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Chloromethyltrimethylsilane

    • Product Name Chloromethyltrimethylsilane
    • Alias CMTMS
    • Einecs 214-690-6
    • 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

    471546

    Chemicalname Chloromethyltrimethylsilane
    Casnumber 592-27-8
    Molecularformula C4H11ClSi
    Molecularweight 122.67
    Appearance Colorless liquid
    Boilingpoint 92-93°C
    Density 0.876 g/mL at 25°C
    Refractiveindex 1.414-1.416
    Meltingpoint -61°C
    Flashpoint 10°C (closed cup)
    Solubility Decomposes in water
    Vaporpressure 67 hPa at 20°C

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

    Packing & Storage
    Packing Chloromethyltrimethylsilane is packaged in a 500 mL amber glass bottle with a secure cap and hazardous chemical labeling.
    Shipping Chloromethyltrimethylsilane should be shipped in tightly sealed containers under dry, cool conditions, and protected from moisture and sources of ignition. It is classified as a flammable and corrosive liquid, requiring proper labeling and handling according to hazardous materials regulations. Transport must comply with local, national, and international chemical shipping standards.
    Storage Chloromethyltrimethylsilane should be stored in a cool, dry, well-ventilated area, away from moisture and incompatible substances such as strong oxidizers, acids, and bases. Keep the container tightly closed and clearly labeled. Store it in a corrosive-resistant, preferably flammable-proof cabinet. Protect from sources of ignition, and avoid contact with air to prevent hydrolysis and the release of toxic gases.
    Application of Chloromethyltrimethylsilane

    Applications of Chloromethyltrimethylsilane in Industrial Manufacturing

    Chloromethyltrimethylsilane plays a strategic function across multiple chemical industry sectors, owing to its role as a vital chloromethylating and silylating agent. Below we outline specific downstream manufacturing arenas where direct and large-scale application aligns precisely with industrial compliance, formulation standards, and well-established production workflows.

    1. Synthesis of Pharmaceutical Intermediates

    Our material is primarily adopted by API facilities for the protection of active intermediates during multi-stage drug synthesis, especially as a silylating agent for hydroxyl group masking. Pharmaceutical processors use this chemical for sensitive substitution and condensation steps, minimizing side reactions and streamlining high-yielding, scalable campaigns in both small molecule and advanced intermediate manufacture.

    Industry compliance standards

    • Current Good Manufacturing Practice (cGMP) as defined by US FDA 21 CFR Parts 210/211
    • ICH Q7: Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • EU EudraLex Vol. 4 — GMP Guidelines
    • Relevant pharmacopoeias (USP, EP, JP) specifications for residual solvents and reagents

    Typical usage ratio

    • 0.7–1.2 molar equivalents relative to substrate hydroxyl groups, adjusted based on target protection

    Downstream process integration

    • Introduced after initial deprotection or reduction, before base/acid workup in multi-step kilo lab and pilot-scale reactors under inert atmosphere

    Final product types

    • Protected API intermediates (e.g., silyl ethers in cephalosporin and statin synthesis)
    • Specialty reagents for solid-phase peptide synthesis
    • Chloromethylated heterocycles for later coupling

    2. Surface Treatment in Electronic Grade Silanization

    Semiconductor fabrication lines specify this molecule for hydrophobic surface modification of glass, silicon wafers, and quartz, optimizing resist adhesion and controlling surface energy in photolithography. The predictable reactivity with silanol groups creates a permanent, uniform passivation layer essential for microelectronics yield and device reliability, particularly in MEMS and advanced IC processing.

    Industry compliance standards

    • SEMI F57 — Specification for Polymer Materials of Construction and Qualification (for wet processing applications)
    • JEDEC JESD22-A113 for IC process materials
    • IEC 61340-5-1 ESD Protected Area design and process controls
    • RoHS Directive (2011/65/EU) for electronic hardware

    Typical usage ratio

    • 1–10 vol% in anhydrous organic carrier solvents; concentration set via batch testing for monolayer formation and prevention of multilayer defects

    Downstream process integration

    • Applied by spin-coating, vapor-phase deposition, or solution-phase dip in cleanroom environments after substrate cleaning and plasma activation

    Final product types

    • Photomask components with organosilicon passivation
    • Integrated circuit wafers with modified dielectric surfaces
    • Sensor substrates and low-k dielectrics for the semiconductor supply chain

    3. Silylation in Industrial Analytical Derivatization

    This compound serves central laboratories as an analytical derivatization reagent for the conversion of polar metabolites, environmental contaminants, and food extractives into stable, volatile derivatives prior to GC-MS quantification. Laboratories rely on its sharp reactivity for routine silylation workflows, ensuring cleaner chromatographic baselines and higher reproducibility of quantitation in regulated environments.

