Hydroxypropyl Methylcellulose HPMC E3, E5, E6, E15, E50, E4M

Hydroxypropyl Methylcellulose (HPMC) is a cellulose ether that has various grades, denoted by letters and numbers. These grades represent different specifications, including variations in molecular weight, hydroxypropyl content, and viscosity. Here’s a breakdown of the HPMC grades you mentioned:

1. HPMC E3:
   • This grade likely refers to HPMC with a specific viscosity 2.4-3.6CPS. The number 3 indicates the viscosity of a 2% aqueous solution, and higher numbers generally indicate higher viscosity.
2. HPMC E5:
   • Similar to E3, HPMC E5 represents a different viscosity grade. The number 5 indicates the approximate viscosity 4.0-6.0 CPS of a 2% aqueous solution.
3. HPMC E6:
   • HPMC E6 is another grade with a different viscosity profile. The number 6 signifies the viscosity 4.8-7.2 CPS of a 2% solution.
4. HPMC E15:
   • HPMC E15 likely represents a higher viscosity grade compared to E3, E5, or E6. The number 15 indicates the viscosity 12.0-18.0CPS of a 2% aqueous solution, suggesting a thicker consistency.
5. HPMC E50:
   • HPMC E50 indicates a higher viscosity grade, with the number 50 representing the viscosity 40.0-60.0 CPS of a 2% solution. This grade is likely to have a significantly higher viscosity compared to E3, E5, E6, or E15.
6. HPMC E4m:
   • The “m” in E4m typically denotes medium viscosity 3200-4800CPS. HPMC E4m represents a grade with a moderate viscosity level. It may be suitable for applications requiring a balance between fluidity and thickness.

When selecting an HPMC grade for a specific application, considerations include the desired viscosity, solubility, and other performance characteristics. HPMC is commonly used in industries such as construction, pharmaceuticals, cosmetics, and food.

In food, HPMC is often utilized as an additive in non dairy-based products to improve properties like water retention, workability, and adhesion. In pharmaceuticals and cosmetics, HPMC is used for its film-forming and thickening properties.

It’s crucial to consult with the manufacturer or supplier to obtain detailed technical information, including the specifications and recommended applications for each HPMC grade. Manufacturers typically provide technical data sheets and product documentation to guide users in selecting the most suitable grade for their specific needs.