NINGBO INNO PHARMCHEM CO.,LTD. provides Polyvinylpyrrolidone (PVP) K90, a polymer whose specific chemical properties dictate its extensive applications. Understanding these characteristics, including its K-value, solubility, and stability, is crucial for formulators aiming to harness its full potential.

PVP K90 is a non-ionic, water-soluble polymer synthesized from the monomer N-vinylpyrrolidone. Its molecular structure, characterized by the lactam ring, imparts a high polarity, enabling it to form complexes with a wide range of substances, including hydrogen donors, anionic dyes, and inorganic salts. This complex-forming ability is fundamental to many of its applications, such as acting as a stabilizer or aiding in purification processes.

A defining feature of PVP is its K-value, a measure related to its molecular weight and viscosity. The K-value for PVP K90 typically ranges from 88.0 to 96.0, indicating a higher molecular weight compared to lower K-value grades. This higher molecular weight translates to greater viscosity, stronger film formation, and more robust binding capabilities, making it ideal for applications requiring significant adhesive strength or sustained release properties.

The solubility profile of PVP K90 is another key attribute. It is readily soluble in water and a variety of organic solvents, including alcohols, amines, and halogenated hydrocarbons, while being insoluble in non-polar solvents like acetone and ether. This broad solubility spectrum allows for its incorporation into diverse formulations, whether aqueous or solvent-based.

PVP K90 is also noted for its chemical stability. It is resistant to acids, salts, and heat, and generally stable under normal storage conditions. While it is hygroscopic, meaning it absorbs moisture from the air, this property can be managed through appropriate storage and handling, and in some applications, it can contribute to moisturizing effects. NINGBO INNO PHARMCHEM CO.,LTD. ensures that its PVP K90 products meet high standards of purity and consistency, crucial for predictable performance.

The various grades of PVP, characterized by their K-values (e.g., K-15, K-30, K-60, K-90), offer formulators a spectrum of properties. While K-30 is often preferred for dispersion and solubilization, K-90 excels in applications demanding strong binding, higher viscosity, and enhanced film integrity. This makes PVP K90 a preferred choice for applications like hair gels, strong tablet binders, and controlled-release systems.

By understanding the chemical intricacies of PVP K90, formulators can effectively leverage its unique properties. NINGBO INNO PHARMCHEM CO.,LTD. provides high-quality PVP K90 that meets the demanding requirements of pharmaceutical, cosmetic, and industrial applications, backed by comprehensive technical support.