Hydroxypropyl Methyl cellulose is a solid substance at room temperature and is typically beige in color. One of the most important properties of Hydroxypropyl methyl cellulose is that, in a water-based solution, it does not have a gain property when heated.HPMC hardly dissolves in waterless ethanol, ether or acetone. It can dissolve in some organic solvents or some water-organic components.
HPMC is Slender yellow or White fibril powder, and tasteless. It’s hydroscopic, and when it dissolves in water. It can produce sticky solution; insoluble ethanol, diethyl, ether and chloroform.
Appearance: HPMC is a white or light gray pellet or fibril power with odorless and tasteless.
Solubility: hardly dissolves in waterless ethanol, ether or acetone. It can dissolve in some organic solvents or some water-organic components.
Pellet: 100 screen passable rates are over 98.5%, 80 screen passable rates are 100%.
HPMC will collection when directly added to water and then dissolve. In this way it dissolves very slow and hard, Suggested methods as followers:
In hot water: Add water in container to 1/3 or 2/3 of its content. Heated to over 80oC.Because it is doesn’t dissolve in hot water, HPMC uniformly disperses in hot water, Add cool water or ice to the element content, stir and cool down the mixture.
Powder combination: Mix HPMC with identical volume of other powder disperses them sufficiently then adds water to the mixture result HPMC dissolves without collection.
Organic solvent wet. Diffuse or wet with organic solvents such as ethanol, glycol or oil, then add water can cause HPMC completely dissolves.
Hydroxypropyl Methyl cellulose
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