2,3-Butanediol

    • Product Name: 2,3-Butanediol
    • Alias: Biolene
    • Einecs: 203-473-3
    • Mininmum Order: 1 g
    • Factroy Site: Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry: admin@ascent-chem.com
    • Manufacturer: Ascent Petrochem Holdings Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    561327

    Cas Number 513-85-9
    Molecular Formula C4H10O2
    Molar Mass 90.12 g/mol
    Appearance Colorless liquid
    Odor Low, sweet odor
    Melting Point -35 °C
    Boiling Point 180–184 °C
    Density 0.899 g/cm³ at 20 °C
    Solubility In Water Miscible
    Flash Point 93 °C
    Refractive Index 1.432 (at 20 °C)
    Vapor Pressure 0.1 mmHg at 25 °C

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

    Packing & Storage
    Packing The 2,3-Butanediol is packaged in a 500 mL amber glass bottle with a secure screw cap, labeled with hazard information.
    Shipping 2,3-Butanediol is typically shipped in sealed, chemical-resistant containers such as drums or intermediate bulk containers (IBCs). It should be stored in a cool, well-ventilated area, away from incompatible substances. During transport, handle with care to prevent leaks or spills, and comply with relevant safety and regulatory requirements.
    Storage 2,3-Butanediol should be stored in a tightly closed container in a cool, dry, and well-ventilated area, away from direct sunlight, heat sources, and incompatible materials such as strong oxidizing agents. Keep the storage area clearly labeled. Ensure the chemical is stored at room temperature and protected from moisture. Follow standard safety procedures and consult the material safety data sheet (MSDS) for detailed guidance.
    Application of 2,3-Butanediol

    Applications of 2,3-Butanediol in Industrial Manufacturing

    2,3-Butanediol is a high-purity chemical intermediate with significant value in multiple industrial segments. As a manufacturer, we supply this raw material directly to downstream processing lines requiring strict batch traceability and compliance. Below, we detail several primary industrial applications with specific compliance, dosage, processing, and end-use information.

    1. Biodegradable Polymer Production

    In polybutylene succinate (PBS) and related biodegradable polyester manufacture, processors use 2,3-butanediol within the polycondensation step to influence polymer flexibility and improve crystallinity. Its diol functionality allows integration alongside 1,4-butanediol in the transesterification reaction, supporting bio-content claims and contributing to lower-migration material profiles required for food-contact plastics. Adoption centers on plants transitioning away from petroleum diols to partially renewables. Quality, impurity, and process controls must be validated to meet converter and regulatory requirements for compostable goods.

    Industry compliance standards

    • EN 13432 (compostable packaging, EU)
    • US FDA 21 CFR 177.1810 (polyester polymers for food contact)
    • ISO 17088 (biodegradable plastics)
    • China GB/T 38082 (biodegradable plastic bags)

    Typical usage ratio

    • 3% – 15% molar substitution for total diol feed in PBS and PBAT synthesis, varied by desired flexibility and crystallinity.

    Downstream process integration

    • Direct addition to esterification/polycondensation reactor with diacid/diester stream.
    • Requires monitored dosing to maintain molecular weight targets and batch uniformity.

    Final product types

    • Biodegradable food trays and cutlery
    • Compostable agricultural films
    • Disposable bag stock
    • Bio-based rigid packaging

    2. Specialty Solvent for Agrochemical Formulations

    In agrochemical manufacturing, formulators select 2,3-butanediol as a carrier and solubilizer for certain pesticide actives, adjuvants, and seed treatment products where its medium polarity improves active agent dispersion and shelf stability. With low acute toxicity and controlled volatility, it supports reduced environmental impact initiatives versus conventional solvents. Composition documentation and MSDS requirements apply, especially for export products, where residue limits and process validation ensure downstream farmer and environmental safety compliance.

    Industry compliance standards

    • OECD Guidelines for Testing of Chemicals
    • European Regulation (EC) No 1107/2009 (placing plant protection products on the market)
    • US EPA FIFRA standards (pesticide active and inert ingredient registration)
    • China GB 2763 (maximum residue limits for pesticides in food)

    Typical usage ratio

    • 5% – 25% w/w in final liquid concentrate or microemulsion, adjusted per active ingredient solubility and label limits.

    Downstream process integration

    • Blending with active agents during formulation tank stage, typically pre-emulsification, followed by filtration and packaging.
    • QC sampling and retention per batch prior to drum or IBC transfer.

