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Polyvinyl alcohol (MF: C2H4O, MW: 44.05256) is a solid that appears as a white powder, flakes, or fluff. Based on its degree of polymerization, it can be classified into ultra-high molecular weight (250,000–300,000), high molecular weight (170,000–220,000), medium-polymerization (molecular weight 120,000–150,000), and low-polymerization (molecular weight 25,000–35,000)
PVA exhibits chemical stability and resistance to mineral oils, fats, and weak acids and bases; it degrades in strong acids and softens in strong bases, and is reactive in ester exchange reactions. Its aqueous solution forms a tough, transparent, and elastic film upon drying; it possesses excellent adhesion to porous materials (paper, fibers, wood).
| Item | Specification |
| Melting Point | >300 °C |
| Boiling Point | -14.5 °C (rough estimate) |
| Bulk density | 400–670 kg/m³ |
| Density | 1.26–1.31 g/cm³ |
| Tg | 75–85 °C |
| Refractive Index | 1.3810 (estimate) |
| Solubility | Soluble in hot water (above 95 °C), slightly soluble in dimethyl sulfoxide, insoluble in most organic solvents (gasoline, benzene, acetone, etc.). |
| Hygroscopicity | Somewhat hygroscopic; equilibrium moisture content approximately 5%. |
Jinan Jinbang Chemical Co., Ltd., strategically located within the New Materials Industrial Park in Tianqiao District, Jinan City, Shandong Province, stands as a prominent chemical innovator since its establishment in 2015. Operating from a modern, expansive 37,500 m² manufacturing facility, we are dedicated to the research & development, production, and global distribution of high-performance chemical solutions.
We are always committed to delivering optimal chemical solutions for all application scenarios.
