Polyvinylpolypyrrolidone Pvpp 25249-54-1,9003-39-8

Molecular formula: (C6H9NO)n＞1000000

Cross-linked polyvinylpyrrolidone is a water-insoluble synthetic cross-linked N-vinyl-2-pyrrolidone homopolymer. Due to the water insolubility of the material itself, the exact molecular weight has not yet been determined.

General properties: pH: pH=5.0～8.0 (1% w/v aqueous suspension)

Density: 1.22g/cm3

Water content: Maximum water absorption is close to 60%

Solubility: Almost insoluble in water and common organic solvents

Pharmacopoeia standards: It has been included in the 28th edition of the United States Pharmacopoeia, the 5.0 edition of the European Pharmacopoeia and the 2010 edition of the Chinese Pharmacopoeia.

Quality standard: Meet CP2010 USP28/NF23 EP7.0

Item EP7.0 USP28/NF23 CP2010

Identification ﹢ ﹢ ﹢

Properties ﹢ － ﹢

Acid value (1%W/W dispersion) 5.0～8.0 － 5.0～8.0

Water content － ≤5.0% ≤5.0%

Residue on ignition ≤0.1% ≤0.4% ≤0.1%

Degree of substitution 0.60～0.85 0.60～0.85 0.60～0.85

Soluble matter in water ≤1.0% ≤1.5% ≤1.0%

Peroxide ≤400ppm － ≤400ppm

Microbial contamination － - ﹢

Content 11.0%～12.8% 11.0%～12.8% 11.0%～12.8%

Heavy metals ≤10ppm ≤10ppm ≤10ppm

Arsenic salts － － ≤2ppm

Pharmaceutical application: due to the high molecular weight and cross-linked structure of cross-linked povidone, insoluble in water but can quickly promote its network structure to expand and disintegrate when exposed to water, it is widely used as a disintegrant for tablets in medicine, and is also widely used as a suspension stabilizer, a complexing agent for pharmaceutical ingredients, and a complexing agent for tannins and polyphenols in plant drugs.

Food applications: PolyFilterTM molecules have amide bonds and adsorption of hydroxide groups on polyphenol molecules to form hydrogen bonds, so they can be used as stabilizers for beer, fruit wine/wine, and beverage wines, extending their shelf life, and improving their clarity, color, and taste. The product is available in both disposable and regenerative specifications, and the disposable product is suitable for small and medium-sized enterprises; Recycled products require the purchase of special filtration equipment, but they can be recycled and suitable for recycling in large breweries.

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