    Final product types

    • Pesticide microemulsions
    • Seed coating dispersions
    • Fungicide suspensions
    • Herbicide adjuvant blends

    3. Intermediate for Synthetic Rubber (Butadiene Copolymers)

    At polymer-grade facilities, 2,3-butanediol undergoes dehydration to yield butadiene in processes where traditional extraction from petrochemical streams is less feasible or demanded by high-purity elastomer lines. The resulting butadiene monomer feeds styrene-butadiene rubber (SBR) and acrylonitrile butadiene styrene (ABS) copolymer synthesis in tire, engineering plastic, and footwear applications. Units supplying medical and food-grade elastomers enforce strict incoming diol quality and traceability protocols to ensure no unreacted glycol residues in cured articles.

    Industry compliance standards

    • ASTM D2000 (classification of rubber products)
    • EU REACH regulation (polymeric intermediates and residual monitoring)
    • ISO 9001 and ISO 14001 (quality & environmental standards for synthetic rubber plants)
    • US FDA 21 CFR 177.2600 (elastomers in repeated-use applications)

    Typical usage ratio

    • Conversion feeds utilize 90%+ purity diol in continuous processes; efficiency targets 0.8–0.9 mol butadiene per mol diol with <2% carryover.

    Downstream process integration

    • Catalytic dehydration reactor feed, typically pre-evaporation and purification prior to monomer storage for subsequent copolymerization.

    Final product types

    • Styrene-butadiene rubber (SBR) compounds
    • Acrylonitrile-butadiene-styrene (ABS) resin pellets
    • Rubber rollers and seals
    • Automotive tire sidewalls

    4. Precursor in Fragrance and Flavor Synthesis

    Specialty chemical producers incorporate 2,3-butanediol as a key reactant in producing methyl ethyl ketone (MEK), acetoin, and diacetyl—core aroma compounds for food, beverage, and fragrance industries. Food contact pathways follow high transparency rules, including allergen screening, residual solvent analysis, and batch monitoring. Downstream users expect documentation verifying compliance with food additive legislation, in addition to flavor ingredient purity and identification protocols aligned with global trade and consumer safety standards.

    Industry compliance standards

    • US FDA 21 CFR 172.515 (synthetic flavoring substances and adjuvants)
    • EU Regulation (EC) No 1334/2008 (flavourings and food ingredients with flavouring properties)
    • JECFA food additive monographs
    • ISO 22000 (food safety management systems for manufacturing sites)

    Typical usage ratio

    • Up to 25% w/w as precursor for targeted aroma ingredient batches, tuned according to desired flavor intensity and conversion efficiency.

    Downstream process integration

    • Reacted in oxidation or fermentation vessels followed by downstream purification and concentration for essence blending.

    Final product types

    • Diacetyl (buttery flavor ingredient)
    • Acetoin (cream note for bakery/fine food)
    • Methyl ethyl ketone for fragrance blending
    • Custom aroma formulation intermediates

    5. Cryoprotectant Blend for Biopharmaceutical Logistics

    2,3-Butanediol finds application in advanced cryoprotectant mixtures for cell and tissue preservation in biopharmaceutical supply chains. Its unique colligative properties allow thermal stabilization during rapid freezing and thawing, minimizing cell lysis and osmotic shock in sensitive biologicals. GMP facilities rigorously validate each batch for endotoxin, residual solvent, and bioburden, as logistics providers demand comprehensive COA and full batch genealogy in case management audits at receiving sites.

    Industry compliance standards

    • USP <1046> (cell viability assays)
    • European Pharmacopoeia 5.2.2 (biological safety of materials)
    • ICH Q7 (GMP for active pharmaceutical ingredients)
    • ISO 20399 (bioprocessing logistics)

    Typical usage ratio

    • 2% – 8% v/v in final cryopreservation buffer systems; actual concentration based on cell type and freezing protocol validation.

    Downstream process integration

    • Mixed with other cryoprotective agents (e.g., DMSO, glycerol) prior to cell suspension, followed by controlled rate freezing and white-room filling.

    Final product types

    • Cell therapy shipping buffers
    • Cryogenic stem cell formulations
    • Tissue preservation medium
    • Biobanking storage solutions

    6. Plasticizer Production for Cellulose-Based Films

    Manufacturers of cellulose acetate and cellophane films utilize 2,3-butanediol as a reactive or semi-volatile plasticizer to enhance film flexibility, reduce brittleness, and modify barrier properties. Its integration helps meet regulatory demands for direct and indirect food contact materials, and processors calibrate addition according to target modulus and migration testing. Only food-approved grades may enter lines supplying high-clarity, low-odor transparent films for global packaging and industrial conversion sectors.

