3.Hydroxypropylmethyl cellulose(HPMC)
Hydroxypropylmethyl cellulose is a white powder, or granular with tasteless, odorless and non-toxic .
Specification
| Item |
HPMC |
| |
HK |
HF |
HG |
HJ |
| methoxy |
content% |
19.0-24.0 |
27.0-30.0 |
28.0-30.0 |
16.5-20.0 |
| degree of substitution |
1.1-1.6 |
1.7-1.9 |
1.8-2.0 |
1.1-1.6 |
| hydroxypropoxy |
content% |
4.0-12.0 |
4.0-7.5 |
7.5-12.0 |
23.0-32.0 |
| degree of substitution |
0.1-0.3 |
0.1-0.2 |
0.2-0.3 |
0.7-1.0 |
| water content（wt%) |
≤ 5.0 |
| Ash（wt%) |
≤ 1.0 |
| pH |
5.0-7.5 |
| Appearance |
white or ivory-white powder |
| Size |
80 mesheres、100 mesheres、120 mesheres |
| Viscosity mPa.S |
Viscosity Specification as Bellow |
|
