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Ethyldichlorosilane

    • Product Name Ethyldichlorosilane
    • Alias Dichloroethylsilane
    • Einecs 203-852-3
    • 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
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    Specifications

    HS Code

    933691

    Iupac Name Ethyl(dichloro)silane
    Cas Number 115-21-9
    Molecular Formula C2H6Cl2Si
    Molar Mass 147.06 g/mol
    Appearance Colorless liquid
    Density 1.104 g/cm³
    Boiling Point 89-91 °C
    Melting Point -115 °C
    Solubility In Water Reacts with water
    Flash Point 4 °C
    Vapor Pressure 41 mmHg (20 °C)
    Refractive Index 1.424
    Odor Irritating

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

    Packing & Storage
    Packing Ethyldichlorosilane, 500 mL, is packaged in a sealed amber glass bottle with a tamper-evident cap and hazard labeling.
    Shipping Ethyldichlorosilane should be shipped in tightly sealed containers under inert atmosphere, such as nitrogen, to prevent moisture contact. It is classified as a hazardous material and must be labeled accordingly. Transport should comply with international regulations (UN 1194), using corrosion-resistant packaging and secondary containment to ensure safety during transit.
    Storage Ethyldichlorosilane should be stored in a tightly closed, corrosion-resistant container in a cool, dry, and well-ventilated area, away from moisture, water, and incompatible substances such as strong oxidizers. Protect the container from physical damage and keep it away from sources of ignition and direct sunlight. Storage in a flammable liquids cabinet or designated chemical storage area is recommended.
    Application of Ethyldichlorosilane

    Applications of Ethyldichlorosilane in Industrial Manufacturing

    Ethyldichlorosilane supports high-value chemical processes across advanced industries. As a direct silicon-based intermediate, it enables controlled synthesis in electronic materials, silicones, and specialty coatings. Below, we detail its core industrial applications with specific compliance, usage, process, and finished product information.

    1. Electronic-Grade Silicon Precursor for Semiconductor Manufacturing

    In the semiconductor industry, ethyldichlorosilane functions as a chlorosilane precursor for the chemical vapor deposition (CVD) of silicon-based dielectric films. Process engineers select this material for production lines requiring tight stoichiometric control and minimal contamination in microelectronic circuits, photovoltaic panels, and thin-film transistors. The compound enters directly in vaporizers for in-situ deposition, essential to achieving uniform layer characteristics and stable dielectric constants needed in high-performance semiconductor devices.

    Industry compliance standards

    • SEMI C80-0915 specification for electronic grade silicon sources
    • IPC/JEDEC J-STD-033 requirements for moisture-sensitive device environments
    • ISO 9001:2015 quality management for electronic chemical supply
    • RoHS Directive 2011/65/EU for hazardous substance content limits

    Typical usage ratio

    • 0.5%–2.0% by weight in reaction blends, depending on target film thickness, purity class, and CVD tool configuration

    Downstream process integration

    • Direct injection into low-pressure or plasma-enhanced CVD systems
    • Interfacing with carrier gas systems for precision dosing upstream of substrate wafers
    • Real-time monitoring for reactive by-product removal and end-point control

    Final product types

    • Sophisticated integrated circuit (IC) wafers
    • Solar cell dielectric layers
    • Thin-film transistor panels for industrial electronics

    2. Silicone Resin Modifier for High-Temperature Coatings

    Ethyldichlorosilane acts as a functional modifier during the synthesis of silicone resins used in weather-resistant and high-thermal-stability coatings for automotive, marine, and industrial infrastructure. Batch reactors introduce the compound to adjust organic group content, fine-tune cross-link density, and improve adhesion to metal substrates. This approach ensures superior resistance to UV, heat, and corrosive chemicals by engineering the molecular architecture at the resin level.

