|
HS Code |
752693 |
| Chemical Formula | C2H4O |
| Molar Mass | 44.05 g/mol (monomer unit) |
| Appearance | White to yellowish powder or granular solid |
| Solubility In Water | Highly soluble |
| Melting Point | Approximately 230°C (decomposes) |
| Ph 1 Solution | 5.0 – 7.0 |
| Density | 1.19 – 1.31 g/cm³ |
| Viscosity | Varies with molecular weight and concentration |
| Glass Transition Temperature | Approximately 85°C |
| Tensile Strength | Highly dependent on grade, typically 30–100 MPa |
| Biodegradability | Partially biodegradable |
| Odor | Odorless |
As an accredited Polyvinyl Alcohol (PVA) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Polyvinyl Alcohol (PVA), 25 kg, packed in a white, moisture-proof, multi-layer kraft paper bag with product labeling and safety information. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for Polyvinyl Alcohol (PVA): Typically loaded as 16-18 metric tons, packed in 25kg bags, safely palletized and shrink-wrapped. |
| Shipping | Polyvinyl Alcohol (PVA) should be shipped in tightly sealed, moisture-proof containers, protected from direct sunlight and incompatible substances. Transport vehicles must be clean and dry. Ensure the product is secured to prevent spillage. Follow local and international regulations for chemical transport, and provide appropriate labeling and documentation during shipping. |
| Storage | Polyvinyl Alcohol (PVA) should be stored in a tightly sealed container in a cool, dry, and well-ventilated area. Avoid exposure to moisture, heat, and incompatible materials such as strong oxidizers. Keep away from direct sunlight and sources of ignition. Store at room temperature and ensure good labeling for identification to prevent contamination and ensure safe handling. |
| Shelf Life | Polyvinyl Alcohol (PVA) has a typical shelf life of 2-3 years when stored in a cool, dry, and sealed container. |
|
Purity 99%: Polyvinyl Alcohol (PVA) with 99% purity is used in food packaging films, where improved barrier properties and product safety are achieved. Viscosity Grade 24-26 mPa·s: Polyvinyl Alcohol (PVA) of viscosity grade 24-26 mPa·s is used in textile warp sizing, where enhanced yarn strength and smooth weaving performance result. Molecular Weight 85,000-124,000: Polyvinyl Alcohol (PVA) with a molecular weight of 85,000-124,000 is used in paper coatings, where excellent film formation and printability are provided. Melting Point 230°C: Polyvinyl Alcohol (PVA) with a melting point of 230°C is used in hot-melt adhesive formulations, where efficient processing and strong bonding are achieved. Particle Size ≤80 µm: Polyvinyl Alcohol (PVA) with particle size ≤80 µm is used in emulsion polymerization, where superior dispersion stability and uniform polymer particles are ensured. Hydrolysis Degree 88-89%: Polyvinyl Alcohol (PVA) with a hydrolysis degree of 88-89% is used in cement additives, where improved water retention and workability are obtained. Stability Temperature up to 120°C: Polyvinyl Alcohol (PVA) stable up to 120°C is used in detergent pod films, where structural integrity and controlled solubility are maintained. |
Competitive Polyvinyl Alcohol (PVA) prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615371019725 or mail to sales9@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8615371019725
Email: sales9@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Polyvinyl alcohol usually draws attention for its clean water solubility and strong film-forming ability, but every batch has its roots deep in consistent chemistry and years of process adjustment. In our facility, production lines run steadily, guided by decades of experience with vinyl acetate polymerization and hydrolysis. Every metric ton carries our fingerprints, not just the mold of a commodity.
We focus on several standard grades, including 17-99 and 24-88, with key differences in polymerization and hydrolysis levels. These numbers translate to distinct behaviors in applications. For instance, 17-99 refers to a degree of polymerization around 1700 and a hydrolysis of 99 percent, ideal for applications demanding superior water resistance, such as textile sizing or emulsion stabilization. On the other side, our 24-88 model, falling between 2400 polymerization and 88 percent hydrolysis, brings more flexibility and faster dissolution for processes like paper adhesives or re-dispersible powders.
It takes constant vigilance to keep our batches aligned with the specifications that real manufacturing calls for. Polyvinyl alcohol loves to absorb moisture. Even subtle atmospheric shifts in the warehouse can nudge its flow characteristics or performance. We use controlled storage and routine sampling, not because paperwork asks for it, but because any shift in viscosity or hydrolysis degree changes how our customers' machines run down the line. We hear from film coaters and papermakers that clean, repeatable performance cuts headaches and downtime.
Viscosity matters in this product, probably more than it does in most others on a chemical plant floor. For high-viscosity grades, our team iterates small adjustments at the post-reaction stage, removing insolubles and measuring solution behavior with a critical eye before anything ships. This vigilance gives confidence that each lot will dissolve just as expected, forming predictable films or gels whether applied by hand or in continuous operations.
