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5. Maintain Constant Stirring

The solubility of HPMC in methanol is significant for formulation scientists and chemical engineers. In pharmaceutical applications, the controlled solubility of HPMC can be leveraged to design drug delivery systems. For instance, HPMC can be used in matrix tablets where the polymer's solubility affects the release profile of the active pharmaceutical ingredient (API). By understanding how HPMC interacts with methanol, formulators can manipulate the solvent conditions to achieve desired release kinetics.

HPMC is available in several grades, differentiated primarily by their viscosity, degree of substitution, and molecular weight. The choice of grade depends on the intended application

In cosmetics and personal care products, HPMC acts as a versatile ingredient due to its emulsifying and thickening properties. It is found in creams, lotions, shampoos, and other formulations, providing a desirable viscosity and stability. Additionally, HPMC is appreciated for its non-toxic and mild nature, making it suitable for sensitive skin applications.

- Non-toxic and Biodegradable HPMC is non-toxic and considered safe for use in food and cosmetic products. Its biodegradable nature aligns with growing consumer demands for sustainable and environmentally friendly ingredients.

Structural formula

In the construction industry, HEC is commonly used in cement and mortar formulations to improve workability and increase the strength of the final product. It helps to prevent segregation of ingredients, reduce shrinkage, and improve adhesion to various substrates. HEC is also used in dry mix formulations for tile adhesives, grouts, and joint compounds.

And the Physical State of Polymer Systems of the Gelatin and HPMC According to Water Content is shown as below: