Povidone, commonly known as PVP or Polyvinylpyrrolidone, is a family of water-soluble polymers that offer a wide range of properties based on their molecular weight and viscosity. NINGBO INNO PHARMCHEM CO.,LTD. provides insight into these variations, with a particular focus on Povidone K90, and how its specific grade determines its optimal applications.

The 'K' value in Povidone nomenclature, such as in PVP K90, refers to the Fikentscher K value, which is a measure of the polymer's intrinsic viscosity in solution. This value is directly related to the polymer's molecular weight. Generally, a higher K value indicates a higher molecular weight and, consequently, increased viscosity and stronger adhesive properties. Povidone K90, with its K-value typically ranging from 88-96, represents a high molecular weight grade.

This high molecular weight and viscosity of Povidone K90 make it particularly effective as a strong binder in pharmaceutical tablet formulations. It allows for lower percentages of the excipient to achieve robust tablet integrity, offering formulators greater flexibility. In cosmetics, its film-forming and adhesive properties are amplified, making it ideal for hair styling products that require strong hold and longevity. Its ability to create a firm, glossy film is a key advantage.

Lower molecular weight grades, such as PVP K15 or K30, have lower viscosities and are often used as solubilizing agents, dispersants, or for applications where a less viscous solution or film is desired. For example, PVP K30 is commonly used in oral suspensions and as a binder in less demanding tablet formulations. PVP K15 might be preferred for eye drops or solutions requiring minimal viscosity.

Choosing the correct Povidone grade is crucial for achieving the desired product performance. NINGBO INNO PHARMCHEM CO.,LTD. offers a comprehensive range of Povidone products to meet diverse needs. Understanding the nuances of each grade, particularly the characteristics of Povidone K90 for high-strength binding and film-forming applications, is essential for successful formulation. When you are looking to buy Povidone K90 or other PVP grades, our expertise and product availability ensure you find the right solution. As a leading PVP K90 supplier, we are dedicated to providing high-quality materials that meet global standards.

By understanding the relationship between K-value and application, manufacturers can effectively leverage the unique properties of each Povidone grade, with Povidone K90 offering unparalleled strength and binding in its class.