polyvinylacetate, 76.0-82.0% (saponification value * 0.1534) povidone, 18.0-21.0 (N content/0.126)
impurities
≤100 ppm vinyl acetate ≤20 ppm heavy metals (verified on random samples only) ≤5000 ppm residual solvents (acetic acid, acetate, formic acid (GLC)
ign. residue
≤1.7% (verified on random samples only)
loss
≤4.0% loss on drying
pH
4.0-5.0 (10% in H2O)
General description
The Kollidon products consist of soluble and insoluble grades of polyvinylpyrrolidone (PVP) of various molecular weights and particle sizes. The polymers are used as dry binders, film-formers, stabilizers in suspensions, dispersants for pigments, enzyme stabilizers, and for improvement of bioavailability.
Application
Kollidon SR is a blend of polyvinyl acetate and povidone (K 30) in the ratio 8:2 used in the pharmaceutical industry as a matrix-forming agent. This research grade product is intended for use in R&D and development only.
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