Polyvinylpyrrolidone (PVP) is a polymer renowned for its exceptional versatility, but its effectiveness in various applications is highly dependent on its specific grade. The K-value, a measure of viscosity and molecular weight, is the primary differentiator among PVP grades, dictating its performance characteristics. NINGBO INNO PHARMCHEM CO., LTD., as a leading manufacturer and supplier of a wide range of PVP products, aims to help you navigate these choices. Understanding which PVP grade to buy is crucial for optimizing your formulations.

The K-value system for PVP, developed by Fikentscher, ranges typically from K-15 to K-90 and beyond. Each K-value corresponds to a specific average molecular weight and viscosity, which in turn influence its properties. For instance:

  • K-15 to K-25: These lower molecular weight grades are often preferred for applications requiring lower viscosity, such as certain cosmetic formulations, contact lens solutions, and as dispersants in inks. They offer good solubility and film-forming properties at lower concentrations.
  • K-30: This is one of the most widely used grades due to its balanced properties. It serves effectively as a binder in pharmaceutical tablets, a stabilizer in cosmetics, and a dispersant in various industrial products. If you're looking for a versatile all-rounder, consider our PVP K30 price and availability.
  • K-60 to K-90 and higher: These higher molecular weight grades exhibit increased viscosity and stronger film-forming and binding capabilities. They are ideal for applications demanding superior adhesion and thickening, such as strong-hold hairsprays, controlled-release pharmaceutical formulations, and as stabilizing agents in demanding industrial processes. As a premier Polyvinylpyrrolidone supplier in China, we ensure access to these high-performance grades.

The choice of PVP grade also depends on the solvent system and the desired interaction with other components in your formulation. For example, while all common PVP grades are water-soluble, their solubility and compatibility in organic solvents can vary. NINGBO INNO PHARMCHEM CO., LTD. is your trusted pharmaceutical grade Polyvinylpyrrolidone manufacturer, and we can guide you in selecting the optimal grade for your specific application. Whether you need low-viscosity PVP for sensitive formulations or high-viscosity grades for robust performance, we have the solution. Contact us to discuss your project requirements and discover how our quality PVP products can benefit your business.