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3-Hydroxy-2-Butanone

    • Product Name 3-Hydroxy-2-Butanone
    • Alias Acetoin
    • Einecs 202-315-6
    • 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
    VTB
    Specifications

    HS Code

    891888

    Chemicalname 3-Hydroxy-2-Butanone
    Othernames Acetoin
    Molecularformula C4H8O2
    Molarmass 88.11 g/mol
    Casnumber 513-86-0
    Appearance Colorless to pale yellow liquid
    Odor Buttery
    Meltingpoint 15 °C
    Boilingpoint 148-149 °C
    Density 1.014 g/cm3 (20 °C)
    Solubilityinwater Miscible
    Refractiveindex 1.422
    Flashpoint 54 °C (closed cup)
    Pubchemcid 179
    Unnumber UN 3142

    As an accredited 3-Hydroxy-2-Butanone factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Amber glass bottle, 500 mL, with screw cap; labeled with chemical name, hazard symbols, concentration, and safety precautions.
    Shipping 3-Hydroxy-2-Butanone is typically shipped in tightly sealed containers, protected from light, moisture, and ignition sources. It should be handled as a flammable liquid, with labeling compliant to GHS/OSHA standards. Transportation is usually by ground or air, following all relevant hazardous material regulations to ensure safety and compliance.
    Storage **3-Hydroxy-2-butanone** should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from heat sources, sparks, or open flames. Protect from direct sunlight and incompatible materials such as strong oxidizers and acids. Store at room temperature, and ensure proper labeling. Follow all relevant safety guidelines and regulations for chemical storage.
    Application of 3-Hydroxy-2-Butanone

    Applications of 3-Hydroxy-2-Butanone in Industrial Manufacturing

    3-Hydroxy-2-butanone, recognized for its functional diketone structure and distinct organoleptic profile, plays a critical role in several specialized industrial manufacturing sectors. Below, we detail its specific application channels, compliance requirements, technical usage ratios, principal process stages, and the ultimate products where it adds measurable technical value.

    1. Food Flavor Formulation for Dairy and Bakery

    Food processors leverage 3-hydroxy-2-butanone as an essential aroma and taste ingredient, especially to impart buttery notes in dairy products, bakery fillings, and microwave popcorn. Its unique flavor profile requires close alignment with food safety authorities and precise metering within complex recipes to ensure both stability and robust masking of off-flavors during high-temperature processing.

    Industry compliance standards

    • Food Chemicals Codex (FCC) specification
    • EU Regulation (EC) No 1334/2008 on flavorings
    • U.S. FDA 21 CFR 172.515 – Flavoring agents and related substances
    • GB 2760—Chinese Food Additive Standards

    Typical usage ratio

    • 20–100 ppm in finished product, adjusted based on fat content, thermal process, and regulatory maximum residue limits

    Downstream process integration

    • Added during late mixing stage or post-pasteurization in dairy and ready-to-eat baked goods—critical for flavor retention through to the end product

    Final product types

    • Margarine and butter spreads
    • Cream-based confections
    • Buttery cookies and cakes
    • Ready-to-eat popcorn snacks

    2. Pharmaceutical Intermediate for API Synthesis

    Chemical and pharmaceutical API manufacturers utilize 3-hydroxy-2-butanone as a key synthon in multi-stage synthesis pathways for several active pharmaceutical ingredients. The compound’s controlled reactivity enables efficient carbon–carbon bond formation, which is important for producing fine chemicals such as certain antitubercular and anti-infective drugs where batch traceability and GMP adherence are strict requirements.

