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3,3-Dimethylbutyryl Chloride

    • Product Name 3,3-Dimethylbutyryl Chloride
    • Alias Pivaloyl chloride
    • Einecs 211-927-4
    • 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

    244582

    Chemical Name 3,3-Dimethylbutyryl Chloride
    Synonyms Pivaloyl chloride
    Molecular Formula C6H11ClO
    Molar Mass 134.61 g/mol
    Cas Number 3282-30-2
    Appearance Colorless to pale yellow liquid
    Boiling Point 106-108 °C
    Density 0.94 g/mL at 25 °C
    Refractive Index 1.412 at 20 °C
    Melting Point -55 °C
    Solubility Reacts with water
    Odor Pungent

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

    Packing & Storage
    Packing A 500 mL amber glass bottle, tightly sealed with a PTFE-lined cap, labeled "3,3-Dimethylbutyryl Chloride (CAS 921-59-5)."
    Shipping 3,3-Dimethylbutyryl chloride should be shipped in tightly sealed containers made of compatible materials, protected from moisture and light. It is classified as a corrosive and flammable liquid, requiring proper labeling and handling according to hazardous material transport regulations. Transport in ventilated areas, away from heat, ignition sources, and incompatible substances.
    Storage 3,3-Dimethylbutyryl chloride should be stored in a cool, dry, and well-ventilated area, away from heat, moisture, and incompatible substances such as water, alcohols, amines, and strong bases. The container must be tightly sealed, clearly labeled, and made of corrosion-resistant material. Store under inert atmosphere if possible, and keep away from sources of ignition. Use secondary containment to prevent leaks.
    Application of 3,3-Dimethylbutyryl Chloride

    Applications of 3,3-Dimethylbutyryl Chloride in Industrial Manufacturing

    3,3-Dimethylbutyryl Chloride serves as a precision acylation agent in advanced industrial synthesis, supporting manufacturing of high-purity specialty chemicals. Its chlorinated structure enables strict control in acyl group introduction, thus opening downstream applications in agrochemicals, pharmaceuticals, polymer modification, fragrance intermediates, and photoresist materials production.

    1. Synthesis of Agrochemical Active Intermediates

    Manufacturers in crop protection chemistry utilize 3,3-dimethylbutyryl chloride for introducing bulky acyl groups during the multi-step synthesis of herbicide and fungicide actives. This allows building molecular backbones with resistance to degradation, essential for field efficacy. The material reacts with selected amine or alcohol substrates under anhydrous conditions, requiring in-line HCl scrubbing and controlled temperature addition. Its tight QC ensures low residual chloride compatible with large-scale technical synthesis.

    Industry compliance standards

    • FAO/WHO Specifications for Agricultural Pesticides
    • REACH Regulation (EC) No 1907/2006 for registration and safety information
    • ISO 9001:2015-certified process control
    • Globally Harmonized System (GHS) for labelling and handling

    Typical usage ratio

    • Used at a 1.05–1.15 molar ratio relative to substrate, adjusted to minimize over-acylation or excess chloride
    • Batch size and stoichiometry fine-tuned based on target molecule and reaction yield

    Downstream process integration

    • Introduced post-hydrolysis and pre-coupling in active ingredient assembly
    • Reacts in closed vessels equipped with acid gas capture
    • Upstream drying of solvents essential to avoid hydrolysis

    Final product types

    • Triketone herbicides
    • N-alkylated fungicide actives
    • Insecticide side-chain modified bases
    • Granulated crop protection formulations

    2. Pharmaceutical Intermediate Production

    Production plants engaged in API synthesis employ 3,3-dimethylbutyryl chloride for selective acylation steps during complex heterocycle construction. Its reactivity allows precise introduction of sterically hindered acyl groups to pharmaceutical scaffolds that impact bioactivity and metabolic stability. The material is handled under GMP-compliant conditions, reacting with protected amines or alcohols and ensuring trace residual solvents and impurities remain below pharmacopeia limits.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice Guidance for Active Pharmaceutical Ingredients
    • USP/NF and Ph. Eur. monographs for residual solvents control
    • FDA 21 CFR Part 211 for finished API quality systems
    • Traceability per ISO 13485 for intermediates used in medical APIs

