Polyvinyl alcohol (PVA) is made from vinyl acetate through polymerization and alcoholysis. It is a white, stable, non-toxic water-soluble polymer in the form of powder, flake or flocculent solid.

Polyvinyl alcohol contains many alcohol groups, is polar, and can form hydrogen bonds with water, so it can dissolve in polar water; it can also dissolve in hot hydroxyl-containing solvents such as glycerol and phenol, but is insoluble in general organic solvents such as methanol, benzene, acetone, and gasoline.

1. Textile Field: 30% or so, as warp sizing agents, fabric finishing agents.
2. Construction Field: 20%, used as a cement additive to improve the strength and crack resistance of cement.
3. Paper-making Field: 15%, used as paper surface sizing agent and coating glue.
4. Package Field: 10%, used in package film, adhesives, glue.
5. Other Field: 5% for medical field, 5% for chemical field, 5% for agricultural field.

1. observe the appearance. High-quality PVA is usually white or slightly yellow powder without impurities and lumps.
2. check its purity. PVA with high purity has more stable performance.
3. You can also test its solubility. The quality is generally better if the dissolution speed is fast and the solution is clear and transparent.

1. In ordinary adhesives and other fields, PVA with lower purity may also meet the use requirements, but it may affect the stability and service life of the product.
2.  In the pharmaceutical field, impurities will affect the safety and effectiveness of drugs.

1. If used to prepare water-soluble glue, PVA with medium polymerization degree and high alcoholysis degree is usually selected, which can ensure good water solubility and suitable viscosity.
2. In the field of textile slurry, it may be necessary to select PVA of different specifications according to different textile processes and fiber materials.
3. For some applications with high requirements for water resistance, such as waterproof coatings, PVA with low alcoholysis degree may need to be selected.

1. Fluctuations in the price of raw materials (such as ethylene, vinyl acetate, etc.),
2. Complexity of the production process,
3. Market supply and demand

We supply any quantity, no MOQ, for PVA, different quantity different price due to it is tax refund product.

PVA should be stored in a dry, ventilated, and cool warehouse away from fire and heat sources. Avoid contact with chemicals such as acids and alkalis to prevent chemical reactions. The packaging should be kept intact during storage to prevent moisture absorption and contamination.