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polyvinyl pyrrolidone (K90)

Brand : EASTCHEM

Origin : China

Delivery time : One week

Supply capacity : 5000MT per annum

Purity : ≥99.0

cas no. : 9003-39-8

Polyvinylpyrrolidone (PVP), also commonly called polyvidone or povidone, is a water-soluble polymer made from the monomer N-vinylpyrrolidone.


polyvinyl pyrrolidone


polyvinylpyrrolidone k90


Product Name

polyvinyl pyrrolidone

CAS No.

9003-39-8

Density

1.144g/cm3

Molecular Formula

C6H9NO

Boiling point

217.6°C

Melting point

130°C

Flashing point

93.9°C

Stability

Stable. Incompatible with strong oxidizing agents. Light sensitive. Hygroscopic.

Appearance

White powder

Storage

Store at RT.



index(K90)

USP26

EP7.0/USP36

k-value

81-97.2

81-97.2

NVP residual order (capacity method)%≤

0.2

NVP residual (liquid chromatography) ppm≤

10

Moisture %≤

5

5

PH value (5% aqueous solution)

3.0-7.0

4.0-7.0

Sulfate ash%≤

0.1

0.1

nitrogen content %≤

11.5-12.8

11.5-12.8

2-pyrrolidone%≤

3

Formic acid%≤

0.5

Aldehyde (in the form of acetaldehyde) ppm≤

500

500

Heavy metals (by lead) ppm≤

10

10

hydrazine ppm≤

1

1

Peroxide (measured by hydrogen peroxide) ppm≤

400


polyvinyl pyrrolidone K90


Polyvinylpyrrolidone, PVP is a non-ionic high molecular polymer. PVP is classified according to its average molecular weight. It is customarily used to indicate the K value. Different K values represent different PVP average molecular weight ranges. The K value is actually a characteristic value related to the relative viscosity of the PVP aqueous solution, and the viscosity is a physical value related to the molecular weight of the high molecular polymer. Therefore, the K value can be used to characterize the average molecular weight of PVP. Generally, the K value is more Large, the greater the viscosity.

Industrial applications of PVP include use as an adhesive to improve strength and thickness; increase strength in paper production; use as a resin coating; improve dye coloration in synthetic fibers; also commonly used in inks, imaging, lithography, detergents and soaps , textiles, pottery, electricity, metallurgy, and as a polymerization additive.

PVP is also widely used in the pharmaceutical industry due to its excellent adhesion, film formation, dispersion and thickening properties.

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