    Industry compliance standards

    • US FDA 21 CFR 177.1200 (cellophane food contact films)
    • EU Regulation (EU) No 10/2011 (Plastic Materials and Articles in contact with Food)
    • Japan Food Sanitation Law (Positive List for Apparatus, Containers and Packaging)
    • ISO 9001 (process validation for packaging conversion facilities)

    Typical usage ratio

    • 3% – 12% by polymer mass, determined in accordance with required tensile strength and regulatory tested migration limits.

    Downstream process integration

    • Incorporated in batch mixer prior to film extrusion or casting; real-time process viscosity checks performed for each lot.

    Final product types

    • Food packaging cellophane
    • Pharmaceutical blister films
    • Industrial release liners
    • Sustainable transparent wraps

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    Certification & Compliance
    More Introduction

    Exploring 2,3-Butanediol: A Manufacturer’s Viewpoint on Value, Quality, and Application

    What 2,3-Butanediol Means to Real-World Production

    Factories tend to share a few common pains: material inconsistency, fluctuating prices, and headaches due to unreliable supply. Over our years of producing 2,3-Butanediol, we’ve seen firsthand how consistency in this product’s characteristics translates directly to smoother customer operations. Simply put, 2,3-Butanediol offers qualities difficult to match with near-substitutes, especially for customers aiming for dependable performance in downstream processes. This holds true in both established markets and newer fields like green chemistry, where performance and traceability matter just as much as cost.

    How Our Approach Shapes the Product’s Core Features

    Crude materials and rushed batches lead to more than lost orders — they affect end results and market trust. In the production line, we constantly review the purity and water content of every shipment. We typically offer two grades: a high-purity model with water content below 0.2% and technical grade designed for less sensitive uses. Each batch must pass in-house GC analysis and targeted checks for key residuals, like methyl ethyl ketone or acetoin. By sticking to a routine of strict process controls, the variability from batch to batch drops, and so do issues for formulators and blenders.

    When batches stray from spec, they’re not sold. This focus helps downstream partners reduce their own quality control labor. Purity can look like a side note on a spec sheet, but in action, it means less foaming during polymerization, stronger bonds in polyurethane foams, and fewer reworks in coatings. Over time, buyers see that the value of consistently high-purity 2,3-Butanediol goes well beyond a single order and pays for itself in reduced risk.

    Understanding How 2,3-Butanediol Stands Apart

    Chemically, 2,3-Butanediol belongs to a group of diols, but its two hydroxyls on adjacent carbon atoms set it apart from isomers like 1,3-Butanediol. In most production lines, this configuration supports faster reactivity with isocyanates, helping speed up cure times. For the manufacturers of unsaturated polyester resins and plasticizers, this enhanced reactivity allows for shorter turnaround and tighter process tolerances. 1,3-Butanediol, by comparison, doesn’t match this kinetic advantage and often leaves more unreacted starting material.

    We’ve seen some customers consider ethylene glycol or 1,4-Butanediol instead. Both have important roles in industry, yet neither brings together the same blend of solvency, moderate boiling point, and non-volatile behavior as 2,3-Butanediol. Plasticizer manufacturers, for example, often struggle with excessive volatility or limited compatibility when they swap in 1,4-BDO. 2,3-Butanediol sidesteps this challenge, performing well at temperatures that would trigger loss or yellowing in other glycols. Our continuous feedback loop with polyurethane, coating, and personal care producers underscores these distinctions — operational efficiency benefits, too.

    Specification Details That Matter Day to Day

    In real terms, our standard technical grade of 2,3-Butanediol checks in at a minimum 99.0% purity by gas chromatography. We manage water content tightly, recognizing how excess moisture invites unwanted side reactions in urethane and resin systems. Most customers request colorless to pale yellow liquid grades, with minimal odor. This isn’t just an aesthetic factor. Experience shows that strong odors often point to excessive ketone residues or aldehydes, both unwanted in performance applications and after-processing.

    We monitor density and viscosity parameters to make sure blending runs the way customers expect. For example, viscosity stays within 25–35 mPa·s at 20°C, which supports easy movement through pumps and dispensing systems. We’ve observed that thin or overly viscous variants from less controlled sources can trigger run-to-run dosing errors. By sticking with repeatable density, we help partners keep their own dosing on point, even in automated, high-throughput lines.

