CAS number: 9003-39-8
Molecular formula: (C6H9NO)n
molecular weight: 111.143
Chemical structure:
Product name | PVP K90 | |
Shelf life | Two years | |
Inspection Standard | USP32 | |
Items | Specifications | Results |
PH Value(5% aqueous solution) | 4.0-7.0 | 5.7 |
Water | ≤5.0% | 3.6% |
Heavy Metals(as Lead) | ≤10PPM | <10PPM |
Acetaldehyde | ≤0.05% | <0.05% |
Hydrazine | ≤1.0PPM | <1.0PPM |
N-Vinylpynrrolidinone | ≤10PPM | <10PPM |
K-Value | 81-96 | 93.5 |
Nitrogen content | 11.5-12.8% | 12.1% |
Residue on ignition | ≤0.1% | 0.05 |
Peroxide | ≤400PPM | <400PPM |
Conclusion | It conforms to USP32. |