    Industry compliance standards

    • ISO 17025:2017 — General requirements for the competence of testing and calibration laboratories
    • EPA SW-846 methods for hazardous waste analysis
    • EN 15662/EN 12393 for food residue analysis (GC/MS, GC/ECD)
    • FDA 21 CFR 58 Good Laboratory Practice for Nonclinical Laboratories

    Typical usage ratio

    • 1–3 equivalents relative to reactive functional groups on sample analytes; adjusted based on matrix complexity and targeted quantitation limits

    Downstream process integration

    • Mixed with sample extracts post-evaporation step; reaction carried out at 50–70°C for up to 30 min in vials or microplate wells directly preceding GC injection

    Final product types

    • Silylated derivates of carbohydrates, amino acids, pesticides, and pollutants for trace analytical reporting
    • Reference standards for laboratory quality control and method validation

    4. Crosslinking Agent in Silicone Resin Manufacturing

    Downstream silicone resin plants dose this material as a crosslinking and functionalizing additive in the production of heat-stable and chemical-resistant resins. Its controlled introduction at the polymerization stage enables precise backbone modification, leading to improved mechanical properties and processability, especially in applications requiring tailored hydrophobicity and chemical resistance for coatings and molded parts.

    Industry compliance standards

    • ISO 9001:2015 for quality management in specialty chemicals
    • ASTM D1613 for acidity standards in organosilicon products
    • REACH Regulation (EC) No 1907/2006
    • UL 94 Flammability Test for finished silicone compounds

    Typical usage ratio

    • 0.2–1.0 wt% in condensation or addition-cure silicone formulations, with precise dosage titrated based on resin structure, target crosslinking density, and final part specifications

    Downstream process integration

    • Metered into the reactor during controlled resin cook phase, after catalyst charge but before chain extension or filler incorporation

    Final product types

    • Chemical-resistant silicone coatings for industrial and architectural substrates
    • Molded silicone electrical insulators and cable accessories
    • Heat-cured silicone adhesive systems
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    Certification & Compliance
    More Introduction

    Chloromethyltrimethylsilane: A Closer Look from the Factory Floor

    Our Experience with Production and Quality

    Decades of real manufacturing teach that chloromethyltrimethylsilane isn’t just a specialty silane—it’s a backbone in a thin slice of chemical transformations. At our facility, the process begins with rigid control over starting materials for C4H11ClSi, keeping impurities in check from the very first reaction. The clear, colorless liquid we bottle carries a sharp scent and a reputation for reactivity. Each lot we run faces the same scrutiny: GC purity, moisture analysis, and residual silanol tests exceed 99% specificity. The bottling line doesn’t move unless the batch meets all our specs for purity and trace reactivity; this isn’t paper-pushing—it’s engrained habit because downstream yield depends on us.

    Water can spell disaster for a shipment, even in-minute traces above 100 ppm, so our plant runs with a moisture-controlled nitrogen blanket throughout handling. Silanes don’t forgive shortcuts. We drill this point into our team, testing closed valves, double-sealing every flange, because even a brief lapse can spike hydrolysis by-products and sideline a whole batch. This kind of discipline isn’t obvious on a spec sheet, but it’s why our shipments reach R&D chemists and process teams with the quality bar set where it should be.

    Why Customers Rely on Chloromethyltrimethylsilane

    The requests for chloromethyltrimethylsilane that fill our order queue never arrive from one type of chemist. Some use it for functionalizing resins or chromatographic supports; others feed it into pharmaceutical pipelines. In cross-coupling protocols, a clean chloromethyltrimethylsilane allows for gentle, smooth displacement. Many customers prep their own silanized supports with our material, appreciating a batch-to-batch consistency that never surprises them with odd by-products or off-spec residues.

    We field plenty of questions about storage and shipping. Years of experience confirm this compound remains stable in high-density polyethylene drums kept bone-dry and away from light. Quick transfer times and thoroughly purged lines keep its sharpness. Our own process lines never re-use tubing or pumps where this molecule moves. Clogging and degradation are solved before they become issues, saving clients both time and trouble when they run their own complex reactions.

