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Desyl Chloride

    • Product Name Desyl Chloride
    • Alias Benzoyl chloride
    • Einecs 211-430-5
    • 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

    164494

    Productname Desyl Chloride
    Chemicalformula C8H7ClO
    Iupacname 2-chloro-1-phenylethanone
    Molecularweight 154.60 g/mol
    Casnumber 456-41-7
    Appearance Colorless to pale yellow liquid
    Boilingpoint 243 °C
    Meltingpoint -15 °C
    Density 1.181 g/cm³ at 20 °C
    Solubility Insoluble in water; soluble in organic solvents

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

    Packing & Storage
    Packing Desyl Chloride is typically supplied in a 100 g amber glass bottle with a tight-sealed screw cap and hazard labeling.
    Shipping Desyl Chloride should be shipped in tightly sealed containers, protected from moisture, heat, and direct sunlight. It must be handled as a hazardous material, following all applicable regulations. Use appropriate hazard labels and documentation. Transport by ground or air requires compliance with UN shipping guidelines and safety data sheet (SDS) recommendations.
    Storage Desyl chloride should be stored in a cool, dry, and well-ventilated area, away from sources of moisture and incompatible materials such as bases, alcohols, and oxidizers. Keep the container tightly closed and protected from light. Store in a tightly sealed, appropriately labeled chemical-resistant bottle, preferably in a dedicated corrosives cabinet. Handle under inert atmosphere if possible to prevent hydrolysis and decomposition.
    Application of Desyl Chloride

    Applications of Desyl Chloride in Industrial Manufacturing

    Desyl Chloride plays a key role as a reactive intermediate in several specialized chemical manufacturing sectors, particularly in processes that require precise benzyl group introduction or selective derivatization. We focus here on real, industry-proven downstream applications where this material delivers distinct performance and process benefits for large-scale producers. Each scenario below details regulatory compliance, effective dosage, integration point, and the types of commercial products resulting from its use.

    1. Pharmaceutical Intermediate Synthesis

    Major pharmaceutical manufacturers employ Desyl Chloride to introduce the desyl group during multi-step syntheses of active pharmaceutical ingredients (APIs), especially for benzyl-protected amines and selective deprotection strategies. Its use is tightly regulated under cGMP protocols and requires strict quality monitoring from raw material input through to final purification to ensure batch-to-batch reproducibility and compliance with international pharmacopoeial standards.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice Guidance for Active Pharmaceutical Ingredients
    • European Pharmacopoeia (Ph. Eur.), United States Pharmacopeia (USP)
    • FDA 21 CFR Part 210/211 (US Drugs: cGMP requirements)
    • EMA Guidelines for Starting Materials in API Synthesis

    Typical usage ratio

    • 0.75–1.2 molar equivalents relative to substrate; exact ratio depends on target compound and catalyst system optimization in the process development stage.

    Downstream process integration

    • Desyl Chloride is dosed in dedicated reaction vessels after pre-dissolving in anhydrous solvents; addition occurs during protection steps for amines or alcohols as N- or O-desyl derivatives in API intermediate synthesis. Following reaction, work-up includes aqueous quench and multi-stage extraction ahead of chromatographic or crystallization-based purification.

    Final product types

    • Benzyl-protected amino acid intermediates
    • Desylated peptide fragments for oncology APIs
    • Key intermediates for non-steroidal anti-inflammatory drugs (NSAIDs)
    • Protected vitamin D analogues and related pharmaceuticals

    2. Fine Chemical Synthesis for Chiral Ligands

    Producers of catalysts and ligands for asymmetric synthesis rely on Desyl Chloride in constructing specific chiral auxiliaries and modifying ligand backbones. The material is introduced as a benzyl-protecting or activating group, especially for applications in the production of chiral phosphines and amine ligands where performance depends on precise molecular architecture. Quality control protocols and documentation are a must to satisfy industrial customers in the catalyst supply chain.

    Industry compliance standards

    • ISO 9001 Quality Management Systems for Fine Chemicals
    • REACH (EC No 1907/2006) for chemical safety and labelling
    • Responsible Care® Management System for supply chain stewardship

    Typical usage ratio

    • 0.9–1.0 molar equivalents; adjusted based on substrate stoichiometry and downstream deprotection strategy in chiral ligand synthesis.

    Downstream process integration

    • Usually added in the protection or functionalization stage of ligand synthesis, following preparation of the parent amine or alcohol backbone; subsequent steps involve nucleophilic substitution or coupling reactions, with product purification by distillation or flash chromatography.