    Industry compliance standards

    • ICH Q7 – Good Manufacturing Practice for Active Pharmaceutical Ingredients
    • European Pharmacopoeia monographs
    • U.S. FDA cGMP Guidelines
    • Chinese Pharmacopoeia Volume IV – Chemical Intermediates

    Typical usage ratio

    • Stoichiometric to 3-fold molar excess, contingent on pathway yield optimization and downstream purification criteria

    Downstream process integration

    • Incorporated during condensation or acylation process stages, often in stepwise synthetic schemes producing key pharmaceutical precursors

    Final product types

    • Intermediate for anti-tuberculosis agents such as ethambutol
    • Building block for antibiotics and anti-infective agents
    • Synthetic intermediates for vitamin analogs
    • Precursors to select active pharmaceutical ingredients

    3. Fine Fragrance and Perfume Compounding

    Manufacturers in the fragrance sector employ 3-hydroxy-2-butanone to develop rich, creamy, and volatized notes in both mass-market and premium perfume bases. Its performance during fragrance fixation and interaction with top and middle notes is precisely evaluated under IFRA and REACH guidelines to ensure compliance and stability across different solvent systems and dispersions used in personal care formats.

    Industry compliance standards

    • International Fragrance Association (IFRA) Standards
    • EU REACH Regulation (EC) 1907/2006
    • Cosmetic Ingredient Review (CIR) Recommendations
    • Japanese Standards of Quasi-Drug Ingredients (JSQI) for personal care

    Typical usage ratio

    • 0.05–0.5% in fragrance oil concentrate, with precise adjustments for product positioning and geographic regulatory limits

    Downstream process integration

    • Introduced during oil blending prior to initial aging, ensuring complete solubilization with other volatile and fixative components

    Final product types

    • EDT (Eau de Toilette) and EDP (Eau de Parfum) designer lines
    • Functional fragrance compounds for soaps and personal washes
    • Room and fabric freshener formulations
    • Specialty aroma chemicals for air care applications

    4. Specialty Chemical Synthesis for Agrochemical Intermediates

    Leading agrochemical manufacturers use 3-hydroxy-2-butanone as an active intermediate in synthesizing select crop protection agents and pheromone mimics. Close in-process control manages both purity and reaction exotherms. The substance’s efficacy as a ketone building block supports high-yield production of downstream formulation actives and enables cost-efficient multi-ton scale campaigns compliant with national environmental and workplace safety regulations.

    Industry compliance standards

    • FAO/WHO International Code of Conduct on Pesticide Management
    • EU Regulation 1107/2009 concerning the placing of plant protection products on the market
    • U.S. EPA Pesticide Registration Manual: Chapter 2 – Labeling Requirements
    • China National Standards on Agrochemical Manufacturing (GB and GB/T series)

    Typical usage ratio

    • Varying 1.2–1.6 molar equivalents relative to main reactant, subject to conversion rates and catalyst system used

    Downstream process integration

    • Charged during staged reaction phases—primarily in carbonylation, acylation, or aldol synthesis units within agrochemical intermediate plants

    Final product types

    • Herbicide intermediates for acetanilide and triazine classes
    • Insect pheromone precursors for integrated pest management
    • Fine chemicals for fungicide synthesis
    • Seed treatment and plant growth regulator intermediates

    5. Pharmaceutical Excipients for Injectable Formulations

    In the pharmaceutical injectable market, formulators use ultra-pure 3-hydroxy-2-butanone in carefully controlled excipient systems as a stabilizing and tonicity-modifying agent for some sensitive biologics and water-soluble compounds. Stringent control over trace impurities and bioburden is required, demanding full compliance with international pharmacopoeia and injectable excipient regulations to ensure safety in parenteral delivery.

    Industry compliance standards

    • USP-NF (United States Pharmacopeia–National Formulary) injectable excipient monographs
    • European Pharmacopoeia 2.1.4 – Excipients for Parenteral Use
    • WHO Guidelines on Sterility and Pyrogen Testing
    • GMP (Good Manufacturing Practices) for Sterile Products

    Typical usage ratio

    • 0.1–1.0% w/v concentration, tailored to osmolarity and compatibility studies for each drug product

    Downstream process integration

    • Dosed during early aqueous blend stages, followed by sterile filtration and aseptic filling in injectable manufacturing suites

    Final product types

    • Parenteral nutrition formulations
    • Lyophilized biologic drugs
    • Reconstituted therapeutic injectables
    • Diagnostic injection solutions

    6. Fine Chemical Raw Material for Flavor and Fragrance Intermediates

    Producers of aroma chemicals and functional flavoring compounds incorporate 3-hydroxy-2-butanone into advanced synthesis lines to yield high-purity lactones, acetoin derivatives, and natural-identical flavorants. The substance enables the construction of flavor notes prevalent in fruit, dairy, and caramel profiles, requiring precise quality testing and traceability in accordance with global flavor ingredient standards.

