Chinese alias: polyvinylpyrrolidone; Piviodide; Polyvinylpyrrolidine; Polyvinylpyrrolidone K-90 poly(vinylpyrrolidone); Polyvinylpyrrolidone; Kollidon K25; Kollidon K-90; pvp4; Kollidon 25; pvp3; pvp2; k25; POP; k115; K-30; PVPD; k60; PVP polyvinyl pyrrolidone (PVP), a non-ionic polymer, is the most distinctive and widely studied fine chemical variety among N-vinyl amide polymers. Has developed into non-ionic, cationic, anion 3 categories, industrial grade, pharmaceutical grade, food grade 3 specifications, relative molecular mass from thousands to more than one million homopolymer, copolymer and crosslinked polymer series products, and with its excellent unique properties have been widely used. Physical and chemical properties Density :1.144g/cm Boiling point :217.6°C Melting point :130°C Flash point :93.9°C Average molecular weight :8000-700000 Stability: stable solubility at room temperature and pressure: easily soluble in water and halogenated hydrocarbon solvents, alcohols, amines, nitroalkanes and low molecular fatty acids, insoluble in acetone, ether, turpentine, aliphatic hydrocarbons and alicyclic hydrocarbons and other solvents. It is compatible with most inorganic…