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CAS No.25249-54-1 product-1-1
Chemical Name: Insoluble Polyvinylpyrrolidone; PVPP
USP/EP Name: Crospovidone
Synonyms: Crospovidonum; crosslinked PVP
INCCTFA Name: Insoluble PVP
Grade: Food grade
Molecular Formula: (C₆H₉NO)n
Trade Name: Sunvidone CL(STD)

Characteristics

White or light yellow free-flowing powder
Hygroscopic
Odorless or with a slight characteristic odor
Insoluble in water, alkali, acid and general organic solvents
Easily swells in water but does not form a gel

Specification

	For beer and beverage industry	For the pharmaceutical industry (USP25)
Loss on drying (60 minutes, 140℃ vacuum)	≤6%	≤5
Water soluble components	≤1.5%	≤1.5
Residuals	≤0.1%	≤0.1%
PH of 1% solution	5.0-11.0	5.0-8.0%
Heavy metals		≤10ppm
Arsenic	3ppm	/
Lead	≤10ppm	/
Zinc	≤25ppm	/
Copper + zinc	≤50ppm	/
Nitrogen content	11.0-12.8%	12.0-12.8%
Sulfate ash	≤0.4%	≤0.2%

Application

● High-efficiency tablet disintegrant: can make all excipients swell at the fastest speed: effective in wet or dry granulation and direct tableting process; can be added before or after granulation, and its swelling effect and disintegration time are not affected by wetting and drying.
● Suspension stabilizer: reduces the particle sedimentation rate, increases the volume of the sedimentation layer, and improves the ability of sediment to be redispersed, suitable for instant dispersible and ready-to-drink dispersible dosage forms.
● Filtration aid: can be stably combined with tannins and polyphenols, and is used for the clarification and purification of plant drug extracts.

FAQ

1.How does PVPP play a role in beer clarification?
PVPP can adsorb polyphenolic compounds (such as tannins) in beer. When these compounds combine with proteins, they will cause turbidity in beer during storage.

2. Is PVPP safe?
PVPP is a chemically inert polymer substance that will not be absorbed or metabolized by the human body. Its use has been certified by multiple international agencies, including the European Food Safety Authority (EFSA) and the U.S. Food and Drug Administration (FDA).

3. What is the difference between PVPP and PVP?
PVP: water-soluble, used for thickening, film forming, etc.
PVPP: Insoluble in water, forming an insoluble polymer through a cross-linked structure, mainly used for adsorption and clarification.

4. Can PVPP be reused?
In some industrial applications, such as beer clarification, PVPP can be reused multiple times through filtration, washing and drying, which significantly reduces production costs.

5. What should we pay attention to when using PVPP?
Dosage control: The dosage of PVPP should be scientifically controlled according to the specific application scenario and the concentration of the target adsorbent.
Storage conditions: It should be stored in a dry, cool place to avoid moisture absorption leading to performance degradation.

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