Insoluble Polyvinylpolypyrrolidone (PVPP)
Molecular Formula: C₆H₉NO
CAS No.: 25249-54-1
Product Characteristics:
White hygroscopic powder. Insoluble in water, acids, alkalis, and organic solvents. Exhibits strong swelling and complexing properties.
Applications:
Beverages: Stabilizer for beer, wine, and juices (extends shelf life).
Pharmaceuticals: Disintegrant and filler for tablets, capsules, and granules.
Specifications:
|
Item |
Standard |
Test Method |
|
Appearance |
White hygroscopic powder |
GB 1886.73-2015 |
|
Nitrogen Content (%) |
11.0–12.8 |
GB 1886.73-2015 |
|
Residual N-Vinylpyrrolidone (mg/kg) |
≤10.0 |
GB 1886.73-2015 |
|
pH (1% suspension) |
5.0–8.0 |
GB 1886.73-2015 |
|
Water-Soluble Matter (%) |
≤1.5 |
GB 1886.73-2015 |
|
Ash Residue (%) |
≤0.4 |
GB 1886.73-2015 |
|
Residual N,N'-Divinylimidazolidone (mg/kg) |
≤2.0* |
GB 1886.73-2015 |
|
Moisture (%) |
≤6.0 |
GB 1886.73-2015 |
|
Lead (Pb) (mg/kg) |
≤2.0 |
GB 5009.12 |
|
Zinc (Zn) (mg/kg) |
≤25.0 |
GB 5009.14 |
|
*Tested only for products using N,N'-divinylimidazolidone as crosslinker. |
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