    Typical usage ratio

    • 1.02–1.10 molar equivalents per target substrate in acylation, with post-reaction purification
    • Excess minimized to reduce hydrolysis product removal load

    Downstream process integration

    • Charged as a neat liquid or diluted in dry DCM or toluene under nitrogen
    • Acylation followed by rapid quench and phase separation to isolate desired intermediate
    • Inline process monitoring to track complete conversion

    Final product types

    • Beta-lactam intermediates
    • Steroid acyl derivatives
    • Piperidine-based CNS drug precursors
    • Pulmonary and anti-infective active ingredient precursors

    3. Manufacturing of Polymer Chain Modifiers

    Producers of specialty polymers such as tailored polyesters and acrylate resins use 3,3-dimethylbutyryl chloride for terminal group modification. Its introduction at the polymer end-capping stage can provide hydrophobicity or chemical resistance to finished plastic materials. Reaction conditions require solvent-free melt or solution processing, tight temperature control, and direct application into the reaction vessel immediately before chain termination, minimizing loss through hydrolysis.

    Industry compliance standards

    • RoHS Directive 2011/65/EU (for electrical and electronics plastics)
    • ISO 9001:2015 for process management
    • FDA 21 CFR 177.1520 (for polymers with food contact applications—where applicable after migration testing)

    Typical usage ratio

    • Typically 0.2–3.0 wt% relative to total monomer load; adjusted based on chain end concentration and polymer molecular weight
    • Dosing confirmed by off-gas analysis and end-group titration

    Downstream process integration

    • Added at the final polymerization phase before devolatilization
    • Requires agitation and vacuum to strip by-products and HCl quickly
    • Monitored via melt-flow index and FTIR end-group analysis

    Final product types

    • Hydrophobic polyester fiber resins
    • UV-resistant acrylic films
    • Customized engineering thermoplastics
    • Functional copolymer beads for coatings

    4. Fragrance and Flavor Intermediate Synthesis

    Aromachemical manufacturers rely on 3,3-dimethylbutyryl chloride to produce specialty esters and ketones used as intermediates in fragrance and flavor compositions. Its bulky acyl group imparts both volatility modulation and unique olfactory profiles. The material is used in esterification or Friedel-Crafts acylation as part of a controlled, solvent-dried, low-temperature process, ensuring the resulting intermediates meet IFRA and food-grade purity limits.

    Industry compliance standards

    • IFRA Standards for fragrance material safety
    • FEMA GRAS status (when intermediates are destined for flavor use)
    • ISO 9001:2015 quality assurance protocols
    • EU Regulation (EC) No 1334/2008 (flavorings and certain food ingredients)

    Typical usage ratio

    • Used at 1.0–1.05 molar equivalents versus alcohol or arene
    • Stoichiometry optimized to avoid by-product controls and flavor note interference

    Downstream process integration

    • Added following initial substrate purification and solvent drying
    • Transferred via peristaltic pump into reaction vessels with chilled jackets
    • Crude intermediates purified by distillation or column chromatography

    Final product types

    • Branched ester fragrance notes
    • Specialty ketone intermediates for musk synthesis
    • Flavoring agents for confectionery applications
    • Intermediates for sandalwood or amber complexes

    5. Electronic-Grade Photoresist Component Manufacturing

    Producers of advanced electronic materials employ 3,3-dimethylbutyryl chloride as an acyl source in photoactive compound synthesis. Its structure supports creation of protected phenolic groups and high-resolution acid-sensitive resins. The input is dosed in strictly anhydrous microelectronic-grade environments, using continuous flow or batch processes to avoid trace metal and particulate contamination, validated by semiconductor industry analytical protocols.

