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HS Code |
979979 |
| Cas Number | 123-41-1 |
| Iupac Name | Pentan-2,4-diol |
| Molecular Formula | C5H12O2 |
| Molar Mass | 104.15 g/mol |
| Appearance | Colorless liquid |
| Melting Point | -34 °C |
| Boiling Point | 207 °C |
| Density | 0.967 g/cm³ (at 20°C) |
| Solubility In Water | Miscible |
| Flash Point | 107 °C (closed cup) |
| Refractive Index | 1.435 (at 20°C) |
As an accredited 2,4-Pentanediol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The 2,4-Pentanediol is packaged in a 500 mL amber glass bottle with a screw cap and chemical safety labeling. |
| Shipping | 2,4-Pentanediol is shipped in tightly sealed containers, typically plastic or glass bottles, to prevent contamination and moisture absorption. It should be stored and transported in a cool, dry, well-ventilated area, away from incompatible substances. Proper labeling and handling measures must be followed according to safety and regulatory guidelines. |
| Storage | 2,4-Pentanediol should be stored in a tightly closed container in a cool, dry, well-ventilated area, away from incompatible substances such as strong oxidizers. Keep it out of direct sunlight and sources of ignition. Store at room temperature and clearly label all containers. Proper storage helps prevent degradation and maintains the compound’s stability and safety. |
Applications of 2,4-Pentanediol in Industrial Manufacturing2,4-Pentanediol, a bio-based diol, plays a pivotal role as an intermediate and auxiliary agent in multiple industrial sectors. Our production facilities supply high-purity grades tailored for strict downstream process and compliance needs. Below, we outline the principal industrial application pathways served by 2,4-Pentanediol from the manufacturer’s perspective. 1. Specialty Polymer Synthesis for Polyurethane ElastomersAs a chain extender and co-monomer, 2,4-Pentanediol is integrated in the formulation of tailored polyurethane elastomers. Industrial compounders use it to achieve specific flexibility profiles and improved hydrolysis resistance. The raw material enters after the primary polyol and isocyanate metering, permitting close adjustment of thermomechanical parameters in automotive bushings, industrial rollers, and conveyor belts. Each formulation must meet automotive VOC, strength, and abrasion requirements, with adherence to certification and REACH pre-registration of all constituents. Industry compliance standards
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2. Chemical Intermediate for Agrochemical Active Ingredient Synthesis2,4-Pentanediol acts as a selective intermediate in the multi-step synthesis of several pyridine and phenol-based active ingredients. Agrochemical producers employ the compound in condensation and cyclization reactions to yield targeted fungicides and insecticides. Strict compliance with GLP, batch traceability, and impurity limits applies, with downstream use driven by the need to produce high purity and minimal unwanted by-product formation. Industry compliance standards
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3. High-Performance Solvent in Lithographic Ink ManufacturingPrinting ink and specialty lithographic ink formulators incorporate 2,4-Pentanediol as a high-boiling co-solvent. Its balanced polarity and controlled volatility provide reliable performance in high-speed rotary presses and packaging applications. Producers select it to improve pigment dispersion, film formation, and controlled drying, with full compliance to pressroom HSE, air emission, and downstream migration constraints. Industry compliance standards
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4. Coalescing Aid for Architectural Waterborne CoatingsPaint and coating manufacturers apply 2,4-Pentanediol as a coalescent agent in vinyl-acrylic and pure acrylic waterborne dispersions. The compound aids latex film formation under ambient conditions, supporting compliance with eco-label, LEED v4, and low-odor indoor air quality certification. Integrators precisely adjust usage during millbase and let-down phases, ensuring robust dry film integrity while meeting stringent volatile restrictions for architectural and consumer applications. Industry compliance standards
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5. Stabilizer in Industrial Metalworking Fluid FormulationProducers of semi-synthetic and synthetic metalworking fluids use 2,4-Pentanediol to enhance emulsion stability and improve microbial control. It regulates phase separation and supports concentrated coolant shelf life for metal stamping, grinding, and machining. The raw material integrates after emulsifier pre-mix with batch-wise titration to attain the required balance of anti-corrosion and anti-foam properties, supporting compliance with operator health, machine compatibility, and environmental discharge guidance. Industry compliance standards
Typical usage ratio
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Years of refining chemical processes on the factory floor have shaped the 2,4-Pentanediol we deliver today. This molecule—also known as diacetone alcohol—shows its worth in both large-scale batch reactors and small pilot runs. Our team takes pride in its clarity and purity. Every drum of our 2,4-Pentanediol features a near-water white appearance, thanks to precise distillation steps that strip out troublesome byproducts. Regular testing ensures water content sits at industry-acceptable levels and that both dioxane and other glycols stay well below interference range for standard formulations.
