what is polyvinylpyrrolidone
Polyvinylpyrrolidone
【 Basic Description 】 :
Packing specification: 25kg/ round cardboard drum
Appearance and properties: white or milky white powder or particles, is a hygroscopic and easy to flow powder, odorless or slightly odorless, soluble in water,alkali, acid and polar organic solvents, with strong expansion performance and complex ability with many kinds of substances.
Chinese name: Polyvinylpyrrolidone, polyvinyl alcohol pyrrolidone, polyvinylpyrrolidone, POvidone, Pividiodide, polyvinylpyrrolidone series,polyvinylpyrrolidone/POvidone
English name: Polyvinylpyrrolidone, English abbreviation: PVP
Molecular formula (C6H9NO)n
Molecular weight: 5 000 ~ 700 000
Name classification: K15, K17, K30, K90, etc
【 Basic characteristics 】 :
Polyvinylpyrrolidone (PVP) is odorless, tasteless white powder or transparent solution, soluble in water, chlorine-containing solvents, ethanol, amines,nitroalkanes and low molecular fatty acids, compatible with most inorganic salts and a variety of resins, insoluble in acetone, ether, etc. Under normal conditions, PVP solid and solution are very stable, PVP has film formation and hygroscopicity, its film is colorless and transparent, hard and bright, adding some natural or synthetic polymer or organic compounds can effectively adjust the hygroscopicity and softness of PVP. PVP has a strong bonding ability and is easily adsorbed on the surface of colloidal particles to protect colloids, and can be widely used as a stabilizer for emulsions and suspensions. The lactam structure of PVP makes it complexed with many polar functional groups. PVP has excellent physiological inertia and biocompatibility, no irritation or sensitization to eyes and skin, non-toxic, and LD50>13.0g/kg after acute oral and intraperitoneal injection.
Purpose :
PVP-K series products are widely used in medicine, daily chemicals, beverages, binders, synthetic resins, textile printing and dyeing, detergents, pigments,coatings, dyes, electronic information materials, biological engineering materials and other fields.
PVP is widely used as thickener, emulsifier, wetting agent and adhesive in daily chemical products, which can make the product pure and easy to color. PVP and its copolymer CAP is an important raw material of daily chemicals, mainly used for hair style retention agent, it forms a film on the hair elastic and shiny,excellent combing performance, no dust, using different specifications of resin, can meet a variety of relative humidity climate conditions, so it is an indispensable raw material such as hair cream, hair gel, mousse and so on. It can also be used as skin care moisturizer and fat cream base for daily chemicals,hair dye dispersant, foam stabilizer, and can improve the consistency of shampoo.
PVP is widely used in medicine and is one of the three new pharmaceutical excipients advocated internationally. Widely used are adhesives for tablets and granules. PVP can also be used as a flow aid for capsules, detoxification and lubricant for eye drugs, co-solvent for injections, dispersant for liquid preparations and colorants, stabilizer for enzymes and heat-sensitive drugs, precipitant for insoluble drugs, detoxification and lubricant for eye drugs, etc. PVP can also synthesize PVP-I disinfectant with iodine. PVP can also be used as a cryogenic preservative in medicine. In the pharmaceutical industry, PVP excipients have been used in hundreds of drugs.
PVP can be used as surface coating agent, dispersant, thickener and adhesive in pigment, printing ink, textile, printing and dyeing, color picture tube. PVP can improve the bond performance of binder to metal, glass, plastic and other materials, and PVP in the separation film, medical polymer materials, light solid resin,light solid coating, optical fiber, laser disc and other emerging high-tech fields are increasingly widely used.
[Storage conditions] : Heat insulation, moisture, light storage.
Specifications:
Industrial grade
| project | K value | Residual Single % | moisture% | solid content% | PH value | ash specification% |
| K12(liquid) |
10-13
|
≤0.2
|
–
|
40±1
|
7-9
|
≤0.1
|
| K15(liquid) | 13-17 | ≤0.2 | – | 40±1 | 7-9 | ≤0.1 |
|
K15(powder)
|
13-18
|
≤0.2
|
≤5.0
|
≥95
|
3-7
|
≤0.1
|
| k17(powder) | 15-19 |
≤0.2
|
≤5.0 | ≥95 | 3-7 | ≤0.1 |
|
K17(liquid)
|
15-19
|
≤0.2 |
–
|
40±1
|
7-9
|
≤0.1
|
| k25(powder) | 22-28 |
≤0.2
|
≤5.0 | ≥95 | 3-7 | ≤0.1 |
| k30(liquid) | 27-33 | ≤0.2 | – | 30±1 | 7-9 | ≤0.1 |
| k30(powder) | 27-33 | ≤0.2 | ≤5.0 | ≥95 | 3-7 | ≤0.1 |
| k60(liquid) |
52-62
|
≤0.2
|
–
|
38-42
|
6-9
|
≤0.1
|
| k90(powder) |
81-94
|
≤0.2
|
≤5.0
|
≥95
|
5-8
|
≤0.1
|
| k90(liquid) | 81-97 | ≤0.2 | – | 20±1 | 6-9 | ≤0.1 |
| K120(liquid) | 110-125 | ≤0.2 | – | 15±1 | 7-9 | ≤0.1 |
Pharmaceutical grade (CP2005/USP26, USP28 USP30 USP31 USP32 EP)
| project | K value | Residual Single % | moisture% | ash specification% | PH value | nitrogen content% | Aldehyde content %(in acetaldehyde)ppm | heavy metal ppm | Hydrazine ppm | ppm peroxide |
|
K15(powder)
|
13-17
|
≤0.1
|
≤5.0
|
≤0.1
|
3-7
|
11.5-12.8
|
≤500 | ≤10 |
≤1
|
≤400 |
| k17(powder) | 15-19 | ≤0.1 | ≤5.0 | ≤0.1 | 3-7 | 11.5-12.8 | ≤500 | ≤10 |
≤1
|
≤400 |
| k25(powder) | 22-28 | ≤0.1 | ≤5.0 | ≤0.1 | 3-7 | 11.5-12.8 | ≤500 | ≤10 |
≤1
|
≤400 |
| k30(powder) | 27-32 | ≤0.1 | ≤5.0 | ≤0.1 | 3-7 | 11.5-12.8 | ≤500 | ≤10 |
≤1
|
≤400 |
| k90(powder) |
81-94
|
≤0.1
|
≤5.0
|
≤0.1
|
5-8
|
12.0-12.8
|
≤500
|
≤10
|
≤1
|
≤400
|
English 
Korean