    Industry compliance standards

    • IATF 16949:2016 for electronics raw material supply
    • SEMATECH/SEMI purity specifications for semiconductor processing
    • ISO 14001:2015 for environmental management in fab chemicals
    • Management of Change and full trace-level impurity disclosure per end-user fab requirements

    Typical usage ratio

    • Integrated at 0.5–1.2 equivalents per phenolic or aromatic substrate in diazoketone synthesis
    • Adjusted by spectrophotometric purity analytics after each batch

    Downstream process integration

    • Dispensed under nitrogen blanket to avoid water vapor
    • Added to reaction vessels with precise temperature and agitation control
    • Matched with trace metals scan to ensure impurity compliance

    Final product types

    • Photoresist resin pre-polymers
    • Advanced lithography sensitizers
    • Semiconductor coating materials
    • Liquid imaging resins for thin-film applications
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    Certification & Compliance
    More Introduction

    3,3-Dimethylbutyryl Chloride: Experience in Quality Manufacturing

    Understanding 3,3-Dimethylbutyryl Chloride from a Manufacturer’s Perspective

    Manufacturing specialty acid chlorides brings plenty of trade knowledge one can only pick up in the plant or lab. 3,3-Dimethylbutyryl chloride stands out among these compounds. The chemical formula, C6H11ClO, shows a straightforward backbone, but an experienced hand knows the unique blend of reactivity and selectivity that comes with this molecule. Our process begins with a focus on the raw materials, as the purity and control over each input during synthesis determine the product's downstream reliability. Raw isobutyric acid and thionyl chloride, both of which carry their own safety and handling challenges, come together in a controlled environment. Tight temperature management and specialized glass-lined reactors ensure that the desired acid chloride forms in high yield, minimizing the risk of by-product formation or batch variability.

    Reliable Consistency in Chemical Profile and Purity

    True consistency across each lot of 3,3-dimethylbutyryl chloride demands deep expertise in both process engineering and analytical chemistry. On our production lines, we monitor not just the final content of the acid chloride, but also residual acidity, free chlorine, and trace organic impurities. Each sample is monitored by gas chromatography and titration, not just to check compliance, but to spot unseen trends in upstream raw material quality or equipment fouling. Over the years, a sharp eye for these data points has reminded us time and again how a missed impurity creeps into downstream products, causing headaches for customers, especially those running large-scale synthesis or pharmaceutical intermediates.

    Crucially different from other acid chlorides we run, 3,3-dimethylbutyryl chloride holds its own with a slightly bulkier molecular structure due to its branched configuration. This, in practical terms, reduces volatility concerns compared with simpler acid chlorides like acetyl chloride. Fewer emissions during handling translate to easier storage and safer transfer for bulk users. We have faced far fewer incidents with this molecule compared to some of the lighter, more demanding acid chlorides.

    Applications Across Fine Chemicals and Pharmaceutical Synthesis

    The bulk of our 3,3-dimethylbutyryl chloride output goes directly into the hands of chemists crafting advanced intermediates. Our clients in pharmaceuticals rely on steady chlorination reactions, and they keep coming back because they need a reliable reagent. This acid chloride typically reacts with alcohols and amines to build esters and amides, and its solid performance in these reactions has been tested time after time in both gram scale and multi-ton batches. The branched structure of the molecule can introduce interesting steric effects into target molecules, which the medicinal chemists often value for specific drug candidates.

    We've learned through years on production lines that the difference between a happy customer and a failed batch can hang on the details of moisture content. 3,3-Dimethylbutyryl chloride, if not handled with glassware in a dry environment, quickly hydrolyzes to the unwanted acid, releasing HCl gas. Each drum and bottle leaving our site reflects strict storage under inert gas and moisture-barrier linings, protecting the product’s reactivity until it reaches the reactor walls of the customer.

    Model and Packaging as Seen on the Shop Floor

    The vast majority of our customers purchasing 3,3-dimethylbutyryl chloride order in UN-rated steel drums, usually in quantities ranging from 25 liters up to several hundred liters per shipment. This product model suits the requirements of most synthetic plants. Customers pushing for kilo quantities often consult with us about compatible glass or HDPE containers, always looking for a balance between chemical compatibility and ease of handling. Safety consciousness comes naturally when you’ve spent time walking the warehouse aisles: regularly stacked drums, properly labeled, with permanent venting to avoid pressure build-up over time.

    We have swapped out several different drum types over the decades and found that epoxy-lined mild steel, in particular, delivers the right combination of physical durability and minimum container interaction. Rarely, at a customer’s specific request, we have organized specialty packaging for high-purity applications, where even minor traces of metal ions could interfere in downstream reaction steps. These strict requests come mainly from pharma and electronics fields, and we support them with dedicated filling lines and analytical sign-off.

