What are the dissolution methods of HPMC hydroxypropyl methylcellulose?

1) All models can be added to the material by dry mixing;

2) When it needs to be directly added to the aqueous solution at room temperature, it is better to use the cold water dispersion type, and the thickening is generally 10 to 90 minutes after adding (stirring and stirring) 3) For ordinary models, first stir and disperse with hot water, then add cold water to stir and cool to dissolve;

4) If agglomeration and wrapping occurs during dissolution, it is due to insufficient stirring or the normal type is directly added to cold water. At this time, stir quickly.

5) If bubbles are generated during dissolution, they can be left to stand for 2-12 hours (the specific time is determined by the consistency of the solution) or removed by vacuum, pressure, etc., or an appropriate amount of defoamer can be added.