    Color stability often determines the final user experience. Contaminants can cause gradual yellowing over time, especially during storage in high-humidity environments. Our team runs accelerated aging tests and ultraviolet exposure cycles to verify performance over extended warehousing periods. Issues spotted early in our QA lab mean finished products retain clarity and shelf appeal, saving distributors and end users costly recalls or shelf life disappointments.

    Practical Applications, Not Just Laboratory Scenarios

    Many daily uses lean on 2,3-Butanediol for its balance of solvency and reactivity. It slips in seamlessly as a chain extender in polyurethane foams — both rigid and flexible. Frequent buyers producing insulation panels notice that switching from lower grades increases compression set resistance and reduces batch re-batching. Those in the field of industrial coatings or adhesives find it gives a boost to mechanical strength and hydrolytic stability in finished goods.

    Beyond plastics and foams, 2,3-Butanediol serves as a humectant and viscosity modifier in industrial lubricants and as a component in antifreeze formulations. In those settings, the payoff centers on controlled water uptake and freezing point depression, letting finished products work across changing climates. Unlike mono- and triols, which often require blending to balance moisture performance, 2,3-Butanediol achieves this through molecular symmetry, translating into higher stability under field conditions.

    Our longstanding partners in biotechnology push these boundaries further. They use 2,3-Butanediol as a fermentation substrate or platform molecule for green synthesis, taking advantage of its relatively simple conversion routes to methyl ethyl ketone and other specialty chemicals. By shipping a biobased option with traceable origin and full composition breakdowns, we offer these users tools to meet strict sustainability or regulatory requirements.

    Meeting the Challenge: Stability, Safety, and Handling

    Reliable raw materials underpin safety across the chemical value chain. 2,3-Butanediol’s chemical stability under storage and mild handling gives operators extra breathing room over more sensitive glycol ethers. In our facilities, we use stainless steel and appropriate sealing materials to avoid leaching or contamination during filling and transfer. This means receiving tanks and storage drums stay within spec and last longer between cleaning cycles.

    Some producers overlook the subtle hazards tied to poorly stored glycol derivatives. Spoilage by microbial growth, or the absorption of atmospheric oxygen, can cause spoilage or off-grade batches. We mitigate that by filling under dry nitrogen and using tamper-proof closures. In the long run, the extra diligence prevents unnecessary loss at every stage and avoids surprise reactions during blending. Customers who depend on just-in-time delivery point out the difference in how much waste they produce when quality starts consistent.

    Each operator faces their own reality with equipment, process constraints, and batch sizes. Our team has collected data from hundreds of transit and storage scenarios, learning how temperature swings and humidity spikes affect residual quality. This feedback led us to adjust storage advice and handling protocols, which we share with customers to help cut downtime. We believe this kind of technical transparency fosters trust, as partners see the thinking that goes into every shipment.

    Comparing to Other Glycols: A Manufacturer’s Real-Life Experience

    Many customers ask whether switching to or from 2,3-Butanediol makes sense in their operation. We always take questions about alternatives seriously. Over years of hands-on testing, our labs have compared 2,3-Butanediol side by side with 1,4-Butanediol, ethylene glycol, and propylene glycol. Repeated bench trials consistently show the lower volatility and lower aldehyde side-product formation of 2,3-Butanediol when processed under identical conditions.

    In polyol blends, less stable alternatives tend to produce more unwanted byproducts when exposed to catalyst residues or oxidative environments. This means more time spent cleaning up or discarding failed output. Several users of pre-polyol mixes have noted that shifting to our well-controlled 2,3-Butanediol slashed their noncompliance rates. By sidestepping headaches linked to under-spec blends, customers report smoother scale-up and stronger confidence in performance when shipping end products.

    It’s also true that 2,3-Butanediol rarely gets chosen for cost alone. Its technical edge stands out when end-product reliability and resistance to hydrolysis outweigh the lure of cheaper glycols. The trade-off is clear in large-scale runs — fewer stops to clear deposits or clogs, lower risk of off-odor, and better stability in finished plastics. While buyers may try to balance short-term cost versus backup options, the tangible difference in output consistency remains hard to argue with after a full production cycle.

    Supporting the Move Toward Green and Sustainable Chemistry

    Sustainability pushes aren’t new, but real progress comes from more than a marketing claim. Increasing demand for bio-derived glycols led our facility to shift part of our 2,3-Butanediol output to renewable feedstocks. Batch tracking and separated process trains ensure that users requiring bio-based documentation receive full chain-of-custody support. By logging every step from raw fermentation material through purification, we help both major and niche buyers meet their documentation and regulatory goals.

