pharma grade hpmc
white to light yellow podwer or grains.hpmc is nearly insoluble in anhydrous ethanol,ethyl ether and acetone.it is swelled in cold water to form a transparent or a slight cloudy solution.hpmc can be dissolved into some organic solvents and aslo in water-organic solvent mixed.
tablet coating hpmc
white to light yellow podwer or grains.hpmc is nearly insoluble in anhydrous ethanol,ethyl ether and acetone.it is swelled in cold water to form a transparent or a slight cloudy solution.hpmc can be dissolved into some organic solvents and aslo in water-organic solvent mixed.
the specification of pharma grade hpmc
items | specifications | ||||
hpmc | |||||
f | e | j | k | ||
methoxy content(%) | 27.0-30.0 | 28.0-30.0 | 16.5-20.0 | 19.4-24.0 | |
hydroxypropyloxy content(%) | 4.0-7.5 | 7.5-12.0 | 23.0-32.0 | 4.0-12.0 | |
loss on drying,% | 5.0 max | ||||
residue on ignition,% | 1.5 max | ||||
heavy metals,ppm | 20 max | ||||
arsenic,ppm | 3 max | ||||
ph | 5.0-8.0 | ||||
bacterium | 1000cfu/gram max | ||||
mold | 100cfu/gram max | ||||
viscosity(2% solution),mpa.s | 5-200000 |
viscosity specification of pharma grade hpmc
level | grade | viscosity(2% solution),mpa.s | |||
2910 | e3 | 3 | |||
e5 | 5 | ||||
e15 | 15 | ||||
e30 | 30 | ||||
e50 | 50 | ||||
e100 | 100 | ||||
2208 | k4m | 4000 | |||
k10m | 10000 | ||||
k15m | 15000 | ||||
k100m | 100000 |
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