Chemical name: Crosslinked Polyvinylpyrrolidone

CAS accession number: 25249-54-1

Specifications:

Appearance：white or white-like powder

Ahemical formula： (C6H9NO)n 

Molecular weight ：111.142 

Density  g/cm3： 1.144 

Melting point  ℃： 300 

Boiling point  ℃ ：217.6 

Refractive index： 1.593 

Moisture  % ≤： 6.0 

Water- soluble matter  % ≤ ： 0.5 

Free-N-vinylpyrrolidone ppm  ≤ ：10 

N,N-divinyl-imidazolinone ppm  ≤  ：  2 

PH(in 1% water)：5-8 

Heavy metal   ppm ≤ ：10 

Nitrogen content  % ：11.0-12.8 

Sulphated Ash  % ≤  ：0.4 

Peroxide  ppm ≤： 400 

Lead content  ppm ≤ ：2 

Arsenic content  ppm ≤： 2 

◆Nature:white or nearly white, hygroscopic and easy-to-flow powder, odorless or slightly smelly, insoluble in water, strong alkali, strong acid and ethanol, chloroform or ether, etc;

commonly used organic solvents have light expansibility, excellent physiological inertness, biocompatibility and good complexation ability with various substances.

◆Application:is widely used in brewing and beverage industries as a clarifying agent and stabilizer for beer, fruit wine and fruit juice;

is suitable for any kind of beer (red wine, fruit juice, etc.), improves color and taste, has no adverse effect on foam and taste, and can prolong storage period.

◆Storage method:should be sealed and stored in a clean and dry warehouse, and attention should be paid to fire prevention, waterproof, sun protection, dust prevention and pollution prevention.

　　What is PVPP

　　Crosslinked polyethylpyrrolidone (PVPP) is a kind of crosslinked polymer, which is insoluble in water, strong acid, strong base and general organic solvent, and is white or milky powder or particle.

　　Crosslinked POvidone is one of the three super disintegrators, but it can not only be widely used as medicinal excipients in pharmaceutical preparations, but also as a food additive used in the processing and production of beer, red wine, juice and other drinks, so it has another name - insoluble polyethylpyrrolidone (PVPP).

　　PVPP function

　　As a stabilizer for beer, liquor, grape juice and fruit juice and other beverages, extend its storage period.

　　It can form hydrogen bond complex precipitation with phenols such as anthocyanins and flavonoid polyhydroxyl derivatives through carbonyl groups, thereby removing the non-biological turbidity of alcohol, achieving clarification and stability, and maintaining the original taste and flavor of the beverage.

　　It is completely insoluble in beer (red wine, juice, etc.) and suitable for any kind of beer (red wine, juice, etc.), improves color and taste, and has no adverse effect on foam and flavor, and can extend its shelf life.

　　It can also be used in combination with enzymes (proteases) and protein adsorbents to remove allergens.

　　Adsorption mechanism of PVPP

　　PVPP mainly selects complex cloudy polyphenols through very strong hydrogen bonds and a large number of attachment points. The molecular structure of the polymer limits the internal hydrogen bonds and maximizes the number of possible reaction sites to reduce the required level of PVPP addition in beer. After the addition of PVPP to the wine body, the insoluble PVPP-polyphenol complex can be removed through a diatomaceous earth filter. PVPP, which is insoluble in beer itself, has a long history of safe use in the beverage industry and has been recognized by the German beer Pure control law, Reinheitsgebot. As an insoluble process accessory, it does not need to be indicated on the label. PVPP is chemically inert and non-toxic. In addition, PVPP does not require any special treatment requirements and is usually carried out at the same time as the treatment of waste diatomaceous earth.

　　How to use PVPP

　　The PVPP is prefabricated into 8-12% slurry with deoxidized water, and it is left for about 1 hour to make the particles of PVPP fully absorb water and spread out, improve the adsorption efficiency, mix it alone or with other additives such as diatomaceous earth and add it to beer, and fully contact for more than 5-10 minutes after the adsorption is completed, the beer can be completely removed from the PVPP in the body.

　　PVPP product price 78 yuan -90 yuan/kg, according to market fluctuations monthly price has been adjusted, purchase please consult Shanghai art letter customer service.