    Industry compliance standards

    • ISO 22000 Food Safety Management Systems
    • FEMA GRAS (Generally Recognized as Safe) approval for individual flavors
    • EU Flavouring Regulation (EC) No 1334/2008
    • Japanese Food Additive Regulations (MHLW Notification No. 120)

    Typical usage ratio

    • Reactant usage at 1:1 or excess equivalence, controlled by conversion and selectivity of the targeted derivative, measured by GC or HPLC analysis

    Downstream process integration

    • Feeds into fractional distillation, hydrogenation, or enzymatic transformation stages for the production of high-purity intermediates

    Final product types

    • Cyclic esters for fruit and dairy flavoring
    • Acetoin-based caramel and buttery flavor compounds
    • Specialty aroma compounds for beverages and desserts
    • Food-grade solvents and carriers
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    Certification & Compliance
    More Introduction

    3-Hydroxy-2-Butanone: Practical Utility Backed by Solid Manufacturing

    A Practical Introduction from Experience on the Production Line

    After many years refining our processes, we find there’s no replacement for first-hand control over the quality of basic chemicals. 3-Hydroxy-2-Butanone, commonly known as acetoin, stands out among the mid-chain hydroxy ketones for both reliability and versatility—which is why it’s earned a regular home on the production schedule. Our facilities work with this transparent liquid day in and day out, handling drums and tanks with precision that only practice brings.

    Specifications Reflecting Real-World Output

    Our standard model offers high purity, usually exceeding 99%. Internal testing batches have hit an average density of approximately 1gm/cm3 at ambient storage, and a boiling point that gives safety and handling teams adequate leeway in most standard blending scenarios. Over typical runs, we’ve kept residual solvents and moisture to a minimum, keeping the product clean for downstream applications. This gives R&D departments reliable starting material, without the unknowns that come from less tightly controlled supply.

    Where 3-Hydroxy-2-Butanone Finds Purpose

    Once customers get a feel for this molecule, they rarely swap it out. In the flavor and fragrance sector, formulators reach for it to round out buttery and creamy notes, using its gentle aroma to boost authenticity while avoiding overpowering side-products. Its mildness allows subtlety in product development. Fermentation and biotechnology fields employ it as a precursor in the synthesis of a variety of compounds, appreciating predictable biocompatibility and the easy integration in stepwise enzyme reactions.
    We regularly hear from clients in the pharmaceutical and fine chemicals domains who need acetoin's unique reactivity in acyloin condensation or as an intermediate, especially when other hydroxy ketones introduce too much volatility or side reactivity. In solvents and coatings, this molecule brings the advantage of mild polarity without the more aggressive behavior seen in shorter or branched analogues.
    In agriculture, we note increased interest from companies designing environmentally sound formulations. Here, 3-Hydroxy-2-Butanone does its part as a flavor precursor or plant growth stimulant, slipping seamlessly into production without complicated process controls.

    Manufacturing Consistency: Learning From Our Own Line

    Our experience shows that the best product always comes from equipment run by people who understand both the chemistry and the mechanics. We equip our reactors with sensors and run careful distillation columns to draw off consistent fractions, which keeps the solvent profile clean and limits batch-to-batch drift. Workers on the floor track odor, viscosity, and minor impurities—the kind of details automation sometimes misses. Problems with raw material feeds or temperature control show up quickly, letting us address them before a flawed batch develops.
    By managing every run ourselves instead of relying on contract packing or outsourced purification, we’ve learned the sorts of cycle adjustments that protect against minor climate or supply variability. This involvement sharpens our ability to deliver material that fits tightly with downstream processes. Over the years, waste reduction at every stage—from solvent recovery to reactor cleaning—has not only cut costs but has also kept operators safer, and waste management regulators satisfied.

