SUNDY Polyvinyl Alcohol belongs to a class of synthetic polymers, built from vinyl acetate through a process of polymerization followed by hydrolysis. Its molecular formula reads as (C2H4O)x, bringing together ethylene and acetate units in chain-like structures. The polymer shows up in several forms: solid flakes, loose powder, fine pearls, and sometimes as a thick liquid solution. Density lands between 1.19 and 1.31 grams per cubic centimeter, which means the substance settles solidly in hand but dissolves in water with enough mixing. Uses stretch far and wide, from adhesives, textile sizing, and papermaking to niche roles in medicines and cosmetics. International shipping and trade recognize it by HS Code 390530.
Polyvinyl Alcohol’s backbone is unbranched, repeating units of vinyl alcohol, each segment stitched by robust carbon-carbon bonds. The chain includes an abundance of hydroxyl (–OH) groups, giving the polymer its water-loving, hydrophilic nature. You can spot a pure batch by its snowy white, almost translucent color, whether you scoop up flakes, scoop out granules, or pour out a measured solution. Physical handling tells you a lot: solid flakes crunch between your fingers, powder floats through the air, crystals stack closely, and pearls roll easily. This polymer softens and gels when exposed to warm water, forming solutions that help bind, coat, or protect.
SUNDY Polyvinyl Alcohol comes in a spread of viscosity ranges, usually measured as millipascal-seconds in aqueous solutions at 20°C. Grade and intended use define key numbers: degree of polymerization signals chain size, degree of hydrolysis lets you know how water-soluble the result will be. Molecular weight lands anywhere from 26,000 to 200,000 daltons. Packing often runs 20 to 25 kilograms per bag for solid forms, drums for liquids, and smaller pouches for specialty batches. The product stores best in cool, dry locations, protected from sunlight and moisture. Direct inhalation of powder or prolonged skin contact should be limited: safety gloves, dust masks, and proper ventilation cut down on irritation or allergic response risks. Most regulatory agencies do not classify pure Polyvinyl Alcohol as hazardous, but dust clouds can be combustible if handled without care in a tightly enclosed space.
SUNDY Polyvinyl Alcohol in powder form dissolves swiftly, an edge for mixing into water-based coatings, adhesives, or sizing solutions for textiles. The flakes often serve as feedstock for resin blends, shaped into films or threads that resist grease, oil, and even some dilute acids. Formulated solutions take center stage in the papermaking world, invisibly strengthening and making printed color richer. Pearls or beads dissolve more slowly, helpful for slow-release in pharmaceuticals or specialty coating applications. Liquid grades support thickening, film formation, or serve as a binder in ceramics and construction mixtures. The substance doesn’t break down easily in air or water—a fact that helps papers last longer, but prompts important questions about end-of-life disposal and microplastic build-up.
Every bag of SUNDY Polyvinyl Alcohol carries a Material Safety Data Sheet, and it’s smart to read it closely. Polyvinyl Alcohol itself has a low toxicity profile. Ordinary use in weaving, adhesives, or sealants will not release harmful fumes or leach toxic elements. That changes if it burns: the smoke contains carbon monoxide, and should not be breathed in. There’s little evidence linking normal skin or oral exposure to lasting harm, so wearing gloves stops mild irritation and eye rinsing clears any accidental exposure. Polyvinyl Alcohol counts as a non-hazardous cargo for global transport by sea and air, and the HS Code 390530 matches this classification for customs and regulatory paperwork.
Making SUNDY Polyvinyl Alcohol means starting with vinyl acetate—a commodity chemical—and running a well-controlled hydrolysis or alcoholysis reaction. It takes skill and precise equipment to balance degree of polymerization, viscosity, and purity, but once finished, the result stacks up well in bulks: flakes, powder, pearls, or ready-to-use liquids. End users usually dissolve a set weight of solid material into a measured volume of water, often heating to speed the process and using simple stirring rods or mechanical mixers. Solution clarity acts as an indicator: clear means fully dissolved and ready for coating, dipping, spraying, or mixing into adhesives. Waste handling ends up as a real question. Some industrial systems recover and recycle the unused Polyvinyl Alcohol, but outside controlled cycles, most of it ends up as landfill or passes through wastewater streams. Groups like the EPA and EU chemical agencies keep an eye on this trend, pushing for better recovery and biodegradable alternatives. End users will want to weigh effectiveness, cost, and environmental profile before putting Polyvinyl Alcohol into broad long-term use.