Take textile sizing, where fiber breakage or yarn fuzz leads to waste, rework, and even looming shutdowns. PVA earns its stripes under tension, forming protective films that guide the thread through the weaving process. The high-hydrolysis versions we make bond tightly to fiber surfaces, holding up against the caustic treatments of dyeing or finishing. Paper producers trust our mid-range models to provide the right balance of adhesion and film flexibility. Too much rigidity and the paper will crack under folding; too little and fibers fluff at the edges. Our history with customers tells us most operations need the goldilocks grade—a product robust enough to protect, soft enough to flex. We help paper mills dial in starch-PVA blends with practical lab tests, not just theory.
In construction, especially in making re-dispersible polymer powders (RDPs) for dry-mix mortars, PVA acts as a backbone that lets powders dissolve into water with ease and build resilient films. Tile adhesive makers often ask us for grades dissolving rapidly in cold water, with low ash and minimal gel particles. If the mortar blends clump or the film dries milky, it creates failures that only show up days or weeks later on the job site. Real-world site testing with our clients led us to tune grades for these daily challenges, rather than sticking rigidly to chemistry alone.
Film producers—those who cast food packaging or pharmaceutical pouches—prefer grades with tight control over aldehyde content and gel levels. Out-of-spec batches risk making brittle films or introducing smells that contaminate contents. This kind of feedback keeps our lab team focused. We balance chemistry, filtration routines, and drying cycles to meet these demands head-on.
It’s tempting to lump polyvinyl alcohol with other water-soluble polymers, but a closer look at our shop floor reveals practical distinctions. Polyvinylpyrrolidone and polyethylene oxide both swell in water, but rarely match PVA’s clarity and strength in thin films. Starch or cellulose ethers compete on price but lack the chemical resistance or adhesive power that our high-hydrolysis grades deliver.
When buyers ask us why to use PVA instead of polyacrylics or simple gums, we point to its clean combustion profile—no lingering odors or corrosive byproducts during incineration. Certain adhesives and paper coatings simply last longer under moisture stress when PVA forms their base. It withstands oil and grease better than most competitors, and offers film strength at low thicknesses few other resins reach.
We see engineers in battery assembly and electronics choosing PVA for its purity and dielectric properties, where substitutions would risk contamination. It brings nuanced benefits to 3D printing filaments and specialty ceramics, improving extrusion stability and burnout without leaving ash behind.
Our plant operates with attention to the little things: fine-tuning pH during polymerization, using stainless steel equipment to evade trace metal contamination, and updating filtration processes as new market needs surface. Each batch, whether destined for Asia’s textile market or the coatings labs in Europe, gets its lot-specific test data. Instead of hiding these details, we make them available directly to technical teams upon request.
We never treat polyvinyl alcohol as a “one size fits all” resin. Decades of customer feedback have taught us that the same model number means something different to a papermaker, a film caster, or a tile adhesive blender. Even water quality in their facilities influences the dissolution time, solution foam, or finished product clarity. This real-world use case data shapes every test, and we regularly adapt reaction temperatures, polymerization initiators, or drying steps to match these expectations.
We work under strict discharge standards, using closed-loop systems and solvent recovery whenever possible. Acetic acid vapor, a byproduct from saponification, gets scrupulously scrubbed and reclaimed for reuse. It’s not just regulatory compliance—it’s respect for resources and operators who spend their careers on this line. Several years ago, we upgraded reactors to use energy more efficiently, translating into both a lower carbon footprint and reduced production costs.
Polyvinyl alcohol decomposes into simple molecules under standard wastewater treatments, giving a clear advantage over more persistent polymers. Industrial partners—especially in food and pharma—report easier compliance checks downstream. We follow these cases and adjust product offerings to maintain safety, both in handling and end-of-life.
Every industry tool poses its own challenges, and PVA presents a few. Caking can develop if moisture control falters in bulk storage, and our operators take extra steps in bulk packaging and warehouse checks. High viscosities come with mixing headaches that we help solve through detailed technical support, from on-site troubleshooting to custom solution preparation tips. When a customer faces gel formation or incomplete solubility, we don’t just ship another bag—we send technical staff to investigate and analyze the dissolved profile, helping find the route cause.
Supply chain hiccups tend to cycle through, but tough resin demand around the globe has taught us to invest in multiple grades and storage flexibility. During pandemic years, we engaged closely with logistics partners and built inventories to weather longer lead times. Some client operations can’t afford to switch midsize orders due to quality differences, so we use robust production planning and lots of communication to meet their schedules.
We’ve seen customers ask for everything from ultra-low residuals for biomedical fields to “just basic, reliable glue” for carton box makers. Organic solvent compatibility, specific solution viscosity, detailed granule sizes—these aren’t menu options picked blindly. Our team draws from reference batches, historic process records, and application case studies to suggest a grade or develop a new one. On several occasions, success followed weeks of shared test runs and tweaks, not overnight promises.
Some end-users want higher tack, blending PVA with plasticizers or natural gums; we support them with blend testing and stability data rather than speculative advice. Others press for environmental claims or certifications, and instead of relying solely on third-party seals, we provide in-house biodegradability and toxicity results, grounded in actual testing, not marketing copy.
