Polyvinylpyrrolidone

Product Description

1. Basic Information

Chemical Name: Polyvinylpyrrolidone
Common Acronym: PVP
Other Names: Povidone (Pharmacopeial name), Polyvidone
CAS Registry Number: 9003-39-8
Chemical Structure: A water-soluble synthetic polymer composed of repeating N-vinylpyrrolidone monomer units. It is typically characterized by its K-value (a viscosity-based index related to its average molecular weight, e.g., PVP K30).


2. Key Characteristics

Appearance: White to creamy-white hygroscopic powder or flakes.

Solubility: Freely soluble in water and various polar organic solvents (e.g., alcohols, chloroform).

Key Properties: Excellent film-forming, adhesive, suspending, and dispersing capabilities. It is physiologically inert, non-toxic, and exhibits strong complexation with many substances.

Stability: Chemically stable, though hygroscopic. Compatible with a wide range of other chemicals.

• Test Items	Specification
  Appearance	White to milky white powdery solid
  Identification A.B.C.	Positive
  K value	27-32
  Moisture,%	≤5.0
  Residue on ignition,%	≤0.1
  PH of 5% aqueous solution	3.0-7.0
  1-Vinylpyrrolidin-2-one,%	≤0.1
  Nitrogen,%	11.5-12.8
  Aldehyde,%	≤0.05
  Heavy metal,ppm	≤10
  Hydrazine,ppm	≤1.0
  Peroxide,ppm	≤400

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