PolyvinylpyrrolIdone(Povidone)
CHEMICAL NAME:POLYVINYLPYRROLIDONE (POVIDONE)
CODE NAME:PVP
CAS No:9003-39-8
MOLECULAR FORMULA: (C6H9NO)n
Chemical structural formula:
PROPERTIES:White or yellow-white powder or clarifies transparently and the thick solution, easy to dissolve in the water, mellow, in the amine and the halohydrocarbon, does not dissolve in the acetone, the ether and so on. Has the fine solubility, the biological intermiscibility, the physiological inertia, Cheng Moxing, membrane body protection ability and many kinds of organic, inorganic compound compound ability, the para acid, the salt and hot stable, therefore has the widespread use.
QUALITY SPECIFICATION OF TECH. GRADE
| NAME | K-VALUE | Vinylpyrrolidone% | Water% | Residue on ignition% | JSolid content% | PH（5%in aqueous solution） |
| k15 | 12.8~17.2 | ≤0.2 | ≤5.0 | ≤0.1 | ≥95 | 3.0~7.0 |
| K30 | 27.0~32.4 | ≤0.2 | ≤5.0 | ≤0.1 | ≥95 | 3.0~7.0 |
| K30( Solution) | 27.0~32.4 | ≤0.2 | ≤5.0 | ≤0.1 | 30±1 | 5.0~8.0 |
| K90 | 81.0~97.2 | ≤0.2 | ≤5.0 | ≤0.1 | ≥95 | 5.0~9.0 |
| K90( Solution) | 90.0~103.0 | ≤0.2 | ≤5.0 | ≤0.1 | 20±1 | 7.0~10.5 |
Application of Tech. grade PVP
PVP is mainly used in the industry in cosmetics, ink, ink, paper and other office supplies, organic pigments, coatings, printing and dyeing.
QUALITY SPECIFICATION OF PHAR. GRADE (CP2005,USP26,EP4.0)
| NAME | K-VALUE | Vinylpyrrolidone% | Water% | Residue on ignition% | PH | Nitrogen Conten% | Aldehydes% | Lead% | Hydrazine PPM | Peroxide PPM |
| K15 | 12.8~17.2 | ≤0.2 | ≤5.0 | ≤0.1 | 3.0~7.0 | 11.5~12.8 | ≤0.05 | ≤0.001 | ≤1 | ≤400 |
| k30 | 27.0~32.4 | ≤0.2 | ≤5.0 | ≤0.1 | 3.0~7.0 | 11.5~12.8 | ≤0.05 | ≤0.001 | ≤1 | ≤400 |
| k90 | 81.0~97.2 | ≤0.2 | ≤5.0 | ≤0.1 | 3.0~7.0 | 11.5~12.8 | ≤0.05 | ≤0.001 | ≤1 | ≤400 |
Application of Phar. Grade PVP：
Povidone has broad application in pharmaceutical field, as an international advocate for one of the three new accessories for medicinal. Most widely used is tablets, granules of adhesives. It can also be used as a capsule of flow aid, to agent and lubricant eye drops, injections help solvent, liquid preparations distributed agents, enzymes and stabilizer for heat-sensitive medicines. Povidone-iodine and synthesis of povidone-iodine (PvP-I) disinfection and bactericide. Contact lenses, PVP as an element of contact lenses, can increase its hydrophilicity. PVP in medicine can also be used as a preservation agent