    Comparisons with Other Hydroxy Ketones and Alternatives

    Lab and processing teams using both 3-Hydroxy-2-Butanone and closely related chemicals like diacetyl or hydroxyacetone can testify to the differences that become obvious after a few production cycles. Diacetyl, another C4 carbonyl compound, provides a more intense buttery aroma, but carries flavor safety concerns as well as potential for off-odors if dosed above threshold. We have observed that diacetyl applications may require extra care in both blending and exposure control, adding cost and complexity which isn’t required with acetoin.
    Hydroxyacetone offers another comparison: its ketone group reactivity fits certain pathways, but its strong odor usually limits use in flavors and fragrances. By contrast, acetoin’s soft smell and predictable liquid handling make it easier to streamline operations, especially in environments where air handling and odor control add significant overhead.
    Technicians in coatings and polymer chemistry sometimes ask about using acetone or methyl ethyl ketone as alternatives. With these, volatility and flammability grow, and the lack of a hydroxyl group robs the final matrix of some beneficial interactions. Over numerous customer integrations, we rarely see successful direct swaps—either properties diverge or safety compliance changes too much for straightforward replacement. From experience, sticking with 3-Hydroxy-2-Butanone where its unique combination of hydroxyl and carbonyl reactivity is required typically prevents setbacks further along in production.

    Solving Challenges on the Factory Floor

    Every manufacturer faces hiccups—condensation, heat transfer limitations, or unexpected shifts in base material analysis. These are not theoretical problems; operators here have dealt with blocked condenser lines from residual polymerization, tanks that show temperature spikes during fast charge, and the inevitable learning curve of scaling from pilot runs to multi-ton charges.
    Examples from a recent production run show the advantage of direct manufacturing knowledge. We watched a sudden uptick in aldehyde content in a batch cue a review of upstream fermentation feeds. Once we pinpointed the issue—a subtle microbial contamination—we adjusted the sterilization routine for raw sugars, protecting purity without over-treating later. The changes didn’t just save the batch; they improved yield for the month.
    That hands-on process control—targeting issues, tweaking equipment settings, diagnosing minute impurities—pays dividends in final product uniformity. Instead of chasing specification sheets or waiting for third-party labs, our teams often catch and fix minor issues before they evolve into batch failures or customer complaints. This direct involvement proves crucial in industries where precision can mean the difference between success and wasted material.

    Connecting Regulatory Expectations with Real Production

    Batch records here track everything from temperature excursions to solvent levels. Over time, we’ve aligned traceability with demands from food and pharmaceutical regulators, documenting each critical control point from sourcing to shipping. Technicians maintain logs by hand and electronically, cross-referencing deviations with maintenance schedules or environmental shifts. This attention to record-keeping prevents issues during audits, simplifies batch recalls, and helps with process optimization.
    We’ve noticed that some suppliers struggle to meet these requirements, cutting corners through diluted feeds or insufficient documentation. As a primary source, we feel the difference comes from ownership of both the product and the process. Delivering pure, high-quality 3-Hydroxy-2-Butanone isn’t a job managed by remote offices; it grows from day-to-day interactions on the plant floor. That’s where regulatory demands are best met—not with paperwork alone but by integrating standards into each step of manufacturing.
    Our plant teams participate in trainings, stay familiar with regulatory shifts, and work closely with compliance officers who bring years of field experience, not just certifications. This builds a culture where excellence is not just a requirement, but a matter of daily practice. We invite peer inspectors and sometimes host visits from customers’ own quality departments, further improving visibility and fostering trust.

    Environmental Considerations: Real Impact in Real Time

    Today, every kilogram of chemical shipped faces scrutiny for environmental impact. On the production floor, we’ve implemented closed-loop solvent recovery for each run involving acetoin, reducing fugitive emissions and minimizing both regulatory and practical risk. What this means in working terms is fewer interruptions from environmental controls, fewer headaches during permitting, and less lost product over the course of a year.
    Our wastewater streams undergo regular characterization, with excess organic carbon captured through bio-treatment systems. Employees bring up new ideas for residual reuse—recently, we tested fermentation sidestream recycling for in-house cleaning rather than outside disposal, which saved both money and landfill burden.
    Seasoned operators know that environmental management means more than isolated green initiatives. It runs through raw material choices, utility use, packaging selection, and recovery targets. By auditing each link in our process, we achieve incremental gains. We share these strategies with partner firms, looking to create a consistent baseline of responsible manufacturing through the industry.