    What Sets 3,3-Dimethylbutyryl Chloride Apart From Other Acid Chlorides

    Technicians who handle a full portfolio of acid chlorides soon appreciate why 3,3-dimethylbutyryl chloride draws steady demand. Unlike acetyl chloride or benzoyl chloride, it carries a more hindered moiety, which can block unwanted side reactions. This comes into play especially in peptide coupling and amidation steps, where a more selective acylation means a cleaner yield at the next stage. Years of batch records show that yields in peptide synthesis hold consistently strong with this reagent, thanks to these steric factors.

    From a safety standpoint, the product demands respect—like any acid chloride—but it emits less pungent odor than some more volatile relatives. Handlers with experience in propionyl or butyryl chlorides recognize the distinct, less irritating fumes when decanting or actuating pumps. Our safety records and air monitors back up the reduced respiratory complaints from plant staff over time.

    On the analytical bench, it distinguishes itself by having a cleaner gas chromatographic profile after proper distillation. Many other acid chlorides, particularly those with less branched carbon chains, persistently generate minor byproducts even under optimal synthesis conditions. We get fewer complaints from QA staff auditing our Certificates of Analysis on this reagent, since side reactions drop and the material maintains sharp, narrow peaks even after long-term storage, so long as proper controls are in place.

    Manufacturing Process—A Balancing Act of Safety and Efficiency

    Producing 3,3-dimethylbutyryl chloride at scale means more than just running a reaction and draining a reactor. Over time, we have refined both our reaction control and our off-gas handling. Acid chlorides as a class generate HCl as a byproduct, and for this molecule, we route vent streams through scrubbers to neutralize acid gases, protecting both air quality and worker safety. Our maintenance records and stack emissions reflect the benefit of this disciplined approach.

    The process starts with careful lot selection of starting isovaleric acid. Impurities in the acid, especially higher boiling alcohols, can introduce color bodies or tar. Any color drifting into the final product spells trouble for high-value syntheses downstream. Thionyl chloride is the chlorinating agent of choice, as it generates gaseous byproducts that we can clean up efficiently. Stirring, jacket temperature, and vacuum draw must all be precisely tuned. Too hot or too fast, and we risk excess hydrolysis; too cold, and the reaction never completes in reasonable time. Years of working at the control panel, listening for changes in pump speed or condenser draw, teach lessons formulas don’t cover.

    Quality Control Practices Forged from Experience

    Every drum produced passes a round of analytical tests before we release it. Our staff use gas chromatography-mass spectrometry, not just because GMP documents call for it, but to confirm the absence of unexpected chlorinated side products that sometimes slip through less rigorous processes. We also include Karl Fischer titration to pick up even trace water. This makes a real difference: we’ve seen competitors’ batches with just a touch too much water set off runaway reactions or spew HCl into sensitive reactors.

    We go through the common hazard points before sign-off, since any off-odor, hint of cloudiness, or drift from water-white clarity spells trouble. Staff stories about times when undetected hydrolysis or trace amines caused a batch recall keep us alert. Each shipment heads out only after sign-off by both a seasoned operator and an analytical chemist; it’s a two-person protocol that pays off.

    End Users Benefit from Manufacturing Know-How

    We have noticed our clients rarely call to ask about the CAS registry or boiling point; their focus is on practical factors—how easy is it to transfer the liquid, how stable is it in storage, will it react consistently in a scaled-up process? Over years of manufacturing these specialty chemicals, we’ve sent technical teams to customers to troubleshoot blocked filters, slow reactions, and overheating due to reagent impurity. Each visit teaches us more about real-world needs than a specification sheet ever could.

    Customer preference between acid chlorides often boils down to the clean reaction profile and manageable handling risks. This product’s less volatile nature means reduced odor and less venting equipment, while its reactivity allows for selectivity in advanced organic synthesis that other, simpler acid chlorides can't provide. End users in pharma and agrochemicals appreciate that extra degree of control, and plant operators tell us it leads to less rework and wasted time.

    Regulatory Impact and Environmental Compliance

    Among acid chlorides, all attract scrutiny for potential emissions and waste hazards. Over the past decade, regulations on volatile organic compounds and acidic waste handling have grown tighter. Early on, we adopted close-system handling and continuous emission monitoring, long before most requirements. Stack data show how efficiently modern scrubbers capture acid fumes, and we maintain open records with local regulators to build trust and transparency.

