CAS number： 9003-39-8
Molecular formula： C6H9NO)n
molecular weight： 111.143
Chemical structure：
| Product name | PVP K30 | |
| Shelf life | Three years | |
| Inspection Standard | USP34/NF29 | |
| Items | Specifications | Results |
| Appearance | White or yellowish-white hygroscopic powder or flakes. | Complies |
| Identification | An orange-yellow precipitate is formed. | Complies |
| A pale blue precipitate is formed | Complies | |
| A deep red colour is produced. | Complies | |
| Assay(Nitrogen) | 11.5~12.8% | 12% |
| Residue on ignition | ≤ 0.1% | 0.04% |
| Lead | ≤ 10ppm | ＜10ppm |
| Aldehydes | ≤ 0.05% | <0.05% |
| Peroxides（as H2O2) | ≤ 400ppm | 102ppm |
| Hydrazine | ≤ 1ppm | ＜1ppm |
| Vinylpyrrolidinone | ≤ 0.001% | 0.0006% |
| PH (1 in 20) | 3.0 ~ 7.0 | 3.4 |
| Water | ≤ 5.0% | 2.9% |
| K –Value | 27.0~32.4 | 29.8 |
Residual Solvents (Isopropanol Alcohol) | ≤ 0.5% | 0.2% |
| TAMC | ≤ 1000 cfu/g | 30cfu/g |
| TYMC | ≤ 100 cfu/g | 20cfu/g |
| Staphylococcus Aureus | Negative in 10g | Negative |
| Salmonella | Negative in 10g | Negative |
| Pseudomonas Aeruginosa | Negative in 10g | Negative |
| E. Coli | Negative in 10g | Negative |
| Conclusion | The product complies with USP34/NF29 standard. | |
