CAS number： 9003-39-8
Molecular formula： (C6H9NO)n
molecular weight： 111.143
Chemical structure：
| Product name | PVP K17 | |
| Shelf life | Three years | |
| Inspection Standard | EP7.2 | |
| Items | Specifications | Results |
| Appearance | White or yellowish-white,hygroscopic powder or flakes. | Complies |
| Identification | IR | Complies |
| The substance dissolves. | Complies | |
| Appearence | Solution S is clear and not more intensely coloured than reference solution B6,BY6or R6 | Complies |
| pH（1.0g→20.0ml） | 3.0 ~ 5.0 | 3.97 |
| Viscosity (as K Value) | 15.3~18.4 | 17 |
| Aldehydes | ≤ 500ppm | 33ppm |
| Peroxides (as H2O2) | ≤ 400ppm | 34ppm |
| Formic Acid | ≤ 0.5% | 0.1% |
| Hydrazine | ≤ 1ppm | ＜1ppm |
| ImpurityA(Vinylpyrrolidone) | ≤ 10ppm | 9.22ppm |
| Impurity B (2-pyrrolidone) | ≤ 3.0% | 1.2% |
| Heavy Metals | ≤ 10ppm | ＜10ppm |
| Water | ≤ 5.0% | 2.91% |
| Sulphated Ash | ≤ 0.1% | 0.04% |
| Assay(Nitrogen) | 11.5~12.8% | 12.05% |
| Bacterial endotoxines | ≤ 0.1EU/mg | 0.07EU/mg |
| TAMC | ≤ 1000 cfu/g | ＜100cfu/g |
| TYMC | ≤ 100 cfu/g | ＜100cfu/g |
| Staphylococcus Aureus | Negative in 1g | Negative |
| Salmonella | Negative in 10g | Negative |
| Pseudomonas Aeruginosa | Negative in 1g | Negative |
| E. Coli | Negative in 1g | Negative |
| Conclusion | The product complies with EP7.2 standard. | |
