| ≥1 piece |
PVPP is a highly cross-linked version of PVP, which makes it insoluble in water but it still absorbs water and swells very rapidly and generate a swelling force. That is why it can be used as a disintegrant in tablets . It is also used to bind impurities to remove them from solutions. It is also used as a fining to extract impurities (via agglomeration followed by filtration). Using the same principle it is used to remove polyphenols in beer production and thus clear beers with stable foam are produced. [7] PVPP can be used as a drug, taken as a tablet or suspension to absorb compounds (so-called Endotoxins ) causing diarrhoea . ( Cf. bone char , charcoal .)