Focus on Cellulose ethers

Hydroxypropyl Methylcellulose amakuru ya tekiniki

Hydroxypropyl Methylcellulose amakuru ya tekiniki

Dore imbonerahamwe yerekana amakuru asanzwe ya tekiniki ya hydroxypropyl methylcellulose (HPMC):

Umutungo Agaciro
Imiterere yimiti Inkomoko ya selile
Inzira ya molekulari (C6H7O2 (OH) xm (OCH3) yn (OCH2CH3) z) n
Ingano yuburemere 10,000 - 1.500.000 g / mol
Kugaragara Ifu yera-yera
Gukemura Gushonga mumazi, kudashonga mumashanyarazi
Urwego rwinshi 5 - 100.000 mPa · s (ukurikije igipimo cya viscosity hamwe na concentration)
Ubushyuhe bwa gelation 50 - 90 ° C (ukurikije igipimo cya viscosity hamwe na concentration)
urwego pH 4.0 - 8.0 (igisubizo 1%)
Ibirungo ≤ 5.0%
Ibirimo ivu ≤ 1.5%
Ibyuma biremereye ≤ 20 ppm
Imipaka ya mikorobe ≤ 1.000 cfu / g kubara mikorobe zose zo mu kirere; ≤ 100 cfu / g kumisemburo yose hamwe
Amashanyarazi asigaye Yubahiriza USP 467
Ingano nini yo gukwirakwiza 90% by'ibice biri muri 80 - 250 µm
Ubuzima bwa Shelf Imyaka 2-3 iyo ibitswe ahantu hakonje, humye

Ni ngombwa kumenya ko aya makuru ya tekiniki ashobora gutandukana bitewe nicyiciro cyihariye nuwakoze HPMC. Buri gihe birasabwa kugisha inama ibicuruzwa byatanzwe nuwabikoze kubicuruzwa byihariye ukoresha.


Igihe cyo kohereza: Werurwe-04-2023
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