HPMC solubility in hot water

HPMC solubility in hot water

Because HPMC is not soluble in hot water, we need to cool the HPMC hot solution to a proper temperature. Only in this way, HPMC can be soluble and play the function of increasing viscosity. There are 3 ways in the following.

1. Pour the required amount of hot water into the container. Heat it until about 70℃. Then stir it slowly. and add HPMC to it. In the beginning, HPMC powder floated on the water solution surface. Gradually forming a slurry through stirring. Stir until the slurry is cool. If the temperature is down to a proper degree, the HPMC becomes water solubility. The HPMC solution begins to have viscosity.

2. Pour 1/3 or 2/3 of the required amount of hot water into the container. Heat it until about 70℃. Then add HPMC. Then stir it slowly to make HPMC powder evenly disperse and thoroughly wet. hot water slurry is prepared. Then add the remaining amount of cold water to the hot slurry and cool the mixture while stirring. Then continue to stir.

3. Put 1/3 or 2/3 of the required amount of hot water into the container. Heat it to about. 70°C. Then stir it slowly to make HPMC powder evenly disperse and thoroughly wet. hydroxypropyl methylcellulose is dispersed. Hot water slurry is prepared. Then add the remaining amount of cold water or ice water to the container. Add HPMC hot water slurry to the cold water, and stir, At last cool down this solution.