Hydroxyethyl cellulose (HEC) yog tsis-ionic, dej-soluble polymer muab tau los ntawm cellulose los ntawm kev hloov kho tshuaj lom neeg. Nws yog feem ntau siv nyob rau hauv ntau yam kev lag luam xws li tshuaj pleev ib ce, chaw tshuaj, tsim khoom, tsim khoom noj, thiab khoom siv ua kom ruaj khov, thiab khaws dej khov kho. Txawm li cas los xij, zoo li cov tshuaj lom neeg, nws txoj kev nyab xeeb yog nyob ntawm nws daim ntawv thov thiab kev xav tau.
Taw qhia rau hydroxyethyl cellulose (HEC)
HEC yog rau lub cellulose tsev neeg ether tsev neeg, uas encompasses ntau ntawm cov cellulose derivatives tsim los ntawm kev hloov kho tshuaj lom neeg. Ntxiv ntawm hydroxyethyl pawg mus rau cellulose molecules txhim kho lawv cov solubility hauv dej, ua rau nws muaj txiaj ntsig zoo hauv kev lag luam uas cov dej ua ke yog ib tug.
1.Qhov chaw ntawm HEC:
Dej solubility: HEC Cov khoom ua pov thawj siab hauv dej, sib sau cov ntsiab lus meej thiab muaj kuab.
Viscosity makulation: nws tuaj yeem hloov kho lub viscosity ntawm cov kev daws teeb meem, ua rau nws yog tus neeg sawv cev ua kom zoo.
STABILITY: HEC muab kev sib cais ntawm cov qauv tsim qauv, tiv thaiv theem sib cais thiab txhim kho lub neej txee.
Zaj duab xis tsim: Nws muaj zaj duab xis-ua yeeb yaj kiab, ua rau nws muaj txiaj ntsig hauv cov txheej txheem thiab cov nplaum.
2.Txoj kev siv:
Cov tshuaj pleev ib ce thiab kev saib xyuas tus kheej: HEC tau dav siv hauv cov tshuaj zawv plaub hau, tshuaj pleev, cream, thiab gels tus neeg ua haujlwm tuab thiab ruaj khov.
Kws Tshuaj: Nws pom cov ntawv thov hauv lub sijhawm, cov ntsiab lus, thiab ophthalmic daws vim nws muaj peev xwm txhim kho viscosity thiab txhim kho kev ntxhib los mos.
Kev tsim kho: Hec yog siv hauv cov khoom tso cai ua kom cov txiv ntoo kom txhim kho kev ua haujlwm, khaws dej, thiab cov nplaum.
Kev lag luam khoom noj khoom haus: hauv kev lag luam khoom noj khoom haus, nws pabcuam ua cov ntaub tuab, tawv, thiab emulsifier hauv cov khoom xws li cov kua qaub, hnav khaub ncaws, thiab cov khoom qab zib.
Kev txiav txim kev nyab xeeb
3.Toxicity Profile:
Tsawg toxicity: HEC feem ntau suav tias muaj kev nyab xeeb rau siv hauv ntau cov ntawv thov.
Tsis-irritant: nws tsis yog-ua kom tawv nqaij thiab qhov muag ntawm cov kev xav tau.
Tsis-rhiab: HEC tsis feem ntau ua rau kev ua xua.
4.pog cov kev pheej hmoo:
Kev nqus tau kev phom sij: Qhov zoo ntawm Hec tuaj yeem ua rau muaj kev phom sij ua pa yog tias nqus tau ntau qhov ntau thaum tuav lossis ua haujlwm.
Kev siv ntau: kev siv ntau dhau los yog kev noj haus ntawm cov kev siv hec confected yuav muaj peev xwm ua rau mob plab zom mov.
Cov khoom tsis huv: impurities nyob rau hauv hec npaj tuaj yeem ua rau muaj kev pheej hmoo nyob ntawm lawv qhov xwm txheej thiab confentration.
5.FDA Cov Kev Cai:
Hauv Tebchaws Asmeskas, Chaw Tswj Xyuas Khoom Noj thiab Tshuaj Noj (FDA) tswj kev siv HEC hauv cov zaub mov, chaw muag tshuaj, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce, thiab tshuaj pleev ib ce. Nws pom zoo cov qib tshwj xeeb rau cov ntawv thov sib txawv raws li kev ntsuam xyuas kev nyab xeeb.
6.eurgean Union:
Hauv European Union, HEC raug tswj hwm nyob rau hauv qhov chaw ncav cuag (kev ntsuam xyuas, thiab txwv nws txoj kev nyab xeeb siv thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo ib puag ncig thiab kev pheej hmoo.
Hydroxyethyl cellulose (HEC) yog ib qho ntau yam polymer nrog cov ntawv thov thoob plaws ntau yam lag luam. Thaum siv raws li cov qauv kev tswj hwm thiab cov qauv kev lag luam, nws ua kom muaj kev pheej hmoo tsawg rau tib neeg kev noj qab haus huv thiab ib puag ncig. Txawm li cas los xij, zoo li cov tshuaj lom neeg, cia, chaw khaws khoom, thiab pov tseg kev coj ua yog qhov tseem ceeb kom txo cov kev phom sij. Zuag qhia tag nrho, HEC tseem ua si lub luag haujlwm tseem ceeb hauv kev txhim kho qhov zoo thiab kev ua tau zoo ntawm cov khoom muaj kev nyab xeeb thaum tswj cov txiaj ntsig kev nyab xeeb.
Lub Sijhawm Post: Feb-18-2025