Many firms quote hydrolysis and viscosity numbers, but our returning customers tell us about the subtle signs of batch quality: clear dissolution curves, absence of residual odor, repeatable flow in automated feeders. Our technical support doesn’t end with shipping—we keep lines of communication open for anything including particle analysis or scaling to pilot lines. Every once in a while, a new failure mode crops up—a haze on a film, a stickiness in a fiber blend. Decades of trend data help us act quickly and collaboratively to root out the source, often in partnership with application labs at the customer’s site.
Efforts pay off when clients’ own QC labs report long runs without surprise deviations, when mixing hoppers no longer clog, and finished products gain a meaningful shelf life boost. For us, these results matter more than simply hitting a viscosity window or producing a certain tonnage.
Market evolutions press us to do better every year. As water-based processes and “green” chemistry gain favor, performance demands outstrip what classic grades alone can deliver. Some partners in 3D printing look for cleaner burnout and fine flow; medical and personal care clients need trace metals and impurity levels undetectable by decades-old tests. We invest now in analytical updates and process controls—instruments capable of picking out parts per billion sodium or aldehyde byproducts.
Research isn’t siloed in the lab either. Operators on the production floor run method validation steps, comparing real runs against small-batch pilot tests. Scale-up involves a feedback loop, not just scaling chemistry up blindly. Environmental monitoring happens side-by-side with production sampling, flagging troubles early. When we see trends, from higher film clarity needs to starch-PVA blend stabilization, we institute changes stepwise—first in test batches, then plant-wide if results hold up.
Many customers now ask about microplastics and their environmental fate. Our PVA process and downstream use guidelines address these questions not with catchphrases, but with concrete degradation data, solution stability monitoring, and cooperation with municipal wastewater authorities. In the next several years, the focus will likely widen to include closed-loop recycling, energy input reduction, and supply chain traceability—all areas where we aim to keep leading rather than catching up.
Every challenge faces in PVA use, from solution preparation quirks to long-term storage, meets a practical response developed by our teams. Bulk users often install solution tanks with precision dosing and agitation controls, based on our recommendations. Where foaming threatens process stability, we supply details for anti-foam agent selection tested specifically with our grades. If clouding appears during dissolution, methods for incremental loading and staged heating, developed over hundreds of pilot runs, help restore clarity.
Operational habits matter. Routine cleanouts, environmental checks, and dissolution protocols make as much difference as resin grade choice. That’s why our customer visits include walkthroughs and operational checklists, not just product handouts. Problems flagged quickly—whether a shift in viscosity, a clump in a feed hopper, or a film that just won’t clear—are easier to solve in partnership.
A handful of customers using PVA for specialty coatings report needs for modified blends—products with side-chain modifications or co-polymerized elements for improved strength or solubility. Instead of saying “yes” to every customization, we lay out process implications, required validation steps, and real timelines. In several cases, these discussions prevent costly production delays or missteps that a less experienced supplier might gloss over.
Polyvinyl alcohol manufacturing balances between chemistry, operations, and practical support. Every grade on our shelf exists because somebody somewhere in the real world needed it, pressed for new properties, or faced a unique operating constraint. Our response to these needs forms the backbone of our offering—grades refined over decades, lab support not tied to sales pitches, a learning relationship with each partner.
Our team sees every inquiry as an opportunity to learn and improve—not with platitudes, but with new tests, shared sample batches, and real site experience. The lessons we gather feed right back into the production cycles, ensuring a tighter fit between our products and end use every year. From the edge of innovation, pushing toward biodegradable forms, to steady hands keeping classic grades at peak consistency, our approach is built around the realities our customers live every day.
Many times, visitors and clients want to know how long PVA lasts, whether it’s food safe, or what side effects come from combustion. We anchor our answers in experience. Properly stored, PVA keeps many months without loss of function, as shown by batch retention testing. Food contact applications lean on our food-grade certifications, along with tight controls on extractables and impurities. For combustion, we provide breakdown profiles and recommendations for safe handling.
Other recurring questions touch on mixing: cold or hot water dissolution, agitation intensity, storage after solution prep. We walk through scenarios based on our own process data—what works in bulk tanks, what fails in high-speed lines, which grades tolerate broader temperature swings. No two operators face the same water chemistry or solution tank constraints; support comes one problem at a time, one recommendation at a time.
The story of polyvinyl alcohol isn’t just chemistry on paper—it lives in the trial runs, adjustments, successes, and rare failures that shape manufacturing. Each roll, bag, and shipment we send out carries the weight of generations of technical know-how and honest problem-solving. The path to perfecting each grade started decades ago, but the work continues, driven by the evolving expectations of our partners.
Through every shift, our manufacturing mindset keeps us grounded. For us, PVA isn’t just a commodity resin but a craft learned through experience and guided by a constant conversation with those who rely on the material. As industry standards change and applications broaden, we stand by our commitment: to make polyvinyl alcohol not just well, but better each year, for every person and process that depends on it.