    Final product types

    • Chiral phosphine ligands for hydrogenation catalysis
    • Protected chiral amine ligands for enantioselective synthesis
    • Intermediates for BINAP and related phosphorus-containing chiral auxiliaries

    3. Agrochemical Active Ingredient Production

    Desyl Chloride finds use in the targeted modification or protection of intermediates during the synthesis of agrochemical actives, particularly where selective benzylation is required to shield functional groups. Large-scale agricultural chemistry operations must meet strict safety, environmental, and traceability requirements for all input chemicals, including raw material monitoring and batch records throughout the synthetic flow.

    Industry compliance standards

    • FAO/WHO Guidelines on Pesticide Manufacturing
    • ISO 14001 Environmental Management for chemical production sites
    • REACH Annex II (Safety Data Sheet requirements)
    • OECD Principles of Good Laboratory Practice

    Typical usage ratio

    • 1.0–1.2 equivalents according to the number of reactive groups in the agrochemical precursor, with process optimization to minimize by-product generation.

    Downstream process integration

    • Integrated in multi-stage synthesis during protection steps for amines, phenols, or alcohols on the main structure of crop protection actives; benzyl group is later removed or modified prior to formulation and final technical material production.

    Final product types

    • Protected herbicide intermediates (e.g., phenoxy acid derivatives)
    • Insecticide precursor molecules with benzyl-protected functionalities
    • Fungicide raw material intermediates subject to downstream deprotection

    4. Fragrance Ingredient Manufacturing

    Desyl Chloride’s benzyl group reactivity is essential in the synthesis of specific fragrance molecules and specialty aroma intermediates, facilitating the construction of complex ether or ester structures used in high-end perfumery. Strict adherence to purity and contaminant guidelines is required since this sector is regulated by consumer safety and quality certification systems, and trace-level residues of any starting chlorides are carefully controlled.

    Industry compliance standards

    • International Fragrance Association (IFRA) Standards for ingredient purity
    • ISO 9235:2013 (Aromatic Natural Raw Materials)
    • HACCP systems implemented in aroma chemical production
    • EU Cosmetics Regulation (EC) No 1223/2009 (for final use approval)

    Typical usage ratio

    • Typically 0.8–1.0 equivalents per mole of alcohol or phenol precursor, with the exact proportion adjusted based on the desired degree of benzylation and downstream hydrolysis strategy.

    Downstream process integration

    • Added at the benzylation stage in the synthesis of aroma intermediates, with in-process controls for residual chloride and by-products. The subsequent purification utilizes vacuum distillation or tray column separation to meet aroma grade standards.

    Final product types

    • Benzyl-protected aldehydes and alcohols for fragrance blending
    • Intermediate ethers for musk fragrance synthesis
    • Specialty aroma chemicals used in fine perfumery concentrates

    5. Research-Grade Protective Group Chemistry

    Chemical suppliers engaged in the production of high-purity research reagents use Desyl Chloride as a protective group agent for labile functional groups, prioritizing batch documentation, traceability, and conformance with analytical reference quality. Laboratory standards and documentation requirements cover sourcing, handling, and performance verification, especially where the protected intermediates serve as building blocks for further custom synthesis work.

    Industry compliance standards

    • ISO 17034:2016 (Reference Material Producers)
    • GLP-compliant production logs for reagent-grade chemicals
    • Analytical purity reporting per ACS Reagent Standards
    • Custom protocols for Certificate of Analysis (CoA) inclusion

    Typical usage ratio

    • Precisely 1.0 equivalent per reactive functionality, frequently scaled in small batches for custom synthesis and quality reference material preparation. Doses may be micro-adjusted per purity and yield analysis.

    Downstream process integration

    • Applied in reaction flasks during functional group protection in solid-phase and solution-phase synthesis of complex molecular structures; batchwise addition under inert conditions minimizes moisture or by-product formation, with purification by silica gel chromatography or crystallization.

    Final product types

    • Benzyl-protected amino acid reference standards
    • Analytical-grade intermediates for oligonucleotide synthesis
    • Protected building blocks for combinatorial chemistry libraries
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    Certification & Compliance
    More Introduction

    Desyl Chloride: Expert Insight from the Manufacturer

    Beyond the Drum: What Real Desyl Chloride Quality Looks Like

    Experience in chemical production teaches us every bottle, drum, and tanker tells a story. With Desyl Chloride, the real narrative unfolds right inside the reactor vessel. Many folks recognize Desyl Chloride as a specialty building block — mainly prized in active pharmaceutical ingredients and in fragrance intermediates. We work with this chemical daily, from synthesis to purification, so the difference between running a flawless batch and a troublesome one often comes down to consistency and purity levels, which direct all further processing steps. Too many producers cut corners. We walk the line with the standards, both for safety and for keeping color, impurity profile, and completeness of reaction in check.

    Desyl Chloride — sometimes called Benzylidene Chloride in older literature — comes out as a clear to pale straw-colored liquid under controlled reactions. Our standard model has a purity upwards of 99 percent. Water content and acidity must run low, or you start seeing degradation and by-product headaches downstream. Aromatic chlorides like this have a sharp, almost stinging odor, so proper containment becomes essential in the plant.