    Environmental compatibility doesn’t just rest on feedstock. Processing efficiency counts, too. Our plant maintains internal targets for energy reduction and wastewater minimization with each batch. For some partners, particularly in the EMEA region, this commitment affects their own sustainability calculations when purchasing intermediates. Ongoing feedback and audit participation give buyers confidence that their supply complies with current market and legal pressures.

    We’ve merged continuous improvement plans with direct customer input, refining our process to minimize high-energy refinements and broaden the applicability of less refined grades. These grades satisfy sectors without the need for pharmaceutical-level purity but requiring traceability and steady supply. Shifting best practices from theory to daily procedure means everyone in the supply chain benefits — from operators to brand owners — in streamlining environmental reporting and reducing waste.

    Overcoming Challenges in the Production and Supply of 2,3-Butanediol

    Producers working in volatile raw material markets quickly learn that risk control beats speculation. Our team consistently monitors supply trends and pre-books core feedstocks wherever possible, aiming to avoid the price spikes that ripple through the market at random. More than once, holding the line on essentials helped our downstream partners lock in production plans while others scrambled for stock. Regular communication loops let us adjust batch order timing and minimize bottlenecks.

    Scaling up sometimes throws curveballs: yield drift, increased impurity build-up, or tricky off-gas management. We’ve spent years fine-tuning distillation and extraction steps, saving operating hours by identifying where overspecification costs more than it saves. Collaboration with catalyst and process technology suppliers opened routes to both greater throughput and improved selectivity. Changes get tested small-batch first, never sprung on the full production line. These cycles of feedback, analysis, and measured adoption let us bring new capacity online with less risk to customers counting on reliable delivery.

    Long-term partners recognize reliability means more than a one-off quick shipment. Extended audits are part of our routine, not a burden. This means more work on our end, but it reassures everyone that standards for human and environmental safety are locked in, from design to shipping. Simple reporting and open access to quality records mean partners can respond quickly if a question arises. In an environment shaped by increasing scrutiny and quick-shifting regulations, real information, not just claims, make the difference.

    Choosing 2,3-Butanediol: Points for Consideration Based on Factory Experience

    For formulators weighing a switch or validating a new raw material supplier, practical factors go beyond surface-level specs. The reality inside a processing plant centers on less wasted time, fewer batch re-cycles, and reduced scrap rates. Over the years, endless rounds of customer trials reinforced how switching to a well-controlled 2,3-Butanediol source means fewer process interruptions and less paperwork tied to out-of-spec lots.

    No single supplier can claim perfection, but years on the line prove the value in transparent practice — honest certificates, documented change controls, and onsite traceability. Some buyers prefer hands-on plant visits before green-lighting a new supplier. We welcome this, knowing that walking the floor often answers more questions than glossy brochures ever will.

    In crowded chemical markets, it’s easy to chase marginal price cuts just to win bids. The overlooked costs creep in as reprocessed batches, time lost to troubleshooting, or raw material compatibility issues. Product experience teaches that minor inconsistencies in base material show up as major headaches six months later. That’s why many of our partners treat primary materials like 2,3-Butanediol as critical, not interchangeable, inputs.

    Looking Ahead: Building Better Partnerships Through Open Practice

    Every step, from raw material intake through final loading, affects the performance and usability of finished 2,3-Butanediol. We’ve learned that knowledge and support shouldn’t stop once product leaves the gate. Regular check-ins with buyers, follow-up technical calls, and detailed reporting on batch histories lead to collaborative improvements in both user operations and our own protocols. This openness builds the kind of resilience that keeps supply chains running through market shocks and regulatory shifts.

    Commitment to transparent operation, robust internal QA, and honest feedback has carried more weight with our customers than low-ball pricing ever could. For buyers looking at 2,3-Butanediol, the real question is whether a supplier understands the day-to-day realities faced by production teams. Our response has always been to ground every promise in daily factory practice — whether that means splitting lots to reduce transit risk, executing more frequent spot checks, or implementing customer-driven trials for application-specific needs.

    These lessons don’t just apply to us; they shape partnerships and help innovative users unlock better performance and cost management on their own lines. Open dialogue, rigorous process, and mutual accountability turn specialty chemical supply from a commodity transaction to a true supply chain solution. That’s why 2,3-Butanediol shines in applications where reliability and application-specific properties aren’t optional, but essential.

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