    Comparing with Other Alkylsilanes and Chlorosilanes

    Anyone who’s worked in a bench chemistry lab sees a whole range of silylating agents. Chloromethyltrimethylsilane stands out for its particular methylene group joined to the silicon, making it unique among the short-chain crowd. Most common trimethylchlorosilanes (TMCS) lack the extra chloromethyl arm; that simple unit brings a different reactivity, opening up crosslinking, protection, or attachment pathways unavailable to TMCS. The main difference lies in site-selectivity and functional group tolerance: TMCS speeds through generic silylation, but chloromethyltrimethylsilane lets you build linkers that hold up under harsher conditions.

    Compared to dimethylchlorosilane derivatives, the trimethyl backbone offers stronger hydrophobicity, blocking water more efficiently and pushing condensation reactions in organic solvents. Methyltrichlorosilane, for example, hydrolyzes in seconds at room temperature and releases clouds of HCl. Chloromethyltrimethylsilane acts less violently and is far easier to moderate in one-pot syntheses. Process teams report greater reliability and fewer surprises in workups, especially when scaling from flask to pilot reactors.

    Understanding the Chemical’s Industrial Role

    Ask old-timers on our synthesis floor how often this reagent leaves the factory, and you’ll hear stories of orders for semiconductors and medical intermediates in the same week. Its reactivity strikes a balance: enough punch to introduce a chloromethyl group into delicate frameworks, not so unpredictable that plant-scale equipment or human health is threatened by volatility. Years ago, we collaborated closely with a polyimide film manufacturer developing new dielectric layers. They needed the chloromethyl reactivity but couldn’t tolerate wild side products; we adapted our line purification stages, squeezing down the residual post-reaction contaminants to the manufacturer’s satisfaction. This hands-on work fostered a real partnership and drove iterative improvements in how we distill, sample, and qualify every batch.

    On the medicine side, chloromethyltrimethylsilane delivers in protecting fragile alcohol groups during multi-step syntheses. Its selective reactivity in silyl ether formation outpaces harsher chlorosilanes, giving medicinal chemists longer windows to build complex APIs. The same story runs through our feedback files: reliability on paper only matters when it matches the outcome at the bench. That’s a point only someone managing hot reactors and scaling drums day after day comes to value.

    Sustainability, Safety, and Future Challenges

    Few modern chemicals draw so much scrutiny on safe handling as silanes containing both a halide and alkyl group. Over the years, we’ve worked with environmental and safety specialists to overhaul our process controls. Airlocks and double-sealed transfer pumps became standard practice. We manage all waste in sealed vessels, neutralizing HCl evolution before wastewater leaves the unit. We fit every loading bay with real-time VOC monitors; not once have we waited for an inspection to highlight air quality. Our history includes a learning curve, but those changes support long-term staff retention and neighborhood trust in our operation.

    On the packing front, we moved away from small glass ampoules, favoring steel-cased drums for bulk orders. This change dropped breakage incidents and improved peace of mind for transport companies carrying our product cross-country. Each shipment exits on a custom-fitted pallet; even a small leak or breach triggers a full investigation. Training every pack-out operator on chemical reactivity and exposure controls pays off, and we keep a detailed chain of custody for every drum, down to the minute it lands on a truck or in a freight container.

    Addressing Market and Regulatory Pressures

    Across the last decade, regulatory shifts shaped our policies. High-profile recalls and news coverage strengthened customer calls for transparency. After a deep-dive audit, we expanded our batch-tracing platform, logging every analytical test from start to finish. Today, synthetic chemists or procurement officers can review origin, spec ranges, and test notes on any order. The drive for better stewardship doesn’t only arrive through external laws—it’s what we see succeeding commercially. Buyers return to manufacturers who own their processes from raw feedstock to sealed drum. As one R&D director at a multinational phrased it: predictable results and documentary evidence matter as much as stated purity, because those save headaches once regulatory submissions loom.

    This pressure continues to push for more efficient, lower-waste operations. A recent overhaul cut water and solvent volumes in our work-up sequence, and we identified recycling streams for vent gases previously flared off. These changes didn’t appear on website tabs or in brochure language, but our partners see the impact every quarter: fewer drum returns, less remediation paperwork, lower total cost of ownership.

    Supporting R&D and Innovation

    Being a self-contained manufacturer means we support custom blends and tailored specifications. Pharmaceutical and adhesive clients sometimes request tighter tonality on residuals. To accommodate this, we’ve opened up our process windows, running extra vacuum distillations or tweaking column media for clean separation. Our lab team often bumps against the edge of the art, troubleshooting the substrate sensitivity or developing new drying routines for a more exacting client. Solutions often involve more than a new catalyst or apparatus. Years of process notes and operator observations end up making the difference—like knowing when the resin batch forms a milky haze or how a subtle odor points to trace contamination. We keep our doors open for questions from customers scaling up or running feasibility trials, and our team often sends real samples, not a glossy spec sheet in response. That hands-on approach forms a link few distributors can replicate.