Through thousands of operational hours, we've seen demand cluster around a few practical grades. The majority of clients specify technical grade, but we've scaled to pharmaceutical and electronic cleaner levels. Our standard model for general industry meets or exceeds a GC purity spec of 98%. In most applications, low color and high assay count for more than purity numbers. Fresh distillation on our plant lines means export shipments stay below a 25 APHA color threshold.
On the plant side, we package 2,4-Pentanediol in 200-liter steel drums with nitrogen blankets to minimize oxidation. For customers running pilot trials or high-volume systems, bulk isotank loads leave our gates under inert gas. Every batch gets a certified COA, with routine checks for residual solvents and peroxides. This hands-on control reflects not just regulatory compliance, but the daily reality of working with customers who need reliability for paints, coatings, and surfactant blends.
Daily calls from R&D chemists, production coordinators, and procurement managers remind us why 2,4-Pentanediol holds a unique spot in the chemical toolbox. The two hydroxyl groups along its backbone allow for versatile hydrogen bonding. This matters in urethane modification, performance coatings, and specialty surfactant synthesis. High-purity batches keep reaction yields tight and color drift low. In resin manufacture, this translates to better film formation and resistance to yellowing. For cleaning fluids, minimal trace acids keep downstream catalysis running without clog.
A client in the adhesives field once pushed for a blend that could outlast heat cycles in automotive assembly. Their base needed a diol which ran clean and kept crosslink density high during curing. We tuned our process to bring side reaction fractions down, giving them the reproducibility in viscosity they required. Formulators exploring textile auxiliaries use it to tweak antistatic and softening properties. Even in high-volume emulsion polymer work, stable, low-color diol input from our plant means pigment dispersions show consistent gloss—straight from raw input to final paint on a jobsite wall.
Daily plant work makes the differences between 2,4-Pentanediol and other diols more than an academic distinction. Unlike 1,2-propylene glycol or even 1,4-butanediol, the five-carbon skeleton of 2,4-Pentanediol adds a stretch in flexibility that suits certain performance materials. Its boiling point and miscibility profile grant formulators the freedom to blend with water and common organic solvents, without abrupt phase separation.
On the production side, we’ve witnessed fewer byproduct odors and lower off-gassing with our 2,4-Pentanediol compared to some branched glycols. Coatings chemists often prefer its slower evaporation during open time application. That results in a smoother dried film, especially when ambient humidity shifts. Foam control is another zone where this diol shines, keeping formulations from kicking off runaway microbubble generation during compounding. Over the years, our QC team has confirmed that purification steps tailored for this specific molecule lead to more stable shelf life than what we’ve seen in batches with mixed glycols, where test results swing wider week over week.
In high-temperature resin synthesis, 2,4-Pentanediol’s structure means fewer unwanted esterifications and byproducts. Many smaller diols introduce volatility or even crosslinking artifacts. End-users who trialed side-by-side batches quickly picked up the difference in clarity and stability after several months under warehouse conditions. This feedback loops directly into our process controls, keeping water and aldehyde impurities in check as a matter of routine, not exception.
On-shift operators know subtle cues: distillation head temperature timing, reflux ratios, the unique scent at the loading dock. Years have taught us not to take shortcuts. Our 2,4-Pentanediol passes through fixed-bed purification, stripping out color bodies and odd-chain distillates that can appear after extended run times. Operators track every phase of the batch cycle, logging temperatures in real time and performing in-lab GC assessments long before a product hits storage.
The integrity of each lot bears out under actual use, not just paper specs. By integrating automated sampling into our workflow, we catch shifts in pH and acetone residue before risk reaches the customer. Quick feedback from both in-house labs and direct customer applications keeps the loop tight. Shipping teams trained on safe diol handling anchor our focus on traceability—important in today’s tighter regulatory climate.
We don’t draw the line at making material to an old formula. Close work with partner labs demonstrates new performance corners every year. A few years back, an inquiry from a water-based coatings developer opened up application trials at higher solids levels. Our technical team tweaked batch profiles, dialing water content down by fractions per thousand to hit new rheology points. More recently, demand has shifted toward food contact grade and trace impurity thresholds for electronics use. Stepping up from industrial to super-premium grade involves more than tweaking a checklist—it calls for someone on the plant floor, adjusting column vacuum profiles and catching minor color shifts.
One lesson stands out: customers rarely want exotic grades unless the basics hold steady. After an intensive audit from a multinational, we updated our process hazard analysis and doubled training on suppressant protocols, making sure no batches left the site with peroxide numbers out of range. That’s knowledge gleaned from the line, not a brochure.
Our team learns most from direct customer feedback. Each complaint or quality query triggers a root-cause review, feeding back into improved process control software or operator retraining. Some overseas paint makers flagged foaming during scale-up. We traced this back to a trace glycolate that crept up in longer distillation cycles. With updated column profiles, both the foam and volatile impurities dropped well below their spec, improving not just compliance but customer productivity on the floor.
