improved safety: no flashpoint, no long-term inhalation hazards, better environmental fate, and reduced operator exposure incidents. In multistep syntheses, reduced exposure to volatile organic compounds and less dusting or spill risk make a difference—not just for lab staff, but for factory operators working long shifts in all seasons.

    Looking Beyond the Catalog Listing

    We aim to demystify the role of 1-propyl-3-methylimidazolium bromide and make it more than another line item in a catalog. Customers turn to us not just for the product, but for best-practice recommendations on handling, storage, and integration. Together, we've solved cold-flow issues by developing improved insulation on drums; we've kept moisture out by sending extra desiccant with every drum; and we've worked side-by-side with development labs scaling up from gram to multi-kilogram projects, providing advice on dissolution strategies or identifying rapid quality checks to keep projects moving.

    As the market for ionic liquids expands, we see greater variety in requests—some labs want custom ratios or blends; others need guaranteed trace impurity levels for analytical work; industrial customers want intermediate formats for automated dispensing systems. Because we synthesize and pack in-house, our response is personal: changes can be on the next batch, not a month down the road. That matters for teams dealing with fast-moving projects where time, consistency, and transparency underpin every experiment or batch.

    The Manufacturer’s Difference: Context, Consistency, and Direct Support

    Years of direct manufacturing experience shape how we produce and supply chemicals for modern needs. Each specification isn’t just a checkbox; it’s a reflection of conversations with researchers who push boundaries, engineers who troubleshoot problems, and regulatory teams who keep operations compliant and safe. 1-Propyl-3-Methylimidazolium Bromide stands out because it's built on dialogue between maker and user, without ambiguity, gaps, or cut corners. We focus on process transparency, consistency, and rapid feedback—elements that shape every batch we ship.

    For teams working with specialty chemicals every detail matters. Supply line reliability, material consistency, and hands-on support can turn a struggling project into a success. With 1-propyl-3-methylimidazolium bromide and other specialty ionic liquids, our goal is to provide not just product, but partnership—real support from seasoned chemists who value honest feedback, quick troubleshooting, and lasting collaboration.

    Real Problems, Real Solutions

    Working directly with customers, we’ve seen the headaches caused by swapped-out grades and shipped-from-storeroom surprises. It’s not about chasing record-breaking purity or offering the absolute lowest price. Instead, it's about providing what labs and manufacturing lines actually need—a 1-propyl-3-methylimidazolium bromide that doesn’t surprise or disrupt carefully developed methods. We follow our batches as they travel and check in often. We have tackled issues ranging from moisture ingress to caked materials in drum storage by changing our sealing protocols and packaging designs. In every case, lessons improved both our product and the user’s outcomes.

    A direct line between maker and customer means fewer surprises and better solutions when problems surface. Technical consultation isn’t outsourced—it comes from the chemists who made the batch. Whether it's troubleshooting crystallization or helping develop handling procedures for new equipment, it’s easier to get it right by working together.

    Support for New and Experienced Users

    For first-time users of 1-propyl-3-methylimidazolium bromide, handling advice, recommendations for storage, and troubleshooting protocols are available directly. Customers with specific projects—especially in green chemistry, advanced energy storage, or materials synthesis—find that direct support shortens the learning curve. Keeping the line open for conversation means that when someone in a distant R&D lab hits a snag, help comes from those who made the batch, not from a call center reading a script.

    Experienced researchers benefit from transparent batch documentation, supporting paperwork, and real-time communication if anomalies appear. We supply sample COAs and batch chromatograms, and frequently collect data on in-use performance, so users get the full picture of what sits in their vessels—not just an abstract product description. Over time, these two-way exchanges have pushed us to improve every aspect of manufacturing, packaging, and delivery.

    Innovation and Long-Term Commitment

    Our focus isn’t just on large, established markets, but also on supporting emerging areas such as green chemistry, electrode research, and advanced separations. In each area, we see that end users expect more from a supplier—a true partnership with those who know the chemistry and the operational realities. We continue to test new purification routes, better impurity retention protocols, and smarter, more sustainable packaging, all driven by direct user input.

    1-propyl-3-methylimidazolium bromide is more than a chemical; it symbolizes a commitment to moving research forward without compromise. By sticking with direct manufacturing, hands-on support, and honest feedback, we aim to provide a safe, stable, and high-performing product, ready for the next challenge in any lab or plant.

    Working with Us: The Right Chemical, the Right Way

    As chemical manufacturing evolves, we remain committed to staying agile and responsive, tuning the entire production chain—from material sourcing, through synthesis, to the very drum that arrives on your dock. Each batch of 1-propyl-3-methylimidazolium bromide tells a story of direct oversight and conversations with real-world users. Our continued partnership with customers—industrial and academic—means every new requirement translates into improvements, not just in chemistry, but in safety, sustainability, reliability, and trust.

    We invite our partners to keep challenging us, because your toughest problems—from new synthesis demands to equipment compatibility questions—drive how we create, support, and supply every batch. That’s the difference a true manufacturer brings to specialty chemicals, and what keeps 1-propyl-3-methylimidazolium bromide a reliable tool in research and production worldwide.