Sundy PVA Polyvinyl Alcohol, sometimes called Sundy PVOH, stands out in the world of chemical raw materials for its reliable performance and consistent molecular structure. This synthetic polymer comes from the hydrolysis of polyvinyl acetate. Its standard chemical formula appears as (C2H4O)n. Across countless industries—ranging from adhesives to textiles—PVA plays a critical role thanks to its flexibility, water solubility, and unique set of physical specifications. It appears as a white, granular material—either in flakes, solid powder, pearls, or an easily transported liquid crystal solution.
The molecules in Sundy PVA Polyvinyl Alcohol line up in long, repeating chains of the vinyl alcohol monomer. Most commercial versions carry a degree of polymerization between 500 and 5000, providing a molecular weight anywhere from 30,000 up to 200,000 g/mol. This molecular weight determines the viscosity and strength of any finished mix or film. Sundy PVA comes in solids or flake form, often with densities clustering around 1.19 to 1.31 g/cm3. The particles present a smooth, round shape in their granulated or pearl forms, which makes measuring and handling more predictable.
Features such as particle size, viscosity grade, hydrolysis rate, and purity mark important differences between batches. Highly hydrolyzed Sundy PVA (over 98% hydrolysis) shows outstanding resistance to oils and greases, alongside strong water solubility in hot water. Partially hydrolyzed grades dissolve in cold water and adapt to other applications needing rapid solubility. The international trading community recognizes Sundy PVA Polyvinyl Alcohol under HS Code 3905300000, which covers synthetic polyvinyl alcohol in its different grades. This code matters for customs, especially since shipment of raw chemical materials needs careful documentation and consistency.
Chemically, Sundy PVA doesn’t just dissolve in water; it creates clear, adhesive-rich films. Owing to the repeating vinyl alcohol units, the polymer boasts a backbone rich in hydroxyl groups. These groups contribute to hydrogen bonding, which means that these films adhere tightly to a wide range of surfaces. The formula stays close to (C2H4O)n, and the -OH (hydroxyl) branches boost both solubility and chemical reactivity. Sundy’s PVA also resists oils, many solvents, and, with certain tweaks in formulation, handles both acidic and basic solutions.
Bulk Sundy PVA shows up mainly as a dry solid powder, flakes, or in hard, bead-like pearls. Powder pours easily into mixers and blending machines, while flakes might go straight to dissolution tanks for larger batches. Pearls prevent dust during handling—especially important in tight, enclosed processing environments. For ready-use applications, Sundy PVA solution offers crystal-clear liquid, with concentrations ranging from 5% to 20% by volume. These pre-mixed solutions support coatings or sizing, especially where downtime waiting for dissolution would cost money or disrupt manufacturing flow.
Solid Sundy PVA features a density around 1.19–1.31 g/cm³, with variance based on polymerization and granule size. This makes it denser than water but not so heavy that mixing becomes difficult. In our own labs, the powder mixes fast in standard laboratory blenders, and short periods of agitation quickly yield a homogenous solution. Material safety matters as much as performance—Sundy PVA rates as non-toxic with no halogens or heavy metals. It’s classed as largely non-hazardous under GHS, though anyone handling bulk amounts should avoid generating airborne dust or exposing the powder to open flames, since fine organic dust can ignite.
Years of field testing and published scientific study show that Sundy PVA Polyvinyl Alcohol breaks down into safe, harmless compounds under standard landfill or compost conditions. The Environmental Protection Agency in the United States lists PVA as non-hazardous and non-carcinogenic, which offers peace of mind where extensive human contact occurs—such as in paper products, food packaging adhesives, and children’s crafts. Harmful effects have not turned up with normal use, though, like all powders, inhalation of dust should be avoided. Most work environments maintain local exhaust ventilation to handle any airborne particles.
Experience in pulp and paper factories shows the unique value of PVA in surface sizing and as a binder. In the textile sector, Sundy PVA controls the weaving process, reducing thread breakage and improving finish without adding harmful residues. Our team has blended this polymer directly into adhesive mixes for woodworking and composite manufacturing, taking advantage of its water solubility and rapid drying. Its crystal-clear films get used in packaging, medical supplies, and specialty coatings, protecting finished goods against oil, solvents, and water ingress. Many manufacturers choose Sundy PVA thanks to its reliable lot-to-lot performance, easy handling, and safe profile as a raw material.
Looking for the most out of Sundy PVA Polyvinyl Alcohol begins by matching the right grade with the job at hand. Factories aiming for strong adhesive films should opt for higher molecular weight, fully hydrolyzed products for their added stick and durability. Where rapid dissolution or specialty coatings matter, partially hydrolyzed, low-viscosity forms cut processing times. Storing the dry polymer in sealed bins shields it from moisture pickup, which could force lumps or caking. Appropriate dust collection keeps workspaces clean and safe. Regular training for personnel ensures hazards are avoided—even in low-risk environments like offices or workshops using pre-diluted solutions. For shipping logistics, marking packages with the HS Code speeds customs inspections and keeps orders on track.
Sundy PVA Polyvinyl Alcohol brings together safety, reliability, and versatile chemistry. This material supports industries as a key raw ingredient, whether in factories, laboratories, or R&D centers. Its reputation for non-toxic handling, easy dissolution, and stable physical characteristics means Sundy PVA remains a staple product wherever adhesives, films, or coatings are made. Chemical buyers and engineers depend on these strengths day in and day out, driving innovation and reliable production far beyond just the laboratory bench.
