Hydroxypropyl Methylcellulose technical data
Nov yog ib lub rooj qhia txog qee cov ntaub ntawv qhia txog hydroxypropyl methylcellulose (HPMC):
| Khoom | Tus nqi |
|---|---|
| Cov qauv tshuaj | Cellulose derivative |
| Cov mis mos molecular | (C6H7O2(OH)xm(OCH3)yn(OCH2CH3)z)n |
| Molecular hnyav ntau yam | 10,000 - 1,500,000 g / mol |
| Qhov tshwm sim | Dawb mus rau dawb hmoov |
| Solubility | Soluble nyob rau hauv dej, insoluble nyob rau hauv organic solvents |
| viscosity ntau | 5 - 100,000 mPa·s (nyob ntawm qib viscosity thiab concentration) |
| Gelation kub ntau yam | 50 - 90 ° C (nyob ntawm qib viscosity thiab concentration) |
| pH ntau | 4.0 - 8.0 (1% daws) |
| Cov dej noo | ≤ 5.0% |
| Cov ntsiab lus tshauv | ≤ 1.5% |
| Cov hlau hnyav | ≤ 20 ppm |
| Microbial txwv | ≤ 1,000 cfu / g rau tag nrho aerobic microbial suav; ≤ 100 cfu / g rau tag nrho cov poov xab ua ke thiab pwm |
| Cov kuab tshuaj residual | Ua raws li USP 467 |
| Particle loj faib | 90% ntawm cov khoom yog nyob rau hauv 80 - 250 µm |
| Txee lub neej | 2-3 xyoos thaum khaws cia rau hauv qhov chaw txias, qhuav |
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias cov ntaub ntawv thev naus laus zis no yuav txawv nyob ntawm qib tshwj xeeb thiab cov chaw tsim khoom ntawm HPMC. Nws yog ib txwm pom zoo kom sab laj cov khoom specifications muab los ntawm cov chaw tsim khoom rau cov khoom tshwj xeeb uas koj siv.
Post lub sij hawm: Mar-04-2023