What is the difference between pure hydroxypropyl methylcellulose and adulterated cellulose
July 28, 2020
1. The pure HPMC aqueous solution of hydroxypropyl methylcellulose is clear, has high light transmittance, and the water retention rate is >95%; the adulterated HPMC aqueous solution is turbid, and the water retention rate is difficult to reach 80%.
2. Pure hydroxypropyl methylcelluloseHPMC powder is fibrous under a microscope or magnifying glass; adulterated HPMC can be observed in granular solids or crystals under a microscope or magnifying glass.