    Industry compliance standards

    • REACH Regulation (EC) No 1907/2006 chemical registration
    • ISO 12944-9:2018 performance standard for protective paint systems
    • ASTM D5132-13 for silicone resin purity
    • UL 94 V-0 flame retardancy for coated components

    Typical usage ratio

    • 0.2%–1.5% of total monomer load, based on desired hydrophobicity, thermal stability, and process viscosity requirements

    Downstream process integration

    • Addition through in-line dosing during alkoxylation or hydrolysis-condensation stages
    • Post-synthesis purification to remove unreacted silanes and hydrochloric acid by-products
    • Quality control testing for consistent Si–C bond incorporation in the polymer matrix

    Final product types

    • Thermosetting silicone enamel paints for automotive engines and exhausts
    • High-durability anti-corrosive coatings for structural steel
    • Protective marine paints and industrial pipeline linings

    3. Silylation Agent in Pharmaceutical Synthesis

    Pharma manufacturers use ethyldichlorosilane as a key silylation reagent to transiently protect hydroxyl or amino groups in the synthesis of active pharmaceutical ingredients (APIs). This practice enables selective reactions and deprotection schedules, critical for efficiency and stereochemical control in multi-step organic syntheses. Teams adjust the reagent load and reaction temperature for API-specific protocols, then employ phase separation and vacuum distillation steps to isolate intermediates or remove siloxane by-products.

    Industry compliance standards

    • EU GMP EudraLex Volume 4 guidelines (Annex 8: Sampling of Starting and Packaging Materials)
    • US FDA 21 CFR Part 211 current Good Manufacturing Practice for Finished Pharmaceuticals
    • ICH Q7 API GMP standards
    • USP General Chapter <661> for extractables and leachables analysis

    Typical usage ratio

    • 1.0–3.0 molar equivalents per target functional group on the API intermediate, adjusted for reactant reactivity and process scale

    Downstream process integration

    • Direct addition in silylation step using anhydrous solvents and inert atmosphere
    • Work-up protocol using aqueous quenching and phase extraction for side product management
    • Final step chemical analysis to confirm removal or conversion of silyl group before further synthesis steps

    Final product types

    • Chiral pharmaceutical intermediates for antihypertensive agents
    • Silylated nucleosides in antiviral APIs
    • Custom process intermediates for peptide synthesis scale-up

    4. Intermediate for Organosilicon Coupling Agent Production

    Chemicals manufacturers employ ethyldichlorosilane as a feedstock in the batch or continuous synthesis of organofunctional silane coupling agents. These agents enable robust adhesion between inorganic fillers and organic polymer matrices within composites, adhesives, and sealants industries. The intermediate reacts under controlled hydrolysis and condensation with various alcohols or amines, optimizing chemical compatibility and coupling strength for the end application.

    Industry compliance standards

    • ISO 9001:2015 certified silane coupling agent production
    • ASTM D4439 definition for adhesives and sealants compositions
    • BS EN 14023 Bitumen and bituminous binders for polymer-modified composites
    • UL-approved material declarations for electrical encapsulants

    Typical usage ratio

    • 30%–70% by weight as a core reactant with alcohol/alkyl groups, varied based on the desired alkoxy functionality and molecular weight target

    Downstream process integration

    • Feeding via jacketed reactors equipped with hydrochloric acid absorption systems
    • Sequential hydrolysis-condensation to form silanol groups and subsequent storage under moisture control
    • Inline monitoring for degree of functionalization and end-group conversion

    Final product types

    • Epoxy silane coupling agents for electrical potting compounds
    • Amino silanes for glass fiber surface treatment
    • Vinyl-functional silanes for polymer-rubber composites

    5. Modifier in Alkoxysilane Crosslinker Synthesis for Adhesives and Sealants

    Ethyldichlorosilane finds essential application during the synthesis of specialized alkoxysilane crosslinkers. These materials impart rapid moisture-curing and superior mechanical flexibility to a range of structural adhesives and sealant formulations. Production engineers blend the dichlorosilane at precise points to ensure the required balance between open working time and fast final cure, with downstream purification maintaining low residual chloride content.

    Industry compliance standards

    • ASTM C920 for elastomeric joint sealants
    • ISO 11600 classification for building and glazing sealants
    • GB/T 14683-2017 for silicone structural adhesives in construction
    • ISO 16938-1 testing for staining of porous substrates by sealants

    Typical usage ratio

    • 1.5%–4.0% by weight in crosslinker precursor formulation, tailored according to target modulus and cure profile

    Downstream process integration

    • Integration at alkoxylation stage with alcohol feedstocks
    • Vacuum stripping of hydrochloric acid by-products prior to downstream blending
    • Filtration and QC procedures to confirm alkoxy group incorporation and minimize discoloration

    Final product types

    • High-performance building sealants for curtain wall and expansion joints
    • Automotive-grade glass adhesives
    • Moisture-cure construction adhesives for bonding metal and stone
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    Certification & Compliance
    More Introduction

    Ethyldichlorosilane: Manufactured Precision from Reactor to Your Process

    Direct from the Source: How Ethyldichlorosilane Leaves Our Reactors

    Producing Ethyldichlorosilane involves more than blending raw materials or simply scaling up an old recipe. Daily, technicians in our synthesis unit oversee each feed, catalyst batch, and temperature ramp, minimizing side products. You find seasoned operators tracking the color, clarity, and odor right off the still. There is a kind of pride in seeing a batch run clean, moisture well under half a percent, and impurity traces below the noise line of analytical instruments. From the reactor's glass-lined walls to the distillation tray, quality emerges from hands-on familiarity more often than textbook procedure.