    Quality That Grows With Long-Term Relationships

    We’ve watched customers evolve with us. Decade-long partnerships have allowed both sides to tighten requirements and adapt to shifting priorities, whether new purity specifications for medical uses or adjustments in packaging to better fit automated filling lines. This sort of long-term collaboration only happens when manufacturers take responsibility for their product’s performance in real-application settings.
    We visit customer R&D centers to collect feedback and review missed opportunities or new technical barriers. One flavor house running into solubility challenges during beverage formulation prompted us to tweak drying and post-processing routines, leading to better performance under high-shear mixing. We’ve collaborated with polymer chemists to explore new catalysts that play well with 3-Hydroxy-2-Butanone, transforming production cycles downstream.
    Over time, our direct contact between plant chemists and customer formulation specialists builds institutional knowledge. This constant loop of challenge, feedback, and improvement lifts benchmarks—not just for us, but for the wider field.

    Addressing Safety in a Real-World Context

    Working around chemicals like acetoin isn’t just about following protocols printed on a safety sheet. Our team receives real-world safety training: spill drills, first responder walk-throughs, and regular reviews by industrial toxicologists. Operators identify and manage minor leaks, upgrade PPE based on field reports, and help review air quality data from detailed sampling inside the facility.
    Over years of daily handling, employees understand which precautions work—ventilation, regular tank checks, PPE fit tests—and which are better reserved for laboratory contexts. We find that a hands-on approach, reinforced through constant engagement, goes farther to prevent workplace incidents than rules alone.
    On the plant floor, this means every operator develops a healthy respect for basic safety procedures—avoiding shortcuts, immediate reporting of anything out of the ordinary, and ongoing dialogue with the health and safety team. Commitment to safety drives continuous investment in monitoring, protective gear, and training, benefits that flow directly into the consistency and reliability of our finished product.

    Benefits Beyond the Molecule

    3-Hydroxy-2-Butanone does more than provide value as an isolated molecule. Over years in the industry, we’ve witnessed its utility across domains: blending smoothly in bakery flavors, providing the right functional group for pharmaceuticals, supporting biodegradable solvents, and even serving as a renewable building block when sourced from green fermentation.
    We view this product not simply as a commodity—each kilogram embodies thousands of hours of accumulated production knowledge, process optimization, and troubleshooting. Our accumulated input from customers stretches from food safety concerns to compliance headaches in export documentation. All this knowledge swirls into the quality of each outbound shipment.
    Price shocks, raw material volatility, and regulatory shifts are part of the experience. By operating as the originator, not a distant supplier, we buffer our customers from many of these market waves with flexible batch scheduling and frequent, honest updates. This proactive stance marks the difference between mere supply and full partnership.

    Looking Ahead: How 3-Hydroxy-2-Butanone Evolves With Industry Trends

    Markets change with shifts in consumer preference, legislation, or advances in technology. Demand can jump when regulations require safer flavoring agents or production pivots away from legacy solvents to greener alternatives. We monitor trends in plant-based and eco-friendly formulations, collaborating with developers looking to lessen environmental load. Our fermentation-based synthesis routes offer an established lower-impact option for companies rallying behind sustainability.
    Future applications may stretch beyond today’s common roles. Research projects have approached us with ideas for advanced polymerization initiators, green adhesive formulations, or even custom synthesis of upcycled intermediates. We vet each opportunity through practical lab runs and simulated scaling, weighing both promise and real-world hurdles.
    The confidence that customers and partners place in our acetoin stems from our experience, not from claims on paper. Each container shipped represents the ongoing effort of a dedicated team guided by practical know-how and honest dialogue with the field. In the ever-changing universe of basic chemicals, this grounded, experienced-driven approach helps everyone build better products—and meets whatever challenge tomorrow brings.