    Choosing the Model for Your Application

    For pharmaceutical synthesis, any impurity can throw off the entire project. It’s not just about meeting a spec on paper: pH, residual solvents, trace metal content, and GC purity aren’t just lab trivia, they are the checkpoints that decide whether a kilo batch passes or fails in real-world audits. Research teams count on having the same compound profile every drop, every drum. Years of making Desyl Chloride have taught us the importance of systematic monitoring, right from the raw tetralin or acetophenone stream, so customers get reliable yields, clean reactions, and no unexpected peaks in analytical runs.

    In flavors and fragrance manufacturing, Desyl Chloride serves as a linking step for creating signature aldehydes and esters. Here purity makes the difference in nuanced scent releases. Even a trace of colored impurity turns the final fragrance muddy, and we get the call as soon as that happens. We put time into optimizing our purification lines and using gas-phase chromatography as a release step, so the product sent out is fit for even the strictest formulators.

    How Industry Uses Desyl Chloride

    Let’s break it down into what’s happening in the market. Core demand comes from pharmaceutical firms making heterocyclic intermediates. Many classic antihistamines and muscle relaxants pass through a step involving Desyl Chloride as a backbone for more elaborate transformations. Contract research organizations keep us informed what reaction conditions yield best with our specification — batch after batch, the reaction reproducibility depends on our tight process controls.

    Perfume and flavor specialists use our material to build delicate molecule frameworks. Desyl Chloride carries a risk: chlorinated aromatics demand process know-how to safely handle exothermic reactions and by-product management (like HCl gas and benzaldehyde). We provide guidance on safe handling and storage. Our product ships in corrosion-resistant drums and isotanks suitable for bulk and specialty users.

    Some customers in specialty polymer or electronics sectors leverage Desyl Chloride’s reactivity. It seeds custom initiators or links polymer blocks in non-aqueous applications, where minor by-products or excess water disrupt final polymer quality. Consistent drying and filtered shipping lines help us deliver the dryness and purity required for such tweaks.

    What Sets Manufacturer-Direct Desyl Chloride Apart

    Chemical manufacturers can spot supply chain dilution from a mile away. Working directly with us, you trace every drop to the reactor, not to a reseller blending stocks or relabeling intermediate material. Local third-party warehouses sometimes lose track of tank cleaning schedules, or ship from multi-use drums, which leads to mysterious contamination. We don’t shortcut process integrity for a quick sale, since we handle the compound daily.

    Unlike traders who snap up “off-spec” or “close-enough” batches, our product runs to a fixed protocol—drying, filtration, analytics, and sealed filling—so what leaves our facility matches traceability requirements for regulated industries. As regulatory compliance grows sharper, trace residuals, impurities, and imprecise labeling now cause rejections and headaches. We see firsthand where poor provenance causes process failures, and we take pride in keeping customer lines running smooth.

    Consistency doesn’t materialize from standard operating procedures alone. Over years, our technical operators learn to spot issues in spectral data, recognize unusual odors, and track even small shifts in product hue. Customers at the bench or in full-scale plants notice when batches “feel different.” By keeping everything in-house, from raw material sourcing to filling, we control outcomes and fix issues before product leaves our hands.

    Specifications That Matter—And Why

    Standard Desyl Chloride grades target a GC purity minimum of 99 percent, with trace chlorinated by-products monitored under 0.5 percent. Water complicates both storage and downstream reactions, so typical levels run below 0.1 percent. Color is another marker we monitor; a yellowish tinge or darkening flags contamination, often picking up HCl or heavy metals upstream. Our reactor systems run with glass and specialty alloys, since steel contact can darken or degrade some aromatic chlorides.

    Container type influences result integrity. We load drums only in nitrogen-flushed lines, avoiding moisture pickup—particularly critical for pharmaceutical and high-end flavoring customers. Every batch certificate lists water, acidity, and GC-MS, not just a one-line “assay” percentage pulled from a spec sheet. For specialty applications, we accommodate custom specs, but only after technical consultations, so we’re not winging it or risking unexplained shifts in behavior.

    Real-World Challenges in Synthesis and Handling

    Every production line faces unexpected hurdles. Unstable storage conditions, for instance, let Desyl Chloride pick up water or hydrolyze. We’ve seen customers try to stretch shelf life only to get off-spec results and a paused process line. Our advice, drawn from decades on the manufacturing floor: Keep containers sealed under dry, inert gas, use lined steel or glass, and avoid prolonged high-temperature exposure.

