1. Name: Hydroxypropyl Methyl Cellulose(HPMC,MHPC)
2. Other Name: Cellulose hydroxy propyl methyl ether; Cellulose
hydroxypropyl methyl ether Hyprolose.
3. CAS Registry Number:9004-65-3
4. Composition and chemical structure:
5.Technical specification:
6. Physical Properties:
1) Appearance: Appearance: white or off-white powder , odorless and
flavorless.
2) Particle sizes: 100% pass rate in 80 mesh.
3) Carbonization temperature: 280-300℃. Color change temperature:
190-200℃
4) Apparent density: 0.43-0.50 g/mL (usually about 0.5
g/mL),specific density 1.26-1.31mL.
5) Surface tension: 42-56 dyn/cm (2% aqueous solution with 25 ℃).
6) Solubility: soluble in cold water, glacial acetic acid, ethanol,
methanol and propylene glycol, slightly soluble in acetone
depending on the degree of substitutions, The solution of HPMC has
surface activity, high transparency, and stable performance. When
heated at certain temperature, the solution becomes cloudy or forms
flocculent gel. However, the solution becomes clear again after
cooling. Different types of HPMC have different gelation
temperatures. The solubility varies with the viscosity. The lower
the viscosity, the higher solubility it has. The properties have
differences with different types of HPMC and the solubility in
water of HEMC is not affected by PH.
7) The higher methoxy content in HPMC, the lower gelation
temperature, and the higher solubility in water and surface
activity.
8) HPMC has some other characteristics, for example, thickening
property, PH stability, retention of water, excellent film-forming
property, good disperse and adhesion ability.
7. Packing, storage and transport:25kg package in PE Bags.