    Our main model, Ethyldichlorosilane with purity above 99.5%, reflects constant adjustment and troubleshooting. Each run brings another data point on efficiency, batch duration, and impurity profiles. Larger reactors introduce mixing and thermal gradients. Over time, adaptations show up in the plant itself: new condenser sizing, inert gas port placements, and realigning distillation columns. Investing in automation supports operators, but it doesn't replace the value of knowing when a control value falls outside the sweet spot and warrants a walk to the control panel.

    What Ethyldichlorosilane Really Delivers on a Production Floor

    Those who work with organosilicon chemistry know solvents shape the byproduct landscape. In our process for Ethyldichlorosilane, dryness takes precedence over just about every other characteristic. Water scavenging in any stage eats into yield and can promote hydrochloric acid formation—problematic for both equipment and product stability. End-users often need the product to react quickly and thoroughly for the downstream synthesis of functional silanes and polysiloxanes.

    Polymer chemists may recognize Ethyldichlorosilane's value as a cornerstone for custom silicone chains, specialty fluids, or silane intermediates. The product brings reactivity at the silicon-chlorine bonds, ideal for introducing functional groups or generating siloxane frameworks by hydrolysis and condensation. Customers look for fast integration into controlled hydrolysis schemes without delay from byproduct tars or polymeric residues. We pay strict attention to avoid nonvolatile impurities for this reason— each fraction redirected, each tank cleaned down, each logistics partner briefed to avoid cross-contact with other chlorosilanes.

    How Ethyldichlorosilane Compares to Other Chlorosilanes

    Years in the manufacturing plant underline just how much one molecular difference shifts the story between different chlorosilanes. Ethyldichlorosilane, as an example, brings a two-carbon chain that distinguishes it from its methyl or vinyl cousins. Ethyl groups change reactivity profiles both kinetically and in downstream compatibility. In our feedback from polymer clients, they watch how these groups influence properties such as flexibility, reversion resistance, and permeability in the final material.

    Compared to Monochlorosilanes or Methyltrichlorosilane, Ethyldichlorosilane reacts more smoothly in certain alkoxy or amine modification reactions. Reaction rates and product yields carry direct operational costs in the lab and the plant. We spend significant time collaborating with technical teams upstream of end-user applications, troubleshooting fouling, catalysis problems, or downstream discoloration that sometimes trace back to upstream impurity drags or slight moisture excursions. It's never just about getting a product out the door—it’s about making it dependable across variable lot sizes.

    Out of the Lab: Realities from Scale-Up and Storage

    Scaling up lab synthesis tells only half the story. At hundred-liter scales, subtle changes in agitation, vapor flow, and exotherm management start to manifest. On the plant floor, traces of byproducts like diethylsilanes or trichlorosilane build-up during push-through runs unless handled by careful fractionation and column tuning. We’ve built our documentation and operator training on these lessons, with each repetitive problem met by tweaks in process scheduling or preventive maintenance.

    Storage and drum filling show their own quirks. Ethyldichlorosilane demands moisture-exclusion and metal compatibility. Hydroscopic tendencies require closed-system transfer, inert blanketing, and drum or IBC selection for transport. Operators monitor seals and valves for potential leaks or acid etch. In periodic audits, the warehouse team reviews historical records to identify temperature excursions or anything that could kick off unwanted hydrolysis.

    The End-User’s Perspective: Feedback into the Manufacturing Loop

    In conversations with major users of Ethyldichlorosilane, recurring themes emerge. Ease of dose, clean reactivity, batch consistency, and minimal color or turbidity on receipt influence purchasing decisions. Downstream producers of electronics adhesives or cable insulations depend on that predictability. Even slight changes in impurity load alter the characteristics of elastomers or the stability of fluid lubricants. We track every batch for these parameters, linking lot performance with running lab analytics in parallel to customer receipt data.

