FormPhysical and Chemical Properties
Density: 1.144 g/cm³
Boiling point: 217.6°C
Melting point: 130°C
Flash point: 93.9°C
Average molecular weight: 8,000–700,000
Stability: Stable at room temperature and normal pressure
Solubility: Highly soluble in water, halogenated hydrocarbon solvents, alcohols, amines, nitroalkanes, and low-molecular-weight fatty acids; insoluble in acetone, diethyl ether, turpentine, alkanes, and alicyclic hydrocarbons. It is compatible with most inorganic acid salts and various resins.
Properties: A hydrophilic, free-flowing white or nearly white powder with a faint odor
Applications
As a synthetic water-soluble polymer, PVP possesses the general properties of water-soluble polymers, including colloidal protection, film-forming ability, adhesion, hygroscopicity, and solubilizing or flocculating effects. However, its most distinctive features—and the reasons it is highly valued—are its excellent solubility and physiological compatibility. Among synthetic polymers, it is rare to find one like PVP that is soluble in both water and most organic solvents, has very low toxicity, and exhibits good biocompatibility. This is particularly true in fields closely related to human health, such as pharmaceuticals, food, and cosmetics. As the price of its raw material, lactone, continues to decline, PVP is sure to demonstrate promising prospects for future development. The following provides a detailed overview of its application areas.
