Hydroxypropylmethyl Cellulose (HPMC)

Hydroxypropylmethyl Cellulose (HPMC)
CAS No.:9004-65-3
M.F:C56H108O30
Hydroxy Propyl Methyl Cellulose
Hydroxypropylmethyl Cellulose (HPMC)
CAS No.:9004-65-3
M.F:C56H108O30

Hydroxy Propyl Methyl Cellulose
1. Physical Property:
Appearance: white or white powder
Granular Size: over 98.5% through 100mesh,100% through 80mesh
Specific Weight: 1.26-1.31
Apparent Density: 0.25-0.70g/cm3(usually around 0.5g/cm3)
Surface Tension (2% water solution): 42-56dyn/cm
Carbonization Temperature: 280-300°C
Softening Point: 240°C
Melting Point: 260°C


2. Application Performance :
(1)Water Solubility Soluble water in any proportion,the highest density depends on viscosity,and solution does not be effected by PH value.
(2) Solubility in Organic solvent HPMC can dissolve in some organic solvents or organic aqueous solutions such as ethylidene chloride,alcohol ones.
(3) Heat Gelling When their aqueous solutions are heated to a certain temperature, reversible reaction may occur,but its fast gelling can be controlled.
(4)Non-ion Electric Charge HPMC is non-ion cellulose ether,does not complex with metal ions or result in insoluble precipitations.
(5) Thickening Its water solution provides thickening effect whoich has to do with viscosity,density and system.
(6) Water-holding HPMC or its solution can absorb and hold moisture.
(7) Film-forming HPMC can be made into smooth,tough and elastic film which offers excellent oil resistance and antioxidancy.
(8) Anti-enzyme HPMC and its solution have good resistance to enzyme,and offer good viscosity stability.
(9) PH Stability HPMC is stable in acid and alkali,no effect within PH3-11.
(10) Surface Tension HPMC in solution provides surface activity,playing a role of emulsification and protection of gels.
(11) Inertness of Metabolism Used as additive of food and medicine,it is non-nutritious, heatless, does not change metabolism.
(12) Dispersiveness HPMC can reduce interface tension,making dispersive phases disperse to size-suitable granules.
(13)Coherence Can be used as pigment,adhesive agent for paper,also used in coating and cohesive auxiliary material.
(14) Lubricity Can be used for rubber,asbestos,cement and ceramics to reduce friction and improve the pumping-adaptability of cement slurrry.
(15) Suspension-Assistance Can prevent solid granules from setting down.
(16) Emulsification Owing to reducing surface tension,it can stabilize emulsion.
(17) Protection of Gels A protective layer forms on the surface of the dispersed drops. which prevents drops from agglomerating,thus stabilizing gels.