    Learning from Challenges and Failures

    Failure doesn’t scare us; complacency does. We’ve seen whole tote tanks rendered unsalvageable by a leaking valve left unmonitored on a humid day, converting valuable product to waste overnight. We’ve solved contamination by investing in closed-loop automation and shifting to inert transfer lines. Those invested dollars come back many-fold in quality and peace of mind for customers using our product in exacting end-uses. Lab-scale blunders or packaging snafus lead us to more rigorous final QA before the drums leave our loading bays. It’s not theory for us; it’s the lived experience on every shift.

    We’ve worked closely with suppliers to reduce batch-to-batch variation in starting materials. Upstream QCs, extra supplier audits, and focus on storage have nearly eliminated the sudden blips in purity or by-product profiles we used to see. On rare occasions when an order doesn’t match expectations, we document, investigate, and share findings with clients—usually with a replacement shipment standing by before the paperwork reaches their inbox.

    Perspectives on Global Supply and Demand

    Rising demand in Asia-Pacific for fine chemicals pushes us to run longer campaigns and rethink inventory strategy. As downstream processors for electronics or pharma expand capacity, we see ripple effects in raw material prices, logistics, and shipping lead times. One season, we watched a sudden surge in orders spike prices for a key precursor, leading to a six-month scramble for workable supply contracts. Our lesson: build longer relationships and diversify upstream sources to buffer against market swings. Export controls in certain regions added an extra layer of complexity on chemical inspections, so we retrained our shipping crews on changing import/export paperwork, reducing customs backlogs we encountered in prior years.

    We still field technical calls from labs in Europe or North America launching pilot projects. Researchers often appreciate the deeper operational knowledge on how chloromethyltrimethylsilane interacts with less common solvents, or in long-duration runs. A good manufacturer won’t just fill an order; we see the application through, troubleshooting hiccups that might otherwise go undetected until the customer sits with unexpected reaction profiles.

    The Human Side of Manufacturing

    Making chloromethyltrimethylsilane isn’t only about the finished product. It’s hundreds of work hours spent calibrating, cleaning, retesting, and confirming safety at every stage. Our lead foremen drill newcomers on the perils of complacency near reactive silanes. Long-timers know the pings and sounds of a smooth reaction sequence or the telltale odor that means a drum needs closer inspection. The process teaches lessons about discipline, precision, and respect for ever-changing chemistry.

    The factory floor’s rhythm shifts with each production cycle: the quiet moments during distillation, the clatter when drums roll out for shipping, the focus sharpening during startup and shutdown. These routines form the real base for consistency batch after batch; we don’t gamble on luck. Seldom do product descriptions show the days lost to a tricky column run or the pride when a client returns to say their own yields rose after switching to our material. For us, the real badge of honor shows in those steady repeat orders, not awards or scripted testimonials.

    Looking Ahead: Commitment and Change

    The drive for safer, more selective, and more robust silanes continues. We collaborate with academic groups and process chemists, looking for milder, less toxic alternatives for some applications. Our team monitors literature and regulatory updates regularly; sometimes, the next improvement will arise from a small tweak—a less aggressive catalyst, a smarter purification loop, a different grade of drum liner. We know that regulations and customer expectations for chemical safety will keep evolving. Our operations improve because we’re invested, not only in compliance but in reputation and shared progress for everyone handling these chemicals down the line.

    Efforts to green up the supply chain move steadily forward. We track solvent recovery metrics, energy use, and waste streams for every batch. Team members suggest process tweaks, and management listens. Changes that support environmental targets may not make flashy headlines, but the impact unfolds month by month in leaner waste disposal fees or simpler compliance audits. The goal is always a safe, steady, and reliable flow of product meeting the real-life needs of a global research base—without losing sight of the hands and minds behind that production.

    What Sets Us Apart

    Plenty of suppliers can offer a drum of chloromethyltrimethylsilane, but fewer can recount the journey from raw chemical to finished, drum-sealed product, fielding every technical question that arises along the way. Years on the manufacturing floor taught us how to spot trouble before it lands in a final batch. This kind of hard-earned experience gets poured into each lot we produce—minimizing risks, maximizing purity, and ensuring that our product delivers in demanding syntheses, whether in a new lab’s exploratory run or a process plant’s established line.