0102 ib03
Malic acid feem ntau yog siv hauv cov khoom noj thiab tshuaj lag luam
Kev piav qhia
Malic acid feem ntau yog siv rau hauv kev npaj cov tshuaj, mordants thiab tanning agents, thiab kuj yog feem ntau siv los ua ib tug reagent rau kev daws teeb meem ntawm racemic yooj yim compounds. Nws kuj yog ib tug qaub neeg sawv cev nyob rau hauv cov khoom noj additives, qaub yog zoo dua malic acid, lactic acid thiab hais txog. Ob peb ntawm nws cov ntsev muaj cov kev siv tseem ceeb. Piv txwv li, Fehling reagent yog formulated nrog poov tshuaj sodium tartrate nyob rau hauv lub laboratory los txheeb xyuas aldehyde functional pawg nyob rau hauv cov qauv ntawm cov organic molecules. Nws cov poov tshuaj thiab sodium ntsev kuj hu ua Rochelle's ntsev. Nws cov crystals yog polarized nyob rau hauv lub siab los tsim ib tug muaj peev xwm sib txawv (piezoelectric nyhuv) nyob rau hauv ob qhov kawg ntawm qhov chaw, uas yuav ua tau rau hauv piezoelectric ntsiab rau xov tooj cua thiab cable broadcasting. Lub receiver thiab nqa. Kev kho mob, potassium antimony tartrate (feem ntau hu ua tartrate) yog siv los kho tus mob schistosomiasis.
piav 2
Daim ntawv thov
1. Hauv kev lag luam khoom noj khoom haus: nws tuaj yeem siv rau hauv kev ua thiab kev sib xyaw ntawm cov dej haus, liqueur, kua txiv hmab txiv ntoo thiab kev tsim cov khoom qab zib thiab jam thiab lwm yam. Nws kuj muaj qhov cuam tshuam ntawm cov kab mob inhibition thiab antisepsis thiab tuaj yeem tshem tawm tartrate thaum lub sij hawm brewing.
2. Hauv kev lag luam luam yeeb: malic acid derivative (xws li esters) tuaj yeem txhim kho qhov tsw ntawm luam yeeb.
3. Hauv kev lag luam tshuaj: cov troches thiab syrup compounded nrog malic acid muaj cov txiv hmab txiv ntoo saj thiab tuaj yeem pab txhawb lawv txoj kev nqus thiab diffusion hauv lub cev.
4. Kev lag luam tshuaj txhua hnub: raws li tus neeg sawv cev zoo, nws tuaj yeem siv rau cov tshuaj txhuam hniav, cov qauv tshuaj tsw qab thiab lwm yam. Nws kuj tseem tuaj yeem siv los ua cov khoom siv deodorant thiab detergent. Raws li cov khoom noj ntxiv, malic acid yog cov khoom noj khoom haus tseem ceeb hauv peb cov khoom noj. Raws li ib tug ua zaub mov additives thiab cov khoom xyaw zaub mov nyob rau hauv Suav teb, peb yuav muab koj nrog zoo malic.
Khoom specification
| Yam khoom | Index |
| Kev xav | Tsis muaj xim los yog dawb nplej |
| Mesh Number | ≥30 mesh |
| Malic acid cov ntsiab lus, w /% | 90 ± 1.5 |
| Noj tau hydrogenated roj cov ntsiab lus, w /% | 10 ± 1.5 |
| Lead (Pb), mg/kg | ≤ 2.0 |
| Tag nrho cov arsenic, mg / kg | ≤ 2.0 |
| Colonies Number, CFU/g | ≤2000 |
| Pwm thiab poov xab, CFU / g | ≤200 |
| E. coli, CFU/g | ≤100 |
| Hlawv residue, W /% | ≤0.1 |