    Several technical service visits each year result from post-shipment blending or reaction complaints—often linked to small, hard-to-spot upstream variables. The knowledge from our reaction operators and QC lab staff gets relayed directly to the client’s line, avoiding finger-pointing and shortening downtime for everyone. Sometimes, a hornbook solution like flask drying or post-filtering solves customer trouble. Complexities arise with inline reactions, requiring tweaks on our end to produce a tighter fraction or different stabilization approach. We keep lines open for these collaborations, treating each troubleshooting event as one more improvement to both our methods and customer outcomes.

    From Batch Living to Process Reliability: What Consistency Means in Organosilicon Chemistry

    In the chemical business, especially organosilicon manufacturing, staying consistent means more than following a recipe. With Ethyldichlorosilane, each synthesis run becomes a record of what works and what can backfire. Teams document every temperature anomaly, distillation cut, and pH test. Over time, that paperwork becomes a toolkit for future improvements. For example, minor adjustments to the reflux ratio in our rectification towers came out of weeks of data showing co-distillation of lighter silane fractions.

    On the compliance front, regulations hit hard on both product purity and handling safety. Manufacturing compliance officers walk the lines with process engineers reviewing batch records, emissions logs, and hazardous waste manifests. Maintaining regulatory compliance with evolving standards calls for updates to our process controls, and also careful selection of which suppliers’ raw materials hit the right impurity and trace metal levels. For Ethyldichlorosilane, halide content, trace metal load, and non-volatile residue reports all factor into buyer acceptance. Years of rigorous self-auditing build not only paperwork, but also customer trust.

    Attention to Safety: From Plant to Packaged Product

    Safety starts even before the feedstocks enter the facility. Chlorosilanes carry the risk of hazardous decomposition with water and release of hydrogen chloride gas. Every team member holds training on chemical hygiene, donning correct PPE, and recognizing off-odors that might escape detection by machines. The shift leaders brief incoming crew about changes in planned runs, turnaround schedules, and emergency protocols. Maintenance brings its own exposure risks; pipelines and gaskets get swapped out at predefined intervals—never after the fact. Fire suppression and spill response tools sit close at hand for every operator’s station.

    On the customer end, we maintain a library of handling guides, best practices from decades of unintentional mishaps, and quick reference for drum storage longevity under ambient or reduced temperature. Events like trace moisture introduction during interface changes drive procedures for closed loop transfer systems, nitrogen purging, and drum headspace control. Feedback from these real incidents shapes the company-wide safety playbook, making each shipment just a bit more robust.

    Route Optimization and Waste Minimization

    As manufacturers, we face the challenge of reducing both operational cost and environmental output without sacrificing batch quality. Processing Ethyldichlorosilane leaves few places to hide mistakes; a small leak, off-spec feed, or process shortfall rapidly bleeds yield and ramps up cost for reprocessing or remediation. Over time, investments in process route optimization cut both carbon and hazardous output. Examples include closed-loop solvent recovery, reflux optimization based on real-time sensors, and modular separation equipment that can be deployed on-the-fly.

    Our internal audits chart progress in dropped waste drums per thousand kilograms of product shipped. Low-waste process improvements spring as much from the floor level as from outside consultants. Operators switching to inline monitoring for aqueous quench improve both throughput and byproduct handling, for example. By structuring plant incentives around waste reduction metrics, improvements build organically from those closest to day-to-day production, rather than being imposed top-down by theoretical models.

    Engagement with End-User Development and Co-Innovation

    Co-development drives many of the application-specific refinements in our Ethyldichlorosilane lineup. Whether it’s dialing in a grade for pharmaceutical intermediates or tailoring a package for high-purity silicone fluids, meaningful changes happen in real time with end-users’ R&D teams. Instead of pushing standard grades and expecting customers to conform, we exchange knowledge openly, sending technical service engineers to customer facilities and welcoming partner chemists for joint runs at our site.

    Process tweaks from these partnerships produce knock-on benefits: increased product shelf life, easier catalyst removal, or minimized discoloration under storage. Chemists and engineers replicate example customer conditions in our own evaluation labs. Directly testing for product performance under intended use responds far more realistically than sterile, siloed approaches. The insights gleaned from these cycles of feedback come with equal measures of humility and accomplishment, as every new downstream chemistry brings both promise and challenges that demand open books and clear eyes.

