1. Stability: Stability at room temperature and pressure
2. Solubility: It is very soluble in water and halogenated hydrocarbon solvents, alcohols, amines, nitroalkanes and low molecular fatty acids, and insoluble in acetone, ether, turpentine, aliphatic hydrocarbons and alicyclic hydrocarbons. It can be compatible with most inorganic salts and resins.
3. Character: It is hydrophilic and easy to flow white or nearly white powder with slight odor.
4. Pure cross-linked homopolymer of vinyl pyrrolidone. Polyvinylpyrrolidone (PVP) is capable of complexing with a variety of substances, such as quinones, which cause the discoloration of beverages such as wine. Because of its insolubility, it is easy to remove after filtration.
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