Procurement managers want predictable timelines and no nasty surprises on arrival. Our shipping staff swaps fresh nitrogen blankets and validates closure seals on every outbound shipment. Supply chain interruptions, from port delays to container shortages, press on every part of production. We keep extra inventory during storm season and double-check requirements for UN packaging—realities that keep the operation robust.
Years ago, most global buyers worried more about purity and less about downstream traceability. Today, sustainability sits squarely in the conversation. Changing solvent regulations in the EU and North America send waves through order lots and production scheduling. We updated our solvent management plan two years back, focusing on water conservation and energy optimization in our distillation loops. The plant team swapped out energy-inefficient chillers for heat recovery exchangers—a move that not only cut cost but slashed annual CO2 emissions. European customers, held to REACH standards, have pushed for full transparency on raw materials, so we maintain a digital log for every chemical load. It’s another step in keeping doors open to new geographies.
Our waste minimization measures don’t stop at paperwork. Solvent recovery units run almost continuously, with every off-fraction swept and tested before reintroduction or safe disposal. Local communities near our plant take a real interest in water use, and regular public reporting builds trust. These operational shifts aren’t marketing—a steady plant is a safe one for both our operators and the regions we call home.
Making 2,4-Pentanediol to tight specifications takes more than just raw material quality; it requires vigilance in every plant section. A misstep in storage temperature can shift water content above target, and a maintenance lapse on pressure relief could mean off-spec residue in a whole consignment. Routine equipment testing—down to valve seat checks and electronic flow calibrations—fuels our batch reliability.
When contamination emerges, responding quickly prevents any domino effect downstream. Our team follows through with everything from lot quarantine to cross-training old hands on potential new issues: trace organic acids, dioxane contamination, or even odd microbial counts if storage runs warm. Each challenge met on the shop floor builds a deeper well of experience. Sometimes, buyers ask for details seemingly insignificant to outsiders—tank coating types, gasket compatibility, drum liner grades. We respond from a place of direct observation, not generic answers.
Supply chain volatility has prompted us to build flexibility into sourcing. After supply shocks in upstream acetone markets, our procurement unit secured partnerships with alternative feedstock partners, and production teams recalibrated processes within a matter of weeks. Keeping fresh stock rotated in dedicated warehouse aisles means customers never wait for standard grade, even under sudden volume surges. As a manufacturer, we remain responsive to shifts in demand without sacrificing the checks that keep quality on target.
Our customer base keeps expanding—not just in volume but in technical expectation. Where buyers once saw 2,4-Pentanediol as an interchangeable diol, market trends push for specialty modifications: low-peroxide grades for electronics, high-purity cuts for pharmaceutical intermediates, and batches formulated for the latest eco-label compliance. Each shift demands feedback loops between the R&D benches, plant operators, and end-users. We check new use cases against long-term storage stability, making sure there’s no drift in performance. This response cycles back into batch records, shifting standard practice inch by inch.
Markets in Asia-Pacific have seen a jump in demand for high-solids formulations. These customers need tighter water specs, and our team answered that with a low-water grade distilled directly from modified column profiles. In Europe, a surge of bio-based raw material preference has yet to fully hit the diol sector, but we watch pilot projects closely. One lesson: flexibility in process and open lines of communication beat rigid product lines every time.
Direct feedback from users in specialty adhesive, ink, and resin sectors make us rethink the limits of what standard material can do. New applications for 2,4-Pentanediol keep cropping up—from advanced coatings with heat resistance demands, to biomedical carriers demanding stricter bioburden checks. We keep process records ready for quick customer review, aiming to share lessons learned from our own shop floor, not just market surveys.
Building trust comes down to consistency and fast, open communication. Customers expect not just product, but reassurance that their next drum or tank won’t surprise their operators. Problems happen, but rapid action—backed by thorough batch records and open access to plant experts—keeps confidence high. Our technical support draws from years spent in the plant, not a help desk.
Product knowledge does not stand still. Ongoing training for every team member—whether it’s the new shift welder or a lab analyst facing a tricky unknown impurity—anchors our expertise. By sharing what we see day to day, we aim to support both product success and safe practice across the value chain. Each improvement on the shop floor reflects in the reliability of every shipment, building a reputation batch by batch.
Manufacturing 2,4-Pentanediol means adapting every week to changes in both customer requirements and regulatory headwinds. Real-world experience, not just formal training, drives innovation in process and quality. Every challenge—variability in acetone supply, unexpected demand surges, or shifts in performance requirements—feeds back into smarter plant operations and tighter product control.
Over years of production, small improvements in plant practice have added up: tighter water management, improved purification, and deeper outreach to clients who want more than the standard offering. These shifts benefit every end-user down the line, from coatings technicians tuning for humidity changes to electronics manufacturers chasing ever lower contaminant numbers. By staying close to the actual production, not just the theory, we help shape both the outlook for 2,4-Pentanediol and its role as a trusted input across a fast-changing chemical landscape.