PVPP series
Chemical Structure : Polyvinylpyrrolidone
CTFA Nomenclature : Insoluble PVP
Physical Properties : Exists as white or slight yellow, free flowinghydroscopic powder with odorless or faint characteristic smell. It¡¯s insoluble in water, alkali, acid and common organic reagents.Stereoscan photographs show that it is voluminous particulars and has large total surface and lots of porosity which is between 2~10nm. It can swell in water easily and can complex with polyphenol, carboxylic acids and other low molecular weight compounds. PVPF can only be used once and PVPR can be reused after regenerated.
Specification:
Catalog of Product |
moisture % |
soluble
compound% |
NVP % |
PH
(1%
in water)
|
Heavymetal PPM |
Nitrogen % |
Sulfate
Ash%
|
arsenic |
lead |
zinc |
copper+zinc |
PVPP-F |
<6 |
<1.5 |
<0.01 |
6–8 |
<3 |
<10 |
<25 |
<50 |
11.0–12.8 |
<0.4 |
PVPP-R |
<6 |
<1.5 |
<0.01 |
6–8 |
<3 |
<10 |
<25 |
<50 |
11.0–12.8 |
<0.4 |
| Application: |
→Used as stabilizer for beer, wine, vinegar and many juice and
beverage to prolong their storage life |
| |
→Used as disintegrant for tablet pill, partical-like granule and capsule
drug in pharmaceutical industry |
|