    Addressing Raw Material Volatility and Supply Security

    No discussion of manufacturing Ethyldichlorosilane would be complete without mentioning raw material reliability. Shortages, price shocks, and logistics bottlenecks all threaten manufacturing continuity. We approach sourcing with a preference for long-term partnerships, often auditing key suppliers ourselves. Full transparency about batch analytics, impurity scan, and delivery times goes a long way when weather or market forces turn against routine supply chains.

    Internally, raw material inventory gets tracked down to individual drums and daily reconciliations. Buffer stocks absorb much of the market whiplash but also come with holding costs and risk of aging feedstocks. In recent years, digital tracking and predictive analytics smooth out procurement schedules, catching forecast errors by matching incoming delivery windows against run rates. The real payoff comes during market disruptions—we weathered last year’s halogen supplier outage without needing to shortchange any customer order, despite cost pressures.

    Meeting Demands of Modern Applications

    In the past, Ethyldichlorosilane largely entered backbone intermediate work in basic organosilicon production. Today it sees use in much more diverse arenas: precision coatings, encapsulation for microelectronics, modified siloxane resins for next-gen medical devices, and even niche agricultural adjuvants. Increased application intensity raises both the scrutiny on trace contaminants and the requirement for documentation. New fields, especially electronics and medical components, place restrictions on extractable heavy metals and require chain-of-custody proofs stretching back from finished good to precursor feedstock.

    Global customers request product in a variety of packaging: from 25 and 200 liter drums for smaller, batch-process factories to ISO tanks for the major compounders. Each container gets assigned its specific cleaning and prep process, avoiding the risks of cross-contamination. In some end-uses, product is dosed under inert gas and remains sealed until just before use, requiring all logistics and storage interfaces to respect water-exclusion and pressure guidelines. Even at bulk volumes, the demand for precision rarely fades.

    Putting the Manufacturer’s Value in Perspective

    As direct producers of Ethyldichlorosilane, our value comes from more than cost or technical datasheets. Our role includes troubleshooting complex syntheses with clients, advising on plant retrofits, and developing application-focused grades to stay ahead of regulatory and market forces. Over the years, the relationship between manufacturing expertise and customer process reliability tightens. On the business side, the focus remains on supporting long-term viability—balancing investments in new production lines, sustainability initiatives, and workforce training.

    We view each shipment of Ethyldichlorosilane as an extension of the plant floor itself—delivering not just a product, but also decades of hard-won operational know-how. Every batch report, technical data exchange, and service call forms another thread in the global web of high-performance materials manufacturing. Staying close to the molecules is what lets us respond meaningfully to every challenge or disruption that surfaces in markets, applications, or regulations.

    Pursuing a Sustainable Future for Chlorosilane Chemistry

    The world of silicon chemistry never stands still. New environmental expectations keep rising: stricter emission limits, evolving waste management rules, and calls for higher transparency throughout the supply chain. We keep pace not by resting on tradition, but by weaving process improvement and sustainability into each operational review. Closed-cycle solvent systems, on-site abatement upgrades, and coordination with external recyclers all feature in our annual progress reviews.

    Customers, regulators, and neighbors demand accountability and innovative thinking. The challenge for us as manufacturers centers on making each improvement practical and measurable. A less visible, but equally crucial, investment goes into operator training and plant safety. The care each technician and engineer brings—whether running a high-volume reactor or inspecting warehouse stores—sets the foundation for both safety and product evolution.

    Trust Built Batch by Batch

    Ethyldichlorosilane occupies a unique crossroads in advanced materials manufacturing. Our commitment as producers starts with batch controls and stretches to honest conversations with the most demanding application chemists. We build trust not by describing potential, but by delivering performance—batch after batch, year after year. Every improvement we make in process stability, raw material reliability, and end-user collaboration makes its way back to the final properties realized in the customer’s lab or assembly line.

    Within our own manufacturing teams, the sense of responsibility extends well beyond a single shift or campaign. Senior operators mentor newcomers on the nuances of handling reactive intermediates and the value of careful control log entries. Maintenance technicians keep plant utilities tight, catching potential leaks before they translate into lost yield or environmental issues. QC staff, who run the final tests, combine advanced analytics with the eye of experience to keep product standards exact.

    Shifts overlap, knowledge persists, and every drum tagged for shipment reflects the dedication and rigor invested in its production. Our plant’s story is found in the reliability our customers expect, the solutions we help create, and the continual pursuit of safer, cleaner, and better-performing chemical products for every application that demands more from its raw materials.