USP Specification
Items | Specifications |
Appearance | White or yellowish-white, hydroscopic powder or flakes |
Distinguish | A.IR |
B. An orange-yellow precipitate is formed | |
C. A pale blue precipitate is formed | |
D. A deep red color is produced | |
E. The substances dissolves | |
Appearance of Solution | Solution S is clear and not more intensely coloured than reference solution B6, BY6 or R6 |
Nitrogen content (odb) | 11.5% - 12.8% |
Ignition residue | ≤0.1% |
Lead | ≤10ppm |
Aldehydes | ≤0.05% |
Hydrazine | ≤1ppm |
N-Vinyl pyrrolidone | ≤0.001% |
2-Pyrrolidone | ≤3.0% |
Peroxides (Expressedas H2O2) | ≤400ppm |
Formic acid | ≤0.5% |
PH (50mg/ml in water) | 3.0-5.0 |
Water | ≤5.0% |
K-Vlue | 27.0-32.4 |
TAMC | ≤1000cfu/g |
TYMC | ≤100cfu/g |
Staphylococcus Aureus | Negative (10g) |
Salmonella | Negative (10g) |
Cosmetic Grade Specification
| ITEMS | SPECIFICATIONS |
| Appearance | White or yellowish-white powder |
| Odor | Slight characteristic odor |
| Identification | The substance dissolves. |
| Nitrogen | 11.5%~12 .8% |
| Residue on Ignition | ≤0.05% |
| pH(1.0g In 20ml) | 3.0~7.0 |
| Heavy. Metals | ≤10 ppm |
| As | ≤2 ppm |
| K-value | 27.0-33. 0 |
| Vinylpyrrolidinone | ≤0.01% |
| Loss on Drying. | ≤5.0% |
| Chromaticity | ≤80 |
Applications
PVP is also used in personal care products, such as shampoos and toothpastes, in paints,and adhesives that must be moistened, such as old-stylepostage stamps and envelopes.As a food additive, PVP is a stabilizer and has E number E1201.In molecular biology, PVP can be used as a blocking agent during Southern blot analysis as a component of Denhardt's buffer.In microscopy, PVP is useful for making an aqueous mounting medium.
Packing and Storage
Packing: 25kgs cardboard drum.
Storage: Keep container tightly closed in cool and well-ventilated place.
Safety Information
Not dangerous goods
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