Cov qauv rau Sodium Carboxymethylcellulose / Polyanionic cellulose

Sodium carboxymethylcellulose (CMC) thiab polyanionic cellulose (PAC) yog cellulose derivatives dav siv nyob rau hauv ntau yam lag luam, xws li zaub mov, tshuaj, tshuaj pleev ib ce, thiab roj drilling. Cov ntaub ntawv no feem ntau ua raws li cov qauv tshwj xeeb los ua kom zoo, kev nyab xeeb, thiab sib xws hauv lawv daim ntawv thov. Nov yog qee cov qauv siv feem ntau rau sodium carboxymethylcellulose thiab polyanionic cellulose:

Sodium Carboxymethylcellulose (CMC):

1. Kev lag luam zaub mov:
   • E466: Qhov no yog tus lej thoob ntiaj teb rau cov khoom noj ntxiv, thiab CMC tau muab tus lej E E466 los ntawm Codex Alimentarius Commission.
   • ISO 7885: Cov txheej txheem ISO no muab cov lus qhia tshwj xeeb rau CMC siv hauv cov khoom noj khoom haus, suav nrog cov qauv purity thiab lub cev.
2. Pharmaceutical Industry:
   • USP/NF: Tebchaws Asmeskas Pharmacopeia/National Formulary (USP/NF) suav nrog cov ntawv sau rau CMC, qhia txog nws cov yam ntxwv zoo, cov kev xav tau purity, thiab kev sim rau kev siv tshuaj.
   • EP: European Pharmacopoeia (EP) kuj suav nrog monographs rau CMC, nthuav dav nws cov qauv zoo thiab cov lus qhia tshwj xeeb rau kev siv tshuaj.

Polyanionic Cellulose (PAC):

1. Roj Drilling Kev Lag Luam:
   • API Spec 13A: Qhov kev qhia tshwj xeeb no tau muab los ntawm American Petroleum Institute (API) muab cov cai rau polyanionic cellulose siv los ua cov kua dej ntxiv. Nws suav nrog cov kev qhia tshwj xeeb rau purity, particle loj tis, rheological zog, thiab filtration tswj.
   • OCMA DF-CP-7: Cov qauv no, luam tawm los ntawm Lub Tuam Txhab Cov Khoom Siv Roj Hmab (OCMA), muab cov lus qhia rau kev soj ntsuam ntawm polyanionic cellulose siv hauv cov ntawv thov roj.

Xaus:

Cov qauv ua lub luag haujlwm tseem ceeb hauv kev ua kom zoo, kev nyab xeeb, thiab kev ua haujlwm ntawm sodium carboxymethylcellulose (CMC) thiab polyanionic cellulose (PAC) hauv ntau qhov kev lag luam. Kev ua raws li cov qauv tsim nyog pab cov tuam txhab tsim khoom thiab cov neeg siv tswj kev sib luag thiab kev ntseeg siab hauv lawv cov khoom thiab kev siv. Nws yog ib qho tseem ceeb uas yuav tsum tau xa mus rau cov qauv tshwj xeeb uas siv tau rau kev npaj siv CMC thiab PAC kom ntseeg tau tias muaj kev tswj xyuas zoo thiab kev tswj hwm kev tswj hwm.