Hydroxypropyl Cellulose (CAS 9004-64-2) is a polymer whose performance is intrinsically linked to its viscosity. For formulators and procurement specialists aiming to buy HPC, understanding these viscosity specifications is crucial for selecting the correct grade for their intended application. NINGBO INNO PHARMCHEM CO.,LTD., a prominent manufacturer and supplier of this essential chemical, guides you through this important aspect.

What are Viscosity Specifications for HPC?

The viscosity of Hydroxypropyl Cellulose is typically measured in centipoise (cP) or millipascal-seconds (mPa·s) for a standardized solution, usually 2% in water at 20°C. Different grades of HPC are produced with varying degrees of substitution and molecular weights, leading to a range of viscosities. These specifications directly influence the final product's rheological properties.

Importance of Correct Viscosity Selection:

  • Pharmaceutical Formulations: In tablets, HPC acts as a binder. A lower viscosity grade might be sufficient for direct compression, while a higher viscosity grade can offer better binding strength. For extended-release matrices, precise viscosity control is essential to achieve the desired drug release profile. A manufacturer’s ability to provide consistent viscosity is vital here.
  • Cosmetics and Personal Care: In lotions, creams, and gels, viscosity dictates the product's feel and application. Lower viscosity grades provide lighter textures, while higher viscosity grades result in richer, more viscous products. Choosing the right viscosity ensures the desired sensory experience and stability.
  • Industrial Applications: In paints and coatings, viscosity affects flow and leveling properties. In ceramics, it influences the suspension of particles and the workability of the material. Correct viscosity ensures efficient processing and desired product performance.

Key Viscosity Grades Available:

Suppliers like NINGBO INNO PHARMCHEM CO.,LTD. typically offer a range of HPC grades, catering to diverse needs. Common ranges include:

  • Low viscosity grades (e.g., 3-6 mPa·s)
  • Medium viscosity grades (e.g., 150-400 mPa·s)
  • High viscosity grades (e.g., 1,000-4,000 mPa·s or even higher)

When you buy Hydroxypropyl Cellulose, consult product data sheets and discuss your application requirements with the supplier to select the most appropriate viscosity. Ensuring a consistent viscosity from your manufacturer is key to reproducible results.

Partnering for Success:

NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing detailed technical information and support to help you select the optimal HPC grade for your specific needs. We offer competitive prices for bulk purchase and guarantee product consistency. Contact us today to discuss your viscosity requirements and get a quote for your next order of Hydroxypropyl Cellulose.