CAS number： 9003-39-8
Molecular formula： (C6H9NO)n
molecular weight： 111.143
Chemical structure：
| Product name | PVP K25 | |
| Shelf life | Three years | |
| Inspection Standard | USP26 | |
| Items | Specifications | Results |
| K value | 22-28 | 26.05 |
| Moisture % | ≤5.0 | 3.45 |
| PH Vaiue(5% in water) | 3-5 | 3.79 |
| N-Vinylpyrrolidone % | ≤0.1 | 0.045 |
| Residue on lgnition % | ≤0.1 | 0.016 |
| Nitrogen % | 11.5-12.8 | 12.06 |
| Acetaldehyde % | ≤0.05 | ＜0.05 |
| Heavy metals(as Pb) ppm | ≤10 | ＜10 |
| Hydrazine ppm | ≤1.0 | ＜1.0 |
| as H2O2 ppm | ≤400 | ＜400 |
| Conclusion | THIS PRODUCT MEETS THE REQUIREMENTS FOR USP26 | |