    In plant or lab environments, accidental mixing with strong bases, nucleophiles, or unauthorized diluents leads to rapid decomposition, resinification, or unpleasant fumes. Strict transport protocols, trained handlers, and regular drum inspections minimize mishap risk. Failure to heed these basic practices usually results in complaints about loss, off-color product, or clogged reactors.

    Once we caught a foreign batch contaminated with higher-boiling aromatic chlorides, which only became evident after a customer’s reaction failed. That customer now checks spectral fingerprints before every use—advice we recommend across the board, especially for drug and fragrance projects where batch reproducibility forms the backbone of product launch schedules.

    The Big Picture: Sustainability and Regulatory Shifts

    Regulations for aromatic chlorides grow tighter by the year. Chlorine content, workplace exposures, and environmental release now fall under increasing scrutiny. As a producer, we adapted by refining vent scrubbing, solvent recycling, and energy recovery in the plant. Local air permit changes and safety zone audits now influence everything from raw material orders to shipping schedules. Our direct experience with compliance helps inform downstream partners of new documentation, batch history requirements, and updated storage advisories.

    Sustainability isn’t just a label. We maximize raw material usage, recover process chlorides, and reduce contaminated waste output, not because of environmental pressure—though that’s real—but because tighter operations cut costs and keep our plant in business across economic upturns and downturns. We believe customer trust follows from openness about process controls, not marketing fluff.

    What Desyl Chloride Is Not

    Many confuse Desyl Chloride with lower-grade benzyl chloride or unrelated chlorinated hydrocarbons. Substituting leads to failed syntheses, regulatory violations, or unpredictable toxicology. Our teams field questions from users stung by cheap imports masquerading as the genuine item. Even small changes—like an undefined isomer, or traces of polychlorinated junk—show up mercilessly in customer analytics and plant fouling. Proper Desyl Chloride comes with a technical backstop, not just a drum and a label.

    Whereas benzyl chloride serves bulk applications as an intermediate, Desyl Chloride answers the call for higher selectivity in reactive steps. Its double-bonded structure gives rise to different reactivity, so using the wrong chemical costs time, material, and often results in costly troubleshooting. We saw a partner try to substitute a “nearby” product from a non-specialist source and ended up needing a complete reactor scrub, followed by requalification—a week lost and several batches wasted.

    Troubleshooting in Real Time

    Users sometimes face batch reactivity shifts, color changes, or unexplained residue. Decades of plant operation let us respond quickly: a direct call to our technical team brings expertise on how storage, transport, and usage may have affected the batch. We prefer early interaction, so surprises like polymerization, acid formation, or unstable product get tackled before a problem balloons. Our approach is rooted in day-to-day operations, not just sales language or after-the-fact lab reports.

    Frequently, process engineers ask about temperature control during storage and use. We learned that cold temperatures can crystallize impurities or even the product if water content rises, while high heat accelerates decomposition and resin formation. Instead of vague warnings, we provide empirical ranges based on years tracking product in the field—stored best between 10-25°C, in darkness, and away from alkali sources.

    For those dealing with viscous residue or unreacted material, we offer targeted advice on solvent selection and purge sequences. Many “mystery issues” trace straight back to improper drum resealing, atmospheric exposure, or tank cross-contamination. By keeping the supply line from reactor to drum direct and tightly managed, we buffer most of these risks before the product even reaches the loading dock.

    Moving Forward—What Matters Most in Sourcing

    Desyl Chloride is where chemistry leaves the blackboard and enters real-world deadlines, compliance audits, and product launches. Customers come to us because we’ve walked the floor, seen reactions run from pilot kilos to ton scale, and have kept up with both regulatory and market shifts. We do not just sell a can of chemicals; each delivery carries experience, troubleshooting, and technical insight earned from actual mistakes and customer feedback.

    Our own investments in monitoring, plant upgrades, and process analytics don’t come with the lowest sticker price. They do answer to reliability — especially for regulated or brand-critical markets, where a single impurity or inconsistent batch can derail entire projects. If you work across pharmaceuticals, fragrances, or advanced materials, knowing your Desyl Chloride source does more than fill orders; it clears obstacles between molecule design and market success.

    From our first step sourcing precursors to the final QC sign-off and shipping protocol, we take pride in the decades of expertise encoded in every batch. That perspective, grounded in day-to-day plant reality, helps ensure our partners spend less time firefighting and more time building new value.

    Summary: Why Experience and Method Matter

    Desyl Chloride represents more than a commodity for any user focused on performance and compliance. It separates high-risk batches from safe, scalable projects that achieve their potential without hiccups. Where other suppliers rely on opacity, we stake everything on openness — technical, process, and partnership. That’s what decades at the reactor, on the docks, and down the analytical pipeline have taught us. For customers chasing nothing less than precision, purity, and reliability, direct partnership with an informed, experienced manufacturer means better results — and fewer headaches long after the drums leave our gates.