Povidone K90

White to milky white powder, odorless or slightly peculiar odor. Soluble in water, methanol or ethanol, slightly soluble in acetone, insoluble in ether. It has good hygroscopicity, film-forming, complexing and physiological compatibility, and has the ability to complex with a variety of organic and inorganic compounds, and is stable to acid, salt and heat.

English Abbreviation: PVP K90
CAS No.: 9003-39-8

Category: Pharmaceutical Excipients

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PRODUCT DETAILS

Product Description

White to milky white powder, odorless or slightly peculiar odor. Soluble in water, methanol or ethanol, slightly soluble in acetone, insoluble in ether. It has good hygroscopicity, film-forming, complexing and physiological compatibility, and has the ability to complex with a variety of organic and inorganic compounds, and is stable to acid, salt and heat.

Quality Index

Viscosity (in K)：	81.0-97.2
Viscous average molecular weight (VAMW)：	1000000-1500000
PH (5% aqueous solution)：	3.0-7.0
Aldehydes (as acetaldehyde)：	≤500ppm
Peroxides (as H2O2)：	≤400ppm
Formic acid	≤0.5%
Hydrazine：	≤1ppm
N-Vinyl-2-pyrrolidone	≤10ppm
A-pyrrolidone：	≤3%
Moisture：	≤5.0%
Sulfated ash：	≤0.1%
Nitrogen content：	11.5%-12.8%
Heavy metals (as lead)：	≤10ppm

Main functions

porogenic agent, thickener, binder, stabilizer and so on.

Application

• Used as binder for tablets, stabilizer for enzyme and heat-sensitive drugs, and co-precipitant for insoluble drugs in pharmaceutical field;

• Used as adhesive for solid glue stick in the field of adhesive to replace PVA solid glue stick which is easy to contain formaldehyde;

• Used as the adhesive of antipyretic patch and the porogenic agent of dialysis membrane in the field of medical devices;

• Used as porogenic agent of water treatment membrane and hydrophilic modifier in membrane industry;

• Used as a film-forming agent in the sizing process of glass fibers, used as a chemical crosslinking agent in the water-based coating system in the manufacture of CRTs by negative lithography technology.

• Used as colloidal protective agent for emulsion synthesis, ceramic binder, thickening agent in metal quenching solution, film-forming agent for seed coating, etc.