    Wastewater streams from our plant are treated to manage chloride content and acidity before discharge, applying both neutralizing stations and in-line testing. Formerly, older facilities might have lost track of chloride release, but our daily pH logs and salt balance reflect a tight, accountable operation. This not only protects the local environment but also reassures clients with strict green chemistry requirements. For a product that can hydrolyze easily, the need for secure packaging and specialized disposal highlights the operational realities that don’t always show up in marketing literature.

    Technical Support Born from Real-World Problems

    Each production campaign sharpened our staff’s trouble-solving instincts. We’ve gotten calls from customers frustrated by filter blockage, resin fouling, or sluggish reactivity. Many times, the root issue traces back to a subpar charging protocol, or a container that let in just enough moisture to kill yield. We guide those customers with recommendations backed by test results, not abstract guidelines.

    We share batch-specific handling protocols, storage tips—like using nitrogen blankets and low-permeability container linings—and firsthand experience to help customers maintain quality all the way to the point of use. There’s no substitute for lived experience in chemical manufacturing. Years on the plant floor taught us that the devil sits in the delivery details.

    Continuous Improvement as a Cultural Value

    While the chemistry behind 3,3-dimethylbutyryl chloride hasn’t changed much in decades, our commitment to reducing batch variability, preventing contamination, and anticipating regulatory shifts demands constant evolution. Feedback cycles between our production team, our analytical staff, and end users keep our process nimble. Implementation of lean manufacturing strategies, enhanced automation, and improved real-time quality monitoring aren’t just buzzwords for us—every improvement gets stress-tested in daily operation. If an idea cuts down on cycle time, reduces operator exposure, or shaves a few tenths of a percent off impurity levels, we invest the time and capital to make it routine.

    Best Practices Drawn from the Manufacturing Floor

    Certain lessons about 3,3-dimethylbutyryl chloride stick with anyone who works with it over time. Handle only in dry, inert environments and use compatible lined drums. Replace drums showing even small dents, since stress points can concentrate hydrochloric acid leaks that go unnoticed until too late. Proactively monitor product clarity and odor, and never ignore complaints about off-spec batches—these always signal underlying problems.

    We’ve learned that prompt corrective actions on returned drums, inconsistent analyses, or delayed deliveries prevent bigger headaches down the line. Regular cleaning and calibration of storage and transfer lines might seem tedious, but experience proves it extends both equipment lifespan and end-product stability. Even plant veterans can get caught out if procedures drift from documented best practice, so a culture of accountability permeates each shift.

    Collaboration With Customers Drives Better Outcomes

    Delivering a specialty chemical like 3,3-dimethylbutyryl chloride is about more than just filling containers. Supply bottlenecks, changing demand patterns, and unforeseen logistical issues crop up every season. We keep close communications with material planners and procurement teams to smooth out forecasts and help customers manage tight deadlines. Relying on honest dialogue and long-term relationships means customers trust our recommendations—and in a pinch, reach out for help navigating both expected and unexpected issues.

    Our aim has always been to combine chemical expertise with practical agility. When customers run into issues like unexpected HCl emissions on opening, we trace the root cause through our batch analytics, revise packaging protocols if needed, and supply technical data to reassure process safety officers. In a tight supply environment, we can flex production campaigns or expedite shipments so users avoid costly shutdowns or project delays.

    Final Thoughts From the Plant Floor

    There’s an art as well as a science to running a specialty chemical business. 3,3-Dimethylbutyryl chloride production covers the spectrum—from raw material sourcing, reaction control, and analytical sign-off to ongoing support for the finished product’s end user. All the best practices, quality checks, and customer feedback loops get built into an operation focused on meeting real industry needs. Our history of producing this specific acid chloride stretches back years, and the collective know-how of staff across roles and shifts makes the difference between average product and the gold standard customers come back for.

    We’ve learned, sometimes the hard way, that consistency, service, and a commitment to continual improvement anchor long-term trust. In the end, the quality of 3,3-dimethylbutyryl chloride reaching a customer’s loading dock reflects not only chemistry, but every lesson and adjustment our teams have made along the way. For every end user demanding performance and reliability, our day-to-day experience as a true manufacturer shapes the product they receive.