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molecular weight：
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| Product name | PVP VA64 | ||
| Shelf life | Three years | ||
| Inspection standard | USP | ||
| Items | Specification | Reference | Results |
| Appearance | White or yellowish-white,hygroscopic powder or flakes. | TM-A25S03 | Complies |
| Appearance of Solution | The solution is clear or slightly opalescent and colorless to pale yellow or pale red. | TM-A25S03 | Complies |
| Identification | IR | GM-029. | Complies |
| A deep red colour is produced. | TM-A25S03 | Complies | |
| K Value | 25.2-30.8 | GM-002 | 29.3 |
| pH（1.0g→20.0ml） | 4.2 ~ 5.6 | GM-003 | 5.3 |
| Assay | |||
| Vinyl acetate | 35.3~41.4% | GM-012 | 37.1% |
| Nitrogen | 7.0~8.0% | GM-018 | 7.2% |
| Residue on ignition | ≤0.1% | GM-007 | 0.04% |
| Heavy Metals | ≤20 PPM | GM-052 | ＜20 PPM |
| Aldehydes | ≤0.05% | GM-006 | 0.01% |
| Hydrazine | ≤ 1ppm | GM-025 | ＜1ppm |
| Peroxides (as H2O2) | ≤0.035% | GM-009 | 0.004% |
| Residual Solvents（isopropyl alcohol） | ≤0.5% | GM-037 | 0.1% |
| Monomers | |||
| 1-vinyl-2-pyrrolidone | ≤ 0.001% | GM-030 | 0.0003% |
| Vinyl Acetate | ≤ 0.001% | GM-030 | 0.0004% |
| 2-pyrrolidone | ≤0.5% | GM-030 | 0.1% |
| Water（KF） | ≤ 2.3% | GM-001 | 1.1% |
| TAMC | ≤ 100 cfu/g | GM-518 | 30cfu/g |
| TYMC | ≤ 100 cfu/g | GM-519 | 20cfu/g |
| Staphylococcus Aureus | Negative in 10g | GM-523 | Negative |
| Salmonella | Negative in 10g | GM-521 | Negative |
| Pseudomonas Aeruginosa | Negative in 10g | GM-522 | Negative |
| E. Coli | Negative in 10g | GM-520 | Negative |
| Conclusion | The product complies with USP standard. | ||
