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What are the characteristics of pure hydroxypropyl methyl cellulose HPMC

December 10, 2021by admin0

1. The pure hydroxypropyl methylcellulose HPMC has a fluffy visual state and a small bulk density in the range of 0.3–0.4/ml; the adulterated hydroxypropyl methylcellulose HPMC has better fluidity and feel more Shen, there is a clear difference from the authentic appearance.

2. The pure hydroxypropyl methylcellulose HPMC aqueous solution is clear, has high light transmittance, and the water retention rate is >97%; the adulterated hydroxypropyl methylcellulose HPMC aqueous solution is turbid, and the water retention rate is difficult to reach 80%.

3. Pure hydroxypropyl methylcellulose HPMC should not smell ammonia, starch and alcohol; adulterated hydroxypropyl methylcellulose HPMC can often smell all kinds of flavors, even if it is tasteless, Feel heavy.

4. Pure hydroxypropyl methylcellulose HPMC powder is fibrous under a microscope or a magnifying glass; adulterated hydroxypropyl methylcellulose HPMC can be observed as a granular solid or crystal under a microscope or a magnifying glass.

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